The nurse is using Chvostek sign to assess for hypocalcemia. Which statement correctly describes this test?

Tap the face just below and in front of the ear.

Inflate a blood pressure cuff around the upper arm for 4 minutes.

Apply pressure over the ulnar and radial arteries.

Forcefully dorsiflex the ankle when the knee is in an extended position.

Answer and Explanation

The Correct Answer is A

A. Tap the face just below and in front of the ear: This is the correct technique for eliciting Chvostek’s sign, which involves tapping over the facial nerve. A positive sign (twitching of facial muscles) indicates hypocalcemia.

B. Inflate a blood pressure cuff around the upper arm for 4 minutes: This describes Trousseau’s sign, another test for hypocalcemia, where carpopedal spasm occurs due to ischemia.

C. Apply pressure over the ulnar and radial arteries: This describes Allen’s test, used to assess arterial blood flow, not calcium levels.

D. Forcefully dorsiflex the ankle when the knee is in an extended position: This describes Homan’s sign, which is used to assess for deep vein thrombosis (DVT), not hypocalcemia.

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Correct Answer is D

Explanation

A. Increased appetite: Hyponatremia does not typically cause increased appetite.

B. Hyporeflexia: Severe hyponatremia may lead to neurological symptoms, but reflex changes are less common.

C. Constipation: This is unrelated to sodium levels.

D. Headache: Hyponatremia causes cellular swelling, including in the brain, leading to headache, nausea, and neurological symptoms.

A. "Bradycardia is an early indicator of a pneumothorax." B. "Administer a bronchodilator to the child after chest percussion therapy." C. "Engage the child in daily aerobic exercise." D. "A pigeon-shaped chest might become evident as the disease progresses."

Correct Answer is C

Explanation

. "Bradycardia is an early indicator of a pneumothorax.": Tachycardia, not bradycardia, is an early sign of pneumothorax.

B. "Administer a bronchodilator to the child after chest percussion therapy.": Bronchodilators are typically administered before chest physiotherapy to open airways and enhance mucus clearance.

C. "Engage the child in daily aerobic exercise.": Exercise promotes lung function, airway clearance, and overall physical health in children with cystic fibrosis.

D. "A pigeon-shaped chest might become evident as the disease progresses.": This is incorrect; barrel chest deformities, not pigeon chest, are associated with cystic fibrosis.

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The nurse is using Chvostek sign to assess for hypocalcemia. Which statement correctly describes this test?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is D

Explanation

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Correct Answer is C

Explanation

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