Fetal movements Fetal breathing Contraction stress testing Nonstress

태아사망을 예방하고 불필요한 처치를 하지 않기 위함 • Fetal movements • Fetal breathing • Contraction stress testing • Nonstress tests • Acoustic stimulation tests • Biophysical profile • Amnionic fluid volume • Doppler velocimetry

산전태아안녕평가 Normal result is highly reassuring but PPVs are low. • 음성예측치(negative predictive value)>99. 8% • 양성예측치(positive predictive value) 10 -40% • 산전태아안녕평가의 검사 결과는 임상적 상황을 근거 로 판단하여야 한다.

태동 Tocodynamometer Sonography Maternal perception Subjectively reduced fetal movement in the third trimester.

수축자극검사(contraction stress test)-해석

생물리학적 계수(biophysical profile, BPP) -검사방법

Doppler velocimetry f 0 fd=2(f 0·cos. A·V) c fd A V fd peak systole fd end diastole

Umbilical artery Doppler, 탯줄동맥 도플러 Fetal growth restriction 이완기혈류의 소실 Absent end-diastolic flow 이완기혈류의 역류 Reversed end-diastolic flow Fetal hypoxia

Middle cerebral artery, 중뇌동맥 도플러 Fetal growth restriction Brain sparing reflex ; hypoxic fetus, by reducing cerebrovascular impedance and increasing blood flow increased diastolic flow Fetal anemia increased peak systolic velocity

Ductus venosus, 정맥관 Fetal growth restriction Uterine artery uteroplacental insufficiency