class 3: different EFM readings and what they mean Flashcards
what is a good variability
6-25 BPM range
go through repetitive and recurrent decelerations
what is minimal/decreased variability
under or equal to 5bpm
what is marked variability
over 25 bpm
what are some things that cause minimal/absent variability
hypoxemia and acidemia
what is sinusoidal pattern and what does it look like
even swoops
associated with severe fetal anemia due to previa or abruption
what is an episodic change in FHR
changes not associate with contraction
what are the characteristics of an acceleration
- should be at least 15bpm above baseline
last for 15s to 2 mins
what is early deceleration (what does it look like)
deceleration and contraction directly mirror each other
what does an early deceleration mean
result of pressure on the head stimulating vagus nerve
what is a late deceleration
deceleration starts and nadir of contraction
what does a late deceleration mean
fetus cant breathe during contraction
what does variable deceleration mean
acord compression
what does variable deceleration look like
spikes down lasting awhile
how long do prolonged decelerations last for
2-10 mins