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
1
, 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
5) Qualitiative amniotic fluid volume
BPP Score of 10 - ANSWER Normal
2
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
1
, 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
5) Qualitiative amniotic fluid volume
BPP Score of 10 - ANSWER Normal
2
