NCC EFM Exam Practice Questions 2023

NCC EFM Exam Practice Questions 2023 Oxygen is transferred from mom to fetus via the placenta through? Ans- Passive (Simple) Diffusion Intervillous space perfusion is dependent on? Ans- Adequate Uterine Blood Flow Maternal Fetal Exchange is best promoted by which maternal position? Ans- Either Rt or Lt Lateral What is transfer down the concentration gradient from higher to lower called? Ans- Diffusion The most likely physical rationale for recurrent late decels after epidural is? Ans- Maternal Sympathetic Blockade Which FHR pattern would be anticipated when monitoring mono-mono twins? Ans- Variable Decels Fetus can survive in an environment w/ a PO2 equal to adult venous blood d/t? Ans- increased O2 carrying capacity Variable decels are mediated primarily by? Ans- baroreceptors The sympathetic branch of the ANS influences FHR to? Ans- increase the average difference in baseline FHR b/w 30 & 40 weeks is? Ans- 10bpm usually 5-6; 10 is closest Fetal blood is most highly oxygenated in the? Ans- Ductus Venosous An abrupt rise in fetal bp can stimulate? Ans- variable decels During an acute episode of fetal hypoxemia, fetal blood flow is redistributed primarily to the? Ans- brain Over the course of pregnancy, the FHR baseline? Ans- decreases FHR variability is dependent upon? Ans- cerebral oxygen and intact CNS chemoreceptors respond mainly to? Ans- hypoxemia pH: 7.22 pCO2: 50 HCO3: 24 BE: -3 Ans- 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? Ans- 60 pH: 6.98 PCO2: 49 HCO3: 16 BE:-16 Ans- metabolic acidemia pH: 7.04 pCO2: 80 HCO3: 22 BE: -4 Ans- respiratory acidemia Fetal metabolic acidemia is indicated by an umbilical artery cord blood gas pH of 6.94 & BE of? Ans- -12 Decels that occur with 50% ctx: Ans- intermittent An acceleration of FHR that is elicited during fetal scalp stim indicates a fetal pH of at least? Ans- 7.19 FHR characteristic most predictive of a vigorous baby at birth is? Ans- variability EFM tracing w/ absent variability and recurrent late decels would be categorized as? Ans- abnormal (cat 3) likely cause of fetal tachy w/ moderate variability in a term fetus? Ans- maternal fever FHR pattern likely to develop w/severe fetal anemia? Ans- sinusoidal marked variability is mediated by? Ans- adrenergic activity during 1st stage of labor for women w/ no risk factors, efm should be reviewed every? Ans- 30 min. during 1st stage of labor for women w/complications, EFM should be reviewed every? Ans- 15 min. during 2nd stage labor for women requiring oxytocin, EFM should be reviewed every? Ans- 5 min. in any 10 minute sequence of FHR tracing, minimum baseline duration must be at least? Ans- 2 min. if baseline FHR is indeterminate, refer to prior? Ans- 10 min. window Baseline FHR variability is classified as? Ans- absent, minimal, moderate, marked primary goal in treatment of late decels? Ans- maximize uteroplacentel blood flow Rationale for low dose oxytocin protocol? Ans- half-life of oxytocin Initiate treatment for recurrent late decels w/ moderate variability during 1st stage? Ans- maternal repositioning FHR pattern likely to develop w/ severe fetal anemia? Ans- sinusoidal most consistent clinical sign of uterine rupture during tolac? Ans- recurrent decels of bradycardia loss of FHR variability can result from? Ans- medication administration IV stadol may result in? Ans- transient sinusoidal (pseudosinusoidal) When using a doppler to determine FHR, autocorrelation: Ans- compares successive reflective US waveforms at many points Sustained SVT increases fetal risk for: Ans- CHF (hydrops) toco detects changes in? Ans- the shape of the uterine wall fetoscope works by detecting? Ans- sound of opening/closing of heart valves short r-to-r intervals in fetal egg is indicative of? Ans- tachycardia most common fetal arrhythmia? Ans- PAC Fetal hydrops may develop w? Ans- paroxysmal atrial tachy complete heart block increases fetal risk for? Ans- neonatal pacemaker reactive NST in term fetus requires? Ans- 2 access 15x15 w/I 20 min