A nurse is teaching a patient who has urolithiasis (renal calculi). The nurse should explain that which of the following conditions can increase the risk for renal calculi?

Choice A rationale

Numbness and tingling around the mouth, or perioral paresthesia, is a classic sign of hypocalcemia, not a symptom to be addressed with mouth care. Offering mouth care would not address the underlying physiological issue, which is a potential disturbance in calcium levels due to accidental removal of or damage to the parathyroid glands during thyroidectomy, a serious and life-threatening complication.

Choice B rationale

Assessing for orientation would be an inappropriate action because the patient's symptoms are physical, not neurological, and do not suggest a change in mental status. The numbness and tingling are a specific finding pointing to a possible parathyroid gland injury and subsequent hypocalcemia. The nurse must prioritize assessment and intervention related to this critical electrolyte imbalance.

Choice C rationale

Muscle twitching, or neuromuscular excitability, is a hallmark sign of severe hypocalcemia. The numbness and tingling around the mouth are early indicators, and checking for muscle twitching, such as Chvostek's or Trousseau's sign, would further confirm the suspected diagnosis. This assessment is a critical and immediate step to evaluate the severity of the electrolyte imbalance and guide appropriate intervention.

Choice D rationale

Loosening the dressing is an action for a patient experiencing symptoms of a hematoma or airway compression, such as difficulty breathing or swelling. The patient's symptom of perioral paresthesia is related to a metabolic disturbance (hypocalcemia) and is not a sign of physical compression. Therefore, loosening the dressing would not alleviate this symptom and is an incorrect intervention.

Choice A rationale

A urine osmolality of 1200 mOsm/kg (1200 mmol/kg) is high and indicates highly concentrated urine. The normal range for urine osmolality is typically 500 to 800 mOsm/kg (500 to 800 mmol/kg) but can range from 300 to 1300 mOsm/kg depending on hydration status. A high reading suggests the patient is dehydrated and the kidneys are conserving water. Therefore, encouraging the patient to drink more fluids is the appropriate intervention to restore hydration and lower urine concentration.

Choice B rationale

Administering an intravenous diuretic would worsen the patient's dehydration. Diuretics promote fluid excretion from the kidneys, which would further concentrate the urine and deplete the body's fluid volume. This action is contraindicated and potentially dangerous in a patient who is already dehydrated, as indicated by the high urine osmolality.

Choice C rationale

Seizure precautions are not indicated based on this laboratory result alone. While severe electrolyte imbalances, such as hyponatremia or hypernatremia, can cause seizures, a high urine osmolality primarily reflects dehydration and concentrated urine. It does not directly indicate an electrolyte imbalance severe enough to cause neurological symptoms, and there is no information to suggest this.

Choice D rationale

Recommending a low-sodium diet is not the primary intervention. While high sodium intake can contribute to fluid imbalance, the immediate concern is the high urine concentration, which indicates dehydration. The most direct and effective action to address dehydration is to increase fluid intake. A low-sodium diet is not the immediate solution for this specific finding and is not a priority at this time.