Antepartum fetal heart rate testing. IV. The nonstress test as a primary approach.
During a 1 year period from July 1, 1977, to June 30, 1978, 1,877 NST's were performed in 895 patients. Criterion for a reactive test was two accelerations associated with fetal movement in one of two 20 minute periods. Fetuses with nonreactive patterns were stimulated by abdominal wall manipulation. A total of 1,644 tests demonstrated reactive patterns and 229 tests were NR; 146 NR's were followed by CST's. During 75 CST's, the pattern became reactive and the test was terminated. Seventeen of 71 completed CST's were abnormal (24%). There were 634 patients delivered within 1 week of an NST-CST. Seventeen of 62 patients with NR tests underwent cesarean section for fetal distress as compared to 11 of 572 patients with reactive patterns.
D000009:Abdominal Muscles; D002585:Cesarean Section; D036861:Delivery, Obstetric / Q000379:methods; D004562:Electrocardiography; D005260:Female; D005313:Fetal Death / Q000175:diagnosis; D005316:Fetal Distress / Q000175:diagnosis; D005318:Fetal Heart / Q000503:physiopathology*; D005323:Fetal Monitoring; D005333:Fetus / Q000502:physiology; D006339:Heart Rate; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D009068:Movement; D010701:Phonocardiography; D010812:Physical Stimulation; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011312:Pressure; D014463:Ultrasonography; D014590:Uterine Contraction