late deceleration


Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to late deceleration: variable deceleration

deceleration

 [de-sel″ĕ-ra´shun]
the sudden stopping of movement, a frequent mechanism of motion injury. Common causes of deceleration injury are motor vehicle accidents and falls.
early deceleration in fetal heart rate monitoring, a transient decrease in heart rate that coincides with the onset of a uterine contraction.
late deceleration in fetal heart rate monitoring, a transient decrease in heart rate occurring at or after the peak of a uterine contraction and resulting from fetal hypoxia.
variable d's in fetal heart rate monitoring, a transient series of decelerations in heart rate that vary in duration, intensity, and relation to uterine contractions; they are abrupt in onset and cessation and result from vagus nerve firing in response to stimuli such as umbilical cord compression in the first stage of labor.

late de·cel·er·a·tion

any transient fetal bradycardia, with onset of deceleration at the peak of the uterine contraction and nadir as contraction finishes; may represent uteroplacental insufficiency.
References in periodicals archive ?
01 (*)As manifested by fetal bradycardia, variable, or late decelerations.
Abnormal- FHR >180 or <100 bpm: variability <5 for >90 minutes: Non-reassuring variable decelerations still observed 30 minutes after starting conservative measures and occurring with over 50% of contractions or late decelerations present for over 30 minutes that does not improve with conservative measures and occurring with over 50% of contractions or bradycardia or a single prolonged deceleration lasting 3 minutes or more.
Second, recurrent late decelerations are not categorized as abnormal unless the baseline variability drops from minimal to absent.
We all know that persistent or recurrent late decelerations can be a sign of fetal hypoxia.
An hour later, after vaginal bleeding increased and late decelerations were noted on the fetal heart monitor, cesarean delivery was performed.
Baird emphasized that "there is no place" for uterine hyperstimulation when a woman is experiencing persistent variable decelerations or persistent late decelerations.
3) Of that subset of subjects, the late decelerations resolved in approximately 20% when they were moved from a supine to a lateral position.
Repetitive late decelerations on fetal heart rate monitoring (31%) and malpresentation (24%) were the two most common indications among the older women.
Neuraxial analgesia (spinal or epidural anesthesia) is associated with an increased risk of late decelerations, although it's not dear if this is clinically significant, added Dr.
Four hours later, oxytocin was started because of decreased variability in the fetal monitoring with some late decelerations.
In this analysis, only two types of abnormal fetal heart rate patterns proved significantly related to the development of moderate or severe cerebral palsy: multiple late decelerations (odds ratio 3.

Full browser ?