目的 分析死胎死亡原因及可能的相關因素，為降低死胎發生的措施提供依據。 方法 對2007年1月－2011年12月住院分娩的609例死胎（≥28周） 的病例資料進行回顧性分析,包括對產檢次數差異、死胎性別、死胎孕周分布、母親年齡差別、母親文化程度等進行統計分析。 結果 ① 死胎的原因依次為：胎兒因素（41.2%），母體因素（24.1%），胎盤因素（21.7%）及不明原因（13.0%）；其中胎兒畸形、重度子癇前期及胎盤早剝為主要原因；② 母親的文化程度低、未建卡或未正規產檢者死胎發生的幾率高于正規產檢者，差異有統計學意義（P＜0.05）。 結論 加強圍產保健，早期篩查胎兒畸形、防治妊娠期并發癥及合并癥等都有助于降低死胎的發生率。
【Abstract】 Objective To observe the effects of scoliosis on pulmonary function. Methods 31 cases of scoliosis were included and underwent pulmonary function test ( PFT) . The cases were divided into an adolescent group ( 16 cases) and an adult group ( 15 cases) according to age. Predicted value was used as a reference to assess various PFT parameters. Results In both groups, forced expiratory volume in one second, forced vital capacity, and pulmonary diffusion decreased. In the adolescent group, residual volume,functional residual volume, and total lung capacity decreased. In the adult group, vital capacity and maximal voluntary ventilation decreased, the ratio of forced expiratory volume in one second to forced vital capacity decreased, and resonance frequencies increased significantly compared with the adolescent group ( P lt; 0. 05) . Conclusion Scoliosis may lead to restrictive ventilation defect, which is mainly lung volume reduction in adolescent patients and more severe in adult patients.