I-Doppler Color Ultrasound: Masingabi nandawo yokuzimela kwiSifo

I-cardiac Doppler ultrasound yindlela yovavanyo esebenzayo kakhulu ekuxilongweni kwesifo sentliziyo, ingakumbi isifo sentliziyo esizalwa naso. Ukususela ngeminyaka yoo-1980, ubuchwepheshe bokuxilonga nge-ultrasound buqalile ukuphuhliswa ngesantya esimangalisayo. Njenge-magnetic resonance imaging, i-CT kunye ne-isotope scanning, i-cardiac Doppler ultrasound ikwanendawo kwiiteknoloji ezine eziphambili zokuxilonga imifanekiso kwizonyango zanamhlanje.
I-cardiac Doppler ultrasound yenye yezona teknoloji zibalulekileyo zovavanyo lwemifanekiso kwiimvavanyo zentliziyo ezingangenisi ntsholongwane. Le teknoloji yovavanyo ayinazo nje kuphela iingenelo zokuba ingabi buhlungu, iphindaphindeke, ingabi nabungozi kwaye ilula, kodwa ikwanazo neziphumo zovavanyo ezicacileyo nezichanekileyo kunezinye iimvavanyo zovavanyo lwemifanekiso. Emva kweminyaka eliqela yokunyusa umgangatho, i-cardiac Doppler ultrasound iye yaba sisixhobo sokuxilonga esibalulekileyo kwizonyango zanamhlanje.
Ngokubanzi, ukuba isiphumo sokufumanisa sincinci, akukho nyango lukhethekileyo lufunekayo. Ukuba kukusilela kwentliziyo okuphakathi okanye okukhulu, unyango kufuneka lwenziwe ngokukhawuleza ukuthintela utshintsho kwisakhiwo sentliziyo yesigulana kunye nokuba nokwenzeka kweengxaki ezinkulu. Ekuhlolweni kwe-cardiomyopathy, i-cardiac Doppler ultrasound inokumisela ubungakanani be-myocardial hypertrophy kunye nokwandiswa kwegumbi lentliziyo kwizigulana; kwizigulana ezinesifo sentliziyo, i-cardiac Doppler ultrasound inokubonisa ngokuzenzekelayo indawo ye-myocardial ischemia, inceda oogqirha ukuba baphuhlise izicwangciso zonyango ezifanelekileyo ngokweemeko ezithile zezigulana. Izifo eziphambili ezichongiweyo yi-cardiac Doppler ultrasound ziquka izilonda ze-aortic (ezifana nezilonda ezifana ne-aortic stenosis), izifo ze-valve yentliziyo (ezifana nezilonda ze-mitral valve, i-stenosis, njl.njl.), izifo ze-ventricular, njl.njl.
I-cardiac Doppler ultrasound ayinakubonisa kuphela ukusasazwa kokuhamba kwegazi okungaqhelekanga kwintliziyo, kodwa ikwabonisa nendlela kunye necala lokuhamba kwegazi kwentliziyo ukuya kwinqanaba elithile. Ingamisela ukuba uhlobo lokuhamba kwegazi kwentliziyo luhamba nge-laminar, ukuhamba okuguquguqukayo okanye ukuhamba kwe-eddy, kwaye inokulinganisa umda, indawo, ubude kunye nobubanzi obuthile bomsebe wokuhamba kwegazi. I-cardiac Doppler ultrasound inokubonisa ngokuthe ngqo ubudlelwane phakathi kwesakhiwo sentliziyo esingaqhelekanga kunye ne-hemodynamics yentliziyo engaqhelekanga ngokubonisa ulwazi lokuhamba kwegazi kumzobo onqamlezileyo onamacala amabini. Bonke abantwana abarhanelwa ukuba banesifo sentliziyo sokuzalwa kufuneka bahlolwe i-cardiac Doppler ultrasound ukuze kuchongwe uphuhliso oluthile lwesifo.