Ukushaya kwenhliziyo kwengane kungenye yezibonakaliso zokuqala kompilo omusha okhula futhi ukhule ngaphakathi kowesifazane okhulelwe. Izibonakaliso zokuqala zokuphambana kwenhliziyo eyenziwe zibonakala kakade ngeviki lesihlanu phakathi kokuhlolwa kwe-ultrasound, phakathi nalesi sikhathi kubonakala sengathi ithubhu elingenalutho futhi libukeka nje njengenhliziyo yomuntu okwesishiyagalolunye.
Ukwehliswa kwe-fetus emavikini angu-12
Ngaphambi kwamasonto angu-12 okukhulelwa, izinga lentliziyo ye-fetal liyashintsha futhi kuxhomeke eminyakeni yobudala. Ngakho kusukela emavikini angu-6 ukuya kwangu-8 izinga lokushaya kwenhliziyo lishaya ngo-110-130 ngomzuzu, kusuka emavikini angu-9 ukuya kwangu-11 kusukela ku-180 kuya ku-200 ukushaya ngeminithi. Kusukela ngesonto le-12 lokukhulelwa, ukushaya kwenhliziyo kuhlelwe ku-130 kuya kwezingu-170 ukushaya ngomzuzu, futhi lokhu kuvame ukuhlala kuze kube sekuzalweni ngokwaso. Ukusungulwa kwezinga lenhliziyo kuhlotshaniswa nokuvuthwa kwesistimu ye-neon autonomic. Ukulalela isisu senhliziyo esiswini lwesonto le-12 lokukhulelwa kungenzeka kuphela nge-ultrasound. Lapho i-ultrasound yokuqala yokuhlola iyenziwa emavikini angu-9-13, inhliziyo inamakamelo amane (ama-atria amabili nama-ventricles amabili).
Kungenzeka yini ukuzwa inhliziyo ye-fetal?
Njengoba sesishilo kakade, ukushaya kwenhliziyo emavikini angu-12 kungazwakala kuphela ngesikhathi se-ultrasound. Kusukela ngesonto lama-20, i-heartbeat ye-fetal ingase izwakale nge-auscultation isebenzisa i-stethoscope yombelethisi. I-stethoscope ifakwe emthonjeni, futhi ngakolunye uhlangothi indlebe kadokotela igxiliwe, kuyilapho ukuvama nokulinganisa kwenhliziyo ye-fetal kunqunywa. Kusukela emavikini angu-32, i-cardiotocography (CTG) ingasetshenziswa - inqubo ekhethekile yokunquma izinga lokushaya kwenhliziyo lomntwana. I-CTG isetshenziselwa kabanzi ngesikhathi sokubeletha, lapho kudingekile ukulandelela hhayi kuphela uhlobo lwezinhliziyo zenhliziyo, kepha nokunyakaza nokukhuphuka kwesibeletho.
Iyini inhliziyo yentombazane ekhuluma?
Ukwehliswa kwe-fetus kungenye yezinkomba zokuthuthukiswa okuvamile kombungu, ukungabi khona kwenhliziyo evikini lesishiyagalombili lokukhulelwa kubonisa ukukhulelwa okungathuthuki. I-heart rate ye-fetal yanda ingabonisa ukuthi i-hypoxia yentombazane kanye nezinqubo zokukhokha, futhi i-bradycardia yezinsimbi ezingaphansi kwezingu-100 ngomzuzu yisignali ye-alamu ekhuluma nge-hypoxia ejulile.
Ngakho-ke, ukushaya kwenhliziyo okuhle kwe-fetus kuyimfuneko ebalulekile yentuthuko yayo eyanele. Ngezikhathi ezihlukahlukene zokukhulelwa, kunezindlela zokulinganisa izinga lokushaya kwenhliziyo: amasonto angama-18 we-ultrasound, futhi emva kwamasonto angu-18 ungasebenzisa i-stethoscope yombelethisi kanye ne-apparatus yokulalela ukushaya kwenhliziyo kwe-fetus.