Worksheetspost test pregnancy physiology
Total questions: 10
Worksheet time: 10mins
The figure above shows the change in card iac
output with pregnancy. The discrepancy in the
two lines is due primarily to the effect
on respiration
on uterine blood flow
on venous return
of pressure on the aorta
on the central nervous system
Which one of the following is the correct statement regarding drug action and placental transfer in a parturient?
Placental transfer is minimal with muscle relaxants.
Opioids do not cross the placenta.
Inhalational anesthetics increase uterine
muscle tone.
Nitrous oxide is contraindicated for
cesarean section secondary to interference with vitamin B12
synthesis.
Thiopental does not cross the placenta
During pregnancy, the disproportionate increase in plasma volume versus
erythrocyte volume accounts for
Increase in the mean arterial pressure
Increase in stroke volume
Increase in cardiac output
Relative anemia of pregnancy
By the third trimester of pregnancy, cardiac output increases to nearly 50% due to which of these alterations?
Increase in stroke volume and increase in heart rate
Decrease in stroke volume and increase in heart rate
Increase in stroke volume and decrease in heart rate
Decrease in stroke volume and decrease in heart rate
The largest increase in cardiac output is seen during this peripartum period:
During induction of anesthesia
During the start of labor
Immediately after delivery
At conception
The speed of time to hypoxia following apnea is faster in the late-trimester parturient due to all of the following factors, except
Reduced functional residual capacity
Increased minute ventilation
Pre-oxygenation
Increased oxygen consumption
The correct respiratory physiologic change associated with pregnancy is
Increase in arterial pH
Increase in HCO3
Increase in PaCO2
Increase in tidal volume
Normal fetal heart rate (FHR) is
60 to 100 beats/min
90 to 130 beats/min
110 to 160 beats/min
150 to 200 beats/min
What is the P50 of fetal hemoglobin at term?
12 mm Hg
18 mm Hg
24 mm Hg
30 mm Hg
Cardiac output increases dramatically during pregnancy and delivery . The
cardiac output returns to nonpregnant values by how long postpartum?
12 hours
1 day
2 weeks
6 months
