A nurse is using vibroacoustic stimulation (VAS) to stimulate fetal movement during a nonstress test (NST).

What action should the nurse take when applying VAS?

Place the device over the fetal back for 3 seconds

Hold the device firmly against the maternal abdomen for 10 seconds

Move the device around the maternal abdomen until fetal movement is detected

Apply the device intermittently over the fundus for 15 seconds

Answer and Explanation

The Correct Answer is A

Place the device over the fetal back for 3 seconds. This is because vibroacoustic stimulation (VAS) is the application of a vibratory sound stimulus to the abdomen of a pregnant woman to induce fetal heart rate (FHR) accelerations. The presence of FHR accelerations reliably predicts the absence of fetal metabolic acidemia. VAS is typically used during a nonstress test (NST) to assess fetal well-being. The device should be placed over the fetal back for 3 seconds, as this is the optimal duration and location to elicit a fetal response.

Choice B is wrong because holding the device firmly against the maternal abdomen for 10 seconds may be too long and too strong for the fetus, and may cause discomfort or distress.

Choice C is wrong because moving the device around the maternal abdomen until fetal movement is detected may not be effective or efficient, as the device may not reach the optimal location or duration to stimulate the fetus.

Choice D is wrong because applying the device intermittently over the fundus for 15 seconds may not target the fetal auditory system, which is located near the fetal back, and may also be too long and too strong for the fetus.

Normal ranges for FHR are between 110 and 160 beats per minute, and FHR accelerations are defined as an increase of at least 15 beats per minute above baseline for at least 15 seconds.

Nursing Test Bank

Quiz #1: RN Exams Pharmacology Exams Quiz #2: RN Exams Medical-Surgical Exams Quiz #3: RN Exams Fundamentals Exams Quiz #4: RN Exams Maternal-Newborn Exams Quiz #5: RN Exams Anatomy and Physiology Exams Quiz #6: RN Exams Obstetrics and Pediatrics Exams Quiz #7: RN Exams Fluid and Electrolytes Exams Quiz #8: RN Exams Community Health Exams Quiz #9: RN Exams Promoting Health across the lifespan Exams Quiz #10: RN Exams Multidimensional care Exams

Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Quiz #1: Naxlex RN Comprehensive online practice 2019 B with NGN Quiz #2: Naxlex RN Comprehensive Predictor 2023 Quiz #3: Naxlex RN Comprehensive Predictor 2023 Exit Exam A Quiz #4: Naxlex HESI Exit LPN Exam Quiz #5: Naxlex PN Comprehensive Predictor PN 2020 Quiz #6: Naxlex VATI PN Comprehensive Predictor 2020 Quiz #8: Naxlex PN Comprehensive Predictor 2023 - Exam 1 Quiz #10: Naxlex HESI PN Exit exam Quiz #11: Naxlex HESI PN EXIT Exam 2

Free Nursing Study Resources

Correct Answer is ["E"]

Explanation

The test result is nonreactive after 40 minutes.Vibroacoustic stimulation (VAS) is the application of a vibratory sound stimulus to the abdomen of a pregnant woman to induce fetal heart rate (FHR) accelerations.VAS is typically used during a nonstress test (NST) to elicit fetal movement and reactivity when the baseline FHR variability is minimal or the test result is nonreactive after 40 minutes.VAS can shorten the testing time and reduce the incidence of non-reactive cardiotocography.

Choice A is wrong because the fetus’s presentation does not affect the use of VAS.

Choice B is wrong because VAS is not indicated for a fetus that has not moved for 40 minutes, unless the NST result is also nonreactive.

Choice C is wrong because minimal baseline FHR variability is not a sufficient indication for VAS, unless the NST result is also nonreactive.

Choice D is wrong because a history of stillbirth does not affect the use of VAS.

A. Change the client's position. B. Administer oxygen via face mask C. Increase intravenous fluid rate. D. Notify the health care provider.

Correct Answer is D

Explanation

Notify the health care provider.Late decelerations are a sign of uteroplacental insufficiency, which means that the blood flow and oxygen supply to the placenta and the fetus are compromised.This is a serious condition that can lead to fetal hypoxia and acidosis.The priority nursing intervention is to inform the health care provider who can assess the situation and decide on the appropriate course of action, such as delivery by cesarean section.

Choice A is wrong because changing the client’s position may not improve the blood flow to the placenta if there is a problem with the placenta itself, such as placental abruption.

Choice B is wrong because administering oxygen via face mask may not be enough to correct the fetal hypoxia caused by uteroplacental insufficiency.

Choice C is wrong because increasing intravenous fluid rate may not improve the blood flow to the placenta if there is a problem with the maternal blood pressure, such as hypotension from epidural analgesia.

View Question and Answer

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

A nurse is using vibroacoustic stimulation (VAS) to stimulate fetal movement during a nonstress test (NST). What action should the nurse take when applying VAS?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

(Select all that apply) A nurse is performing a nonstress test (NST) for a client who is at 32 weeks of gestation and has gestational diabetes mellitus. The nurse uses vibroacoustic stimulation to elicit fetal movement and acceleration of FHR. What are the indications for using this method?

Correct Answer is ["E"]

Explanation

A nurse is caring for a client in labor who has an internal fetal scalp electrode applied for continuous fetal heart rate (FHR) monitoring. The nurse notes a pattern of late decelerations on the FHR tracing. What is the priority nursing intervention?

Correct Answer is D

Explanation

A nurse is caring for a client who is scheduled for an amniocentesis at 35 weeks of gestation to assess fetal lung maturity. Which of the following laboratory tests will provide this information?

A nurse is caring for a client who is pregnant and undergoing a contraction stress test (CST). The nurse observes three uterine contractions in 10 minutes, with no late or significant variable decelerations of the fetal heart rate (FHR). How should the nurse interpret this finding?

A nurse is using vibroacoustic stimulation (VAS) to stimulate fetal movement during a nonstress test (NST). What action should the nurse take when applying VAS?

A nurse is reviewing the findings of a biophysical profile (BPP) for a client who is at 40 weeks of gestation. The BPP score is 6 out of 10 points. Which of the following components are included in this score? (Select all that apply.)

A nurse is providing discharge instructions to a client who had a nonreactive nonstress test (NST) followed by a biophysical profile (BPP) with a score of 8/10. Which of the following statements by the client indicates an understanding of the teaching?

A nurse is interpreting the results of a contraction stress test (CST) for a client who is at 38 weeks of gestation. The nurse notes that there are no late or significant variable decelerations of the fetal heart rate (FHR). How should the nurse document this finding?

A nurse is comparing nonstress test (NST) and contraction stress test (CST) for assessing fetal well-being. What is an advantage of NST over CST?

A nurse is using vibroacoustic stimulation (VAS) to stimulate fetal movement during a nonstress test (NST).

What action should the nurse take when applying VAS?