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?
The fetal heartbeat can be heard via Doppler by 4 weeks of pregnancy.
The fetal heartbeat can be heard by external Doppler around 10-12 weeks of pregnancy.
You will first feel your baby move in week 24 of pregnancy.
The heart formation begins in week 5 of pregnancy and we can hear it by Doppler at 6 weeks.
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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Correct Answer is B
Explanation
Choice A rationale
Uteroplacental insufficiency typically results in late decelerations, not a sudden drop in fetal heart rate, which is more commonly caused by umbilical cord compression.
Choice B rationale
Umbilical cord compression can cause variable decelerations, which are characterized by a sudden drop in fetal heart rate. This occurs due to the umbilical cord being compressed,
leading to decreased blood flow and oxygen to the fetus.
Choice C rationale
Maternal bradycardia refers to a slow maternal heart rate and does not directly cause changes in the fetal heart rate pattern.
Choice D rationale
Fetal head compression typically causes early decelerations, which are gradual decreases in fetal heart rate that occur with contractions and are usually benign.
Correct Answer is A
Explanation
Choice A rationale
Anaphylactoid syndrome of pregnancy (also known as amniotic fluid embolism) occurs when amniotic fluid, fetal cells, hair, or other debris enter the mother's bloodstream, triggering
a serious reaction. It can cause sudden shortness of breath, cardiovascular collapse, and other severe symptoms immediately after a rupture of membranes and is a rare but critical
obstetrical emergency.
Choice B rationale
Abruptio placentae involves the premature separation of the placenta from the uterine wall, which leads to bleeding and potential fetal and maternal distress. However, it does not
typically present with sudden cardiorespiratory collapse or shortness of breath immediately following membrane rupture.
Choice C rationale
Uterine rupture refers to a tear in the wall of the uterus, usually due to trauma, labor stress, or previous surgical scars. While it is a severe condition, it usually presents with
abdominal pain, vaginal bleeding, and fetal distress rather than sudden respiratory failure.
Choice D rationale
Disseminated intravascular coagulation (DIC) is a condition affecting blood clotting processes, often secondary to other conditions like severe preeclampsia, sepsis, or trauma. It
generally presents with bleeding and clotting issues but not sudden respiratory or cardiovascular collapse.