Does oxytocin cause variable decelerations?
When uterine hypertonus developed during oxytocin infusion 50 per cent of fetuses, including 5 of 7 fetuses subjected to tetanic contrac- tions, developed late decelerations. Most fetuses who developed late decelerations had normal heart rate patterns before treatment.
Does oxytocin cause fetal decelerations?
The oxytocin infusion stimulated strong and frequent fetal movements which caused the fetal grip on umbilical cord to release and FHR decelerations to disappear. Induced labor progressed rapidly and within 5 h a healthy term infant was delivered.
What interventions do you do for variable decelerations?
Nursing interventions for treatment of variable decelerations are aimed at reducing umbilical cord or fetal head compression and include changing maternal position to relieve pressure on the umbilical cord, administering an IV fluid bolus which may improve blood volume and profusion and possibly improve fetal heart …
Does oxytocin cause decreased variability?
Interval index describing the long term component of FHR variability did not change significantly during the experiment. The differential index describing the short term variability had an almost significant decreasing trend when the dose of oxytocin exceeded six mU/min.
What can cause variable decelerations?
Common causes of variable decelerations include vagal reflex triggered by head compression during pushing and cord compression such as that caused by short cord, nuchal cord, body entanglement, prolapsed cord, decreased amniotic fluid, and fetal descent.
How does oxytocin affect fetal heart rate?
The most important side effect of oxytocin infusion is uterine hyper-stimulation, which has been shown to occur in more than 30% of women induced with oxytocin [4, 5]. By causing uterine hyper-stimulation, oxytocin may lead to or aggravate an abnormal fetal heart rate, contributing to neonatal acidosis.
What does variable deceleration mean?
Variable decelerations are irregular, often jagged dips in the fetal heart rate that look more dramatic than late decelerations. Variable decelerations happen when the baby’s umbilical cord is temporarily compressed. This happens during most labors.
What are complicated variable decelerations?
Complicated variable decelerations may be indicative of fetal hypoxia. Decelerations occurring in the context of baseline bradycardia. Decelerations that drop ≤70bpm or last for ≥60 seconds. Page 8. Variable decelerations occurring in the context of Overshoots following the variable deceleration.
What does a late deceleration mean?
Late deceleration is defined as a visually apparent, gradual decrease in the fetal heart rate typically following the uterine contraction. The gradual decrease is defined as, from onset to nadir taking 30 seconds or more.
What category is variable deceleration in?
Variable decelerations may be classified according to their depth and duration as mild, when the depth is above 80 bpm and the duration is less than 30 seconds; moderate, when the depth is between 70 and 80 bpm and the duration is between 30 and 60 seconds; and severe, when the depth is below 70 bpm and the duration is …