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
3) Fetal tone
4) Reactive fetal heart rate