NCC EFM PRACTICE EXAM 2023/2024 100 QUESTIONS AND 100% CORRECT ANSWERS/A+ GRADE

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