Yingakho bonke abomama abazayo balinde isikhathi lapho uzwa khona ukushaya kwenhliziyo kwengane yakho ngosizo lwemishini yesimanje ye-ultrasound. Kusukela kulo mzuzu impilo entsha esiswini sowesifazane iqala ukuthuthukisa, futhi ezinyangeni ezimbalwa emhlabeni uzoba nomuntu oyedwa ngaphezulu eMhlabeni.
Kulesi sihloko, sizokutshela indlela inhliziyo ekhula ngayo embrus emva kokukhulelwa, futhi uma iqala ukushaya ngenkathi evamile yokukhulelwa.
Ukukhula kwe-intrauterine yenhliziyo yengane
Umbungu owavela emzimbeni womama, kuqala, uyaphila, ngakho-ke udinga ukugunyazwa oksijini okwanele ukugcina umsebenzi obalulekile kanye nentuthuko esebenzayo. Yingakho ukwakheka kwe-system circulatory kuyinto yokuqala ephambili emzimbeni omncane.
Sekuvele ngesonto lesibili emva kokukhulelwa, lapho ubukhulu bombungu obusungule bungaphansi kwe-1 mm, amaseli ayo kancane kancane aqala ukuhlukanisa abe "emigqumeni yamabriyoni" amathathu. Ngamunye wabo uzobe enikezwa imisebenzi ethile futhi, ikakhulukazi, isilinganiso sizobamba iqhaza ekwakheni uhlelo lokujikeleza, imisipha, izinso, amathambo kanye ne-cartilage.
Cishe ngesonto lesithathu ngemuva kokuhlanganiswa kwesidoda neqanda, kuhlanganiswa ithubhu elincane elingenalutho, elihlanganisa ngokuphelele umzimba omncane we-fetus. Lesi sigaba sibaluleke kakhulu ekuthuthukiseni umntwana ozayo, ngoba emva kwesikhathi le tube izophendukela enhliziyweni yakhe.
Isiqalo sokuqala segciwane lesikhathi esizayo senziwa ngosuku lwama-22 ngemuva kokusungulwa kombungu, nokho, ngalesi sikhathi sokukhulelwa akukalawulwa uhlelo lwesimiso. Kule nkathi emithi yokwelashwa okubhekwa njengesiqalo senkathi lapho inhliziyo ishaya embungu. Ngemuva kwalokho, nsuku zonke inhliziyo encane izohlehlisa ngokuphindaphindiwe, futhi ngosuku lwama-26 emva kokuba umbungu usungule, uzoqala ukupompa igazi ngokwayo futhi wenze ngesigqi esithile.
Phakathi nalesi sikhathi sokuthuthukiswa, inhliziyo yengane yesikhathi esizayo ihlangene eyodwa futhi ibukeka nje iyingxenye esemqoka yomuntu omdala. Cishe ngesonto eliyisikhombisa lezinkinga zokulindela umntwana, kutholakala i-septum kuwo, futhi isakhiwo esizojwayele ukutholakala kuphela emva kwamasonto ayi-10-11. Ngaphezu kwalokho, kulokhu konke ukukhulelwa, inhliziyo yesisu ihlale ishintshe kakhulu, ithuthukiswe kanye nezinye izitho futhi ihlinzeke nge-oxygen nezinye izakhi ezidingekayo.
Inhliziyo iqala ukushaya amasonto amangaki nge-fetus?
Njengoba kuphawuliwe ekuqaleni, inhliziyo ye-fetal iqala ukushaya uma kuqala ukuqhuma okungazibandakanyi, okungukuthi, cishe ngosuku lwama-22 emva kokukhulelwa. Ngesikhathi esifanayo, lokhu kuncishiswa kubuthakathaka kakhulu, futhi akunakwenzeka ukuwubamba ngisho nangesiza semishini yesimanje. Ngaphezu kwalokho, phakathi nalesi sikhathi sokuthuthukiswa kombungu, akanakho isigqi senhliziyo.
Omama abaningi abalindayo banesithakazelo sokuthi umlungu usuvele ushaya kanjani inhliziyo isikhathi eside, futhi le nqubo ingalungiswa. Ezimweni eziningi, lokhu kwenzeka ngesonto lesine lokuthuthukiswa kwengane esibelethweni sikamama, okungukuthi, ngeviki lesithupha lokukhulelwa. Kule nkathi odokotela batusa ukuxilongwa kwe-primary ultrasound ukuqinisekisa ukuthi ingane iyaphila futhi ikhula ngendlela evamile.
Ukwengeza, kwezinye izimo, abesifazane banesithakazelo ukuthi yisiphi isonto ongezwa ukuthi umbungu ushaya inhliziyo, ngaphandle kokusebenzisa imishini ekhethekile. Ngokuvamile, ngemuva kwamasonto angu-18-20 okubeletha, udokotela angakwazi ukubona kalula ukushaya kwenhliziyo encane nge- stethoscope noma umtshina weDoppler. Ukwenza lokhu, ngokusemthethweni, ungakwazi kanye nowesifazane ngokwayo, kodwa ngenxa yobukhona bomsindo obangelwayo ukuqhuba ukuxilongwa okunembile akuyona yonke into.