NCC EFM Exam Practice Questions with correct answers

NCC EFM Exam Practice Questions Oxygen is transferred from mom to fetus via the placenta through? - correct answer Passive (Simple) Diffusion Intervillous space perfusion is dependent on? - correct answer Adequate Uterine Blood Flow Maternal Fetal Exchange is best promoted by which maternal position? - correct answer Either Rt or Lt Lateral What is transfer down the concentration gradient from higher to lower called? - correct answer Diffusion The most likely physical rationale for recurrent late decels after epidural is? - correct answer Maternal Sympathetic Blockade Which FHR pattern would be anticipated when monitoring mono-mono twins? - correct answer Variable Decels Fetus can survive in an environment w/ a PO2 equal to adult venous blood d/t? - correct answer increased O2 carrying capacity Variable decels are mediated primarily by? - correct answer baroreceptors The sympathetic branch of the ANS influences FHR to? - correct answer increase the average difference in baseline FHR b/w 30 & 40 weeks is? - correct answer 10bpm usually 5-6; 10 is closest Fetal blood is most highly oxygenated in the? - correct answer Ductus Venosous An abrupt rise in fetal bp can stimulate? - correct answer variable decels During an acute episode of fetal hypoxemia, fetal blood flow is redistributed primarily to the? - correct answer brain Over the course of pregnancy, the FHR baseline? - correct answer decreases FHR variability is dependent upon? - correct answer cerebral oxygen and intact CNS chemoreceptors respond mainly to? - correct answer hypoxemia pH: 7.22 pCO2: 50 HCO3: 24 BE: -3 - correct answer normal acid-base status (if pH is normal, answer is normal) Fetal respiratory academia is indicated by a pH of 7.04 and a PCO2 of? - correct answer 60 pH: 6.98 PCO2: 49 HCO3: 16 BE:-16 - correct answer metabolic acidemia pH: 7.04 pCO2: 80 HCO3: 22 BE: -4 - correct answer respiratory acidemia Fetal metabolic acidemia is indicated by an umbilical artery cord blood gas pH of 6.94 & BE of? - correct answer -12 Decels that occur with 50% ctx: - correct answer intermittent An acceleration of FHR that is elicited during fetal scalp stim indicates a fetal pH of at least? - correct answer 7.19 FHR characteristic most predictive of a vigorous baby at birth is? - correct answer variability EFM tracing w/ absent variability and recurrent late decels would be categorized as? - correct answer abnormal (cat 3) likely cause of fetal tachy w/ moderate variability in a term fetus? - correct answer maternal fever FHR pattern likely to develop w/severe fetal anemia? - correct answer sinusoidal marked variability is mediated by? - correct answer adrenergic activity during 1st stage of labor for women w/ no risk factors, efm should be reviewed every? - correct answer 30 min. during 1st stage of labor for women w/complications, EFM should be reviewed every? - correct answer 15 min. during 2nd stage labor for women requiring oxytocin, EFM should be reviewed every? - correct answer 5 min. in any 10 minute sequence of FHR tracing, minimum baseline duration must be at least? - correct answer 2 min. if baseline FHR is indeterminate, refer to prior? - correct answer 10 min. window Baseline FHR variability is classified as? - correct answer absent, minimal, moderate, marked primary goal in treatment of late decels? - correct answer maximize uteroplacentel blood flow Rationale for low dose oxytocin protocol? - correct answer half-life of oxytocin Initiate treatment for recurrent late decels w/ moderate variability during 1st stage? - correct answer maternal repositioning FHR pattern likely to develop w/ severe fetal anemia? - correct answer sinusoidal most consistent clinical sign of uterine rupture during tolac? - correct answer recurrent decels of bradycardia loss of FHR variability can result from? - correct answer medication administration IV stadol may result in? - correct answer transient sinusoidal (pseudosinusoidal) When using a doppler to determine FHR, autocorrelation: - correct answer compares successive reflective US waveforms at many points Sustained SVT increases fetal risk for: - correct answer CHF (hydrops) toco detects changes in? - correct answer the shape of the uterine wall fetoscope works by detecting? - correct answer sound of opening/closing of heart valves short r-to-r intervals in fetal egg is indicative of? - correct answer tachycardia most common fetal arrhythmia? - correct answer PAC Fetal hydrops may develop w? - correct answer paroxysmal atrial tachy complete heart block increases fetal risk for? - correct answer neonatal pacemaker reactive NST in term fetus requires? - correct answer 2 access 15x15 w/I 20 min. in the BPP the chronic marker is? - correct answer AFV most commonly cited source of adverse outcome during labor? - correct answer communication failure - correct answer