NCC EFM Cert. Exam

Ductus venosus connects ______ to ______? - Answer- Umb. vein to IVC Foramen ovale connects _______to______? - Answer- R. atrium to L. atrium Ductus arteriosus connects _______ to _______? - Answer- Pulm. artery to aorta Normal rate - Answer- 110 to 160 BPM Average baseline rate at 15wks gestation - Answer- 160 BPM Average rate in fetus with heart block - Answer- 60 BPM (intrinsic ventricular or nodal rate) Sympathetic effects - Answer- 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 - Answer- ~ 32wks Primary indicator of fetal oxygenation - Answer- Presence or absence of variability Location of chemoreceptors - Answer- aortic arch Chemoreceptors respond to? - Answer- Changes in O2 and CO2 Location of baroreceptors - Answer- Aortic arch and carotid bodies Maximal reactivity occurs when? - Answer- Late at night Max duration of fetal nonreactivity? - Answer- 80min Sensitivity - Answer- Probablity of detecting a true positive Specificity - Answer- Probability that true negative will be detected False positive - Answer- erroneosly positive when reality is negative False negative - Answer- erroneously negative when reality is positive NST - Answer- Two 15x15 accels in 20min (up to 40min) % of false positive CSTs? - Answer- ~ 30% BPP components - Answer- 1) Fetal breathing movements 2) Gross body movements