I-cardiac ye-intravascular ultrasound

I-intravascular ultrasound (IVUS) luvavanyo lokuqonda isifo. Olu vavanyo lusebenzisa amaza esandi ukubona ngaphakathi kwimithambo yegazi. Iluncedo ekuvavanyeni imithambo yegazi ebonelela ngentliziyo.

I-wand encinci ye-ultrasound ifakwe kwi-tube ephezulu. Le ityhubhu ibizwa ngokuba yi-catheter. I-catheter ifakwe kumthambo kwindawo yakho ye-groin kwaye inyukele entliziyweni. Yahlukile kwi-duplex ultrasound eqhelekileyo. I-duplex ultrasound yenziwe ngaphandle komzimba wakho ngokubeka i-transducer eluswini.

Ikhompyuter ilinganisa indlela amaza esandi abonakalisa ngayo imithambo yegazi, kwaye itshintsha amaza esandi abe yimifanekiso. IVUS inika umboneleli wezempilo inkangeleko kwimithambo yegazi yakho evela ngaphakathi nangaphandle.

IVUS ihlala isenziwa ngexesha lenkqubo. Izizathu zokuba kutheni kunokwenziwa zibandakanya:

• Ukufumana ulwazi malunga nentliziyo okanye imithambo yegazi okanye ukufumanisa ukuba ufuna utyando lwentliziyo
• Ukunyanga ezinye iintlobo zeemeko zentliziyo

I-Angiography inika ukujonga ngokubanzi kwimithambo yegazi. Nangona kunjalo, ayinakubonisa iindonga zemithambo. Imifanekiso ye-IVUS ibonisa iindonga zemithambo kwaye inokutyhila i-cholesterol kunye neefosithi (iipleyiti). Ukwakhiwa kwezi dipozithi kunokunyusa umngcipheko wokuhlaselwa sisifo sentliziyo.

IVUS incede ababoneleli ukuba baqonde ukuba i-stents ivalwa njani. Oku kubizwa ngokuba yi-stent restenosis.

IVUS iqhele ukwenziwa ukuqinisekisa ukuba i-stent ibekwe ngokuchanekileyo ngexesha le-angioplasty. Kananjalo kunokwenziwa ukumisela ukuba kufuneka kubekwe phi i-stent.

IVUS inokusetyenziselwa:

• Jonga i-aorta kunye nolwakhiwo lweendonga zomthambo, ezinokubonisa ukwakhiwa kweplate
• Fumana ukuba leliphi na igazi elichaphazelekayo kwi-aortic dissection

Kukho umngcipheko omncinci wobunzima be-angioplasty kunye ne-catheterization yentliziyo. Nangona kunjalo, iimvavanyo zikhuselekile xa zisenziwa liqela elinamava. IVUS yongeza umngcipheko omncinci ongezelelweyo.

Umngcipheko we-anesthesia kunye notyando ngokubanzi zezi:

• Impendulo kumayeza
• Iingxaki zokuphefumla
• Ukopha, amahlwili egazi
• Usulelo

Eminye imingcipheko ibandakanya:

• Ukonakala kwivelufa yentliziyo okanye umthambo wegazi
• Ukuhlaselwa yintliziyo
• Ukubetha kwentliziyo ngokungaqhelekanga (arrhythmia)
• Ukungaphumeleli kwezintso (umngcipheko ophezulu kubantu esele benengxaki yezintso okanye isifo seswekile)
• Ukubetha (oku kunqabile)

Emva kovavanyo, i-catheter isuswe ngokupheleleyo. Ibandage ibekwe kuloo ndawo. Uya kucelwa ukuba ulale uthe tyaba emqolo ngoxinzelelo kwindawo yakho ye-groin iiyure ezimbalwa emva kovavanyo ukunqanda ukopha.

Ukuba i-IVUS yenziwe ngexesha:

• Ukuthanjiswa komzimba ngu-catheterization: Uya kuhlala esibhedlele malunga neeyure ezi-3 ukuya kwezi-6.
• I-Angioplasty: Uya kuhlala esibhedlele iiyure ezili-12 ukuya kwezi-24.

IVUS ayongezi kwithuba lokuhlala kwakho esibhedlele.

IVUS; I-Ultrasound - umthambo wecoronary; I-endovascular ultrasound; I-echocardiography yangaphakathi

• Imithambo yentliziyo engaphambili
• Inkqubo yokuqhuba kwentliziyo
• I-Coronary angiography

IHonda Y, iFitzgerald PJ, iYock PG. I-ultrasound yangaphakathi. Ku: I-Topol EJ, iTeirstein PS, ii-eds. Incwadi yeNdlela yokuNgenelela kweCardiology. Ngomhla we-8. IPhiladelphia, PA: Elsevier; 2020: isahluko 65.

I-Yammine H, iBallast JK, iArko FR. I-ultrasound yangaphakathi. Ku: Sidawy AN, Perler BA, ii-eds. Rutherford Uqhaqho lweMithambo kunye noNyango lwe-Endovascular. Umhla we-9. IPhiladelphia, PA: Elsevier; I-2019: isahluko 30.