Intlawulo yenhliziyo ye-Fetal ibonakaliso esibalulekileyo kungekhona nje kwinkqubo ye-cardiovascular system, kodwa yindoda encinci. Ukungabikho kwe-oksijini kunye nezondlo kwindawo yokuqala, kubonakaliswa ngenguqu kwisantya senhliziyo yomntwana. Isantya senhliziyo yomntwana kwisithuba sokubanjwa kweeveki ezili-12 sinokumiselwa kuphela ngokuhlolwa kwe-ultrasound, kwaye emva komhla (emva kweeveki ezingama-24) kule njongo isetyenziselwa i- stethoscope ye- obstetric kubafazi abakhulelwe kunye ne-cardiotocography.
Iimpawu zophuhliso kunye nokusebenza kwentliziyo yombungu
Inkqubo ye-cardiovascular yenziwe kwi-embryo ngokukhawuleza njengoko inkqubo ye-nervous, ngaphambi kokubunjwa kwamanye amalungu kunye neenkqubo. Ngaloo ndlela, ukwahlula kwe-zygote kuholele ekubunjweni kwenani leeseli, elizahlula zibe zihlulo ezi-2, litshintshelwe kwi-tube. Ukusuka kwinqanaba elingaphakathi lwakhiwa, elibizwa ngokuba yiyona nto yokuqala yenyama. Ukongezelela, ikhula ngokukhawuleza kwaye ixoxe ngokunene, okuyiyo isibambiso sokuma kwesigxina senhliziyo kulo mntwana ekuzalweni.
Kwiiveki ezi-4 zokukhulelwa kwicandelo elincinane le-loop eyakhiweyo ibonakala ukuqhawulwa kokuqala-oku kukuqala kweentlobo zentliziyo encinci. Uphuhliso olusebenzayo lwenhliziyo kunye neempahla ezinkulu zivela kwiiveki ezi-5 ukuya kwezi-8 zokukhulelwa. Ukuphuhlisa ukuphuhliswa kwenkqubo ye-cardiovascular kubaluleke kakhulu kwi-herto- ne-organogenesis.
Isantya senhliziyo yentliziyo kwiiveki ezili-12 zokukhulelwa ngokuqhelekileyo i-130-160 ibhokhwe ngomzuzu kwaye ingatshintshi kuze kube sekuzalweni. I-Bradycardia engaphantsi kwe-110 ibhokhwe ngomzuzu okanye i-tachycardia ngaphezulu kwe-170 ibhokhwe ngeminithi yimiqondiso yokuba umntwana ulwa nokungabikho kwe-oksijini okanye iziphumo zentsholongwane ye-intrauterine .
Ngaloo ndlela, ngokuqwalasela iimpawu zophuhliso lwe-cardiovascular system ye-fetus, sinokugqiba ukuba impumelelo yokwakhiwa kwamanye amalungu kunye nezindlela ngokuthe ngqo kuxhomekeke kumgangatho wenhliziyo kunye nemithambo yegazi.