Methods The abnormal intrapartum FHR tracing patterns of 90 cases were compared with 90 cases with normal ones from July 2002 to March 2003.

• 方法回顾分析2002年7月至2003年3月90例产时胎心监护图形异常的病例(观察组)和同期90例产时胎心监护图形正常的病例(对照组)的临床资料。