The nonstress test. A preliminary report of a graded classification.
A series of 1,504 antenatal fetal heart rate studies (nonstress tests) in 525 high-risk patients was performed. Accelerations with fetal activity are important. A graded classification of heart rate reactivity was used. There were no antenatal fetal deaths with a reactive pattern. In addition, there was an increasing incidence of intrapartum fetal distress with decreasing fetal cardiac reactivity.
D005260:Female; D005316:Fetal Distress / Q000145:classification* / Q000175:diagnosis; D005318:Fetal Heart / Q000503:physiopathology*; D005323:Fetal Monitoring / Q000379:methods*; D006339:Heart Rate; D006801:Humans; D011247:Pregnancy; D011379:Prognosis; D012306:Risk