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<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-142-155</article-id>
<article-id pub-id-type="doi">10.26800/LV-142-5-6-28</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Drugs and procedures</subject></subj-group>
</article-categories>
<title-group>
<article-title>Regionalne anesteziolo&#x0161;ke tehnike lije&#x010D;enja karcinomske boli</article-title>
<trans-title-group xml:lang="en">
<trans-title>Regional anesthesia techniques in cancer pain management</trans-title>
</trans-title-group>
</title-group>
<contrib-group>
<contrib contrib-type="author"><name><surname>&#x0160;aki&#x0107;</surname><given-names>Livija</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref><xref ref-type="aff" rid="aff5"><sup>5</sup></xref></contrib><contrib contrib-type="author"><name><surname>&#x017D;up&#x010D;i&#x0107;</surname><given-names>Miroslav</given-names></name><xref ref-type="aff" rid="aff2"><sup>2</sup></xref><xref ref-type="aff" rid="aff3"><sup>3</sup></xref><xref ref-type="aff" rid="aff4"><sup>4</sup></xref></contrib><contrib contrib-type="author"><name><surname>&#x0160;klebar</surname><given-names>Ivan</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref><xref ref-type="aff" rid="aff5"><sup>5</sup></xref></contrib><contrib contrib-type="author"><name><surname>&#x0160;imurina</surname><given-names>Tatjana</given-names></name><xref ref-type="aff" rid="aff4"><sup>4</sup></xref><xref ref-type="aff" rid="aff6"><sup>6</sup></xref><xref ref-type="aff" rid="aff7"><sup>7</sup></xref></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5413-6382</contrib-id><name><surname>&#x0160;aki&#x0107; Zdrav&#x010D;evi&#x0107;</surname><given-names>Kata</given-names></name><xref ref-type="aff" rid="aff5"><sup>5</sup></xref><xref ref-type="aff" rid="aff8"><sup>8</sup></xref></contrib>
<aff id="aff1"><label>1</label>Klinika za anesteziologiju, reanimatologiju i intenzivnu medicinu, Klini&#x010D;ka bolnica Sveti Duh, <addr-line>Zagreb</addr-line></aff>
<aff id="aff2"><label>2</label>Klinika za anesteziologiju, intenzivnu medicinu i lije&#x010D;enje boli, Medicinski fakultet Sveu&#x010D;ili&#x0161;ta u Rijeci, Klini&#x010D;ki bolni&#x010D;ki centar Rijeka</aff>
<aff id="aff3"><label>3</label>Katedra za fiziologiju, imunologiju i patofiziologiju, Medicinski fakultet Sveu&#x010D;ili&#x0161;ta u Rijeci</aff>
<aff id="aff4"><label>4</label>Medicinski fakultet Sveu&#x010D;ili&#x0161;ta &#x201E;Josip Juraj Strossmayer&#x201D; u Osijeku</aff>
<aff id="aff5"><label>5</label>Hrvatsko katoli&#x010D;ko sveu&#x010D;ili&#x0161;te, <addr-line>Zagreb</addr-line></aff>
<aff id="aff6"><label>6</label>Odjel za anesteziologiju, reanimatologiju i intenzivnu medicinu, Sveu&#x010D;ili&#x0161;te u Zadru, Op&#x0107;a bolnica Zadar, <addr-line>Zadar</addr-line></aff>
<aff id="aff7"><label>7</label>Odjel za zdravstvene studije, Sveu&#x010D;ili&#x0161;te u Zadru</aff>
<aff id="aff8"><label>8</label>Fakultet za dentalnu medicinu i zdravstvo Sveu&#x010D;ili&#x0161;ta Josipa Jurja Strossmayera u Osijeku</aff>
</contrib-group>
<author-notes>
<corresp id="cor1">Adresa za dopisivanje: Prof. dr. sc. Kata &#x0160;aki&#x0107; Zdrav&#x010D;evi&#x0107;, <ext-link ext-link-type="uri" xlink:href="https://orcid.org/0000-0001-5413-6382">https://orcid.org/0000-0001-5413-6382</ext-link> Fakultet za dentalnu medicinu i zdravstvo Sveu&#x010D;ili&#x0161;ta Josipa Jurja Strossmayera u Osijeku, Crkvena 2, 31000 Osijek; e-po&#x0161;ta: <email xlink:href="kszdravcevic@fdmz.hr">kszdravcevic@fdmz.hr</email></corresp></author-notes>
<pub-date pub-type="epub-ppub"><month>06</month><year>2020</year></pub-date>
<volume>142</volume>
<issue>5-6</issue>
<fpage>155</fpage>
<lpage>159</lpage>
<permissions>
<copyright-year>2020</copyright-year>
<copyright-holder>Croatian Medical Association</copyright-holder>
<license xlink:href="http://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>Farmakolo&#x0161;ko lije&#x010D;enje ostaje glavni terapijski pristup pri lije&#x010D;enju karcinomske boli, a mogu se integrirati i druge strategije tijekom trajanja i lije&#x010D;enja bolesti. Kontrola boli mo&#x017E;e se posti&#x0107;i s pomo&#x0107;u tehnika regionalne anestezije upotrebom trajno implantiranih katetera koji omogu&#x0107;uju prekidanje nociceptivnih putova odgovornih za transmisiju signala boli u sredi&#x0161;nji &#x017E;iv&#x010D;ani sustav. Postavljanje katetera za primjenu analgetika na razli&#x010D;itim mjestima u bolesnika s intraktabilnom neuropatskom karcinomskom boli omogu&#x0107;uje odgovaraju&#x0107;u analgeziju i treba biti predlo&#x017E;eno prije eventualne primjene destruktivnih tehnika. Cilj je rada prikaz lije&#x010D;enja karcinomske boli s pomo&#x0107;u regionalnih invazivnih tehnika.</p>
</abstract>
<trans-abstract xml:lang="en">
<title>SUMMARY</title>
<p>Pharmacological therapy is the mainstay of treating cancer pain, but other strategies can also be integrated during the course of the disease. Control of pain can be achieved by regional anesthesia techniques using chronically implanted catheters providing interruption of nociceptive pathways responsible for pain transmission to the central nervous system. Placing catheters at different sites for administration of analgesics in patients with intractable (neuropathic) cancer pain provides adequate pain relief and has to be proposed before considering more destructive techniques. The aim of this review article is cancer pain management by using regional invasive techniques.</p>
</trans-abstract>
<kwd-group kwd-group-type="author"><kwd>Deskriptori KARCINOMSKA BOL &#x2013; farmakoterapija</kwd><kwd>OPIOIDNI ANALGETICI &#x2013; ne&#x017E;eljeni u&#x010D;inci, terapijska uporaba</kwd><kwd>MORFIJ &#x2013; ne&#x017E;eljeni u&#x010D;inci, terapijska uporaba</kwd><kwd>LOKALNI ANESTETICI &#x2013; terapijska uporaba</kwd><kwd>EPIDURALNA ANALGEZIJA</kwd><kwd>NEPODNOSIVA BOL &#x2013; lije&#x010D;enje</kwd><kwd>VISCERALNA BOL &#x2013; etiologija, lije&#x010D;enje, BLOKADA &#x017D;IVCA</kwd><kwd>IMPLANTIRANI KATETERI</kwd><kwd>KORDOTOMIJA &#x2013; ne&#x017E;eljeni u&#x010D;inci</kwd><kwd>PALIJATIVNA SKRB &#x2013; metode</kwd></kwd-group>
<kwd-group kwd-group-type="translator" xml:lang="en"><title>Descriptors </title><kwd>CANCER PAIN &#x2013; drug therapy</kwd><kwd>ANALGESICS, OPIOID &#x2013; adverse effects, therapeutic use</kwd><kwd>MORPHINE &#x2013; adverse effects, therapeutic use</kwd><kwd>ANESTHETICS, LOCAL &#x2013; therapeutic use</kwd><kwd>ANALGESIA, EPIDURAL</kwd><kwd>PAIN, INTRACTABLE &#x2013; therapy</kwd><kwd>VISCERAL PAIN &#x2013; etiology, therapy</kwd><kwd>NERVE BLOCK</kwd><kwd>CATHETERS, INDWELLING</kwd><kwd>CORDOTOMY &#x2013; adverse effects</kwd><kwd>PALLIATIVE CARE &#x2013; methods</kwd></kwd-group>
</article-meta>
</front>
<body>
<p>Prema prognozama Svjetske zdravstvene organizacije (SZO), u 2021. godini diljem svijeta bit &#x0107;e registrirano 15 milijuna novooboljelih od karcinoma te oko 9 milijuna smrtnih ishoda zbog te pojave. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>) Bol trpi 30 &#x2013; 50% bolesnika s karcinomom, a njih 70 &#x2013; 90% s uznapredovalom karcinomskom bole&#x0161;&#x0107;u osje&#x0107;aju umjerenu do jaku bol. (<xref ref-type="bibr" rid="r2"><italic>2</italic></xref>, <xref ref-type="bibr" rid="r3"><italic>3</italic></xref>) Procjenjuje se da svake godine karcinomsku bol trpi oko 9 milijuna ljudi diljem svijeta, &#x0161;to je tako&#x0111;er velik zdravstveni problem. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>) Stoga je bol jedna od najstra&#x0161;nijih posljedica karcinoma, a lo&#x0161;a kontrola boli mo&#x017E;e znatno negativno utjecati na kvalitetu &#x017E;ivota. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) &#x0160;tovi&#x0161;e, bol je va&#x017E;an prediktor pre&#x017E;ivljenja, a neodgovaraju&#x0107;e lije&#x010D;ena, olak&#x0161;ava progresiju metastatske bolesti. (<xref ref-type="bibr" rid="r5"><italic>5</italic></xref>) Cilj je ovog rada prikaz lije&#x010D;enja karcinomske boli s pomo&#x0107;u regionalne invazivne procedure.</p>
<sec sec-type="other1">
<title>Spinalna analgezija</title>
<p>Cilj spinalne opioidne terapije jest potaknuti osloba&#x0111;anje boli primjenom niskih doza opioida u blizini opioidnih receptora smje&#x0161;tenih na dorzalnim rogovima kralje&#x017E;ni&#x010D;ne mo&#x017E;dine. (<xref ref-type="bibr" rid="r6"><italic>6</italic></xref>) Pritom se ukupna doza primijenjenih opioida mo&#x017E;e znatno sniziti, &#x0161;to smanjuje u&#x010D;estalost opioidnih nuspojava. No, spinalni opioidi ne omogu&#x0107;uju uvijek odgovaraju&#x0107;u analgeziju. Dodatak niskih doza lokalnih anestetika, naj&#x010D;e&#x0161;&#x0107;e bupivakaina, mo&#x017E;e biti korisno, poglavito u bolesnika s neuropatskom boli. (<xref ref-type="bibr" rid="r7"><italic>7</italic></xref>) Valja naglasiti da intratekalno primijenjeni lokalni anestetici mogu uzrokovati senzorna i motori&#x010D;ka o&#x0161;te&#x0107;enja, autonomnu disfunkciju i neurotoksi&#x010D;nost, iako se ove nuspojave rijetko doga&#x0111;aju kod primjene bupivakaina u dozama ni&#x017E;im od 45 mg/d. (<xref ref-type="bibr" rid="r8"><italic>8</italic></xref>) Izbor opioida za intratekalnu primjenu jest morfij, ponajprije zbog svojega hidrofilnog karaktera. U usporedbi s drugim opioidima intratekalno primijenjen morfij rezultira dugotrajnim osloba&#x0111;anjem boli, &#x010D;ak i na vi&#x0161;im dermatomima. Sufentanil je odgovaraju&#x0107;a alternativa u intolerantnih bolesnika s ne&#x017E;eljenim nuspojavama pri primjeni morfija jer se maksimalan u&#x010D;inak mo&#x017E;e posti&#x0107;i zahva&#x0107;anjem manjeg broja spinalnih opioidnih receptora. (<xref ref-type="bibr" rid="r9"><italic>9</italic></xref>) Petidin, opioid s lokalno anestetskim svojstvima, u&#x010D;inkovito se rabi za selektivnu spinalnu analgeziju u bolesnika s intraktabilnom karcinomskom boli s manje nuspojava poput mu&#x010D;nine, povra&#x0107;anja i svrbe&#x017E;a u usporedbi s morfijem. (<xref ref-type="bibr" rid="r10"><italic>10</italic></xref>) Ipak, dugotrajna primjena petidina mo&#x017E;e rezultirati akumulacijom norpetidina, glavnog metabolita petidina odgovornoga za ekscitaciju sredi&#x0161;njega &#x017E;iv&#x010D;anog sustava, posebice u bolesnika s bubre&#x017E;nom insuficijencijom jer je koncentracija norpetidina u plazmi ovisna o urinarnoj ekskreciji. U istra&#x017E;ivanju koje su proveli Jaffe i suradnici deset bolesnika s neuropatskom karcinomskom boli lije&#x010D;eno je trajnom intratekalnom primjenom meperidina. Koncentracija meperidina i normeperidina u plazmi mjerena je u svih bolesnika prvih dana nakon zapo&#x010D;etog lije&#x010D;enja. Visoka koncentracija meperidina u plazmi bila je zamije&#x0107;ena u samo tri bolesnika. U njih je i razina normeperidina bila povi&#x0161;ena, iako su koncentracije u plazmi bile ni&#x017E;e od razine prihva&#x0107;ene za indukciju toksi&#x010D;nosti sredi&#x0161;njega &#x017E;iv&#x010D;anog sustava (500 ng/mL). Osmero bolesnika bilo je zadovoljno analgezijom. Intratekalna primjena meperidina podrazumijeva se sekundarnom linijom opioidne terapije pri lije&#x010D;enju neuropatske karcinomske boli u bolesnika s jakim nuspojavama kod intratekalne primjene morfina. (<xref ref-type="bibr" rid="r10"><italic>10</italic></xref>)</p>
<p>Adjuvansi poput klonidina (&#x03B1;-2-agonist), neostigmina, lizin acetilsalicilata, analoga somatostatina, midazolama te ketamina tako&#x0111;er mogu biti primijenjeni intratekalno. Klonidin ima antinociceptivni u&#x010D;inak na spinalnu transmisiju signala boli. (<xref ref-type="bibr" rid="r11"><italic>11</italic></xref>) Primije&#x0107;en je tako&#x0111;er sinergisti&#x010D;ki u&#x010D;inak intratekalno primijenjenog klonidina i opioida u bolesnika s neuropatskom karcinomskom boli. U nekoliko nedavno objavljenih klini&#x010D;kih istra&#x017E;ivanja pri lije&#x010D;enju neuropatskoga bolnog sindroma preporu&#x010D;uje se sna&#x017E;na analgezija koja se posti&#x017E;e epiduralnom ili intratekalnom primjenom racemi&#x010D;nog ketamina. U prikazima bolesnika s jakom neuropatskom karcinomskom boli uspje&#x0161;no lije&#x010D;enje posti&#x017E;e se kontinuiranom intratekalnom infuzijom morfija, bupivakaina, klonidina i S(+)-ketamina. Tijekom paralelne primjene ketamina intratekalna doza morfija potrebna za kontrolu karcinomske boli mo&#x017E;e se sniziti zbog mogu&#x0107;e interakcije ketamina i morfija. (<xref ref-type="bibr" rid="r12"><italic>12</italic></xref>) Mehanizam djelovanja ketamina mo&#x017E;e biti bilo direktna antinocicepcija stimulacijom inhibicije spinalnih receptora N-metil-D-aspartata ili smanjenje razvoja tolerancije na morfij, koje time poja&#x010D;ava antinocicepciju morfijem na spinalnoj razini. Ipak, unato&#x010D; razmatranjima klini&#x010D;kih iskustava u literaturi se nailazi na prijepore s obzirom na sigurnost ketamina i njegova enantiomera S(+)-ketamina i za intratekalnu primjenu i za epiduralnu. U jednom od svojih prikaza postmortalnih histopatolo&#x0161;kih nalaza na kralje&#x017E;ni&#x010D;noj mo&#x017E;dini i korijenima &#x017E;ivaca u bolesnika s te&#x0161;kom neuropatskom karcinomskom boli koja je bila uspje&#x0161;no lije&#x010D;ena kontinuiranom intratekalnom infuzijom morfija, bupivakaina, klonidina i S(+)-ketamina Vranken je na&#x0161;ao te&#x0161;ke histolo&#x0161;ke abnormalnosti uklju&#x010D;uju&#x0107;i centralnu kromatolizu, propadanje u obliku smanjivanja &#x017E;iv&#x010D;anih stanica, neuronofagiju i poja&#x010D;anu mikroglijalnu aktivnost s gliozom. Prije klini&#x010D;ke upotrebe potrebni su testovi potencijalne neurotoksi&#x010D;nosti i sigurnosna istra&#x017E;ivanja bolusne ili kontinuirane intratekalne primjene S(+)-ketamina.</p>
<p>Iako spinalna analgezija mo&#x017E;e omogu&#x0107;iti zadovoljavaju&#x0107;u analgeziju u nekih bolesnika, ne&#x017E;eljeno nezadovoljstvo mo&#x017E;e biti i do 30%. (<xref ref-type="bibr" rid="r13"><italic>13</italic></xref>) Slab odgovor na spinalnu analgeziju mo&#x017E;e se o&#x010D;ekivati u bolesnika s epizodnim bolima pri pokretu, u onih s bolima kod ko&#x017E;nih ulceracija, pri neuropatskoj boli i boli povezanoj sa sna&#x017E;nim psiholo&#x0161;kim &#x010D;imbenikom. Komplikacije poput meningitisa zasigurno obeshrabruju davanje spinalne analgezije, &#x0161;to treba uvijek uzeti u obzir prije primjene ove tehnike.</p>
</sec>
<sec sec-type="other2">
<title>Kateteri perifernih &#x017E;ivaca u postupku lije&#x010D;enja karcinomske boli</title>
<p>Tumorska infiltracija ili kompresija tumora na periferne &#x017E;ivce ili pleksuse mo&#x017E;e uzrokovati te&#x0161;ku neuropatsku bol rezistentnu na farmakolo&#x0161;ko lije&#x010D;enje. Iako opioidi mogu tu bol smanjiti, poznato je da povi&#x0161;enje doze opioida mo&#x017E;e dovesti do neprihvatljivih ne&#x017E;eljenih doga&#x0111;aja poput sedacije, mu&#x010D;nine, povra&#x0107;anja, konstipacije i konfuzije s nedovoljnom analgezijom. U bolesnika s te&#x0161;kom boli bez odgovora na farmakolo&#x0161;ko lije&#x010D;enje mo&#x017E;e se poku&#x0161;ati s primjenom invazivne terapije boli. Perkutana cervikalna kordotomija indicira se u bolesnika s intraktabilnom boli, no ireverzibilni karakter te tehnike i pridru&#x017E;ene komplikacije motiviraju lije&#x010D;nika da iscrpi sve mogu&#x0107;e konzervativne metode. Prije primjene neuroablativnih postupaka u lije&#x010D;enju neuropatske boli preporu&#x010D;uje se razmotriti reverzibilne tehnike regionalne anestezije.</p>
<p>Tehnike kateterizacije perifernih &#x017E;ivaca valjana su alternativa u postupcima lije&#x010D;enja te&#x0161;ke boli zbog malignoma. Postavljanje katetera u podru&#x010D;ju brahijalnog pleksusa (interskalenskim, aksilarnim, infraklavikularnim i supraklavikularnim pristupom) ili u ovojnicu femoralnog i ishijadi&#x010D;nog &#x017E;ivca ve&#x0107; su prije opisivane metode, iako primarno u poslijeoperacijskoj analgeziji. (<xref ref-type="bibr" rid="r14"><italic>14</italic></xref>) Kateterske tehnike za blokove perifernih &#x017E;ivaca kod neuropatske karcinomske boli rijetke su. Dugotrajnija analgezija mo&#x017E;e biti kompromitirana komplikacijama koje se odnose na dislokaciju katetera, curenje i upalu na ulaznome mjestu katetera, a i lokalne anatomske razli&#x010D;itosti kao posljedica neoplasti&#x010D;ne bolesti mogu utjecati na sigurno postavljanje katetera. Kontinuirana primjena lokalnog anestetika s pomo&#x0107;u katetera uvedenog uzdu&#x017E; brahijalnog pleksusa mo&#x017E;e dovesti do znakovitog olak&#x0161;anja boli u bolesnika s rastom tumora u tom podru&#x010D;ju. U istra&#x017E;ivanju na &#x0161;est bolesnika s te&#x0161;kom neuropatskom boli zbog Pancoastova sindroma primjena kontinuiranog bloka brahijalnog pleksusa s aksilarnim kateterom pokazala je znakovito osloba&#x0111;anje od boli i pobolj&#x0161;anje kvalitete &#x017E;ivota. (<xref ref-type="bibr" rid="r15"><italic>15</italic></xref>, <xref ref-type="bibr" rid="r16"><italic>16</italic></xref>) Ipak, ako rast tumora u aksilarnom prostoru sprje&#x010D;ava postavljanje aksilarnog katetera, kateter mo&#x017E;e biti postavljen uzdu&#x017E; brahijalnog pleksusa na cervikalnoj razini primjenjuju&#x0107;i tada posteriorni pristup. (<xref ref-type="bibr" rid="r17"><italic>17</italic></xref>, <xref ref-type="bibr" rid="r18"><italic>18</italic></xref>)</p>
<p>Neuropatska bol u regiji lumbosakralnog pleksusa te&#x017E;e se lije&#x010D;i. Za razliku od brahijalnog pleksusa, lumbosakralni pleksus nije obavijen jednom fascijalnom ovojnicom, stoga postavljanje katetera uzdu&#x017E; lumbosakralnog pleksusa nije mogu&#x0107;e pa se opisuju druga&#x010D;ije tehnike koje se mogu primijeniti. (<xref ref-type="bibr" rid="r19"><italic>19</italic></xref>, <xref ref-type="bibr" rid="r20"><italic>20</italic></xref>) Bolesnicima s neuropatskom boli zbog maligne infiltracije mi&#x0161;i&#x0107;a psoasa i lumbalnog pleksusa kateterska primjena lokalnog anestetika kroz fasciju m. psoas omogu&#x0107;uje u&#x010D;inkovitu analgeziju. (<xref ref-type="bibr" rid="r21"><italic>21</italic></xref>) Kod bolesnika s radikulopatijom zbog tumorske infiltracije, kompresije ili o&#x0161;te&#x0107;enja jednog &#x017E;ivca analgezija mo&#x017E;e biti postignuta primjenom lokalnog anestetika preko katetera postavljenoga uzdu&#x017E; korijena &#x017E;ivca. Va&#x017E;no je naglasiti da blokada samo jednog &#x017E;ivca mo&#x017E;e dovesti do nezadovoljavaju&#x0107;e analgezije ako bolno podru&#x010D;je inervira vi&#x0161;e &#x017E;ivaca. U takvih bolesnika karcinomska bol mo&#x017E;e biti dobro kontrolirana intratekalnom primjenom samo morfija ili kombinacije morfija s lokalnim anestetikom. Tako&#x0111;er se mo&#x017E;e kombinirati i primjena lokalnoga anestetika s drugim adjuvansima poput klonidina ili midazolama. Kontinuirana primjena lokalnog anestetika uzdu&#x017E; perifernih &#x017E;ivaca mo&#x017E;e biti u&#x010D;inkovita metoda u lije&#x010D;enju jake neuropatske karcinomske boli.</p>
</sec>
<sec sec-type="other3">
<title>Neuroliti&#x010D;ki blokovi pri lije&#x010D;enju visceralne karcinomske boli</title>
<p>Visceralna bol uzrokovana abdominalnim malignim tumorima ponajprije se lije&#x010D;i nesteroidnim protuupalnim lijekovima i opioidima. Opisane su stoga razli&#x010D;ite neuroliti&#x010D;ke blokade za pobolj&#x0161;anje palijativnog lije&#x010D;enja karcinoma abdominalnih organa. Provo&#x0111;enje neuroliti&#x010D;kih blokada u&#x010D;inkovito je u kontroli visceralnih bolnih sindroma. No, budu&#x0107;i da ti pacijenti &#x010D;esto osje&#x0107;aju koegzistiraju&#x0107;u somatsku i neuropatsku bol koja se ne smanjuje samo neuroliti&#x010D;kom blokadom, trajna farmakolo&#x0161;ka terapija ipak mo&#x017E;e biti potrebna. Premda se razli&#x010D;ite komponente boli (somatska, visceralna ili neuropatska) te&#x0161;ko razlikuju u bolesnika koji trpe sna&#x017E;nu uznapredovalu bol, smanjenjem visceralne komponente blok mo&#x017E;e ipak ubla&#x017E;iti bol, smanjiti potrebe za analgeticima i opioidima, kao i njihove ne&#x017E;eljene nuspojave. (<xref ref-type="bibr" rid="r22"><italic>22</italic></xref>) Opisani su razli&#x010D;iti pristupi u postizanju neurolize uklju&#x010D;uju&#x0107;i interpleuralni fenolni blok, blok pleksusa celijakusa, blok inferiornoga mezenterijskoga ganglija, superiorni hipogastri&#x010D;ni blok te blok ganglija impara.</p>
<p>Interpleuralni fenolni blok mo&#x017E;e biti u&#x010D;inkovit pri smanjenju visceralne boli kod karcinoma jednjaka. Indikacija za superiorni hipogastri&#x010D;ni blok jest intraktabilna bol u zdjelici kao posljedica neoplasti&#x010D;nih bolesti (ginekolo&#x0161;ki, kolorektalni ili genitourinarni karcinomi). U jednog je pacijenta kao alternativa za blok superiornoga hipogastri&#x010D;nog pleksusa opisan kontinuirani blok inferiornoga mezenterijskoga ganglija, povezan sa superiornim hipogastri&#x010D;nim pleksusom, a za kontrolu visceralne boli iz distalnog kolona. Blokada ganglija impara uvedena je za lije&#x010D;enje intraktabilne neoplasti&#x010D;ne perinealne boli simpati&#x010D;kog izvora. Iako ove tehnike obe&#x0107;avaju, potrebno je vi&#x0161;e iskustva za potvr&#x0111;ivanje sigurnosti i u&#x010D;inkovitosti tih pristupa pri lije&#x010D;enju karcinomske boli. Neuroliti&#x010D;ki blok pleksusa celijakusa (NBPC) naj&#x010D;e&#x0161;&#x0107;e se upotrebljava za kontrolu boli kod karcinoma gu&#x0161;tera&#x010D;e. NBPC ima kratki analgetski u&#x010D;inak u 85% bolesnika, a sama kateterska tehnika s primjenom neuroliti&#x010D;kih lijekova ili lokalnih anestetika uklanja karcinomsku bol u gu&#x0161;tera&#x010D;i do bolesnikove smrti u njih 10 &#x2013; 24%, s boljom kvalitetom &#x017E;ivota tijekom lije&#x010D;enja. (<xref ref-type="bibr" rid="r23"><italic>23</italic></xref>, <xref ref-type="bibr" rid="r24"><italic>24</italic></xref>) Ograni&#x010D;enja ovih tehnika jasna su, jer progresijom tumorske infiltracije i &#x0161;irenjem rasadnica (metastaza) pankreati&#x010D;na karcinomska bol postaje multifaktorska, a u obzir se moraju uzeti i razli&#x010D;iti mehanizmi i putovi boli (somatski, neuropatski) koji su druga&#x010D;iji od visceralnih. (<xref ref-type="bibr" rid="r25"><italic>25</italic></xref>, <xref ref-type="bibr" rid="r26"><italic>26</italic></xref>) Blok pleksusa celijakusa u&#x010D;inkovit je samo u lije&#x010D;enju visceralne karcinomske boli pa stoga treba razmotriti dodatnu farmakolo&#x0161;ku terapiju. NBPC s alkoholom mo&#x017E;e dovesti do nepotpunog uni&#x0161;tavanja neuronalnih struktura celijakalne osi. (<xref ref-type="bibr" rid="r24"><italic>24</italic></xref>) Intermitentna kateterska primjena bupivakaina omogu&#x0107;uje zadovoljavaju&#x0107;u analgeziju. (<xref ref-type="bibr" rid="r26"><italic>26</italic></xref>)</p>
</sec>
<sec sec-type="other4">
<title>Neurodestruktivne procedure</title>
<p>Perkutana cervikalna kordotomija kralje&#x017E;ni&#x010D;ne mo&#x017E;dine na razini C1 do C2 mo&#x017E;e biti uspje&#x0161;na blokada. Pouzdana je za lije&#x010D;enje unilateralne boli ispod razine C5. Vi&#x0161;e od 80% bolesnika ima optimalnu analgeziju od unilateralne boli. Valja ju primjenjivati kod bolesnika u terminalnom stadiju bolesti s o&#x010D;ekivanim pre&#x017E;ivljenjem kra&#x0107;im od 12 mjeseci jer se u 40% pacijenata bol vra&#x0107;a u roku od jedne godine. Pritom se moraju uzeti u obzir komplikacije i permanentne nuspojave poput Bernard-Hornerova sindroma (100%), retencije urina (6,5%), hemipareze (8,1%) te boli zrcalne slike (6,5%). Bilateralna perkutana kordotomija, zbog isprepletanja sa spinoretikularnim vlaknima, mo&#x017E;e dovesti do sindroma apneje u snu ili sredi&#x0161;njega hipoventilacijskog sindroma. (<xref ref-type="bibr" rid="r27"><italic>27</italic></xref>) Uloga drugih tehnika poput dorzalne rizotomije, skalenotomije, spinotalami&#x010D;ke traktotomije, mijelotomije, cingulotomije i subarahnoidalne instilacije fenola ili alkohola u postupku lije&#x010D;enja karcinomske boli nije jo&#x0161; dovoljno jasna, a prate ih i mnoge poznate komplikacije.</p>
<p>Sve invazivne procedure u lije&#x010D;enju boli moraju se izvoditi jednakim sigurnosnim postupcima kao &#x0161;to se izvode kirur&#x0161;ke procedure. Prije izvo&#x0111;enja procedure bolesnik mora dobiti pouzdane informacije u okviru procesa dobivanja pristanka informiranog bolesnika, uz odgovaraju&#x0107;e mjere opreza koje &#x0107;e biti poduzete pri lije&#x010D;enju bolesnika s poreme&#x0107;ajem koagulacije. (<xref ref-type="bibr" rid="r28"><italic>28</italic></xref>) Valja uzeti u obzir sigurnosnu uporabu neurostimulatora, ultrazvuka te odgovaraju&#x0107;ih igala i lijekova, a &#x0161;trcaljke s lijekovima moraju biti obilje&#x017E;ene. Poslije injekcije bilo kojega lokalnog anestetika u odgovaraju&#x0107;em se intervalu, ovisno o bloku, moraju nadzirati vitalne funkcije i simptomi bolesnika. Ako se upotrijebi kateterska infuzija bilo kojega lokalnog anestetika, ona mora biti to&#x010D;no ozna&#x010D;ena, a njezino uklanjanje kontrolirano tijekom 48 &#x2013; 72 sata. Ovo se ne primjenjuje pri dugotrajnim kateterima. Poslije procedure bolesnik mora biti nadziran odgovaraju&#x0107;e vrijeme i dobiti relevantne informacije uklju&#x010D;uju&#x0107;i rizike od prolongiranog djelovanja motori&#x010D;kog i osjetnog bloka. Ukoliko tijekom primjene ovih postupaka do&#x0111;e do nastanka bilo koje komplikacije ili o&#x0161;te&#x0107;enja &#x017E;ivaca vrlo je va&#x017E;no pridr&#x017E;avati se jasnih protokola uklju&#x010D;uju&#x0107;i neurolo&#x0161;ki nadzor do razrje&#x0161;enja ili stabilizacije novonastaloga stanja. (<xref ref-type="bibr" rid="r29"><italic>29</italic></xref>)</p>
</sec>
<sec sec-type="other5">
<title>Zaklju&#x010D;ak</title>
<p>Osloba&#x0111;anje od boli u ve&#x0107;ine se bolesnika posti&#x017E;e primjenom preporuka SZO-a. Upotreba trajno postavljenih katetera na razli&#x010D;itim mjestima za primjenu analgetika u bolesnika s intraktabilnom neuropatskom karcinomskom boli omogu&#x0107;uje odgovaraju&#x0107;u analgeziju u tim situacijama i treba biti predlo&#x017E;ena prije eventualne primjene destruktivnih tehnika poput perkutane cervikalne kordotomija.</p>
</sec>
</body>
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