若按澳大利亚体外受精研究组的报道,妊娠例数中的22.3％为多胎妊娠,其中18.7％为双胎,3.5％为三胎,0.1％为四胎。多胎妊娠因不孕症治疗进展和普及有增多倾向,因而根据多胎妊娠时母体的生理变化特征进行管理,成为今后的重要课题。 According to the Australian In Vitro Fertilization Research Unit, 22.3% of pregnancies were multiple pregnancies, of which 18.7% were twins, 3.5% were third and 0.1% were fourth. Multiple pregnancies due to the progress of infertility treatment and the increasing tendency to popularize, so according to the physiological changes of maternal multiple pregnancy gestational characteristics has become an important issue in the future.