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 D

Explanation

Notify the provider and prepare for delivery.Oligohydramnios is a condition where the amniotic fluid volume is less than expected for gestational age and it is associated with maternal and fetal complications.

The nonstress test (NST) is a method of fetal surveillance that measures the fetal heart rate response to fetal movement.A reactive NST is defined as at least two accelerations of 15 beats per minute or more above the baseline, lasting 15 seconds or more, within a 20-minute period.

A nonreactive NST indicates fetal hypoxia or acidosis and requires further evaluation.An acoustic stimulator can be used to elicit fetal movement and accelerations, but it should not be repeated more than once in a 10-minute period.

Therefore, choice A is wrong because repeating the acoustic stimulation after 1 minute is too soon and may cause fetal distress.

Choice B is wrong because documenting the finding as a nonreactive NST is not enough to address the situation.Choice C is wrong because performing a contraction stress test (CST) is contraindicated in oligohydramnios because it may cause umbilical cord compression and fetal compromise.

The CST involves inducing uterine contractions with oxytocin or nipple stimulation and monitoring the fetal heart rate for signs of intolerance.

A negative CST means that there

A. Fetal breathing movement B. Fetal tone C. Reactive fetal heart rate D. Amniotic fluid volume E. Fetal position

Correct Answer is ["A","B","C","D"]

Explanation

The correct answer is choice A, B, C and D.These are the four components of a biophysical profile (BPP) that are scored as 2 (normal) or 0 (abnormal) based on ultrasound examination.The fifth component is the nonstress test (NST) that measures the fetal heart rate reactivity.A total score of 8 or 10 is normal, 6 is equivocal, and 4 or less is abnormal.

Choice E is wrong because fetal position is not a part of the BPP score.Fetal position is determined by ultrasound but it does not affect the score.

Normal ranges for each component are:

• Fetal breathing movement: One or more episodes of fetal breathing lasting at least 30 seconds within 30 minutes.

• Fetal tone: One or more episodes of active extension and flexion of a fetal extremity or opening and closing of the hand within 30 minutes.

• Reactive fetal heart rate: Two or more fetal heart rate accelerations that peak at least 15 beats per minute above the baseline and last at least 15 seconds from baseline to baseline during 20 minutes of observation.

• Amniotic fluid volume: A single deepest vertical pocket of amniotic fluid that measures at least 2 centimeters.

• Gross body movement: Three or more discrete body or limb movements within 30 minutes.

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

Correct Answer is D

Explanation

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.)

Correct Answer is ["A","B","C","D"]

Explanation

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 caring for a client who is undergoing an oxytocin-stimulated contraction stress test (CST). The nurse observes three contractions in 10 minutes with no late decelerations of the fetal heart rate (FHR). Which of the following actions should the nurse take?

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 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 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?

(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?

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

What action should the nurse take when applying VAS?