Nyukliya Perfusion Kuedzwa kweMwoyo
Zvimwe zvidzidzo zvisingasviki zvinoshandiswa pakuongorora kwechironiary artery chirwere (CAD) . Pakati pezvinonyanya kukosha maitiro epfungwa anoitwa ne thallium kana Cardiolyte.
Thallium-201 uye technetium-99m sestamibi (Cardiolyte) zvinhu zviviri zvinonzi radioactive zvinoshandiswa mukuedzwa, zvinonzi "nuclear nyuzidzo zvidzidzo," izvo zvinotarisa mabheji mu coronary arteries.
Nokupinza thallium kana Cardiolyte muropa, kazhinji panguva yemuedzo wepfungwa, mufananidzo wemoyo unogona kuitwa unoratidza kuti ropa rinotenderera sei kumativi akasiyana emuviri wemwoyo. Kana chironga chegoni chinenge chichidzivirirwa zvachose kana chakavharidzirwa zvachose nekuda kweCAD, musuru uripo unopiwa nehutano hwehutano huchaonekwa pamusoro pechifananidzo sechivara chine rima - nzvimbo yakaderedzwa kana kusipo ropa.
Ndezvipi Thallium uye Sestamibi?
Thallium uye Cardiolite vane radioactive zvinhu izvo zvakashandiswa kwemakore mazhinji mumagariro ekufungidzira kwemoyo. Apo inorowa muropa, zvinhu izvi zvinonamatira kune mamwe marudzi emasero, kusanganisira moyo wemasero masero. Ikamera yakakosha yemamera inoona hutachiona hwemhepo inogona kushandiswa kuita mufananidzo wemutsipa wemwoyo wakaunganidza thallium kana Cardiolyte.
Zvisinei, thallium uye Cardiolyte vanobatanidza chete kune zvikamu zvemuviri wemutsipa une ropa rakanaka.
Kana imwe yemakironi inonzi coronary yakavharwa kana zvishoma yakadziviswa, zvishoma nezvishoma radioactivity inosvika musumbu inowanikwa neiyo yakavhara arteri.
Nuclear Perfusion Studies Inoitwa Sei?
Munguva yekuedzwa kwepfungwa, thallium kana kuti Cardiolite inopindwa muvheji kusvika pakurevedza muviri.
Izvozvo zvinokonzerwa nemasasa zvinozviparadzira pachedu mumoyo wemisumbu, zvichienderana neropa rinopera rakagamuchirwa nemusumbu iwoyo. Mumuviri wemumumuviri unowana ruzivo rwekuyerera kweropa unowedzera huwandu hwakawanda hwethallium / Cardiolite kupfuura mutsara wemwoyo unodziviswa neatrosclerotic plaque .
Thallium / Cardiolyte kuedza kunogona kushandiswawo nevarwere vanoda kuongororwa asi vasingakwanisi kushandisa. Mune zviitiko izvi, adenosine inorohwa muvhein kuti ifananidze maitiro. (Adenosine inokonzera ropa richiyerera kuti iparidzire mumutsipa wemumuviri nenzira yakangofanana neyokudzidzira - nzvimbo dzine rutivi rwekuvhara zvishoma zvinogona kugadziriswa ropa shoma kudarika kwemaminitsi mashomanana mushure mokunge adenosine injection.)
Chifananidzo chemwoyo chichabva chaitwa nekhamera iyo inogona "kuona" radioactivity inotumirwa ne thallium / Cardiolite. Kubva pamifananidzo iyi, chero zvikamu zvemoyo zvisingagamuchiri kubuda kweropa (nekuda kwekuvhara mumaroto emakoronary) zvinogona kuonekwa se "nzvimbo dzerima."
Ndeipi Nuclear Perfusion Studies Zvakanaka Kwazvo?
Kushandisa thallium kana kuti Cardiolite perfusion imaging kunowedzera kukwana kwepfungwa yekudzvinyirira pakuongorora kubvisa kweCAD. A normal thallium / Cardiolite test ndiyo chiratidzo chinonyatsoratidza kuti hapana mavharokiti anokosha mumaketari e coronary.
Ukuwo rumwe rutivi, varwere vane maitiro asinganzwisisiki ekugadzirwa kwepamusoro vanonyanya kunge vane ruzivo rwakakura.
Nyanzvi yekunyanyisa kwekireya yenyukireya inoshandiswa mumitatu mitatu yakawanda. Kutanga, iyo inobatsira kune varwere vanofungidzirwa kuti vanochengetedza angina nekuda kwekugadziriswa kwemapurisa mumakorotori e coronary.
Chechipiri, zvidzidzo izvi zvinoshandiswa kune varwere vakamborapwa mishonga (kureva kuti, kwete-invasively) yeinina isina kudzikama kana isina-ST-segment myocardial infarction (NSTEMI) , uye avo vakaonekwa kuti vakadzikama. Kana thallium yavo / Cardiolyte zviratidzo zvisati zvaratidza kumira kwemashoko makuru, zvinenge zvakachengeteka kuti zvirambe dzichirapa kurapwa chete.
Kana zvisina kudaro, inofanira kutaridzirwa nokuda kweiiioplasty uye inopisa , kana kuti kuburikidza nekuvhiyiwa .
Chechitatu, zvidzidzo izvi zvinoshandiswa kuongorora kubata kwemitsipa yemwoyo kudarika kuvhara kwakanyanya mumatriconary artery. Kana musikana wemwoyo "unovhenekera" chero upi zvawo ne thallium / Cardiolyte, zvino zvichiri kushandiswa zvinobudirira - uye kunyorera kana kupfutidza ariti kunogona kutarisirwa kuvandudza kushanda kwemwoyo. Kana zvisina kudaro, chirongwa che revascularization chaisazotarisirwa kugovera zvikomborero zvakawanda.
Ndeipi Dambudziko reNuclear Perfusion Scans?
Izvi zvidzidzo zvisingagoneki zvakachengeteka. Chinhu chavo choga chinokanganisa ndechekuti shoma shoma rinoshandiswa. Kuyera kwemazuva ano murwere anogamuchirwa kunonzwika kuti anongogadzirisa ngozi shomanana chete yekukuvadza, uye kune varwere vakasarudzwa zvakakosha iyo inogona kubatsirwa inopfuura yakanyanya dambudziko iri duku.
Sources:
Anderson J, Adams C, Antman E, et al. ACC / AHA 2007 mazano ekutungamira kwevarwere vane vasinganetseki angina / vasina-ST-elevation myocardial infarction: mushumo weAmerican College of Cardiology / American Heart Association Task Force pamitungamiri yekuita maitiro (Komiti Yokunyora kugadzirisa Mitemo ye2002 yeHurumende yevarwere nevasina kutendeka Angina / Kwete-ST-Elevation Myocardial Infarction): yakagadzirwa pamwe nekuAmerican College of Emergency Physicians, American College kana Physicians, Society for Academic Emergency Medicine, Society for Cardiovascular Angiography and Interventions, uye Society of Thoracic Surgeons. J Am Coll Cardiol 2007; 50: e1
Allman KC, Shaw LJ, Hachamovitch R, Udelson JE. Myocardial viability test uye zvinokonzerwa ne revascularization pakufananidzira kune varwere vane chirwere chetachiona chechirwere uye vakasiya ventricular kudzvinyirira: meta-analysis. J Am Coll Cardiol 2002; 39: 1151.