CEFM Practice Test | Questions and Answers (Passed)

CEFM Practice Test | Questions and Answers (Passed) What is the NICHD definition of absent variability? - ansAmplitude range undetectable. What is the NICHD definition of minimal variability? - ansAmplitude range visually detectable but ≤5 bpm. (Greater than undetectable but ≤5 bpm) What is the NICHD definition of moderate variability? - ansAmplitude range 6-25 bpm. What is the NICHD definition of marked variability? - ansAmplitude range 25 bpm. What is the NICHD definition of an acceleartion? - ansVisually apparent abrupt increase in FHR. Abrupt increase is defined as an increase from onset of acceleration to peak is 30 seconds. Peak must be ≥15 bpm, must last ≥15 seconds, but 2 minutes from the onset to return. Before 32 weeks of gestation, accelerations are defined as having a peak ≥10 bpm and duration of ≥10 seconds. What is the NICHD definition of a prolonged acceleration? - ansAcceleration ≥2 minutes but 10 minutes in duration. Acceleration lasting ≥10 minutes is defined as a baseline change. What is the NICHD definition of an early deceleration? - ansVisually apparent, usually symmetrical, gradual decrease and return of FHR associated with a uterine contraction. The gradual FHR decrease is defined as one from the onset to FHR nadir of ≥30 seconds. The decrease in FHR is calculated from onset to nadir of deceleration. The nadir of the deceleration occurs at the same time as the peak of the contraction. In most cases, the onset, nadir, and recovery of the deceleration are coincident with the beginning, peak, and ending of the contraction, respectively. What is the NICHD definition of a late deceleration? - ansVisually apparent, usually symmetrical, gradual decrease and return of FHR associated with a uterine contraction. The gradual FHR decrease is defined as from the onset to FHR nadir of ≥30 seconds. The decrease in FHR is calculated from onset to the nadir of deceleration. The deceleration is delayed in timing, with nadir of the deceleration occurring after the peak of the contraction. In most cases, the onset, nadir, and recovery of the deceleration occur after the beginning, peak, and ending of the contraction, respectively. What is the NICHD definition of a variable deceleration? - ansVisually apparent abrupt decrease in FHR. An abrupt FHR decrease is defined as from the onset of the deceleration to the beginning of the FHR nadir of 30 seconds. The decrease in FHR is calculated from the onset to the nadir of deceleration. The decrease in FHR is ≥15 bpm, lasting ≥15 seconds, and 2 minutes in duration. When variable decelerations are associated with uterine contractions, their onset, depth, and duration commonly vary with successive uterine contractions. Variable decelerations have a depth criteria; they must drop at least 15 or more bpm to be considered a variable deceleration. How do corticosteroids influence FHR? - ansDecrease in FHR variability with betamethasone, but not dexamethasone How does magnesium sulfate influence FHR? - ansDecrease in FHR variability, clinically insignificant decrease in baseline rate; inhibition of increasing accelerations as gestational age advances How does terbutaline influence FHR? - ansIncrease in baseline rate How does zidovudine influence FHR? - ansNo change How does prematurity influence FHR? - ansHigher baseline rate than term fetus, less variability than term fetus, less frequency and amplitude of accelerations than term fetus How does a sleep cycle influence FHR? - ansMinimal variability, reduced frequency and amplitude of accelerations How does sponatneous fetal movement influence FHR? - ansAccelerations How does scalp or vibracoustic stimulation influence FHR? - ansAccelerations How does vaginal examination influence FHR? - ansAccelerations The purpose of the autocorrelation in external monitoring is to a. Compare incoming waveforms for comparison b. Decrease signal to noise levels c. Distinguish fetal from maternal heart rate - ansa. Compare incoming waveforms for comparison The area of maximum intensity of FHR is usually the fetal a. Back b. Chest c. Umbilicus - ansa. Back Palpating the uterus is best performed by using the a. Back of hand b. Fingertips c. Palm - ansB. Fingertips What is the most sensitive method of assessing uterine activity? a. Intrauterine pressure catheter b. Manual palpation c. Maternal perception - ansa. Intrauterine pressure catheter When educating the patient about fetal monitoring, the most appropriate statement is a. A normal tracing indicates that your baby is well-oxygenated b. A normal tracing indicates that you have a healthy baby c. Continuous fetal monitoring will insure a better outcome for your baby - ansa. A normal tracing indicates that your baby is well-oxygenated How does maternal fever influence FHR? - ansIncrease in baseline rate, minimal variability How does intraamniotic infection/ chorioamnionitis influence FHR? - ansIncrease in baseline rate, minimal variability How does maternal hyperthyroidism influence FHR? - ansTachycardia A patient receiving oxytocin has 17 ctx in 30 minutes, according to the NICHD guidelines this is called a. Hyperstimulation b. Hypertonus c. Tachysystole - ansc. Tachysystole Maternal supine hypotension is caused mainly by compression of the a. Inferior vena cava b. Spiral arteries c. Uterine vessels - ansa. Inferior vena cava Which factor influences blood flow to the uterus? a. Fetal arterial pressure b. Intervillous space flow c. Maternal arterial vasoconstriction - ansc. Maternal arterial vasoconstriction