Grasp the operation indicatio reasonablely, raise obstetrics quality, cut down incidence rate of asphyxia neonatorum.

合理掌握手术适应证，提高产科质量，降低新生儿窒息的发生率。

The mortality rate of premature infants had close relation with gestational age, birth weight and sclerema neonatorum.

早产儿死亡率与孕周、体重密切相关，并发硬肿症者死亡率更高。