Nordenskjöld F, Ahlgren M
Department of Obstetrics and Gynecology, University Hospital, Lund, Sweden.
Acta Obstet Gynecol Scand. 1991;70(7-8):575-9. doi: 10.3109/00016349109007919.
In a population-based case-control study, possible risk factors for ectopic pregnancy were compared in 119 patients with ectopic pregnancy and in 119 age-matched controls with intra-uterine pregnancy from each of the following categories: deliveries, spontaneous abortions and induced abortions. The following factors were found significantly more often in cases of ectopic pregnancy: a history of earlier ectopic pregnancy, a history of salpingitis, a history of earlier operation on the Fallopian tubes, a history of infertility, and a pregnancy that had occurred in spite of an intra-uterine contraceptive device. A history of appendectomy was also found significantly more often among the cases. There was no significant correlation between ectopic pregnancy and a history of no earlier pregnancy, earlier deliveries, earlier spontaneous or induced abortions or a history of other gynecological operations and increased risk of ectopic pregnancy. One or more of the risk factors were found in 76.5% of cases and 23% of controls.
在一项基于人群的病例对照研究中，对119例异位妊娠患者以及119例年龄匹配的对照者（分别来自分娩、自然流产和人工流产后的宫内妊娠）的异位妊娠可能危险因素进行了比较。结果发现，异位妊娠患者中以下因素更为常见：既往异位妊娠史、输卵管炎病史、既往输卵管手术史、不孕史以及宫内节育器避孕失败后的妊娠。病例组中阑尾切除术史也更为常见。异位妊娠与既往无妊娠史、早产、早期自然流产或人工流产史或其他妇科手术史之间无显著相关性，且这些因素并不会增加异位妊娠风险。76.5%的病例组患者存在一个或多个危险因素，而对照组这一比例为23%。
