Intliziyo yomntwana ingenye yeempawu zokuqala zobomi obutsha obukhula kwaye bukhule ngaphakathi kwowesifazane okhulelweyo. Impawu zokuqala zeentlukwano zentliziyo eyenza zibonakala zivele ngeveki yesihlanu ngexesha lokuhlolwa kwe-ultrasound, ngelo xesha libukeka njengefuthe elingenanto kwaye libonakala lifana nentliziyo yomntu kwisithoba.
Ukuguqulwa kwe-fetus kwiiveki eziyi-12
Ngaphambi kweveki ezi-12 zokukhulelwa, izinga lentliziyo ye-fetal litshintsha kwaye kuxhomekeke kwiminyaka yobudala. Ngoko ukususela kwiiveki ezi-6 ukuya kwii-8 intliziyo yesantya i-110-130 ibhokhwe ngomzuzu, ukususela kwiiveki ezi-9 ukuya kwe-11 ukusuka kwi-180 kuya kwe-200 ukubetha ngomzuzu. Ukususela ngeveki ye-12 yokukhulelwa, intliziyo isetyenziswe kwi-130 ukuya kwe-170 ibhokhwe ngomzuzu, kwaye le nxeba isala kude kube kuzalwa. Ukusekwa kwentlawulo yenhliziyo kudibene nokuhluthwa kwenkqubo ye-neon autonomic. Ukuphulaphula intliziyo ye-fetal kwiveki ye-12 yokukhulelwa kunokwenzeka kuphela nge-ultrasound. Xa i-ultrasound yokuqala yokuhlola iyenziwa kwiiveki ezingama-9-13, intliziyo inamagumbi amane (i-atria ezimbini kunye nee-ventricle ezimbini).
Ngaba kunokwenzeka ukuva intliziyo yesisu?
Njengoko sithe satsho, intliziyo yeeveki ezili-12 ingaviwa kuphela ngexesha le-ultrasound. Ukuqala ngeveki ye-20, intliziyo ye-fetal i-heartbeat ingacatshulwa ngokukhwabanisa ngokusebenzisa i-stethoscope yombelethisi. I-stethoscope ifakwe kwi-fetal back, kwaye ngakolunye uhlangothi indlebe yodokotela igxininiswe, ngelixa ubude kunye nesingqimba sezinga lentliziyo yesisu lizimisele. Ukususela kwiiveki ezingama-32, i-cardiotocography (CTG) ingasetyenziselwa - ubuchule obukhethekileyo bokumisela izinga lentliziyo yomntwana. I-CTG isetyenziswa kakhulu ngexesha lobasebenzi, xa kuyimfuneko ukulandelela nje kuphela uhlobo lwentliziyo ye-fetal, kodwa kunye nokuhamba kwayo kunye nokuqhekeka kwesibeletho.
Kuthetha ukuthini intliziyo yesisu?
Ukuguqulwa kwe-fetus yenye yezona zibonakaliso zophuhliso oluqhelekileyo lwe-embryo, ukungabikho kwesimo senhliziyo kwiveki ye-8 yokukhulelwa kubonisa ukukhulelwa okungaphuthunyanga. Ukukhula kwentliziyo ye-Fetal kungabonakalisa i-hypoxia yobusana kunye neendlela zokuhlawulela, kunye ne-bradycardia engaphantsi kwe-100 beats ngomzuzu ngumqondiso we-alamu othetha nge-hypoxia enzulu.
Ngaloo ndlela, intliziyo enhle yentsana iyimfuneko ebalulekileyo yokuphuhlisa ngokwaneleyo. Kwixesha elihlukeneyo lokukhulelwa, kukho iindlela zokulinganisa intlawulo yenhliziyo: ukuya kwiiveki ezingama-18 ze-ultrasound, kwaye emva kweveki ezingama-18 ungasebenzisa i-stethoscope yombelethi kunye ne-apparatus ukuphulaphula intliziyo yesisu.