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48 Cards in this Set

  • Front
  • Back
Nonreassuring fetal status during labor occurs in approximately what percent of pregnancies?
5 - 10%
Which of the following is NOT a criterion suggestive of fetal asphyxia
Heart rate acceleration NOT criterion for fetal asphyxia (criterion suggestive of fetal asphyxia: metabolic or mixed acidemia, persistent Apgar scores of 3 or below, and evidence of neonatal neurologic sequele)
If a fetus experiences progressive and sustained hypoxia, the mixed metabolic and respiratory acidosis that may ensue typically results from
anaerobic glycolysis
The 1-minute Apgar for a newborn with a heart rate of less than 100, slow respiratory rate, flaccid muscle tone, a grimace, and blue color is
3
The 1-minute Apgar for a newborn with a heart rate of more than 100, good respiratory effort, active muscular activity, a good grimace, and pink color is
9
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
Intermittent fetal heart rate auscultation to monitor fetal well-being should be employed at least how often in the second stage of labor?
Every 5 minutes
Baseline fetal tachycardia is defined as a heart rate greater than how many beats per minute?
160
The common cause of fetal tachycardia is
maternal hyperthermia
Baseline fetal bradycardia is defined as a heart rate of less than how many beats per minute?
120
A sinusoidal fetal heart rate pattern is frequently associated with
Rh isoimmunization
Fetal arrhythmias are seen in what percent of monitored labors?
Less than 1%
During fetal sleep, the fetal heart rate variability is
decreased
Which of the following was considered characteristic of the old term shortterm variability?
all of the above (variation in amplitude seen on a beat-to-beat basis, amplitude of 3 to 8 bpm, normally encountered after approximately 28 weeks' gestation)
The term "long-term fetal heart rate variability" was associated with an amplitude of
5 to 16 bpm
Accelerations of the fetal heart rate (FHR) are defined as an increase in the FHR above the baseline of at least how many bpm, usually of 15- to 20-second duration?
15 bpm
Accelerations of the FHR are associated with an intact fetal mechanism that is
unstressed by hypoxia and acidemia
If an observed FHR pattern is a mixture of two more patterns and variations of baseline values, it is usually prudent to manage the obstetric situation based on
the most substantially nonreassuring pattern
Fetal tachycardia is associated with all of the following EXCEPT
maternal treatment with beta-blockers - not associated with fetal tachy (fetal tachycardia is associated with maternal fever and infection, fetal immaturity, and fetal hypoxia)
Which of the following is a cause of fetal tachycardia?
all of the above (maternal thyrotoxicosis, fetal anemia, and fetal infection)
All of the following are associated with fetal bradycardia EXCEPT
maternal treatment with atropine - not related to fetal brady (fetal bradycardia is associated with maternal tx with beta-blockers, fetal anoxia, and fetal congenital heart block)
Early FHR decelerations are associated with
pressure on the fetal head
Variable FHR decelerations are associated with
umbilical cord compressions
Late FHR decelerations are associated with
uteroplacental insufficiency
The presence of persistent late decelerations and decreased beat-to-beat variability should lead to which of the following?
Direct measurement of fetal acid-base status
Which of the following best describes a late FHR deceleration?
Deceleration starts after uterine contraction begins, reaches nadir after peak of uterine contraction, resolves to baseline after uterine contraction is over
Repetitive late FHR decelerations are considered particularly ominous with respect to fetal well-being if associated with
decreased FHR variability
In the face of evidence of intrauterine fetal compromise, which drug may relax uterine tone and slow contraction rate?
Terbutaline
The single most reliable indicator of fetal status using electronic fetal monitoring is
variability
Uteroplacental insufficiency should be suspected in the presence of
all of the above (maternal hypertension, diabetes mellitus, toxemia)
A normal fetal scalp blood gas pH is in the range of
7.25 to 7.40
Fetal compromise is strongly expected with a scalp pH less than
7.20
Which of the following patterns of FHR is most ominous?
late decelerations with loss of variability
Transient loss of fetal sino-atrial node function is noted when the FHR falls below
60
Which of the following is likely to result from acute intrapartum blood flow disruption?
Spastic quadriplegia
What is the association between neonatal encephlopathy and permanet neonatal neurologic impairment?
They are not always associated
What is the incidence of neonatal encephalopathy caused by intrapartum hypoxia (absent other coincident preconceptual or antepartum abnormalities)?
1.6/100,000
A fetal scalp pH of 7.24 is
reassuring
Which of the following medications would be most useful in an attempted intrauterine resuscitation?
terbutaline
Which of the following maneuvers is potentially useful in an attempt to resuscitate the fetus in utero?
change the maternal position to left lateral
Moderate variability is best characterized by an amplitude range that is
6 to 25 bpm
Marked variability is best characterized by an amplitude range that is
>25 bpm
Minimal variability is best characterized by an amplitude range that is
detectable but at 5 bpm or less
Absent variability is best characterized by an amplitude range that is
undetectable
Accelerations are considered to be present at or after 32 weeks of gestation when an acceleration has an acme of
15 bpm and a duration of >15 seconds but <2 minutes
Accelerations are considered to be present before 32 weeks of gestation when an acceleration has an acme of
10 bpm and a duration of >15 seconds but <2 minutes
Fetal heart decelerations are defined as
visually apparent and gradual
Early FHR decelerations are considered
physiologic and not a cause for concern