Try our free nursing testbanks today. click here to join
Teas 7 test, Hesi A2 and Nursing prep
Nursingprepexams LEARN. PREPARE. EXCEL!
  • Home
  • Nursing
  • TEAS
  • HESI
  • Blog
Start Studying Now

Take full exam for free

The nurse preceptor is teaching about the physiology of the fetal heart rate (FHR) pattern. Which statement by the student indicates a lack of understanding?

A.

Vagus nerve stimulation increases FHR variability.

B.

Baroreceptors are responsible for regulating blood pressure.

C.

The autonomic nervous system controls the FHR.

D.

Chemoreceptors respond to changes in blood gas levels.

Answer and Explanation

The Correct Answer is A

Choice A rationale

 

This statement is incorrect. Vagus nerve stimulation actually decreases FHR variability. The vagus nerve, part of the parasympathetic nervous system, slows the heart rate and reduces variability.

 

Choice B rationale

 

This statement is correct. Baroreceptors are sensors located in blood vessels that help regulate blood pressure by detecting changes in the stretch of the vessel walls. They play a crucial role in maintaining stable blood pressure levels.

 

Choice C rationale

 

This statement is correct. The autonomic nervous system, which includes the sympathetic and parasympathetic nervous systems, controls the fetal heart rate. It regulates the balance between heart rate acceleration and deceleration.

 

Choice D rationale

 

This statement is correct. Chemoreceptors respond to changes in blood gas levels, such as oxygen and carbon dioxide. They help regulate respiratory and cardiovascular responses to maintain homeostasis.


Free Nursing Test Bank

  1. Free Pharmacology Quiz 1
  2. Free Medical-Surgical Quiz 2
  3. Free Fundamentals Quiz 3
  4. Free Maternal-Newborn Quiz 4
  5. Free Anatomy and Physiology Quiz 5
  6. Free Obstetrics and Pediatrics Quiz 6
  7. Free Fluid and Electrolytes Quiz 7
  8. Free Community Health Quiz 8
  9. Free Promoting Health across the Lifespan Quiz 9
  10. Free Multidimensional Care Quiz 10
Take full exam free

View Related questions

Correct Answer is B

Explanation

Choice A rationale

Monitoring the patient’s vocalizations and facial expressions can provide some information about the intensity of contractions, but it is subjective and not a reliable method for accurately assessing contraction intensity.

Choice B rationale

Palpating the maternal abdomen during a contraction is the best method for determining the intensity of contractions. By feeling the firmness of the uterus, the nurse can assess whether the contractions are mild, moderate, or strong. This method provides a more objective measure of contraction intensity compared to other methods.

Choice C rationale

Timing the amount of time between the ending of one contraction and the beginning of the next provides information about the frequency of contractions, not their intensity. This choice does not address the question of how to determine contraction intensity.

Choice D rationale

Palpating the maternal abdomen right after a contraction does not provide information about the intensity of the contraction that just occurred. The uterus will be relaxed after the contraction, making it difficult to assess the strength of the previous contraction.

Correct Answer is B

Explanation

Choice A rationale

Magnetic Resonance Imaging (MRI) is a non-invasive imaging technique that provides detailed images of the fetus and placenta. However, it is not typically used as the first-line test for assessing placental perfusion and IUGR. Doppler flow studies are more specific for evaluating blood flow and detecting issues related to placental insufficiency.

Choice B rationale

Doppler flow studies are non-invasive tests that assess blood flow in the umbilical artery and other fetal vessels. These studies are particularly useful in evaluating placental perfusion and identifying intrauterine growth restriction (IUGR). Abnormal Doppler flow patterns can indicate compromised blood flow to the fetus, which is a concern in cases of minimal fetal growth.

Choice C rationale

Amniocentesis is an invasive procedure that involves extracting a sample of amniotic fluid for genetic testing and assessment of fetal lung maturity. It is not used for evaluating placental perfusion or IUGR7.

Choice D rationale

Chorionic villus sampling (CVS) is an invasive procedure used for early genetic testing by sampling placental tissue. It is not used for assessing placental perfusion or IUGR7.

Quick Links

Nursing Teas Hesi Blog

Resources

Nursing Test banks Teas Prep Hesi Prep Nursingprepexams Blogs
© Nursingprepexams.com @ 2019 -2026, All Right Reserved.