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
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
