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Vibratory acoustic stimulation in 26- to 32-week, small-for-gestational-age fetus

Authors
Journal
American Journal of Obstetrics and Gynecology
0002-9378
Publisher
Elsevier
Publication Date
Volume
160
Issue
1
Identifiers
DOI: 10.1016/0002-9378(89)90111-7
Keywords
  • Fetal Sensory Receptors
  • Fetal Heart Rate Accelerations
  • Fetal Movements
  • Earlyonset Intrauterine Growth Retardation
Disciplines
  • Medicine
  • Musicology
  • Physics

Abstract

Seven pregnant women with early-onset (<32 weeks' gestation) intrauterine growth retardation were studied to examine fetal heart rate and fetal activity patterns after vibratory acoustic stimulation. All studies were done between 26 and 32 weeks' gestation. All fetuses but one were not acidotic at birth. There was a reduced time during which accelerations (50% less), long-term fetal heart rate variability (25% less), and body movements (60% less) occurred in small-for-gestational-age fetuses compared with these times in age-matched normally grown fetuses. Fetal heart rate and fetal activity patterns were not significantly altered after stimulation with the electronic artificial larynx. We hypothesized that severe, early-onset (<32 weeks' gestation), chronic nutritional deprivation of human fetuses is associated with a delay in the functional maturation of fetal sensory receptors.

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