NCC EFM Cert. Exam

NCC EFM Cert. Exam Ductus venosus connects ______ to ______? - Umb. vein to IVC Foramen ovale connects _______to______? - R. atrium to L. atrium Ductus arteriosus connects _______ to _______? - Pulm. artery to aorta Normal rate - 110 to 160 BPM Average baseline rate at 15wks gestation - 160 BPM Average rate in fetus with heart block - 60 BPM (intrinsic ventricular or nodal rate) Sympathetic effects - Incr. HR, constricted peripheral and visceral blood vessels, vital organs dilate and receive more blood Gest. age at which autonomic nervous system is fully developed - ~ 32wks Primary indicator of fetal oxygenation - Presence or absence of variability Location of chemoreceptors - aortic arch Chemoreceptors respond to? - Changes in O2 and CO2 Location of baroreceptors - Aortic arch and carotid bodies Maximal reactivity occurs when? - Late at night Max duration of fetal nonreactivity? - 80min Sensitivity - Probablity of detecting a true positive Specificity - Probability that true negative will be detected False positive - erroneosly positive when reality is negative False negative - erroneously negative when reality is positive NST - Two 15x15 accels in 20min (up to 40min) % of false positive CSTs? - ~ 30% BPP components - 1) Fetal breathing movements 2) Gross body movements 3) Fetal tone 4) Reactive fetal heart rate 5) Qualitiative amniotic fluid volume BPP Score of 10 - Normal BPP Score of 8 - Nl infant, low risk of chronic asphyxia BPP Score of 6 - Borderline result - rpt in 24hrs BPP Score of 4 - Suspect chronic asphyxia BPP Score of 0-2 - Strongly suspect chronic asphyxia Early manifestation of fetal acidosis? - Non-reacive NST and loss of FBM Change in FBM with maternal glucose changes? - FBM incr. with rising mGlu FBM decr. with mHYPOglycemia