Asked by: Ahmida Narsimedical health heart and cardiovascular diseases
What does marked fetal heart rate variability mean?
Last Updated: 16th May, 2020
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Correspondingly, what is marked fetal heart rate variability?
Marked variability in FHR patterns was defined as fluctuations in FHR amplitude of >25 beats per minute based on 10-min epochs, excluding accelerations and decelerations from baseline.
Additionally, what is decreased variability in fetal heart rate? Among the disorders associated with decreased FHR variability during labor are fetal asphyxia and acidosis and subsequent distress in the newborn. Among the factors that influence FHR variability are maternal fever, fetal immaturity, so-called fetal sleep, fetal tachycardia, and drug administration to the mother.
Also question is, what is marked variability?
(peak to trough). Marked variability is defined by a fluctu- ation grade greater than 25 beats from peak to trough, and. has been used to describe FHR patterns since the early use. of fetal ECG in the 1970s.
What causes decreased variability?
VI. Causes of decreased FHT Variability
- Normal causes. Fetal sleep cycle (usually lasts 20-40 minutes) Extreme prematurity. Narcotics.
- Fetal Hypoxia or Metabolic Acidosis. Especially concerning if other findings of distress. Late Decelerations.
- Other abnormal causes. Fetal neurologic anomalies (Anencephaly) Chorioamnionitis.