Ductus venosus connects ______ to ______? - Answer- Umb. vein to IVC
Foramen ovale connects _______to______? - Answer- R. atrium to L. atrium
Ductus
... [Show More] 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
5) Qualitiative amniotic fluid volume
BPP Score of 10 - Answer- Normal
BPP Score of 8 - Answer- Nl infant, low risk of chronic asphyxia
BPP Score of 6 - Answer- Borderline result - rpt in 24hrs
BPP Score of 4 - Answer- Suspect chronic asphyxia
BPP Score of 0-2 - Answer- Strongly suspect chronic asphyxia
Early manifestation of fetal acidosis? - Answer- Non-reacive NST and loss of FBM
Change in FBM with maternal glucose changes? - Answer- FBM incr. with rising mGlu
FBM decr. with mHYPOglycemia
Maternal smoking effects FBM how? - Answer- FBM decr. with msmoking
Corticosteroids effects FBM? - Answer- corticosteroids may decr. FBM
Maternal PAO2 at sea level? - Answer- ~105mmHg
Change in cardiac output and SVR in pre-E? - Answer- CO and SVR INCREASED in pre-E
Prolonged decels occured in ___% of uterine rupture? - Answer- 71%
Signif. neonatal morbidity occured when ____min or longer elapsed between onset of HFR decel and delivery. - Answer- 18min
Normal arterial pH for healthy vaginal deliveries? - Answer- 7.28+/- 0.05
Normal arterial pO2 for healthy vaginal deliveries? - Answer- 18.0 +/- 6.2
Normal arterial pCO2 for healthy vaginal deliveries? - Answer- 49.2 +/- 8.4
Normal base deficit for healthy vaginal deliveries? - Answer- Less than 12
pH at which acidosis - Answer- 7.2 (7.1)
Tachysystole - Answer- >5 contractions in 10min
Baseline (defn) - Answer- mean FHR rounded to increments of 5 BPM during a 10min perioud excl. periodic or episodic changes, contractions, periods of marked variability, and segments of baseline that differ by >25 BPM
Sinusoidal pattern? - Answer- Fetal anemia
As many as ___% of infants with complete heart block have assoc. congenital cardiac malformations. - Answer- 50%
Mortality rate for newborns with complete heart block - Answer- 25%
Newborn with complete heart block in absence of congen. heart disease frequently has neonatal ___________. - Answer- Lupus erthematosus
Baseline variability (defn) - Answer- Fluctuations in baseline FHR >2 cycles per minute (peak to trough); irregular in amplitude and frequency
Minimal baseline variability - Answer- > undetectable but 25 bpm
T/F Performing fetal stimulation is appropriate during decels or bradycardia. - Answer- FALSE - Fetal stim should be performed when FHR is at the baseline.
Early Decel (defn) - Answer- [Show Less]