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A client, at 6 weeks gestation, arrives at the OB clinic for her initial visit and requests to hear the fetal heartbeat.
What should the nurse include in the teaching regarding cardiac development?

A.

The fetal heartbeat can be heard via Doppler by 4 weeks of pregnancy.

B.

The fetal heartbeat can be heard by external Doppler around 10-12 weeks of pregnancy.

C.

You will first feel your baby move in week 24 of pregnancy.

D.

The heart formation begins in week 5 of pregnancy and we can hear it by Doppler at 6 weeks.

Answer and Explanation

The Correct Answer is B

Choice A rationale

The fetal heartbeat cannot typically be heard via Doppler as early as 4 weeks of pregnancy. At this stage, the heart is still developing, and it is too soon for external detection with a Doppler device.

 

Choice B rationale

The fetal heartbeat is generally detectable by an external Doppler device around 10-12 weeks of pregnancy. This is the period when the heartbeat is strong enough to be picked up by the device.

 

Choice C rationale

Feeling the baby move, known as "quickening," typically occurs around 18-24 weeks of pregnancy, not 6 weeks. This sensation is different from hearing the heartbeat.

 

Choice D rationale

While the heart begins to form around week 5, it is not detectable by Doppler at 6 weeks. The technology does not have the sensitivity to detect such an early heartbeat externally.


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View Related questions

Correct Answer is A

Explanation

Choice A rationale

Betamethasone is a corticosteroid that accelerates fetal lung maturity by increasing the production of surfactant, which reduces respiratory distress syndrome in preterm infants.

Choice B rationale

While betamethasone can cause transient increases in fetal heart rate, its primary purpose is not to increase fetal heart rate. Its role is in enhancing lung maturity.

Choice C rationale

Betamethasone does not directly increase amniotic fluid levels. Its main function is in the maturation of fetal lungs.

Choice D rationale

Betamethasone is not used to stop preterm labor contractions. It is used to accelerate fetal lung development in preterm labor cases.

Correct Answer is D

Explanation

Choice A rationale

Phototherapy is a treatment for jaundice but is not a preventive measure. It is used after jaundice has been identified to reduce bilirubin levels in the newborn.

Choice B rationale

Suctioning excess mucus with a bulb syringe helps clear the newborn’s airways but does not have a direct role in preventing jaundice. Jaundice is related to bilirubin metabolism, not

mucus accumulation.

Choice C rationale

Preparing for an exchange blood transfusion is an intervention for severe hyperbilirubinemia but is not a preventive measure for jaundice. It is used when bilirubin levels are

extremely high.

Choice D rationale

Initiating early feeding helps to promote bowel movements, which assists in the excretion of bilirubin from the body. This is an effective preventive measure for jaundice, as it helps

reduce the chances of bilirubin buildup.

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