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<article article-type="review-article" dtd-version="1.0" xml:lang="hr" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML">
<front>
<journal-meta>
<journal-id journal-id-type="publisher-id">LV</journal-id>
<journal-id journal-id-type="nlm-ta">Lijec Vjesn</journal-id>
<journal-title-group>
<journal-title>Lijecnicki Vjesnik</journal-title>
<abbrev-journal-title abbrev-type="pubmed">Lijec. Vjesn.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="ppub">0024-3477</issn>
<issn pub-type="epub">1849-2177</issn>
<publisher><publisher-name>Croatian Medical Association</publisher-name></publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="publisher-id">LV-146-148</article-id>
<article-id pub-id-type="doi">10.26800/LV-146-3-4-8</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Review</subject></subj-group>
</article-categories>
<title-group>
<article-title>Bubre&#x017E;na presadba u vaskularno zahtjevnih bolesnika</article-title>
<trans-title-group xml:lang="en">
<trans-title>Kidney transplantation in complex vascular patients</trans-title>
</trans-title-group>
</title-group>
<contrib-group>
<contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5696-0850</contrib-id><name><surname>Marki&#x0107;</surname><given-names>Dean</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref><xref ref-type="aff" rid="aff2"><sup>2</sup></xref></contrib>
<aff id="aff1"><label>1</label><institution>Klinika za urologiju, Klini&#x010D;ki bolni&#x010D;ki centar Rijeka</institution>, <addr-line>Rijeka</addr-line></aff>
<aff id="aff2"><label>2</label><institution>Medicinski fakultet Sveu&#x010D;ili&#x0161;ta u Rijeci</institution>, <addr-line>Rijeka</addr-line></aff>
</contrib-group>
<author-notes>
<corresp id="cor1">Adresa za dopisivanje: Izv. prof. dr. sc. Dean Marki&#x0107;, dr. med., <ext-link ext-link-type="uri" xlink:href="https://orcid.org/0000-0001-5696-0850">https://orcid.org/0000-0001-5696-0850</ext-link>, Klinika za urologiju, Klini&#x010D;ki bolni&#x010D;ki centar Rijeka i Katedra za urologiju Medicinskog fakulteta Sveu&#x010D;ili&#x0161;ta u Rijeci, Tome Stri&#x017E;i&#x0107;a 3, 51000 Rijeka, e-po&#x0161;ta: dean.markic@medri.uniri.h</corresp>
<fn fn-type="con">
<p content-type="fn-title">DOPRINOS AUTORA</p>
<p>K<sc>oncepcija</sc> <sc>ili</sc> <sc>nacrt</sc> <sc>rada</sc>: DM</p>
<p>P<sc>rikupljanje</sc>, <sc>analiza</sc> <sc>i</sc> <sc>interpretacija</sc> <sc>podataka</sc>: DM</p>
<p>P<sc>isanje</sc> <sc>prve</sc> <sc>verzije</sc> <sc>rada</sc>: DM</p>
<p>K<sc>riti&#x010D;ka</sc> <sc>revizija</sc>: DM</p>
</fn>
</author-notes>
<pub-date date-type="pub" publication-format="electronic"><month>06</month><year>2024</year></pub-date>
<pub-date date-type="pub" publication-format="print"><month>06</month><year>2024</year></pub-date>
<volume>146</volume>
<issue>3-4</issue>
<fpage>148</fpage>
<lpage>155</lpage>
<permissions>
<copyright-statement>Croatian Medical Association</copyright-statement>
<copyright-year>2024</copyright-year>
<copyright-holder>Croatian Medical Association</copyright-holder>
<license xlink:href="https://creativecommons.org/licenses/by-nc-nd/4.0/" specific-use="CC BY-NC-ND 4.0"><license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (CC BY-NC-ND) 4.0 License.</license-p></license>
</permissions>
<abstract>
<title>SA&#x017D;ETAK</title>
<p>Bubre&#x017E;na presadba se smatra najboljim postupkom nadomje&#x0161;tanja bubre&#x017E;ne funkcije u bolesnika sa zavr&#x0161;nim stupnjem kroni&#x010D;ne bubre&#x017E;ne bolesti. Pove&#x0107;anje dobi i darovatelja i primatelja dovodi do pove&#x0107;ane slo&#x017E;enosti implantacije bubrega. Dodatno, periferna &#x017E;ilna bolest je diljem svijeta u porastu, &#x0161;to dovodi do ote&#x017E;avanja kirur&#x0161;kog postupka, ali i do lo&#x0161;ijih dugoro&#x010D;nih ishoda transplantacije uklju&#x010D;uju&#x0107;i i smanjeno pre&#x017E;ivljenje presatka i/ili bolesnika. Unato&#x010D; tomu dijaliti&#x010D;ko lije&#x010D;enje ima lo&#x0161;ije ishode te se i u vaskularno slo&#x017E;enijih bolesnika preporu&#x010D;uje u&#x010D;initi bubre&#x017E;nu presadbu. Neki od ote&#x017E;avaju&#x0107;ih vaskularnih &#x010D;imbenika jesu izrazito kalcificirane krvne &#x017E;ile, postojanje aortoilija&#x010D;nih ili endovaskularnih proteza te vi&#x0161;estruke transplantacije (potreba za tre&#x0107;om i/ili &#x010D;etvrtom transplantacijom u prethodno zauzetim ilija&#x010D;nim jamama). Prije same transplantacije u tih bolesnika veoma je va&#x017E;no u&#x010D;initi prikladnu slikovnu obradu koja ponekada mora biti invazivna. Nu&#x017E;no je prije transplantacije odabrati mjesto implantacije, informirati bolesnika o slo&#x017E;enosti zahvata i mogu&#x0107;im komplikacijama pa &#x010D;ak i o mogu&#x0107;em intraoperacijskom odustajanju od transplantacije. Mogu&#x0107;e mjesto implantacije mo&#x017E;e biti sama &#x017E;ilna proteza, proksimalnije krvne &#x017E;ile sve do aorte i donje &#x0161;uplje vene, uklju&#x010D;uju&#x0107;i i njih. U nekih bolesnika dobra alternativa je ortotopna bubre&#x017E;na presadba. Broj komplikacija je ve&#x0107;i nego u standardnoj transplantacijskoj populaciji. Zaklju&#x010D;no, mo&#x017E;emo re&#x0107;i kako je transplantacija u ovih bolesnika izazovan kirur&#x0161;ki postupak s ve&#x0107;im pobolom i ve&#x0107;om smrtnosti te smanjenim pre&#x017E;ivljenjem presatka i bolesnika te zahtijeva iskusan kirur&#x0161;ki tim.</p>
</abstract>
<trans-abstract xml:lang="en">
<title>SUMMARY</title>
<p>Kidney transplantation is the optimal treatment modality for renal replacement therapy in patients with end-stage renal disease. The increased age of both donors and recipients has made kidney implantation more demanding. Additionally, peripheral vascular disease is on the rise worldwide, leading to challenges in kidney transplantation and worse long-term outcomes, including reduced graft and/or patient survival. Despite these challenges, dialytic treatment yields even worse outcomes and kidney transplantation remains the preferred approach even in patients with complex vascular issues. Some of the aggravating factors include calcified arteries, the presence of aortoiliac or endovascular prostheses, and the need for retransplantation (especially third and fourth transplantations). Prior to transplantation, thorough imaging methods, including invasive ones, must be used for all patients. Before the operation it is crucial to select the appropriate implantation site and inform patients about potential difficulties and complications, including the possibility of intraoperative withdrawal of transplantation. Possible implantation sites include vascular prostheses, more proximal blood vessels extending up to the aorta and inferior vena cava. In some cases, orthotopic kidney transplantation serves as a good alternative. However, the number of complications tends to be higher in this patient population compared to the standard population. In summary, kidney transplantation in these patients represents a challenging surgical procedure with increased morbidity and mortality, decreased survival of the graft and patients, necessitating an experienced surgical team.</p>
</trans-abstract>
<kwd-group kwd-group-type="author"><kwd>Deskriptori KRONI&#x010C;NA BUBRE&#x017D;NA BOLEST &#x2013; kirurgija, komplikacije</kwd><kwd>TRANSPLANTACIJA BUBREGA &#x2013; metode, ne&#x017E;eljeni u&#x010D;inci</kwd><kwd>&#x017D;ILNA KALCIFIKACIJA &#x2013; etiologija, kirurgija, slikovna dijagnostika</kwd><kwd>ATEROSKLEROZA &#x2013; kirurgija, komplikacije</kwd><kwd>ILIJA&#x010C;NA ARTERIJA &#x2013; kirurgija, slikovna dijagnostika</kwd><kwd>REOPERACIJA &#x2013; metode</kwd><kwd>PRE&#x017D;IVLJENJE PRESATKA</kwd></kwd-group>
<kwd-group kwd-group-type="translator" xml:lang="en"><title>Descriptors </title><kwd>RENAL INSUFFICIENCY, CHRONIC &#x2013; complications, surgery</kwd><kwd>KIDNEY TRANSPLANTATION &#x2013; adverse effects, metods</kwd><kwd>VASCULAR CALCIFICATION &#x2013; diagnostic imaging, etiology, surgery</kwd><kwd>ATHEROSCLEROSIS &#x2013; complications, surgery</kwd><kwd>ILIAC ARTERY &#x2013; diagnostic imaging, surgery</kwd><kwd>REOPERATION &#x2013; methods</kwd><kwd>GRAFT SURVIVAL</kwd></kwd-group>
</article-meta>
</front>
<body>
<p>Bubre&#x017E;na presadba (transplantacija bubrega, TB) smatra se postupkom izbora u lije&#x010D;enju bolesnika sa zavr&#x0161;nim stupnjem kroni&#x010D;ne bubre&#x017E;ne bolesti (KBB). U odnosu na dijaliti&#x010D;ke postupke bolesnici s TB-om imaju zna&#x010D;ajno dulje pre&#x017E;ivljenje i bolju kvalitetu &#x017E;ivota. Sve starija dob primatelja i ve&#x0107;i broj komorbiditeta bolesnika doveli su do toga da je TB, pogotovo u nekih bolesnika, postala slo&#x017E;enija kako s kirur&#x0161;koga, tako i s op&#x0107;eg medicinskog gledi&#x0161;ta. Primjerena eksplantacija bubrega kao i njegovo pripremanje (engl. <italic>back-table surgery</italic>, tzv. kirur&#x0161;ka priprema na stoli&#x0107;u) neposredno prije TB-a i dalje su iznimno va&#x017E;ni u kirur&#x0161;kom dijelu transplantacijskoga procesa. No, stanje ilija&#x010D;nih krvnih &#x017E;ila primatelja mo&#x017E;e zna&#x010D;ajno utjecati na samu TB, pa &#x010D;ak ju i onemogu&#x0107;iti. Naime, aterosklerozu i perifernu &#x017E;ilnu bolest ima 17 &#x2013; 48% bolesnika sa zavr&#x0161;nim stupnjem KBB-a, a oko &#x010D;etvrtine njih ima zahva&#x0107;eno podru&#x010D;je aorte i ilija&#x010D;nih arterija. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r2"><italic>2</italic></xref>) Osim kalcificiranosti ilija&#x010D;nih krvnih &#x017E;ila, TB mo&#x017E;e ote&#x017E;ati i prisutnost prethodnih presadaka. Iako se u tih bolesnika radi o kirur&#x0161;ki slo&#x017E;enijem zahvatu pre&#x017E;ivljenje je bolje nego ako bolesnik ostane na dijaliti&#x010D;kom lije&#x010D;enju. (<xref ref-type="bibr" rid="r3"><italic>3</italic></xref>) U &#x010D;lanku su prikazane razli&#x010D;ite klini&#x010D;ke situacije, prvenstveno problemi krvnih &#x017E;ila koji mogu ote&#x017E;ati TB, i mogu&#x0107;i na&#x010D;ini na koji se one mogu rije&#x0161;iti.</p>
<sec sec-type="other1">
<title>&#x017D;ilne kalcifikacije i zavr&#x0161;ni stupanj KBB-a</title>
<p>Bolesnici s KBB-om imaju zna&#x010D;ajno ve&#x0107;u u&#x010D;estalost arterijskih kalcifikacija od standardne populacije. One nastaju kao posljedica hiperparatireoidizma, &#x0161;e&#x0107;erne bolesti i hiperlipidemije. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r5"><italic>5</italic></xref>) Osim toga, &#x017E;ilne kalcifikacije br&#x017E;e napreduju u mu&#x0161;karaca te sa starenjem i trajanjem dijaliti&#x010D;kog lije&#x010D;enja. &#x017D;ilne kalcifikacije su prema nekim istra&#x017E;ivanjima izra&#x017E;enije u bolesnika na hemodijalizi u odnosu na bolesnike koji su na peritonejskoj dijalizi. (<xref ref-type="bibr" rid="r6"><italic>6</italic></xref>&#x2013;<xref ref-type="bibr" rid="r12"><italic>12</italic></xref>) Nakon uspje&#x0161;ne TB i oporavka bubre&#x017E;ne funkcije dolazi do remodelacije krvnih &#x017E;ila, ali ne dolazi do regresije &#x017E;ilnih kalcifikacija, ve&#x0107; samo do usporavanja njihovog napredovanja. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r13"><italic>13</italic></xref>&#x2013;<xref ref-type="bibr" rid="r16"><italic>16</italic></xref>)</p>
<p>Prije se procjena kalcificiranosti ilija&#x010D;nih krvnih &#x017E;ila odre&#x0111;ivala radiografskom snimkom zdjelice. U 40% bolesnika s TB-om mo&#x017E;emo prona&#x0107;i umjerenu i jaku prisutnost kalcificiranosti krvnih &#x017E;ila na radiografskoj snimci. Prema nekim autorima prisutnost kalcifikacija u ilija&#x010D;nim arterijama zna&#x010D;ajno smanjuje pre&#x017E;ivljenje i bolesnika i presatka te pove&#x0107;ava izglede za razvoj intraoperacijskih &#x017E;ilnih komplikacija. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>) Najve&#x0107;i je nedostatak radiografske snimke zdjelice mala osjetljivost (42%) i specifi&#x010D;nost (82%). (<xref ref-type="bibr" rid="r17"><italic>17</italic></xref>) Kompjutorizirana tomografija (CT, od engl. <italic>computed tomography</italic>) smatra se naprednijom i to&#x010D;nijom dijagnosti&#x010D;kom metodom za evaluaciju krvnih &#x017E;ila te se u dana&#x0161;nje vrijeme ona smatra zlatnim standardom za njihovu procjenu. (<xref ref-type="bibr" rid="r18"><italic>18</italic></xref>, <xref ref-type="bibr" rid="r19"><italic>19</italic></xref>)</p>
<p>Davis i suradnici su uz pomo&#x0107; CT-a ispitivali kalcificiranost ilija&#x010D;nih arterija u 131 bolesnika s TB-om. (<xref ref-type="bibr" rid="r19"><italic>19</italic></xref>) Stariji bolesnici i dijabeti&#x010D;ari imali su zna&#x010D;ajno ve&#x0107;u kalcificiranost arterija. Multivarijantna analiza je pokazala kako je odre&#x0111;ivanje morfologije kalcifikacija arterijskog segmenta kori&#x0161;tenoga za arterijsku anastomozu bio neovisan prognosti&#x010D;ki &#x010D;imbenik ve&#x0107;eg stupnja kirur&#x0161;ke zahtjevnosti operacije i ve&#x0107;e u&#x010D;estalosti odgo&#x0111;ene funkcije presatka. Ujedno su bolesnici s dokazanim kalcifikacijama imali lo&#x0161;ije jednogodi&#x0161;nje pre&#x017E;ivljenje u odnosu na one bez kalcifikacija. Autori su zaklju&#x010D;ili da je kori&#x0161;tenje CT-a za odre&#x0111;ivanje kalcificiranosti arterija osobito korisno u bolesnika starije dobi i u onih sa &#x0161;e&#x0107;ernom bole&#x0161;&#x0107;u kako bi se odabralo optimalno mjesto za arterijsku anastomozu i na taj na&#x010D;in pobolj&#x0161;ao ishod TB-a. Andres i suradnici su pokazali da je 29% bolesnika, a na osnovi opse&#x017E;nosti kalcifikacija ilija&#x010D;nih arterija dokazanih na CT-u, bilo isklju&#x010D;eno s &#x201E;liste &#x010D;ekanja&#x201C;. (<xref ref-type="bibr" rid="r18"><italic>18</italic></xref>) Prije spomenuta istra&#x017E;ivanja pokazuju i kako je CT pouzdana metoda za procjenu kalcificiranosti ilija&#x010D;nih arterija u bolesnika koji se spremaju za bubre&#x017E;nu presadbu. (<xref ref-type="bibr" rid="r18"><italic>18</italic></xref>)</p>
<p>Rezultati istra&#x017E;ivanja koja povezuju kalcificiranost ilija&#x010D;nih arterija i pre&#x017E;ivljenja presatka i bolesnika proturje&#x010D;ni su. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r17"><italic>17</italic></xref>, <xref ref-type="bibr" rid="r19"><italic>19</italic></xref>&#x2013;<xref ref-type="bibr" rid="r21"><italic>21</italic></xref>) Davis je pokazao kako prisutnost kalcifikacija zna&#x010D;ajno smanjuje pre&#x017E;ivljenje u odnosu na bolesnike koji nisu imali kalcifikacije. (<xref ref-type="bibr" rid="r19"><italic>19</italic></xref>) Chavent i suradnici su analizirali utjecaj kalcificiranosti aorte i ilija&#x010D;nih arterija na pre&#x017E;ivljenje presatka i bolesnika te na pojavnost sr&#x010D;ano&#x017E;ilnih doga&#x0111;aja u bolesnika s presa&#x0111;enim bubregom. (<xref ref-type="bibr" rid="r20"><italic>20</italic></xref>) Prema njihovim rezultatima aortoilija&#x010D;ne kalcifikacije nisu dovele do smanjenja pre&#x017E;ivljenja bolesnika i presatka, ali su utjecale na pojavnost sr&#x010D;ano&#x017E;ilnih doga&#x0111;aja. (<xref ref-type="bibr" rid="r20"><italic>20</italic></xref>) Disthabanchong i suradnici su prospektivno ispitivali povezanost kalcifikacija aorte i zdjeli&#x010D;nih arterija prikazanih radiografskom snimkom s ukupnom smrtno&#x0161;&#x0107;u u bolesnika s KBB-om podijeljenih u tri skupine (transplantirani bolesnici, bolesnici na hemodijalizi i oni koji jo&#x0161; nisu zapo&#x010D;eli dijaliti&#x010D;ko lije&#x010D;enje). Istra&#x017E;ivanje je pokazalo kako je stupanj kalcificiranosti zdjeli&#x010D;nih arterija neovisan prognosti&#x010D;ki &#x010D;imbenik smrtnosti bolesnika u sve tri skupine bolesnika. (<xref ref-type="bibr" rid="r14"><italic>14</italic></xref>)</p>
<p>Istra&#x017E;ivanje koje je obra&#x0111;ivalo 92 bolesnika iz na&#x0161;eg transplantacijskog centra u kojih je u&#x010D;injen prijetransplantacijski CT pokazalo je da 78% na&#x0161;ih bolesnika ima arterijske kalcifikacije u podru&#x010D;ju ilija&#x010D;nih arterija. U 5,4% na&#x0161;ih bolesnika, a na osnovi nalaza CT-a, promijenili smo stranu implantacije u odnosu na prvobitno planirano. (<xref ref-type="bibr" rid="r21"><italic>21</italic></xref>) Drugo na&#x0161;e istra&#x017E;ivanje koje je uklju&#x010D;ivalo 118 bolesnika s TB-om pokazalo je da je kalcificiranost ilija&#x010D;nih arterija bila zna&#x010D;ajno &#x010D;e&#x0161;&#x0107;a u mu&#x0161;kih bolesnika, starijih od 55 godina te onih na hemodijalizi. Bolesnici koji su imali kalcificiranije ilija&#x010D;ne arterije (odre&#x0111;ene pelvi&#x010D;nim kalcifikacijskim zbrojem ve&#x0107;im od 3) imali su lo&#x0161;ije pre&#x017E;ivljenje i presatka i bolesnika. (<xref ref-type="bibr" rid="r12"><italic>12</italic></xref>)</p>
<p>Arterijske kalcifikacije imaju veliku klini&#x010D;ku va&#x017E;nost jer njihova prisutnost govori u prilog mogu&#x0107;ega ote&#x017E;anog anastomoziranja krvnih &#x017E;ila. U slu&#x010D;aju izrazito opse&#x017E;nih kalcifikacija anastomozu nije niti mogu&#x0107;e u&#x010D;initi te treba odrediti drugo mjesto anastomoziranja. Naime, u bolesnika u kojih to nije ispravno procijenjeno mo&#x017E;e se dogoditi da moraju biti u&#x010D;injene dvije incizije kako bi se prona&#x0161;la pogodna arterija. Alternativno se u takvih bolesnika mo&#x017E;e u&#x010D;initi medijana laparotomija pa ako se primjereno mjesto za arterijsku anastomozu ne mo&#x017E;e prona&#x0107;i na jednoj strani, TB se, koriste&#x0107;i isti rez, mo&#x017E;e u&#x010D;initi na drugoj strani. Uporabom CT-a u prijetransplantacijskoj obradi primatelja nemogu&#x0107;nost pronalaska mjesta za arterijsku anastomozu svodi se na najmanju mogu&#x0107;u mjeru. (<xref ref-type="bibr" rid="r21"><italic>21</italic></xref>)</p>
</sec>
<sec sec-type="other2">
<title>Periferna &#x017E;ilna bolest</title>
<p>Ateroskleroza i periferna &#x017E;ilna bolest identificirani su kao neovisni rizi&#x010D;ni &#x010D;imbenici za gubitak presatka ili ukupno pre&#x017E;ivljenje nakon TB-a. (<xref ref-type="bibr" rid="r22"><italic>22</italic></xref>, <xref ref-type="bibr" rid="r23"><italic>23</italic></xref>) Osim &#x0161;to utje&#x010D;u na poslijetransplantacijske ishode, ote&#x017E;avaju i sam kirur&#x0161;ki postupak implantacije. Bolesnici sa zavr&#x0161;nim stupnjem KBB-a obi&#x010D;no imaju deblje aterosklerotske plakove u odnosu na standardnu populaciju, a tako&#x0111;er je debljina i intime i medije arterija ve&#x0107;a, pogotovo nakon duljeg vremena provedenoga na dijalizi. (<xref ref-type="bibr" rid="r24"><italic>24</italic></xref>)</p>
<p>Intraoperacijski pronalazak &#x017E;ilnih problema (prvenstveno kao posljedica uznapredovale ateroskleroze) mo&#x017E;e uklju&#x010D;ivati arterije koje se ne mogu klemati ili se ne mogu postaviti &#x0161;avovi te tada transplantacijski kirurg mora primijeniti razli&#x010D;ite druge tehnike. U obzir dolazi promjena planiranog mjesta anastomoze, arterijska endarterektomija ili kori&#x0161;tenje &#x017E;ilnih proteza. Nakon arteriotomije nije neobi&#x010D;no da se u tih bolesnika prona&#x0111;e kalcificirana intima koja se mo&#x017E;e lako odvojiti od ostatka stijenke arterije. Posebnu brigu treba posvetiti da se intima zadr&#x017E;i na arterijskoj stijenci kako bi se izbjegla disekcija arterije. U bolesnika s jako uznapredovalom kalcificirano&#x0161;&#x0107;u ilija&#x010D;nih arterija nu&#x017E;no je u&#x010D;initi endarterektomiju s plikacijskim &#x0161;avovima intime kako bi se sprije&#x010D;ilo odvajanje intime i posljedi&#x010D;na disekcija arterije. (<xref ref-type="bibr" rid="r25"><italic>25</italic></xref>) Tako&#x0111;er je mogu&#x0107;e u&#x010D;initi i premosnicu te na nju u&#x010D;initi TB. Krajnja mogu&#x0107;nost, ako nije mogu&#x0107;e napraviti sigurnu bubre&#x017E;nu presadbu, jest odustajanje od nje.</p>
<p>Procjena ateroskleroze ilija&#x010D;nih i perifernih arterija nogu u&#x010D;ini se prije TB-a kori&#x0161;tenjem slikovnih metoda, prvenstveno CT-a. CT je to&#x010D;na, sigurna i isplativa metoda za planiranje TB-a, ali i za probir periferne &#x017E;ilne bolesti. (<xref ref-type="bibr" rid="r26"><italic>26</italic></xref>)</p>
<p>Klasi&#x010D;na indikacija za revaskularizaciju kod periferne &#x017E;ilne bolesti jesu klaudikacije. No, ne postoji suglasnost o tome kada bi bilo pravo vrijeme za kirur&#x0161;ko lije&#x010D;enje te&#x0161;ke periferne &#x017E;ilne bolesti u kandidata za TB. Neke skupine preporu&#x010D;uju odvojene procedure, tj. lije&#x010D;enje periferne &#x017E;ilne bolesti &#x0161;est tjedana do dvanaest mjeseci prije predmnijevane TB te anastomoziranje bubre&#x017E;ne arterije presatka na &#x017E;ilnu protezu u ilija&#x010D;nom podru&#x010D;ju. Druge skupine preporu&#x010D;uju da se sve napravi tijekom jednog zahvata. U tih bolesnika tako&#x0111;er se mo&#x017E;e koristiti &#x017E;ilna proteza ili, ako je dostupan, svje&#x017E;i arterijski alograft darovatelja. (<xref ref-type="bibr" rid="r25"><italic>25</italic></xref>, <xref ref-type="bibr" rid="r27"><italic>27</italic></xref>&#x2013;<xref ref-type="bibr" rid="r29"><italic>29</italic></xref>) Alternativna mogu&#x0107;nost je u&#x010D;initi endarterektomiju primateljeve ilija&#x010D;ne arterije prije ili tijekom TB-a. (<xref ref-type="bibr" rid="r29"><italic>29</italic></xref>)</p>
<p>Prva TB na &#x017E;ilnu protezu opisana je 1974. godine, a prva simultana TB na aortoilija&#x010D;nu protezu 1977. godine. (<xref ref-type="bibr" rid="r30"><italic>30</italic></xref>, <xref ref-type="bibr" rid="r31"><italic>31</italic></xref>) Glavne prednosti simultane operacije jesu sljede&#x0107;e: nema te&#x0161;ko&#x0107;a tijekom disekcije na reoperaciji, tro&#x0161;kovi i duljina hospitalizacije su kra&#x0107;i i bolesnici trebaju samo jednu anesteziju. (<xref ref-type="bibr" rid="r32"><italic>32</italic></xref>) S druge strane postoji rizik od infekcije &#x017E;ilne proteze, pogotovo jer su ovi bolesnici pod imunosupresivnom terapijom. (<xref ref-type="bibr" rid="r33"><italic>33</italic></xref>&#x2013;<xref ref-type="bibr" rid="r35"><italic>35</italic></xref>) Prednost kori&#x0161;tenja arterijskog alografta jest manji broj infekcija u odnosu na kori&#x0161;tenje &#x017E;ilnih proteza. (<xref ref-type="bibr" rid="r36"><italic>36</italic></xref>)</p>
<p>U &#x010D;e&#x0161;kom istra&#x017E;ivanju u &#x010D;etrnaest bolesnika je u&#x010D;injena simultana TB na svje&#x017E;i arterijski alograft. (<xref ref-type="bibr" rid="r28"><italic>28</italic></xref>) Indikacija za &#x017E;ilnu rekonstrukciju bila je asimpomatska aneurizma abdominalne aorte ili aortoilija&#x010D;na stenoza/okluzija. Kao alograft su koristili aortobiiliofemoralni alograft (naj&#x010D;e&#x0161;&#x0107;e), iliofemoralni alograft, aortoilija&#x010D;ni alograft ili alograft prsne aorte. Tri bolesnika su umrla tijekom pra&#x0107;enja (medijan pra&#x0107;enja 55 mjeseci), ali niti u jednoga smrt nije bila vezana uz alograft. Tako&#x0111;er, niti u jednog bolesnika nije zamije&#x0107;ena infekcija alografta ili stvaranje aneurizme niti je bilo potrebe za sekundarnom intervencijom (angioplastika i/ili tromboliza) ili naknadnom rekonstrukcijom arterija. (<xref ref-type="bibr" rid="r28"><italic>28</italic></xref>)</p>
<p>Cyrek i suradnici su prikazali rezultate bubre&#x017E;ne presadbe u 1.691 bolesnika, a u njih osamnaest zbog ilija&#x010D;ne okluzivne bolesti bila je u&#x010D;injena revaskularizacija prije TB-a. (<xref ref-type="bibr" rid="r37"><italic>37</italic></xref>) Medijan pra&#x0107;enja je bio 114 mjeseci. Revaskularizacija je u&#x010D;injena kako bi se omogu&#x0107;io dobar dotok krvi presatku i sprije&#x010D;ila ishemija noge. Revaskularizacija je u&#x010D;injena jedan do dvadeset i jedan mjesec (prosje&#x010D;no sedam mjeseci) prije TB-a. U petero bolesnika je implantirana &#x017E;ilna proteza (u tri bolesni-</p>
<p>ka proteza od politetrafluoroetilena, u dva bolesnika krioprezervirane ilija&#x010D;ne krvne &#x017E;ile), u &#x010D;etiri bolesnika su stentirane zajedni&#x010D;ke ilija&#x010D;ne arterije, u tri bolesnika u&#x010D;injena je transluminalna angioplastika zajedni&#x010D;kih ilija&#x010D;nih arterija, u dva bolesnika je u&#x010D;injena endarterektomija zajedni&#x010D;ke lija&#x010D;ne uz kori&#x0161;tenje zakrpe od gove&#x0111;eg perikarda, u dva bolesnika angioplastika s postavljanjem stenta u zajedni&#x010D;ke ilija&#x010D;ne arterije, u jednog bolesnika aortofemoralna premosnica, a u jednoga aortobifemoralna premosnica. U svih bolesnika TB je u&#x010D;injena na stranu u&#x010D;injene revaskularizacije. Nije bilo infekcije arterijskog grafta ili razvoja stenoze niti gubitka uda zbog ishemije. Tako&#x0111;er nije bilo perioperacijskog pobola ni smrtnosti vezanih uz &#x017E;ilne procedure. Jednomjese&#x010D;no pre&#x017E;ivljenje i presatka i bolesnika bilo je 100%, jednogodi&#x0161;nje pre&#x017E;ivljenje 94,1% te petogodi&#x0161;nje pre&#x017E;ivljenje 84,7%. (<xref ref-type="bibr" rid="r37"><italic>37</italic></xref>) Autori su zaklju&#x010D;ili kako je &#x017E;ilno odnosno endovaskularno rje&#x0161;avanje uznapredovale periferne arterijske bolesti u ilija&#x010D;nom podru&#x010D;ju siguran postupak koji treba u&#x010D;initi prije TB-a te se time stvara pretpostavka za kasniju uspje&#x0161;nu TB.</p>
</sec>
<sec sec-type="other3">
<title>Retransplantacija</title>
<p>Oko 25% bolesnika sa zavr&#x0161;nim stupnjem KBB-a ujedno je i na &#x201E;listi &#x010D;ekanja&#x201C; za bubre&#x017E;nu presadbu. Me&#x0111;u tim bolesnicima oko 15% u budu&#x0107;nosti &#x0107;e trebati retransplantaciju zbog prestanka funkcije presatka grafta. (<xref ref-type="bibr" rid="r38"><italic>38</italic></xref>, <xref ref-type="bibr" rid="r39"><italic>39</italic></xref>) Iako je retransplantacija kirur&#x0161;ki i imunosni izazov, pre&#x017E;ivljenje bolesnika je usporedivo s onim kod prve TB, a zna&#x010D;ajno bolje u odnosu na one bolesnike koji su se vratili na dijaliti&#x010D;ko lije&#x010D;enje. (<xref ref-type="bibr" rid="r3"><italic>3</italic></xref>, <xref ref-type="bibr" rid="r40"><italic>40</italic></xref>) Tako&#x0111;er je pre&#x017E;ivljenje presatka bolje u prve TB u odnosu na retransplantaciju, i to jednogodi&#x0161;nje pre&#x017E;ivljenje presatka 95,6% prema 95,4%, a petogodi&#x0161;nje pre&#x017E;ivljenje 70,4% prema 65,3%. (<xref ref-type="bibr" rid="r39"><italic>39</italic></xref>) Naj&#x010D;e&#x0161;&#x0107;i uzrok gubitka drugog i svakog slijede&#x0107;eg presatka u prvoj godini nakon TB-a je &#x017E;ilna tromboza (kao posljedica slo&#x017E;enijega kirur&#x0161;kog zahvata) ili imunolo&#x0161;ka reakcija odbacivanja. (<xref ref-type="bibr" rid="r3"><italic>3</italic></xref>)</p>
<p>Druga TB (odnosno prva retransplantacija) u pravilu se radi na suprotnu stranu od one inicijalno kori&#x0161;tene. Naj&#x010D;e&#x0161;&#x0107;e, kod takve TB nema nekih posebnih pote&#x0161;ko&#x0107;a. No, druga i svaka kasnija retransplantacija kirur&#x0161;ki su daleko zahtjevnije. To su bolesnici u kojih su u&#x010D;injeni operacijski zahvati u obje ilija&#x010D;ne jame (TB, ponekad i transplantektomija) &#x0161;to posljedi&#x010D;no dovodi do toga da se u tom podru&#x010D;ju nalazi puno o&#x017E;iljnoga tkiva i fibroze oko ilija&#x010D;nih krvnih &#x017E;ila, ali i donjeg dijela mokra&#x0107;noga sustava. (<xref ref-type="bibr" rid="r41"><italic>41</italic></xref>) Dodatno, radi se o dugogodi&#x0161;njim bolesnicima sa zavr&#x0161;nim stupnjem KBB-a i svim posljedicama toga stanja s brojnim komorbiditetima. Trenuta&#x010D;no ne postoji standardizirani pristup ili tehnika koji bi se mogli primijeniti u svih bolesnika kojima je potrebna retransplantacija. Izra&#x017E;enost anatomskih promjena, prisutnost o&#x017E;iljnog tkiva unutar zdjelice kao i fibroze oko ilija&#x010D;nih krvnih &#x017E;ila predstavljaju glavne &#x010D;imbenike koji utje&#x010D;u na kirur&#x0161;ki postupak koji se mora prilagoditi svakom bolesniku posebno. Primjena slikovnih metoda, koja je nu&#x017E;na, tako&#x0111;er je ograni&#x010D;ene vrijednosti jer ne mo&#x017E;e predvidjeti situacije koje se mogu javiti tijekom zahvata. (<xref ref-type="bibr" rid="r41"><italic>41</italic></xref>)</p>
<p>Nekoliko je kirur&#x0161;kih pristupa kod retransplantacije: heterotopna ekstraperitonealna TB (s prethodnom graftektomijom ili bez nje), heterotopna intraperitoneelna TB ili ortotopna TB. (<xref ref-type="bibr" rid="r42"><italic>42</italic></xref>) Ve&#x0107;ina je autora mi&#x0161;ljenja kako je ekstraperitonealni pristup prvi izbor kod retransplantacije. (<xref ref-type="bibr" rid="r38"><italic>38</italic></xref>, <xref ref-type="bibr" rid="r41"><italic>41</italic></xref>) Koristi se ista incizija kao i kod prethodne TB. Postupno i oprezno se prika&#x017E;e &#x201E;kirur&#x0161;ko polje&#x201C;, s naglaskom da se nerijetko ilija&#x010D;ne krvne &#x017E;ile nalaze u povr&#x0161;nijem polo&#x017E;aju nego &#x0161;to je to uobi&#x010D;ajeno (tzv. pseudoektopi&#x010D;an polo&#x017E;aj). Njihov povr&#x0161;niji polo&#x017E;aj je naj&#x010D;e&#x0161;&#x0107;e posljedica razvoja poslijetransplantacijskog o&#x017E;iljavanja u tom podru&#x010D;ju s &#x201E;povla&#x010D;enjem&#x201C; &#x017E;ilnih struktura. Disekcija krvnih &#x017E;ila mora biti u&#x010D;injena vrlo oprezno dok se ne dobije cjelokupna duljina krvnih &#x017E;ila koja je potrebna za sigurno anastomoziranje. U suprotnome, potencijalne ozljede krvnih &#x017E;ila tijekom disekcije mogu biti zahtjevne za rje&#x0161;avanje zbog gubitka elasticiteta krvnih &#x017E;ila. Opisana je i heterotopna ekstraperitonealna TB s kori&#x0161;tenjem krvnih &#x017E;ila ekstirpiranog presatka. (<xref ref-type="bibr" rid="r43"><italic>43</italic></xref>) Koristi se prvobitna incizija kojom se pristupi na presadak i nakon toga se pa&#x017E;ljivo mobilizira cijeli presadak izbjegavaju&#x0107;i disekciju ilija&#x010D;nih krvnih &#x017E;ila. Nakon &#x0161;to je presadak potpuno mobiliziran u&#x010D;ini se njegova potpuna ekscizija uz kontrolu hilusa. Potom se u&#x010D;ine termino-terminalne anastomoze izme&#x0111;u krvnih &#x017E;ila presatka i ostatka hilarnih krvnih &#x017E;ila prethodnog presatka.</p>
<p>Heterotopna intraperitonealna TB naj&#x010D;e&#x0161;&#x0107;e se rabi u pedijatrijskoj populaciji, ali mo&#x017E;e se koristiti i u odraslih osoba. Medijanom laparotomijom pristupa se u trbu&#x0161;nu &#x0161;upljinu. Nakon toga se disekcijom cekuma odnosno sigmoidnog kolona (ovisno o strani za TB) prika&#x017E;u ilija&#x010D;ne krvne &#x017E;ile. Presadak se postavi u ilija&#x010D;nu jamu ili medijalno. Krvne &#x017E;ile se anastomoziraju terminolateralno, naj&#x010D;e&#x0161;&#x0107;e bubre&#x017E;na arterija sa zajedni&#x010D;kom ilija&#x010D;nom arterijom ili aortom odnosno bubre&#x017E;na vena sa zajedni&#x010D;kom ilija&#x010D;nom venom ili donjom &#x0161;upljom venom. (<xref ref-type="bibr" rid="r41"><italic>41</italic></xref>) Ortotopna TB je opisana u kasnijem tekstu.</p>
<p>Loupy i suradnici su prikazali rezultate TB-a u 61 bolesnika u kojega je u&#x010D;injena tre&#x0107;a, &#x010D;etvrta ili peta implantacija u razdoblju izme&#x0111;u 1974. i 2005. godine. (<xref ref-type="bibr" rid="r44"><italic>44</italic></xref>) Pre&#x017E;ivljenje presatka jednu, pet i deset godina nakon TB-a bilo je 91%, 74% te 57%. Tri (5%) presatka su izgubljena zbog tehni&#x010D;kih komplikacija. Heterotopni retroperitonealni pristup koristili su u 59% bolesnika, a transperitonealni heterotopni u 41% bolesnika. Za vensku anastomozu naj&#x010D;e&#x0161;&#x0107;e su koristili donju &#x0161;uplju venu. Zabilje&#x017E;ene su tehni&#x010D;ke te&#x0161;ko&#x0107;e (naj&#x010D;e&#x0161;&#x0107;e zbog kalcificiranosti arterija odnosno ateroskleroze) u 50% bolesnika, &#x0161;to je dovelo do ukupno 45 kirur&#x0161;kih komplikacija u 30 bolesnika (jedanaest urolo&#x0161;kih komplikacija, &#x0161;est &#x017E;ilnih, devet infektivnih, dvanaest krvarenja, tri digestivne komplikacije i &#x010D;etiri komplikacije vezane uz ranu). No, samo su &#x017E;ilne komplikacije imale utjecaj na pre&#x017E;ivljenje presatka. Tako&#x0111;er je od svih komplikacija samo njih 16% zahtijevalo kirur&#x0161;ku reviziju. (<xref ref-type="bibr" rid="r44"><italic>44</italic></xref>) To sve govori u prilog tomu da su retransplantacije kirur&#x0161;ki slo&#x017E;enije operacije i da zahtijevaju iskusan kirur&#x0161;ki tim, ali i da je ishod TB-a dobar.</p>
<p>Ooms i suradnici su analizirali 99 bolesnika u kojih je u&#x010D;injena tre&#x0107;a TB. (<xref ref-type="bibr" rid="r38"><italic>38</italic></xref>) U svih je kori&#x0161;ten ekstraperitonealni heterotopni pristup. U velike ve&#x0107;ine bolesnika u&#x010D;injena je transplantektomija, a nakon toga TB. U ve&#x0107;ine bolesnika anastomoza se uspjela u&#x010D;initi na vanjsku ilija&#x010D;nu arteriju i venu. U 5% bolesnika arterijska anastomoza je u&#x010D;injena na &#x017E;ilnu protezu. Broj &#x017E;ilnih komplikacija (8%) bio je zna&#x010D;ajno ve&#x0107;i u odnosu na bolesnike koji su prvi put transplantirani ili im je u&#x010D;injena druga TB, pogotovo u prvoj godini nakon TB-a. Jednogodi&#x0161;nje pre&#x017E;ivljenje presatka je bilo 76%, a desetogodi&#x0161;nje 47%, &#x0161;to je bilo lo&#x0161;ije u odnosu na bolesnike s prvom odnosno drugom TB. No, ukupno pre&#x017E;ivljenje nije se razlikovalo izme&#x0111;u ovih skupina.</p>
<p>Broj &#x017E;ilnih komplikacija bio je zna&#x010D;ajno ve&#x0107;i (&#x010D;ak i do 39%) u bolesnika u kojih se prilikom retransplantacije kao mjesto TB-a koristila ilija&#x010D;na jama. (<xref ref-type="bibr" rid="r45"><italic>45</italic></xref>) Takav visok postotak bio je prisutan bez obzira je li se transplantektomija radila prije TB-a ili tijekom retransplantacije. Autori su naglasili kako je takav visok postotak &#x017E;ilnih komplikacija posljedica ote&#x017E;ane disekcije krvnih &#x017E;ila, kako postoji pove&#x0107;an rizik za ozljedu krvnih &#x017E;ila i krvarenje, kako bolesnici imaju kra&#x0107;e pre&#x017E;ivljenje presatka te imaju ve&#x0107;i broj imunolo&#x0161;kih i &#x017E;ilnih komplikacija (pogotovo arterijskih tromboza).</p>
<p>U skupini od 82 bolesnika s retransplantacijom (74 bolesnika tre&#x0107;a TB, osam bolesnika &#x010D;etvrta TB) jednogodi&#x0161;nje pre&#x017E;ivljenje je bilo 88%, a petogodi&#x0161;nje pre&#x017E;ivljenje 76,4%. (<xref ref-type="bibr" rid="r46"><italic>46</italic></xref>) U 80% bolesnika u&#x010D;injena je heterotopna TB, a u 20% ortotopna TB. &#x017D;ilne odnosno imunolo&#x0161;ke komplikacije javile su se u 9% odnosno 17% bolesnika.</p>
<p>Zaklju&#x010D;no, prijeoperacijska priprema bolesnika u kojih treba u&#x010D;initi retransplantaciju treba svakako uklju&#x010D;ivati slikovnu dijagnostiku krvnih &#x017E;ila. Kod prve retransplantacije implantaciju je najbolje u&#x010D;initi u kontralateralnu ilija&#x010D;nu jamu. Kod druge i ostalih retransplantacija preporu&#x010D;uje se ekstraperitonealna heterotopna TB, ali je mogu&#x0107;e u&#x010D;initi i ortotopnu bubre&#x017E;nu presadbu. Za bolesnike je svakako bolja retransplantacija nego da ostanu na dijaliti&#x010D;kom lije&#x010D;enju. (<xref ref-type="bibr" rid="r3"><italic>3</italic></xref>, <xref ref-type="bibr" rid="r40"><italic>40</italic></xref>)</p>
</sec>
<sec sec-type="other4">
<title>Ortotopna bubre&#x017E;na presadba</title>
<p>Ortotopna bubre&#x017E;na presadba je prikladna alternativa za bolesnike u kojih zbog uznapredovale ateroskleroze ilija&#x010D;nih krvnih &#x017E;ila, tromboze donje &#x0161;uplje vene, anomalija zdjeli&#x010D;nih vena, postojanja aortoilija&#x010D;nih premosnica, pretilosti ili prethodnih TB-a nije mogu&#x0107;a heterotopna bubre&#x017E;na presadba. (<xref ref-type="bibr" rid="r47"><italic>47</italic></xref>, <xref ref-type="bibr" rid="r48"><italic>48</italic></xref>) U odnosu na heterotopnu TB radi se o tehni&#x010D;ki zahtijevnijoj operaciji uz mogu&#x0107;e te&#x0161;ke komplikacije poput ozljede gu&#x0161;tera&#x010D;e s posljedi&#x010D;nom fistulom. (<xref ref-type="bibr" rid="r49"><italic>49</italic></xref>, <xref ref-type="bibr" rid="r50"><italic>50</italic></xref>) U osnovi, nakon nefrektomije nativnog bubrega presadak se implantira na njegovo mjesto koriste&#x0107;i za anastomoziranje bubre&#x017E;ne, lijenalne ili druge velike krvne &#x017E;ile. Uvjet za ortotopnu TB su krvne &#x017E;ile u lumbalnoj lo&#x017E;i prikladne za anastomozu te normalni pijelon i mokra&#x0107;ovod. Svakom potencijalnom primatelju bubrega kojemu se planira u&#x010D;initi ortotopna TB treba prije TB-a u&#x010D;initi CT-angiografiju, odnosno digitalnu subtracijsku angiografiju abdominalne aorte s njezinim ograncima, radi prikaza veli&#x010D;ine i izgleda bubre&#x017E;ne arterije, lijenalne arterije i aorte. Kod sumnje na abnormalnosti uretera i pijelona treba u&#x010D;ini CT-urografiju odnosno retrogradnu ureteropijelografiju. (<xref ref-type="bibr" rid="r47"><italic>47</italic></xref>&#x2013;<xref ref-type="bibr" rid="r50"><italic>50</italic></xref>)</p>
<p>Kirur&#x0161;ki postupak je ve&#x0107; niz godina istovjetan. Lumbotomijskim rezom po 11. ili 12. rebru s lijeve strane pristupa se u lumbalnu lo&#x017E;u. Primateljev vlastiti bubreg se osloba&#x0111;a od masne kapsule i prikazuju se njegove krvne &#x017E;ile. Krvne &#x017E;ile bubrega se podve&#x017E;u duboko u sinusu bubrega kako bi se maksimalno o&#x010D;uvala njihova duljina. U slu&#x010D;aju da bubre&#x017E;na arterija nije prikladna, u pravilu se ispreparira lijenalna arterija. Pijelon se odvoji od bubrega u bubre&#x017E;nom sinusu. Nakon nefrektomije nativnog bubrega, bubre&#x017E;na arterija i vena presatka spoje se terminoterminalno s nativnim &#x017E;ilama primatelja. Zatim se putem ureteralne endoproteze u&#x010D;ini pijelopijeli&#x010D;na ili pijeloureteralna anastomoza produ&#x017E;nim resorbiraju&#x0107;im &#x0161;avovima.</p>
<p>Prvu ortotopnu TB u&#x010D;inio je Lawler 1950. godine, a istra&#x017E;ivanje s najve&#x0107;im brojem bolesnika u kojih je u&#x010D;injena ortotopna TB potje&#x010D;e iz Barcelone gdje su ih u tridesetogodi&#x0161;njem razdoblju u&#x010D;inili 223. (<xref ref-type="bibr" rid="r48"><italic>48</italic></xref>, <xref ref-type="bibr" rid="r51"><italic>51</italic></xref>) Neke prednosti ortotopnog smje&#x0161;taja bubrega uklju&#x010D;uju izbjegavanje vezikoureteralnog refluksa, stenoze na ureterovezikalnoj anastomozi, manju u&#x010D;estalost erektilne disfunkcije (ne koristi se unutarnja ilija&#x010D;na arterija na koju se nekada naj&#x010D;e&#x0161;&#x0107;e radila arterijska anastomoza) i fiziolo&#x0161;ki smje&#x0161;taj bubrega. No, u novije vrijeme ortotopna TB se koristi samo u bolesnika s te&#x0161;kom aterosklerozom ilija&#x010D;nih arterija ili kada su bili prisutni presatci u ilija&#x010D;nim jamama. (<xref ref-type="bibr" rid="r48"><italic>48</italic></xref>)</p>
<p>Kod heterotopne TB bubre&#x017E;na arterija presatka naj&#x010D;e&#x0161;&#x0107;e se anastomozira na vanjsku ilija&#x010D;nu arteriju, bubre&#x017E;na vena na vanjsku ilija&#x010D;nu venu, a mokra&#x0107;ovod presatka na mokra&#x0107;ni mjehur (naj&#x010D;e&#x0161;&#x0107;e ekstravezikalnom tehnikom). Kod ortotopne TB mogu&#x0107;nosti anastomoziranja krvnih &#x017E;ila daleko su ve&#x0107;e. Musquera i suradnici su prikazali kako su za arterijsku anastomozu naj&#x010D;e&#x0161;&#x0107;e koristili lijenalnu arteriju (85% bolesnika), zatim bubre&#x017E;nu arteriju (7%), a daleko rje&#x0111;e aortu ili donju mezenteri&#x010D;nu arteriju (8%). (<xref ref-type="bibr" rid="r48"><italic>48</italic></xref>) Venska anastomoza je u 92% bolesnika u&#x010D;injena izme&#x0111;u bubre&#x017E;ne vene presatka i bubre&#x017E;ne vene primatelja, a rijetko je kori&#x0161;tena vena kava i lijenalna vena. Ureteralna anastomoza je u&#x010D;injena pijeloureteralnom anastomozom (40%) ili pijelopijeli&#x010D;nom anastomozom (47%), a iznimno s ureteroureteralnom anastomozom ili ureterokalikostomijom. Ureteralna anastomoza je u ve&#x0107;ine bolesnika za&#x0161;ti&#x0107;ena pomo&#x0107;u JJ ureteralne endoproteze. Broj kirur&#x0161;kih komplikacija bio je podjednak kod ortotopne i heterotopne TB. &#x017D;ilne komplikacije nakon ortotopne TB uklju&#x010D;ivale su arterijsku stenozu u 3,1% bolesnika, arterijsku trombozu u 1,7% bolesnika te vensku trombozu u 0,44% bolesnika. Dobro je poznato kako se arterijska stenoza mo&#x017E;e lije&#x010D;iti endovaskularnim ili otvorenim kirur&#x0161;kim pristupom, a arterijska i venska tromboza naj&#x010D;e&#x0161;&#x0107;e zahtijevaju transplantektomiju.</p>
<p>Urolo&#x0161;ke komplikacije (stenoza mokra&#x0107;ovoda i fistula mokra&#x0107;ovoda) kod heterotopne TB se javljaju u 2 &#x2013; 12,5% bolesnika. (<xref ref-type="bibr" rid="r52"><italic>52</italic></xref>, <xref ref-type="bibr" rid="r53"><italic>53</italic></xref>) Stopa komplikacija raste i do 28% kada se za ureteralnu anastomozu koristi primateljev mokra&#x0107;ovod ili pijelon. (<xref ref-type="bibr" rid="r54"><italic>54</italic></xref>) Kod ortotopne TB u&#x010D;estalost urolo&#x0161;kih komplikacija je do 12%. (<xref ref-type="bibr" rid="r48"><italic>48</italic></xref>) Urolitijaza je rijetka komplikacija koja se razvija u bolesnika s bubre&#x017E;nom presadbom. Opisana su tri bolesnika s ortotopnom TB u kojih je do&#x0161;lo do razvoja nefrolitijaze. (<xref ref-type="bibr" rid="r48"><italic>48</italic></xref>) U dvojice bolesnika uspje&#x0161;no je u&#x010D;injeno izvantjelesno mrvljenje kamenaca, a u jednoga pijelolitotomija. Bitno je napomenuti da je kod ortotopne TB ureteralno u&#x0161;&#x0107;e nepromijenjeno te je u slu&#x010D;aju potrebe olak&#x0161;an retrogradni endoskopski pristup u bubreg u odnosu na heterotopnu TB.</p>
<p>Transplantektomija nakon ortotopne TB bila je u&#x010D;injena u &#x0161;est bolesnika (5%), od toga u njih pet (4,3%) zbog odbacivanja, a u jednoga (0,7%) zbog urinarne fistule nakon ureterokalikostomije. Smrtnost od operacije iznosila je 2,2%, od toga su dva (1,4%) bolesnika umrla od sepse te jedan (0,7%) zbog fistule gu&#x0161;tera&#x010D;e. (<xref ref-type="bibr" rid="r49"><italic>49</italic></xref>)</p>
<p>Pre&#x017E;ivljenje presatka u bolesnika s ortotopnom TB bilo je 87,7%, 59,3% i 34,5% nakon jedne, deset i dvadeset godina, a pre&#x017E;ivljenje bolesnika 92,2%, 78,3% i 62,5%. (<xref ref-type="bibr" rid="r48"><italic>48</italic></xref>) Uspore&#x0111;uju&#x0107;i pre&#x017E;ivljenje bolesnika i pre&#x017E;ivljenje presatka ne bilje&#x017E;i se razlika izme&#x0111;u skupina bolesnika s ortotopnom i onih s heterotopnom TB. (<xref ref-type="bibr" rid="r48"><italic>48</italic></xref>) No, ipak su ve&#x0107;i broj &#x017E;ilnih komplikacija kao i ve&#x0107;a smrtnost bili prisutni u bolesnika s ortotopnom bubre&#x017E;nom presadbom u kojih je takva TB u&#x010D;injena zbog uznapredovale kalcificiranosti ilija&#x010D;nih arterija odnosno u bolesnika u kojih je to bila retransplantacija.</p>
<p>Metaanaliza koja je uklju&#x010D;ivala &#x010D;etiri istra&#x017E;ivanja s ukupno 243 bolesnika u kojih je u&#x010D;injena ortotopna bubre&#x017E;na presadba pokazala je da oko 19% bolesnika s takvom TB ima urolo&#x0161;ke komplikacije, 15% bolesnika &#x017E;ilne komplikacije, ukupno pre&#x017E;ivljenje bolesnika bilo je 92%, a ukupno pre&#x017E;ivljenje presatka 88%. I u&#x010D;estalost komplikacija kao i pre&#x017E;ivljenje bili su sli&#x010D;ni u odnosu na bolesnike u kojih je u&#x010D;injena standardna heterotopna bubre&#x017E;na presadba. (<xref ref-type="bibr" rid="r55"><italic>55</italic></xref>)</p>
<p>U na&#x0161;em transplantacijskom centru do sada smo u &#x0161;est bolesnika u&#x010D;inili ortotopnu bubre&#x017E;nu presadbu (prvu 2012. godine kao prvi transplantacijski centar u Republici Hrvatskoj). (<xref ref-type="bibr" rid="r56"><italic>56</italic></xref>&#x2013;<xref ref-type="bibr" rid="r59"><italic>59</italic></xref>) U &#x010D;etiri bolesnika odlu&#x010D;ili smo se za ortotopnu TB zbog izrazite obostrane ateroskleroze ilija&#x010D;nih arterija, a u dvoje bolesnika zbog urinarne derivacije (<italic>ileum conduit</italic> i <italic>Mainz-pouch III</italic>). CT-angiografija je pokazala kako su lijenalna i obje bubre&#x017E;ne arterije pogodne za TB. Ortotopna TB je u&#x010D;injena u pet mu&#x0161;karaca i jedne &#x017E;ene, a dob bolesnika je bila izme&#x0111;u 32 i 71 godine. Svi bolesnici su prije TB-a bili na hemodijalizi. Uzrok bubre&#x017E;nom zatajenju bila je &#x0161;e&#x0107;erna bolest (dva bolesnika), neurogeni mokra&#x0107;ni mjehur (dva bolesnika), kroni&#x010D;ni glomerulonefritis (jedan bolesnik) i kroni&#x010D;ni pijelonefritis (jedan bolesnik). U tri bolesnika bubre&#x017E;nu smo arteriju presatka anastomozirali na bubre&#x017E;nu arteriju primatelja, a u po jednoga na lijenalnu arteriju, aortu i zajedni&#x010D;ku ilija&#x010D;nu arteriju. Za vensku anastomozu koristili smo bubre&#x017E;nu venu primatelja (&#x010D;etiri bolesnika) i donju</p>
<p>&#x0161;uplju venu (dva bolesnika). U dva bolesnika u&#x010D;inili smo pijelopijeli&#x010D;nu anastomozu, u dva pijeloureteralnu, a u dva anastomozu na urinarnu derivaciju. U dva bolesnika je do&#x0161;lo do razvoja urinarne fistule na pijelopijeli&#x010D;noj anastomozi te je ista uspje&#x0161;no rije&#x0161;ena anastomozom pijelona na mokra&#x0107;ovod. U jednog bolesnika do&#x0161;lo je do iznenadne sr&#x010D;ane smrti petoga dana nakon TB-a, a jedan bolesnik je umro pet godina nakon TB-a zbog sepse. U svih ostalih bolesnika (&#x010D;etvoro) funkcija presatka je do dana&#x0161;njeg dana stabilna (sije&#x010D;anj 2024. godine).</p>
</sec>
<sec sec-type="other5">
<title>Intraoperacijske &#x017E;ilne komplikacije</title>
<p>U bolesnika s TB-om poslijeoperacijske &#x017E;ilne komplikacije &#x010D;e&#x0161;&#x0107;e su opisivane nego intraoperacijske &#x017E;ilne komplikacije, a one mogu uklju&#x010D;ivati krvne &#x017E;ile presatka i/ili primateljeve krvne &#x017E;ile (naj&#x010D;e&#x0161;&#x0107;e ilija&#x010D;ne). Njihova va&#x017E;nost je u tome da je potrebno njihovo promptno zbrinjavanje kako bi se izbjegao gubitak presatka ili druge te&#x0161;ke komplikacije poput ishemije donjeg uda. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>) Manje krvarenje s mjesta anastomoze naj&#x010D;e&#x0161;&#x0107;a je intraoperacijska komplikacija koja se relativno lako rje&#x0161;ava dodatnim &#x0161;avovima uz bubreg <italic>in situ</italic>. Sli&#x010D;no je i s krvarenjem iz nekog od ogranka bubre&#x017E;ne arterije ili vene. No, ponekad se javljaju i ozbiljne komplikacije poput tromboze bubre&#x017E;ne vene ili arterije, zna&#x010D;ajnog su&#x017E;enja na mjestu anastomoze bubre&#x017E;ne arterije ili vene s ilija&#x010D;nim krvnim &#x017E;ilama, disekcija ilija&#x010D;ne arterije ili masivno krvarenje, &#x0161;to sve zahtijeva hitno intraoperacijsko zbrinjavanje ponovnom eksplantacijom bubrega (engl. &#x201E;<italic>one-step back procedure</italic>&#x201C;, tzv. postupak korak unatrag). Presadak se mora eksplantirati uz ponovno klemanje ilija&#x010D;nih krvnih &#x017E;ila. Nakon eksplantacije bubreg se mora dobro isprati hladnom perfuzijskom otopinom te mora biti u ledu. <italic>Ex vivo</italic> treba otkloniti sve ono &#x0161;to je dovelo do komplikacije (na presatku i/ili ilija&#x010D;nim krvnim &#x017E;ilama) i nakon toga ponovno u&#x010D;initi implantaciju bubrega. Brzo prepoznavanje ovih te&#x0161;kih akutnih &#x017E;ilnih komplikacija nu&#x017E;no je kako bi se spasio bubreg, kao i brza odluka o eksplantaciji bubrega i njegovoj reperfuziji. Iako nisu &#x010D;esta, neprepoznata gore navedena stanja dovode do sigurnog gubitka presatka. Ako se pak prepoznaju na vrijeme i rije&#x0161;e intraoperacijski, poslijeoperacijski tijek i ishodi su isti kao u standardne populacije u koje je u&#x010D;injena bubre&#x017E;na presadba. (<xref ref-type="bibr" rid="r25"><italic>25</italic></xref>, <xref ref-type="bibr" rid="r60"><italic>60</italic></xref>, <xref ref-type="bibr" rid="r61"><italic>61</italic></xref>)</p>
</sec>
<sec sec-type="other6">
<title>Zaklju&#x010D;ak</title>
<p>Bubre&#x017E;na presadba predstavlja metodu izbora u lije&#x010D;enju bolesnika sa zavr&#x0161;nim stadijem KBB-a. Pove&#x0107;anje dobi darovatelja i primatelja, visoka u&#x010D;estalost periferne &#x017E;ilne bolesti u bolesnika koji su kandidati za TB kao i potreba za retransplantacijom doveli su do toga da implantacija bubrega mo&#x017E;e postati kirur&#x0161;ki izuzetno zahtjevan postupak, pogotovo s vaskularne strane. Zbog toga je neophodna odgovaraju&#x0107;a prijeoperacijska priprema bolesnika koja uklju&#x010D;uje kori&#x0161;tenje slikovnih metoda poput CT-a. Osim kori&#x0161;tenja ilija&#x010D;nih krvnih &#x017E;ila mo&#x017E;e se implantacija bubrega u&#x010D;initi i na proksimalnije krvne &#x017E;ile, &#x017E;ilnu protezu ili se mo&#x017E;e u&#x010D;initi ortotopna transplantacija. Zaklju&#x010D;no, u vaskularno zahtjevnih bolesnika TB je izazovan kirur&#x0161;ki postupak koji zahtijeva dobro obra&#x0111;enog i informiranog pacijenta te iskusan kirur&#x0161;ki tim.</p>
</sec>
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<back>
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<fn fn-type="conflict">
<p content-type="fn-title">INFORMACIJE O SUKOBU INTERESA</p>
<p>Autori nisu deklarirali sukob interesa relevantan za ovaj rad.</p>
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</fn-group>
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