Physiologic changes in pregnant women and their fetuses during jet air travel

Fetal heart rate and uterine contraction during automobile driving

“…Huch et al . studied the physiologic reactions of pregnant women at 32–38 weeks of gestation and their fetuses during routine commercial flights 12 . They revealed that there was no abnormal change in the fetal heart rate or uterine contractions except for elevated maternal heart rate and blood pressure during flight.…”

7. Circulation

“…With the progression of pregnancy, the uterus compresses the venous return more and more, which partly accounts for the drop in Q̇ in late pregnancy noted in the earlier studies, and it is possible that venous return is also reduced in the sitting position (Schneider et al . 1984; Huch et al . 1986).…”

Flying during pregnancy

“…In normal health she shall be accepted without medical clearance However, medical clearance will be required, if: -confinement may be expected in less than 4 weeks or -there is uncertainty of progress of pregnancy or previous multiple births,or complications Air travel is not recommended for: -Expectant mothers within the last month prior to confinement -New-born babies within the first 7 days after birth Premature babies will be considered as medical cases. 1), [12]. die entsprechenden Drücke und Sauerstoffkonzentrationen in der Einatmungsluft gemessen und minimale Werte mit 115,5 mmHg entsprechend 15,2% O 2 gefunden, was auch den höhenphysiologischen Berechnungen entspricht [24].…”