第九章 分娩期疾病Chapter9 The Disease of Parturition 第一节 难产概述Part One the Summary of Dystocia 难产(Dystocia)是指由于各种原因而使分娩的第一阶段(开口期),尤其是第二阶段(胎儿排出期)明显延长,母体难于或不能排出胎儿的产科疾病。 Dystocia is a obstetrical disease, which extent the stage of cervicial dilatation and fetus expulsion, and make the dam deliver difficult or even never. 一、难产的发病率一、The Incidence of Dystocia 牛、羊最多 cow and sheep are highestv二、难产的病因v二、The Factors of Dystociav 1. 普通病因: 是指通过影响母体或胎儿而使正常的分娩过程受阻。 common factors: hinder natural puerperal process by e
