Ukungenisa umoya kwempumlo / ukuskena nge perfusion

Uvavanyo lwepemonary ventilation / perfusion scan lubandakanya iimvavanyo ezimbini zokuvavanywa kokuphefumla (ukungenisa umoya) nokusasaza (ukuthambisa) kuzo zonke iindawo zemiphunga.

Ukungenisa umoya kwimiphungeni / ukuskena nge-perfusion sisiphumo seemvavanyo ezimbini. Zingenziwa ngokwahlukeneyo okanye ngokudibeneyo.

Ngexesha lokuvavanywa kwe-perfusion, umboneleli wokhathalelo lwempilo utofa i-albhamuin ye-radioactive emthanjeni wakho. Ubekwe kwitafile eshukumayo ephantsi kwengalo yeskena. Lo matshini uskena imiphunga yakho njengoko igazi libaleka kuwo ukuze lifumane indawo yamasuntswana asebenzisa iiradioactive.

Ngexesha lokuvavanywa komoya ophefumlayo, uphefumla irhasi eqhumayo ngemaski uhleli okanye ulele etafileni phantsi kwengalo yeskena.

Awudingi ukuyeka ukutya (ngokukhawuleza), kukutya okhethekileyo, okanye uthathe naliphi na iyeza phambi kovavanyo.

I-x-ray yesifuba ihlala isenziwa ngaphambi okanye emva kokungenisa umoya kunye nokuskena i-perfusion.

Unxiba ilokhwe yasesibhedlele okanye impahla entofontofo engenazo izinto zokubopha zentsimbi.

Itafile inokuziva inzima okanye ibanda. Unokuziva ubukhali xa i-IV ibekwe emthanjeni engalweni yakho ngenxalenye ye-perfusion yenxalenye yokuskena.

Imaski esetyenziswe ngexesha lokuvavanywa komoya kungenza uzive usoyika malunga nokuba kwindawo encinci (i-claustrophobia). Kufuneka uxoke ulele ngexesha lokuskena.

Inaliti ye-radioisotope ihlala ingabangeli ukungathandeki.

Iskena sokungenisa umoya sisetyenziselwa ukubona ukuba uhamba njani umoya kwaye igazi lihamba ngemiphunga. Ukusetyenziswa kwe-perfusion scan kumanyathelo okunikezelwa kwegazi ngemiphunga.

Uvavanyo lokungenisa umoya kunye ne-perfusion luhlala lusenziwa ukufumana i-pulmonary embolus (igazi elixineneyo emiphungeni). Isetyenziselwa:

• Khangela ukujikeleza okungaqhelekanga (shunts) kwimithambo yegazi yemiphunga (imithambo yemiphunga)
• Uvavanyo lwengingqi (imimandla eyahlukeneyo yemiphunga) ukusebenza kwemiphunga kubantu abanezifo zemiphunga eziphambili, ezinje ngeCOPD

Umboneleli kufuneka athathe umoya wokungenisa umoya kunye nokuvavanywa kwe-perfusion emva koko awuvavanye ngesifuba i-x-ray. Onke amalungu emiphunga omabini kufuneka ayithathe ngokulinganayo iradioisotope.

Ukuba imiphunga ithatha amaqondo asezantsi kunesiqhelo eradioosotope ngexesha lokungenisa umoya okanye ukuskena nge-perfusion, inokwenzeka ngenxa yezi zinto zilandelayo:

• Ukuphazamiseka komoya
• Isifo esinganyangekiyo semiphunga (COPD)
• Ukukrala kwemiphunga
• Ukunciphisa i-pulmonary artery
• I-pneumonitis (ukudumba kwemiphunga ngenxa yokuphefumla kwinto yangaphandle)
• Ukudibanisa iipulmonary
• Ukuphefumla okuphukileyo kunye namandla okuphuphuma umoya

Iingozi ziphantse zafana nee-ray-ray (i-radiation) kunye neenaliti.

Akukho radiation ikhutshwa kwiskena. Endaweni yoko, ifumana imitha kwaye iyiguqule ibe ngumfanekiso.

Kukho ukubonakaliswa okuncinci kwimitha evela kwirediyo. Iiradiyo zeradiyo ezisetyenzisiweyo ngexesha lokuskena zihlala ixesha elifutshane. Yonke imitha yelanga ishiya umzimba kwiintsuku nje ezimbalwa. Nangona kunjalo, njengako nakuphi na ukubonakaliswa kwemitha, ulumkiso luyacetyiswa kwabasetyhini abakhulelweyo okanye abancancisayo.

Kukho umngcipheko omncinci wosulelo okanye ukopha kwindawo apho inaliti ifakwe khona. Umngcipheko wokuskena nge-perfusion kufana nokufaka inaliti efakwa ngaphakathi kuyo nayiphi na injongo.

Kwiimeko ezinqabileyo, umntu unokuhlakulela i-radioisotope. Oku kunokubandakanya ukusabela okungathandabuzekiyo kwe-anaphylactic.

Ukungena komoya ngemiphunga kunye nokufakwa kwe-perfusion scan kunokuba yenye yeendlela ezinobungozi obuncinci kwi-angiography ye-pulmonary yokuvavanya ukuphazamiseka kokunikezelwa kwegazi lomphunga.

Olu vavanyo alunakho ukubonelela ngoxilongo oluchanekileyo, ngakumbi kubantu abanesifo semiphunga. Olunye uvavanyo lunokufuneka ukuze kuqinisekiswe okanye kuthintelwe iziphumo zokungenisa umoya kwempompo kunye nokuskena i-perfusion.

Olu vavanyo luthathe indawo ye-CT pulmonary angiography yokufumanisa isifo se-pulmonary embolism. Nangona kunjalo, abantu abaneengxaki zezintso okanye i-allergies ekuchaseni idayi banokufumana olu vavanyo ngokukhuselekileyo.

V / Q ukuskena; Umoya womoya / scan perfusion; Ukungenisa umoya emiphungeni / ukuskena nge-perfusion; I-pulmonary embolism-V / Q ukuskena; Ukuvavanywa kwe-PE- V / Q; Igazi lehlwili-V / Q ukuskena

• Inaliti yealbhamu

IChernecky CC, iBerger BJ. Iskena semiphunga, ukuthambisa kunye nokungenisa umoya (V / Q scan) -ukuxilonga. Ku: IChernecky CC, iBerger BJ, ii-eds. Iimvavanyo zaselebhu kunye neenkqubo zokuqonda isifo. Umhla wesi-6. ISt Louis, MO: Elsevier Saunders; Ngo-2013: 738-740.

IGoldhaber SZ. Ukudibanisa iipulmonary. Ku: Zipes DP, Libby P, Bonow RO, Mann, DL, Tomaselli GF, Braunwald E, ii-eds. Isifo sentliziyo seBraunwald: Incwadi yesifundo seMpilo yeNtliziyo. Ngomhla we-11. IPhiladelphia, PA: Elsevier; 2019: isahl. 84.

Hering W. amayeza enyukliya: ukuqonda imigaqo kunye nokuqonda iziseko. Ku: Hering W, ed. Ukufunda iRadiology: Ukuqonda iziseko. Ngomhla we-4. IPhiladelphia, PA: Elsevier; Ngo-2020: e24-e42.