Health / Medical Topics |
Variable Fetal Heart Rate Deceleration
An abrupt decrease in the fetal heart rate below baseline that lasts 15 seconds to two minutes. The decrease from baseline fetal heart rate is greater than or equal to 15 beats per minutes, and the time from onset to nadir of the deceleration is less than 30 seconds. Variable fetal heart rate decelerations that are associated with successive uterine contractions commonly have varying onsets, depths, and durations. (NCI Thesaurus)
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