Select a Community
Are you sure you want to trigger topic in your Anconeus AI algorithm?
You are done for today with this topic.
Would you like to start learning session with this topic items scheduled for future?
Epidural analgesia
13%
10/76
Cord compression
47%
36/76
Vasa previa
1%
1/76
Fetal head compression
11%
8/76
Uteroplacental insufficiency
26%
20/76
Select Answer to see Preferred Response
The fetal heart tracing reveals variable decelerations in this post-term woman following an amniotomy. Variable decelerations are most likely due to umbilical cord compression. Variable decelerations are nonreassuring fetal heart patterns. They fall and rise abruptly (< 30 seconds) with the onset and relief of cord compression, unlike the gradual fall and rise of early and late decelerations. A vaginal examination may identify a prolapsed cord (which may cause variable decelerations), bradycardia, or both as the cord is compressed. Initial management includes repositioning the patient into a knee to chest position and possible amnioinfusion to minimize cord compression. Figure A shows an example of variable decelerations. The decelerations are thought to be from the cord occlusion causing decreased oxygen tension and fetal hypertension, while the accelerations are baroreceptor-mediated reflexes from decreased venous return. Incorrect Answers: Answer 1: Epidural analgesia can cause fetal heart rate variability for a transient period of time, but it does not cause sustained variable decelerations. Answer 3: Vasa previa is associated with bradycardia and late decelerations. Answer 4: Fetal head compressions are associated with early decelerations but not sustained variable decelerations. Answer 5: Uteroplacental insufficiency is associated with late decelerations. Bullet Summary: Variable decelerations are reflex mechanisms caused by umbilical cord compression.
5.0
(6)
Please Login to add comment