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.
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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Related Questions
Correct Answer is B
Explanation
A. "Adding pecans will be a change I can readily make.": Pecans are not a significant source of potassium compared to other foods.
B. "I will eat cantaloupe for my morning snack.": Cantaloupe is a potassium-rich food and an excellent choice to increase dietary potassium.
C. "I will miss eating yogurt every day for breakfast.": Yogurt is a good potassium source, so discontinuing it would not help.
D. "I can plan to eat rice instead of baked potatoes.": Rice is low in potassium, whereas baked potatoes are a potassium-rich option.
Correct Answer is D
Explanation
A. Vital signs: Vital signs can reflect changes in fluid status, but they are not always sensitive to small shifts in fluid balance and can be affected by many other factors like medications.
B. Skin turgor: Skin turgor can be useful for assessing dehydration but is not a reliable indicator for tracking fluid balance over time, especially in older adults where skin elasticity naturally declines.
C. Daily input and output: Monitoring intake and output is useful, but it is not the most reliable for evaluating overall fluid balance, especially in cases of insensible loss or shifts in third spaces.
D. Daily weights: Weighing the patient daily is the most reliable method for monitoring fluid balance because it directly reflects changes in fluid retention or loss, particularly in acute or chronic conditions like heart failure or dehydration.
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