A nurse is assessing a client who has hypocalcemia. Which of the following findings should the nurse expect? (Select all that apply.)
A.
Tingling sensation around the lips
B.
Abdominal distention
C.
Positive Trousseau’s sign
D.
Negative Chvostek’s sign
E.
Muscle cramps
The correct answer and Explanation is :
The nurse assessing a client with hypocalcemia should expect the following findings:
Correct answers: A, C, E
A. Tingling sensation around the lips
- This is a common manifestation of hypocalcemia, known as perioral paresthesia. Hypocalcemia affects neuromuscular function, leading to tingling or numbness, especially around the mouth, fingers, and toes. This occurs because calcium plays a crucial role in maintaining nerve excitability and conduction.
C. Positive Trousseau’s sign
- A positive Trousseau’s sign is a classic indication of hypocalcemia. To elicit this sign, the nurse inflates a blood pressure cuff on the client’s arm. A positive response occurs when the client experiences carpopedal spasm (involuntary contraction of the hand and fingers) within a few minutes due to increased neuromuscular irritability from low calcium levels.
E. Muscle cramps
- Muscle cramps are a direct result of neuromuscular irritability caused by hypocalcemia. When calcium levels are low, nerve and muscle excitability increase, leading to spontaneous and painful contractions. This can affect muscles in the legs, arms, and even the face.
Incorrect Answers:
B. Abdominal distention
- Abdominal distention is not commonly associated with hypocalcemia. Instead, hypocalcemia tends to cause gastrointestinal symptoms such as diarrhea or abdominal cramps due to smooth muscle irritability rather than distention.
D. Negative Chvostek’s sign
- In clients with hypocalcemia, you would expect a positive Chvostek’s sign. To check for this, the nurse taps on the facial nerve, and a positive sign results in twitching of the facial muscles. A negative sign would indicate that the client does not have the neuromuscular irritability commonly seen in hypocalcemia.
Explanation:
Calcium is essential for many physiological processes, particularly in maintaining the function of the nervous and muscular systems. Hypocalcemia, defined as low calcium levels in the blood (below 8.5 mg/dL), results in increased neuromuscular excitability, manifesting in symptoms such as tingling, muscle spasms, and cramps. Positive Trousseau’s and Chvostek’s signs are hallmark physical exam findings. Calcium is necessary for muscle contraction and nerve signaling, and when levels fall, the body’s ability to regulate these processes is impaired. Recognizing these signs allows for early intervention and treatment, typically through calcium supplementation or addressing the underlying cause.