Iskena sokungenisa umoya / samandla we-pulmonary

I-pulmonary ventilation / perfusion scan ifaka phakathi izivivinyo ezimbili zokuhlola i-nuclear ukukala ukuphefumula (ukupholisa umoya) nokusakazwa kwegazi kuzo zonke izindawo zamaphaphu.

I-pulmonary ventilation / i-perfusion scan empeleni izivivinyo ezi-2. Kungenzeka kwenziwe ngokwehlukana noma ndawonye.

Ngesikhathi sokuskena kwe-perfusion, umhlinzeki wezokunakekelwa kwempilo ujove i-albhamuin enemisebe emthanjeni wakho. Ubekwa etafuleni eligudlukayo elingaphansi kwengalo yeskena. Umshini uskena amaphaphu akho njengoba igazi ligeleza kuwo ukuthola indawo yezinhlayiya ezinemisebe.

Ngesikhathi sokuhlolwa komoya, uphefumula igesi enemisebe ngemaski ngenkathi uhleli noma ulele etafuleni ngaphansi kwengalo yesithwebuli.

Awudingi ukuyeka ukudla (ngokushesha), udle ukudla okukhethekile, noma uthathe noma yimiphi imithi ngaphambi kokuhlolwa.

I-x-ray yesifuba ivame ukwenziwa ngaphambi noma ngemuva kokuhlolwa kokungeniswa komoya kanye ne-perfusion.

Ugqoka ingubo yasesibhedlela noma okokugqoka okunethezeka okungenazo izinto zokubopha zensimbi.

Itafula lingazizwa linzima noma libanda. Ungase uzwe ukubhoboza okubukhali lapho i-IV ibekwa emthanjeni engalweni yakho ngengxenye ye-perfusion yeskena.

Isifihla-buso esisetshenziswe ngesikhathi sokuhlolwa komoya kungenza uzizwe unovalo ngokuba sendaweni encane (i-claustrophobia). Kufanele ulale unganyakazi ngesikhathi sokuskena.

Umjovo we-radioisotope ngokuvamile awubangeli ukungakhululeki.

Ukuskena komoya kusetshenziselwa ukubona ukuthi umoya uhamba kanjani negazi ligeleza emaphashini. I-perfusion scan ilinganisa ukunikezwa kwegazi ngamaphaphu.

Iskena sokungenisa umoya kanye nesithambisi esivame ukwenziwa ukuthola i-pulmonary embolus (ihlule legazi emaphashini). Ibuye isetshenziselwe uku:

• Thola ukusakazwa okungavamile (ama-shunts) emithanjeni yegazi yamaphaphu (imithambo yamaphaphu)
• Ukuhlolwa kwesifunda (izindawo ezahlukahlukene zamaphaphu) ukusebenza kwamaphaphu kubantu abanezifo ezithuthukile zamaphaphu, njengeCOPD

Umhlinzeki kufanele athathe i-ventilation kanye ne-perfusion scan bese eyihlola nge-x-ray yesifuba. Zonke izingxenye zamaphaphu womabili kufanele zithathe i-radioisotope ngokulinganayo.

Uma amaphaphu ethatha amanani aphansi kunamanani ejwayelekile e-radioisotope ngesikhathi sokushaywa komoya noma i-perfusion scan, kungahle kube ngenxa yokunye kwalokhu okulandelayo:

• Ukuvinjelwa komoya
• Isifo esingapheliyo se-pulmonary disease (COPD)
• Inyumoniya
• Ukuncipha komthambo wamaphaphu
• I-pneumonitis (ukuvuvukala kwamaphaphu ngenxa yokuphefumula ngento yangaphandle)
• Umbungu wamaphaphu
• Ukwehlisa amandla okuphefumula nawomoya omncane

Izingozi zicishe zifane nezama-x-ray (imisebe) kanye nezinaliti.

Ayikho imisebe ekhishwa kuskena. Esikhundleni salokho, ithola imisebe bese iyiguqula ibe isithombe.

Kukhona ukuvezwa okuncane emisebeni evela kwi-radioisotope. Ama-radioisotopes asetshenziswa ngesikhathi sokuskena ahlala isikhashana. Yonke imisebe ishiya umzimba ezinsukwini ezimbalwa. Kodwa-ke, njenganoma ikuphi ukuvezwa ngemisebe, ukwelulekwa kuyalulekwa kwabesifazane abakhulelwe noma abancelisayo.

Kunobungozi obuncane bokutheleleka noma ukopha esizeni lapho kufakwa khona inaliti. Ubungozi bokufakwa kwe-perfusion kufana nokufaka inaliti efakwa ngaphakathi kunoma iyiphi enye injongo.

Ezimweni ezingavamile, umuntu angaqala ukungezwani komzimba ne-radioisotope. Lokhu kungafaka ukusabela okungathi sína kwe-anaphylactic.

Ukuphefumula kwe-pulmonary kanye ne-perfusion scan kungaba yindlela enobungozi obuphansi kune-angiography ye-pulmonary yokuhlola ukuphazamiseka kokunikezwa kwegazi kwamaphaphu.

Lokhu kuhlolwa kungenzeka kunganikeli ukuxilongwa okuqondile, ikakhulukazi kubantu abanesifo samaphaphu. Olunye uvivinyo lungadingeka ukuze kuqinisekiswe noma kukhishwe lokho okutholakele nge-pulmonary ventilation kanye ne-perfusion scan.

Lokhu kuhlolwa kuthathelwe indawo kakhulu yi-CT pulmonary angiography yokuxilonga i-pulmonary embolism. Kodwa-ke, abantu abanezinkinga zezinso noma ukungezwani komzimba nokuqhathanisa udayi bangaba nalokhu kuhlolwa ngokuphepha.

Ukuskena kwe-V / Q; Ukuphefumula / ukuskena nge-perfusion; Isikena sokungenisa umoya / ukuskena ngamaphaphu; I-embolism ye-pulmonary - ukuskena kwe-V / Q; Ukuskena kwe-PE- V / Q; Ukuqina kwegazi - V / Q scan

• Umjovo we-albhamuin

IChernecky CC, iBerger BJ. Ukuskena kwamaphaphu, ukumuncwa komoya kanye nomoya omncane (i-V / Q scan) - ukuxilonga. Ku: IChernecky CC, iBerger BJ, ama-eds. Ukuhlolwa Kwelabhoratri Nezinqubo Zokuxilonga. Umhlaka 6. ISt Louis, MO: Elsevier Saunders; 2013: 738-740.

IGoldhaber SZ. I-embolism yamaphaphu. Ku: Zipes DP, Libby P, Bonow RO, Mann, DL, Tomaselli GF, Braunwald E, ama-eds. Isifo Senhliziyo SikaBraunwald: Incwadi Yemithi Yezinhliziyo Nemithambo. Umhla ka-11. IPhiladelphia, PA: Elsevier; 2019: isahluko 84.

UHering W. Umuthi wenuzi: ukuqonda imigomo nokubona izisekelo. Ku: Herring W, ed. Ukufunda i-Radiology: Ukuqaphela izisekelo. Umhla wesi-4. IPhiladelphia, PA: Elsevier; 2020: e24-e42.