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Digestive Diseases and Sciences

, Volume 35, Issue 8, pp 961–968 | Cite as

Gastric dysrhythmias and nausea of pregnancy

  • K. L. Koch
  • R. M. Stern
  • M. Vasey
  • J. J. Botti
  • G. W. Creasy
  • A. Dwyer
Original Articles

Abstract

Gastric dysrhythmias have been recorded from patients with a variety of nausea syndromes. The aim of this study was to measure gastric myoelectric activity in women with and without nausea during the first trimester of pregnancy. In 32 pregnant women gastric myoelectric activity was recorded for 30–45 min with cutaneous electrodes that yielded electrogastrograms (EGGs). Frequencies of the EGG waves were analyzed visually and by computer. Subjects rated their nausea at the time of EGG recording on a visual analog scale with 0 representing no nausea and 300 mm severe nausea. Gastric dysrhythmias were found in 26 pregnant subjects: Seventeen had tachygastrias (EGG frequencies of 4–9 cpm),five had 1- to 2-cpm EGG waves, and four had flat-line patterns. Mean nausea scores of the subjects with tachygastrias, 1- to 2-cpm, and flat-line patterns were 64.8±13, 93.4±23, and 77.2±36, respectively. Six pregnant subjects had normal 3-cpm EGG patterns, and their nausea scores averaged 2.8±1.1 (P<0.05 compared with nausea scores in subjects with tachygastrias, 1- to 2-cpm, and flat-line rhythms). Six subjects with gastric dysrhythmias during pregnancy were restudied after delivery; each of these subjects had normal 3-cpm EGG patterns and none had nausea. Thus, gastric dysrhythmias are objective pathophysiologic events associated with symptoms of nausea reported during the first trimester of pregnancy.

Key words

electrogastrography pregnancy vomiting spectral analysis 

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Copyright information

© Plenum Publishing Corporation 1990

Authors and Affiliations

  • K. L. Koch
    • 1
  • R. M. Stern
    • 1
  • M. Vasey
    • 1
  • J. J. Botti
    • 1
  • G. W. Creasy
    • 1
  • A. Dwyer
    • 1
  1. 1.Departments of Medicine, Obstetrics and Gynecology, and PsychologyThe Pennsylvania State UniversityHershey and University Park

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