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1

Which is the best predictor of successful vaginal birth?

Descent of the presenting part during labor

2

A 30 year old primigravid patient at term progresses from 4cm dilation to 7 cm in 5 hours. How would this labor be described?

A protraction disorder

3

A 22 year old multiparous patient has been pushing for 2 hours resulting in no descent of the presenting part. This would be classified as

An arrest disorder

4

Which of the following maternal factors can prevent accurate clinical assessment of uterine contractions?

Obesity

5

For a patient in active labor, which of the following provides a quantitative measurement of the strength of her uterine contractions

Intrauterine pressure catheter

6

Which of the following presentations typically converts to either a vertex or brow presentation?

Compound

7

Normal fetal heart rate variability is characterized by an amplitude range that is

6-25 bpm

8

Marked fetal heart rate variability is characterized by an amplitude range that is

> 25 bpm

9

Which of the following presentations usually resolves spontaneously as labor continues?

Compound

10

A 22 year old G1P0 patient presents at term with complaints of contractions for many hours. Her cervix is 100% effaced and is dilated to 3 cm. In a nulliparous patient, the latent phase of labor is defined as prolonged if it lasts longer than

20 hours

11

A 37 year old G4P3 patient reports having contractions “all day”. In Multiparous paitients, the latent phase is defined as prolonged if it lasts more than

14 hours

12

A 30 year old G2P1 at term is in adequate active labor with cervical dilation unchanged at 6cm as documented by several examiners. There has been secondary arrest of dilation when cervical dilation during the active phase of labor stops for at least

2 hours

13

Which of the following is the appropriate management of a prolonged latent phase?

Sedation

14

Which of the following is a selection criterion that would allow for the external cephalic version?

Normal fetus with reassuring fetal heart tracing

15

Outlet forceps-assisted vaginal delivery is appropriately considered with fetal head at what station?

at the pelvic floor

16

Low forceps assisted vaginal delivery occurs with the fetal head at what station?

At the 2+ station

17

A patient has been in the second stage of labor for 2.5 hours. Fetal heart tones are reassuring and there is no clinical evidence of cephalopelvic disproportion. The next step in management of this patient should be

Oxytocin administration if uterine contractions are inadequate

18

Vibroacoustic stimulation is used to elicit what type of fetal heart rate response?

Acceleration

19

Amnioinfusion to relieve umbilical cord compression is useful in cases of

Variable fetal heart rate deceleration

20

If a fetus experiences progressive and sustained hypoxia, the mixed metabolic and respiratory acidosis that may ensue typically results from

Anaerobic glycolysis

21

In high risk patients, intermittent fetal heart rate auscultation to monitor fetal well being should be employed at least how often during the active phase of labor?

Every 15 minutes

22

In high risk patients, intermittent fetal heart rate auscultation to monitor fetal well being should be employed at least how often during the second stage of labor?

Every 5 minutes

23

Baseline fetal tachycardia is defined as a heart rate greater than how many beats per minute?

160

24

The most common cause of fetal tachycardia

Chorioaminionitis

25

Baseline fetal bradycardia is defined as a heart rate less than how many beats per minute?

110

26

A fetal heart rate below how many beats per minute is an ominous sign that may presage fetal death?

80

27

Fetal heart accelerations associated with

Reassuring fetal status

28

Early fetal heart rate decelerations are associated with

Pressure on the fetal head

29

Variable fetal heart rate decelerations are associated with

Umbilical cord compression

30

Late fetal heart rate decelerations are associated with

Uteroplacental insufficiency