SIM Lab Quiz 2

Question 1

Stage 1 Labor definition

Answer 1

begins with onset of labor and ends with complete cervical dilation (10 cm)

Question 2

latent phase characteristics

Answer 2

0-3 cm
0-40% effacement
length: 6-24 hrs

contractions:
every 5-30 min
strength: mild to moderate
duration: 30-45 s
pattern: irregular

show amount and color: scant; mucoid, blood-tinged

descent of fetus:

nullipara: 0 station
multipara: -3-0

mother excited, talkative, pain well-controlled, follows directions

Question 3

active phase characteristics

Answer 3

4-7cm
40-80% effacement
length: 3-6 hrs

contractions:
every 2-5 min
strength: mod. to strong
duration: 45-70 s
pattern: regular

show: scant to moderate, mucoid, bloody

descent of fetus:

nullipara: -2 to 0/+1/+2
multipara: -2 to +1/+2

mother is serious and inner-directed; doubtful of ability to control pain; desiring companionship and encouragement; difficulty following directions

Question 4

baseline FHR

Answer 4

mean FHR rounded to increments of 5 bpm during 10min window, excluding accelerations and decelerations

Question 5

baseline variability

Answer 5

fluctuations in the baseline FHR that are irregular in amplitude and frequency

reflects interaction between fetal sympathetic and parasympathetic nervous system

Question 6

fluctuations in baseline FHR

Answer 6

visually quantified as amplitude of peak to trough in bpm within 10min window, excluding accels and decels.

Question 7

absent fluctuation in baseline FHR

Answer 7

amplitude range is undetectable

Question 8

minimal fluctuation in baseline FHR

Answer 8

amplitude range is visually undetectable

Question 9

moderate fluctuation in baseline FHR

Answer 9

amplitude from peak to trough 6bpm to 25bpm

Question 10

marked fluctuation in baseline FHR

Answer 10

amplitude range >25 bpm

Question 11

accelerations

Answer 11

visually apparent, abrupt increase in FHR above baseline. Peak of acceleration is >15bpm over baseline FHR for >15 seconds and

Question 12

accelerations before 32 wks gestation

Answer 12

> 10 beats over baseline FHR for >10 s

Question 13

prolonged accelerations

Answer 13

> 2 min but

Question 14

deceleration

Answer 14

transitory decrease in FHR from baseline

Question 15

early deceleration

Answer 15

visually apparent gradual decrease in FHR below baseline. nadir (lowest point) of deceleration occurs at same time as peak of UC.

in most cases, onset, nadir, and recovery of deceleration are coincident or mirror contraction

Question 16

variable deceleration

Answer 16

visually apparent abrupt decrease in FHR below baseline

decrease in FHR is >15 bpm lasting >15 s and

Question 17

late deceleration

Answer 17

visually apparent gradual decrease of FHR below baseline

nadir occurs after peak of contraction. onset, nadir, and recovery of deceleration occur after respective onset, peak, and end of UC

Question 18

prolonged deceleration

Answer 18

visually apparent abrupt decrease in FHR below baseline that is >15bpm lasting >2 min but

Question 19

sinusoidal pattern

Answer 19

visually apparent smooth sine-like undulating pattern in FHR baseline with cycle frequency of 3-5 min that persist for > 20 min

Question 20

tachycardia

Answer 20

baseline FHR >160bpm lasting 10 min or longer

Question 21

bradycardia

Answer 21

baseline FHR of

Question 22

normal FHR

Answer 22

reflects favorable physiological response to maternal fetal environment

Question 23

abnormal FHR

Answer 23

reflects an unfavorable physiological response to maternal fetal environment

Question 24

external electronic fetal and uterine monitoring

Answer 24

ultrasound device to detect FHR and a pressure device to assess uterine activity

FHR measured via ultrasound transducer (baseline, variability, accels, decels)

contractions measured via tocodynamometer (relative freq of UCs and relative resting tone, NOT pressure/intensity (estimated via palpation))