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