Vellacott I D, Cooke E J, James C E
Department of Obstetrics and Gynaecology, St. Thomas' Hospital, London, UK.
Int J Gynaecol Obstet. 1988 Aug;27(1):57-62. doi: 10.1016/0020-7292(88)90088-4.
To study the problem of nausea and vomiting in early pregnancy an epidemiological survey was undertaken, obtaining information from 500 consecutive antenatal patients. Seventy-six percent of women complained of symptoms during the first trimester, and in only 27% had the symptoms resolved by the twelfth week. Job efficiency was markedly impaired. Women who suffered nausea premenstrually, or on the oral contraceptive pill, were much more likely to develop symptoms, lending credence to a hormonal etiology for the condition.
为研究妊娠早期恶心和呕吐问题，开展了一项流行病学调查，从500名连续就诊的产前患者中获取信息。76%的女性在孕早期出现症状，只有27%的女性在孕12周时症状缓解。工作效率明显受损。经前或口服避孕药时出现恶心的女性更易出现这些症状，这为该病的激素病因提供了证据。
