title: Effect of hyperemesis gravidarum on gestational diabetes mellitus screening.
abstract: OBJECTIVE
  To clarify the effect of starvation due to hyperemesis gravidarum on the screening of gestational diabetes mellitus (GDM).
  
  
  METHODS
  A retrospective study was undertaken of pregnant women who delivered at Tsukuba University Hospital, Japan, between October 1, 2010, and September 30, 2013. GDM screening was performed in the first trimester using the random blood glucose test with a cutoff value of 5.2mmol/L and in the second trimester using a 50-g glucose challenge test with a cutoff value of 7.8mmol/L. If the screening was positive, a 75-g oral glucose tolerance test was performed for a definite diagnosis.
  
  
  RESULTS
  Among 2112 eligible women, 33 (1.6%) required hospitalization for hyperemesis; the remaining 2079 women formed the control group. In the first trimester, the positive GDM screening rate was significantly higher in the hyperemesis group than in the control group (13 [39.4%] vs 115 [5.5%]; P<0.001). Additionally, the positive predictive value was significantly lower in the hyperemesis group (23.1% vs 73.9%; P<0.001). In the second trimester, no significant differences were observed between groups.
  
  
  CONCLUSIONS
  Hyperemesis gravidarum affects the positive GDM screening rate in the first trimester.
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan. Electronic address: renaohara@md.tsukuba.ac.jp.
authors.forename: Rena
authors.initials: R
authors.lastname: Ohara
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.
authors.forename: Mana
authors.initials: M
authors.lastname: Obata-Yasuoka
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.
authors.forename: Kanako
authors.initials: K
authors.lastname: Abe
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.
authors.forename: Hiroya
authors.initials: H
authors.lastname: Yagi
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.
authors.forename: Hiromi
authors.initials: H
authors.lastname: Hamada
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yoshikawa
mesh_terms: D000328:Adult; D001786:Blood Glucose / Q000032:analysis; D016640:Diabetes, Gestational / Q000175:diagnosis*; D005260:Female; D005951:Glucose Tolerance Test; D006801:Humans; D006939:Hyperemesis Gravidarum / Q000097:blood*; D007564:Japan; D062145:Maternal Serum Screening Tests / Q000009:adverse effects* / Q000379:methods; D011237:Predictive Value of Tests; D011247:Pregnancy; D011261:Pregnancy Trimester, First / Q000097:blood*; D011262:Pregnancy Trimester, Second / Q000097:blood*; D012189:Retrospective Studies
chemical_list: D001786:Blood Glucose
keywords: Gestational diabetes mellitus; Hyperemesis gravidarum; Screening