An unlicensed assistive personnel (UAP) reports that a client's right hand and fingers spasm when taking the blood pressure using the same arm. After confirming the presence of the spasms, which action should the nurse take?

Choice A rationale: The spasm described is Trousseau's sign, a classic indicator of hypocalcemia. Inflating a blood pressure cuff above systolic pressure causes carpal spasm due to increased neuromuscular irritability, requiring immediate assessment of serum calcium levels. Choice B rationale: Carpal spasms during blood pressure measurement are a physiological manifestation of electrolyte imbalance, not psychological distress. Administering antianxiety medication would delay necessary treatment for a potentially life-threatening calcium deficiency. Choice C rationale: Moving the cuff to the other arm would likely produce the same result because hypocalcemia is a systemic condition. This action ignores the underlying physiological cause and fails to address the client's safety. Choice D rationale: The spasms are a physical reaction from the client, not a malfunction of the equipment. Replacing the sphygmomanometer would be an ineffective intervention that misses the clinical significance of the sign.