OB/GYN Actual Exam Questions and Answers
Which of the following measures of pulmonary function decreases in late pregnancy?
Tidal volume
Residual volume
Respiratory rate
Expiratory volume
Inspiratory capacity - ✔✔b: Residual volume
The increased nasal stuffiness and perception of increased nasal secretions during prenancy
are associated with
increased immunoglobulin production
increased interluminal production of mast cell toxins
increased airway conductance
decreased airway conductance
mucosal hyperemia - ✔✔e: mucosal hyperemia
Maternal arterial blood gas analysis during pregnancy would show
mild metabolic acidosis
mild respiratory alkalosis
mild metabolic alkalosis
mild respiratory acidosis
moderate metabolic alkalosis - ✔✔b: mild respiratory alkalosis
As compared with the nonpregnant state, the risk of thromboembolism during pregnancy
, is not effected by pregnancy
is increased during pregnancy and in the puerperium
is decreased during prengnancy and in the puerperium
is increased during pregnancy and decreased in the puerperium
is decreased during pregnancy and increased in the puerperium - ✔✔b: is increased
during pregnancy and in the puerperium
Displacement of the maternal heart during pregnancy is caused by
constriction of the anteroposterior diameter of the thorax
enlargement of the liver
elevation of the diaphragm
widening of the mediastinum
increased lung volume - ✔✔c: elevation of the diaphragm
Which of the following best describes the change in position of the maternal heart during pregnancy?
Displaced downward and to the right into a more vertical position
Displaced upward and to the left into a more horizontal position
Displaced upward and to the right into a more horizontal position
Displaced downward and to the left into a more vertical position - ✔✔b: Displaced upward and to
the left into a more horizontal position
When do changes in maternal cardiac output begin during pregnancy?
Early second trimester
First trimester
Late first trimester
Third trimester
Late second trimester - ✔✔b: First trimester
As compared with the nonpregnant state, the overall increase in maternal cardiac output
during pregnancy is approximately
, 30%-50%
10%-20%
5%-10%
50%-60%
60%-80% - ✔✔a: 30%-50%
Which of the following factors contributes to the changed maternal cardiac output during pregnancy?
Increased peripheral vascular resistance
Decreased maternal heart rate
Increased stroke volume
Decreased stroke volume
Increased venous return - ✔✔c: Increased stroke volume
During pregnancy, maternal ciculating blood volume increases about how much over nonpregnant
levels?
30%
60%
45%
5%
15% - ✔✔c: 45%
When does the increase in circulating maternal blood volume reach its peak during pregnancy?
18 weeks
32 weeks
12 weeks
38 weeks
24 weeks - ✔✔b: 32 weeks
What percent of cardiac output does the uterus receive at term?
, 10%
30%
20%
40% - ✔✔c: 20%
Occlusion of the vena cava by the gravid uterus results in shunting of venous return from the
lower extremities primarily through the
mesenteric circulation
portal vein circulation
paravertebral circulation
ovarian circulation - ✔✔c: paravertebral circulation
During normal pregnancy, maternal blood pressure
initially decreases to a nadir at 24-32 weeks and then returns to nonpregnant levels by term
is variable in relationship to the maternal body mass index (BMI)
begins to decrease at 7 weeks of gestation and reaches a nadir at term
initially increases to a peak at 24-32 weeks and then returns to nonpregnant levels by term -
✔✔a: initially decreases to a nadir at 24-32 weeks and then returns to nonpregnant levels by term
As compared with the nonpregnant state, how much does the maternal heart rate normally increase
during pregnancy?
The maternal heart rate does not increase
The heart rate increases 20-25 bpm
The heart rate increases by 10-15 bpm
The heart rate increases 10-18 bpm - ✔✔c: The heart rate increases by 10-15 bpm
During labor, what changes in maternal cardiac output occur?
20% increase from late pregnancy
40% increase from late pregnancy
60% increase from late pregnancy
Which of the following measures of pulmonary function decreases in late pregnancy?
Tidal volume
Residual volume
Respiratory rate
Expiratory volume
Inspiratory capacity - ✔✔b: Residual volume
The increased nasal stuffiness and perception of increased nasal secretions during prenancy
are associated with
increased immunoglobulin production
increased interluminal production of mast cell toxins
increased airway conductance
decreased airway conductance
mucosal hyperemia - ✔✔e: mucosal hyperemia
Maternal arterial blood gas analysis during pregnancy would show
mild metabolic acidosis
mild respiratory alkalosis
mild metabolic alkalosis
mild respiratory acidosis
moderate metabolic alkalosis - ✔✔b: mild respiratory alkalosis
As compared with the nonpregnant state, the risk of thromboembolism during pregnancy
, is not effected by pregnancy
is increased during pregnancy and in the puerperium
is decreased during prengnancy and in the puerperium
is increased during pregnancy and decreased in the puerperium
is decreased during pregnancy and increased in the puerperium - ✔✔b: is increased
during pregnancy and in the puerperium
Displacement of the maternal heart during pregnancy is caused by
constriction of the anteroposterior diameter of the thorax
enlargement of the liver
elevation of the diaphragm
widening of the mediastinum
increased lung volume - ✔✔c: elevation of the diaphragm
Which of the following best describes the change in position of the maternal heart during pregnancy?
Displaced downward and to the right into a more vertical position
Displaced upward and to the left into a more horizontal position
Displaced upward and to the right into a more horizontal position
Displaced downward and to the left into a more vertical position - ✔✔b: Displaced upward and to
the left into a more horizontal position
When do changes in maternal cardiac output begin during pregnancy?
Early second trimester
First trimester
Late first trimester
Third trimester
Late second trimester - ✔✔b: First trimester
As compared with the nonpregnant state, the overall increase in maternal cardiac output
during pregnancy is approximately
, 30%-50%
10%-20%
5%-10%
50%-60%
60%-80% - ✔✔a: 30%-50%
Which of the following factors contributes to the changed maternal cardiac output during pregnancy?
Increased peripheral vascular resistance
Decreased maternal heart rate
Increased stroke volume
Decreased stroke volume
Increased venous return - ✔✔c: Increased stroke volume
During pregnancy, maternal ciculating blood volume increases about how much over nonpregnant
levels?
30%
60%
45%
5%
15% - ✔✔c: 45%
When does the increase in circulating maternal blood volume reach its peak during pregnancy?
18 weeks
32 weeks
12 weeks
38 weeks
24 weeks - ✔✔b: 32 weeks
What percent of cardiac output does the uterus receive at term?
, 10%
30%
20%
40% - ✔✔c: 20%
Occlusion of the vena cava by the gravid uterus results in shunting of venous return from the
lower extremities primarily through the
mesenteric circulation
portal vein circulation
paravertebral circulation
ovarian circulation - ✔✔c: paravertebral circulation
During normal pregnancy, maternal blood pressure
initially decreases to a nadir at 24-32 weeks and then returns to nonpregnant levels by term
is variable in relationship to the maternal body mass index (BMI)
begins to decrease at 7 weeks of gestation and reaches a nadir at term
initially increases to a peak at 24-32 weeks and then returns to nonpregnant levels by term -
✔✔a: initially decreases to a nadir at 24-32 weeks and then returns to nonpregnant levels by term
As compared with the nonpregnant state, how much does the maternal heart rate normally increase
during pregnancy?
The maternal heart rate does not increase
The heart rate increases 20-25 bpm
The heart rate increases by 10-15 bpm
The heart rate increases 10-18 bpm - ✔✔c: The heart rate increases by 10-15 bpm
During labor, what changes in maternal cardiac output occur?
20% increase from late pregnancy
40% increase from late pregnancy
60% increase from late pregnancy
