OB HESI Exam 2026 Questions and
Answers
When talking with a pregnant client who is experiencing aching swollen, leg veins,
the nurse would explain that this is most probably the result of which of the
following?
A. thrombophlebitis
B. pregnancy induced hypertension
C. pressure on blood vessels from the enlarging uterus
D. the force of gravity pulling down on the uterus - Correct answer-D -
Explanation
Pressure of the growing uterus on blood vessels results in an increased risk for
venous stasis in the lower extremities. Subsequently, edema and varicose vein
formation may occur. Thrombophlebitis is an inflammation of the veins due to
thrombus formation. Pregnancy-induced hypertension is not associated with these
symptoms. Gravity plays only a minor role with these symptoms.
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,Which of the following would cause a false-positive result on a pregnancy test?
A. The test was performed less than 10 days after an abortion
B. The test was performed too early or too late in the
pregnancy
C. The urine sample was stored too long at room
temperature
D. A spontaneous abortion or a missed abortion is
impending - Correct answer-A - Explanation
A false-positive reaction can occur if the
pregnancy test is performed less than 10 days after an abortion. Performing the
tests too early or too late in the pregnancy, storing the urine sample too long at
room temperature, or having a spontaneous or missed abortion impending can all
produce false- negative results.
During a lecture on reproduction, a student nurse asks the instructor what
determines the sex of a fetus. Accurate information in response to this question
would be:
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, A. "The sex of the fetus is not determined until the eighth week of gestation."
B. "The fertilization of the zygote is the point at which sex is determined."
C. "Males have one less pair of chromosomes than females."
D. "Sex is determined by the chromosomes contributed by the ovum." - Correct
answer-B. Explanation
The sex of the fetus is determined at the point that the sperm fertilizes the ovum to
form the zygote. Sex is ultimately determined by the chromosome contributed by
the sperm.
Pediazole is a suspension medication that contains 200 mg erythromycin and 600
mg sulfisoxazole per 5 mL. The physician orders Pediazole 4 mL PO every 12
hours. How many mg of sulfisoxazole is this client receiving in a 24-hour period?
A. 160 mg
B. 320 mg
C. 480 mg
D. 960 mg - Correct answer-D. Explanation
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Answers
When talking with a pregnant client who is experiencing aching swollen, leg veins,
the nurse would explain that this is most probably the result of which of the
following?
A. thrombophlebitis
B. pregnancy induced hypertension
C. pressure on blood vessels from the enlarging uterus
D. the force of gravity pulling down on the uterus - Correct answer-D -
Explanation
Pressure of the growing uterus on blood vessels results in an increased risk for
venous stasis in the lower extremities. Subsequently, edema and varicose vein
formation may occur. Thrombophlebitis is an inflammation of the veins due to
thrombus formation. Pregnancy-induced hypertension is not associated with these
symptoms. Gravity plays only a minor role with these symptoms.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,Which of the following would cause a false-positive result on a pregnancy test?
A. The test was performed less than 10 days after an abortion
B. The test was performed too early or too late in the
pregnancy
C. The urine sample was stored too long at room
temperature
D. A spontaneous abortion or a missed abortion is
impending - Correct answer-A - Explanation
A false-positive reaction can occur if the
pregnancy test is performed less than 10 days after an abortion. Performing the
tests too early or too late in the pregnancy, storing the urine sample too long at
room temperature, or having a spontaneous or missed abortion impending can all
produce false- negative results.
During a lecture on reproduction, a student nurse asks the instructor what
determines the sex of a fetus. Accurate information in response to this question
would be:
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, A. "The sex of the fetus is not determined until the eighth week of gestation."
B. "The fertilization of the zygote is the point at which sex is determined."
C. "Males have one less pair of chromosomes than females."
D. "Sex is determined by the chromosomes contributed by the ovum." - Correct
answer-B. Explanation
The sex of the fetus is determined at the point that the sperm fertilizes the ovum to
form the zygote. Sex is ultimately determined by the chromosome contributed by
the sperm.
Pediazole is a suspension medication that contains 200 mg erythromycin and 600
mg sulfisoxazole per 5 mL. The physician orders Pediazole 4 mL PO every 12
hours. How many mg of sulfisoxazole is this client receiving in a 24-hour period?
A. 160 mg
B. 320 mg
C. 480 mg
D. 960 mg - Correct answer-D. Explanation
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