AWHONN Intermediate Fetal Monitoring TEST Which of the following is an extrinsic influence on the FHR? - correct answer C. Fetal-placental circulation The most highly oxygenated blood in fetal circulation is carried by: - correct answer C. Ductus venosus If fetal arterial pressure begins to fall below normal levels: - correct answer A. Baroreceptors cause vasoconstriction and increase the FHR Fetal heart rate variability is defined as fluctuations in the baseline that are irregular in _____ and _____. - correct answer B. Amplitude and frequency An increase in the fetal heart rate immediately preceding a variable deceleration is caused by: - correct answer A. Occlusion of the umbilical vein When assessing a FHR tracing, the first step is to: - correct answer C. Establish the baseline rate Which deceleration in the FHR is considered benign and does not require an intervention to correct? - correct answer A. Early deceleration If the umbilical vein is the only vessel occluded during cord compression - correct answer B. Oxygenated blood may be restricted from being delivered to the fetus During a fetal sleep cycle, FHR variability is usually ____. - correct answer C. Minimal Uterine tachysystole is defined as: - correct answer B. >5 contractions in 10 mind over 30 minutes 1 / 2
Maternal-fetal oxygen and nutrient transfer takes place in the: - correct answer B. intervillous space During a contraction, the tocodynamometer detects: - correct answer A. Pressure created by tensing of uterine muscle
Normal fetal heart rate baseline is: - correct answer C. 110-160 bpm
Following birth, a fetal cord blood sample is taken. The results are:
pH: 6.95
pCO2: 86 mmHg
pO2: 4mmHg
BE: -18.6 mEq/L
These results are best interpreted as: - correct answer C. Mixed acidemia
A characteristic of variable decelerations is: - correct answer B. The onset of the deceleration is abrupt Stimulation of the vagus nerve in a healthy fetus will cause: - correct answer A. A decrease in the fetal heart rate What is the baseline rate? - correct answer B. 145 bpm What is the correct interpretation? - correct answer B. Baseline of 160 bpm with recurrent late decelerations What is the primary physiologic goal? - correct answer B. Maximize oxygenation Based on the tracing, the most appropriate interventions are: - correct answer B. Decrease oxytocin from 14 to 7 mU/min and start a 500-mL IVFB.
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