Gastl G, Schwab W, Raas E
Wien Med Wochenschr. 1981 Aug 31;131(15-16):383-5.
Stroke volume and cardiac output were determined in 24 pregnant women at the end of the first and second trimenon. There was a decrease of cardiac output in 7 women (29%) and among these a decrease of stroke volume in 6 women (25%). In this group there were especially untrained women with a high incidence of "health complications" during pregnancy.
在24名孕妇的孕早期和孕中期结束时测定了每搏输出量和心输出量。7名女性（29%）的心输出量下降，其中6名女性（25%）的每搏输出量下降。这组人群中尤其包括未受过训练的女性，她们孕期出现“健康并发症”的发生率很高。
