baseline variability

Fluctations in the fetal heart rate, recorded by the electronic monitor, that reflect the status of the fetal autonomic nervous system. Absence of short-term variability (beat-to-beat changes) is a sign of fetal compromise. Long-term variability (wavelike undulations) occurs normally three to five times per minute. Increased long-term variability is common during fetal sleep but may reflect prematurity, congenital abnormalities such as anencephaly, or fetal response to drugs. See also: variability

单词	baseline variability
释义	DictionarySeevariability baseline variability baseline variability Fluctations in the fetal heart rate, recorded by the electronic monitor, that reflect the status of the fetal autonomic nervous system. Absence of short-term variability (beat-to-beat changes) is a sign of fetal compromise. Long-term variability (wavelike undulations) occurs normally three to five times per minute. Increased long-term variability is common during fetal sleep but may reflect prematurity, congenital abnormalities such as anencephaly, or fetal response to drugs. See also: variability
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