5Thorne S, MacGregor A, Nelson-Piercy C. Risks of contraception and pregnancy in heart disease[J]. Heart,2006,92 (10) :1520 -1525.
6Rychik J, Ayres N, Cuneo B, et al. American Society of Echocardio- graphy guidelines and standards for performance of the fetal echocar- diogram [ J ]. J Am SocEchocardiogr,2004,17 (7) :803 - 8 I0.
7European Society of Gynecology (ESG), Associationfor European Pae- diatric Cardiology (AEPC), German Society for Gender Medicine ( DGesGM), et al. ESC Guidelines on the management of aorticdiseas- esduring pregnancy : the task force on the managementof aorticdiseases during pregnancy of the Europeansociety of cardiology [ J ]. EurHeart J,2011,24(32) :3147 -3197.
8Thomas JS, Koh SH, Cooper GM. Haemodynamic effects of oxytocingi- yen as i. v. bolus or infusion on women undergoing Caesarean section [ J]. Sr J Anaesth,2007,98( 1 ) :116 - 119.