NCC EFM Exam Practice Questions & Answers Already Graded A+

Oxygen 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 decelsDuring 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 acidemiaFetal 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? - abnormal (cat 3) 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, markedprimary goal in treatment of late decels? - maximize uteroplacentel blood flow Rationale for low dose oxytocin protocol? - half-life of oxytocin