title: Recurrence risk of hyperemesis gravidarum.
abstract: BACKGROUND
  The purpose of this study is to describe the recurrence risk for hyperemesis gravidarum (HG).
  
  
  METHODS
  Women who registered on a Web site sponsored by the Hyperemesis Education and Research Foundation as having had one HG-complicated pregnancy were contacted to follow-up on a subsequent pregnancy. Participants completed an online survey.
  
  
  RESULTS
  One hundred women responded. Fifty-seven had become pregnant again, 2 were trying to conceive, 37 were not willing to get pregnant again because of HG, and 4 did not have a second pregnancy for other reasons. Among the 57 women who responded that they had become pregnant again, 81% reported having severe nausea and vomiting in their second pregnancy. Among the women reporting recurrent HG, 98% reported losing weight and taking prescribed medication for HG, 83% reported treatment with intravenous fluids, 20% reported treatment with total parenteral nutrition or nasogastric tube feeding, and 48% reported hospitalization for HG.
  
  
  CONCLUSIONS
  This study demonstrates both a high recurrence rate of HG and a large percentage of women who change reproductive plans because of their experiences with HG.
authors.affiliation: University of California at Los Angeles, Los Angeles, CA, USA. nvpstudy@usc.edu
authors.forename: Marlena S
authors.initials: MS
authors.lastname: Fejzo
authors.forename: Kimber W
authors.initials: KW
authors.lastname: Macgibbon
authors.forename: Roberto
authors.initials: R
authors.lastname: Romero
authors.forename: T Murphy
authors.initials: TM
authors.lastname: Goodwin
authors.forename: Patrick M
authors.initials: PM
authors.lastname: Mullin
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D006939:Hyperemesis Gravidarum / Q000453:epidemiology* / Q000517:prevention & control*; D011247:Pregnancy; D011256:Pregnancy Outcome; D012042:Registries; D018570:Risk Assessment; D012307:Risk Factors; D055502:Secondary Prevention