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Presence of late decelerations with fewer than 50% of contractions or significant variable decelerations. Requires repeat testing on following day. [1] Equivocal—Tachysystole: Presence of contractions that occur more frequently than every 2 minutes or last longer than 90 seconds in the presence of late decelerations.
A 'gradual' deceleration has a time from onset to nadir of 30 seconds or more. Early decelerations begin and end at approximately the same time as contractions, and the low point of the fetal heart rate occurs at the peak of the contraction. [7] Late decelerations: a result of placental insufficiency, which can result in fetal distress ...
The term is also sometimes used to designate late decelerations of fetal heart rate as measured by cardiotocography or an NST, even if there is no other evidence of reduced blood flow to the placenta, normal uterine blood flow rate being 600mL/min.
The late phase is dependent upon atrial contraction and is therefore absent in patients with atrial fibrillation due to the lack of forceful atrial contraction, making the E/A ratio very large. [citation needed] The E/A ratio is a first generation test for diastolic performance of the heart. [citation needed]
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late decelerations; Biochemical signs, assessed by collecting a small sample of baby's blood from a scalp prick through the open cervix in labor fetal metabolic acidosis; elevated fetal blood lactate levels (from fetal scalp blood testing) indicating the baby has a lactic acidosis
On a "core" basis, which eliminates the more volatile costs of food and gas, the December Consumer Price Index (CPI) climbed 0.2% over the prior month, a deceleration from November's 0.3% monthly ...
Beavers are perfectly adapted for life in water and even have webbed rear feet. They have two thick, oily coats of fur to keep them warm and dry and both their ears and nostrils are valvular.