QUIZ 2 Flashcards
baseline FHR
- read over 10 mins
- 110 < FHR < 160
bradycardia FHR
baseline < 110 bpm
tachycardia FHR
baseline > 160 bpm
absent variability
undetectable
minimal variability
≤ 5 bpm
moderate variability
6-25 bpm
marked variability
> 25 bpm
sinusoidal pattern
- smooth, sine wave
- cycle frequency of 3-5 min
- lasts 20 mins
- is NOT variability
abrupt change
onset to nadir < 30 sec
gradual change
onset to nadir ≥ 30 sec
acceleration (≥32wks)
- abrupt increase ≥ 15 bpm
- 15 sec ≤ duration < 2 min
acceleration (<32wks)
- abrupt increase ≥10 bpm
- 10 sec ≤ duration < 2 min
prolonged acceleration
2 min ≤ duration < 10 min
early deceleration
onset, nadir, offset coincide w/ contraction
gradual
late deceleration
- nadir of FHR occurs after peak of contraction
- offset of FHR occurs after end of contraction
- gradual*
variable deceleration
- abrupt* decrease in FHR ≥15 bpm
- 15 sec ≤ duration < 2 min
- may vary in onset, depth, and duration when associated w/ contraction
prolonged deceleration
2 min ≤ duration < 10 min
abrupt or gradual
recurrent decelerations
occur w/ ≥50% of contractions in 20 mins
intermittent decelerations
occur w/ <50% of contractions in 20 mins
periodic patterns
FHR patterns associated w/ contractions –> abrupt or gradual onset
episodic patterns
FHR patterns not associated w/ contractions
Category I
- baseline FHR 110-160 bpm
- moderate variability
- NO late/variable decelerations
- +/- early decelerations
- +/- accelerations
Category II
- baseline FHR: brady w/ variability OR tachy
- variability: minimal OR absent w/out recurrent decels OR marked absent
- accelerations: NONE w/ stimulation
Category III
- baseline FHR: ABSENT
- recurrent late/variable decels
- brady cardia
- sinusoidal
normal uterine activity
≤ 5 contractions in 10 mins
tachysystole
> 5 contractions in 10 mins - always check for decels
