# A nurse is caring for a client with hypoparathyroidism who is experiencing signs of hypocalcemia. Which nursing intervention should the nurse implement first?

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> subject: Adult Health

## 문제

A nurse is caring for a client with hypoparathyroidism who is experiencing signs of hypocalcemia. Which nursing intervention should the nurse implement first?

A 45-year-old client was admitted to the medical unit following thyroidectomy surgery performed 24 hours ago. The client is now experiencing muscle twitching, tingling around the mouth, and reports feeling anxious.

## 보기

1. Administer oral calcium supplements as prescribed
2. Encourage the client to perform deep breathing exercises
3. Prepare for immediate IV calcium gluconate administration **✔ 정답**
4. Position the client in semi-Fowler's position

**정답: 3**

## 해설

Immediate IV calcium gluconate administration is the priority intervention for acute hypocalcemia in hypoparathyroidism to prevent life-threatening complications such as laryngospasm and tetany.

Hypoparathyroidism after thyroidectomy is a serious complication that occurs when the parathyroid glands are damaged or removed during surgery. The parathyroid glands secrete parathyroid hormone (PTH), which is essential for maintaining calcium homeostasis in the body. When PTH levels decrease, serum calcium levels drop sharply, leading to hypocalcemia.

The clinical symptoms described in this scenario—muscle cramps, perioral tingling, and anxiety—are classic signs of hypocalcemia. These symptoms indicate neuromuscular irritability due to low calcium levels. If left untreated, hypocalcemia can progress to more severe complications such as laryngospasm, bronchospasm, seizures, and cardiac arrhythmias, which can be life-threatening.

The reason immediate intravenous calcium gluconate administration is the priority intervention is to rapidly correct serum calcium levels and prevent progression to serious complications. Intravenous calcium acts quickly to stabilize cell membranes and reduce neuromuscular irritability. Nurses should prepare for emergency administration as this is a critical situation requiring immediate intervention.

Post-thyroidectomy hypocalcemia is a medical emergency that can rapidly progress to respiratory distress due to laryngospasm, requiring immediate pharmacological intervention, which is why this intervention takes priority over other nursing actions.

## 심화 해설

Understanding the Priority: Airway, Breathing, Circulation

The client is exhibiting classic signs of acute hypocalcemia following a thyroidectomy, a procedure carrying a significant risk for hypoparathyroidism due to inadvertent damage or devascularization of the parathyroid glands [3]. The symptoms of muscle twitching, perioral tingling, and anxiety indicate neuromuscular irritability, a direct consequence of low serum calcium levels. In the NCLEX-RN framework, the nursing process always begins with assessment, but when a client presents with signs of a potentially life-threatening complication, the priority shifts to interventions that address the most immediate physiological risk. Here, severe hypocalcemia can rapidly progress to laryngospasm, seizures, and cardiac arrhythmias, including heart failure as noted in post-thyroidectomy case reports [1]. The first and most critical action is to stabilize the myocardium and prevent these severe neuromuscular and cardiac events.

Why Immediate IV Calcium is the Priority

The correct intervention is to prepare for immediate intravenous calcium gluconate administration. This directly addresses the "Circulation" component of the ABC priority framework by stabilizing cardiac cell membrane potentials and preventing lethal arrhythmias. The pathophysiology of hypoparathyroidism involves a deficiency in parathyroid hormone (PTH), which normally regulates calcium and phosphate homeostasis [2]. Without adequate PTH, serum calcium levels drop, leading to a state of increased neuronal excitability. The client's symptoms are not merely discomfort; they are precursors to tetany, convulsions, and cardiac decompensation. A case study on post-thyroidectomy hypocalcemia demonstrated that the resulting cardiomyopathy can be reversible with prompt calcium repletion, underscoring the urgency of restoring physiological calcium levels to prevent organ failure [1]. Oral supplements act too slowly in this acute, symptomatic presentation and are not the first-line intervention when neuromuscular irritability is already evident.

Analysis of Incorrect Options

While the other options are not harmful, they are not the priority and delay definitive treatment.

- Administering oral calcium supplements (Option 1) is an appropriate long-term management strategy for chronic hypoparathyroidism but is insufficient for a client in acute distress. Absorption is slow and unreliable when immediate systemic correction is needed.

- Encouraging deep breathing exercises (Option 2) addresses the client's reported anxiety, which is a symptom of the underlying hypocalcemia. Treating the symptom without addressing the cause is ineffective and dangerous, as the client’s condition can deteriorate.

- Positioning in semi-Fowler's position (Option 4) is a general comfort and respiratory support measure. While it may be implemented concurrently, it does not take precedence over the pharmacological intervention required to prevent life-threatening progression of hypocalcemia. The nurse must first prepare to administer the IV calcium as prescribed, which is the definitive treatment to reverse the pathophysiological cascade of neuromuscular and cardiac instability [1,2].References (research sources)

- [1]Reversible heart failure secondary to hypocalcemia in a post-thyroidectomy patient: a rare case report.Case reportPandit A, Baral J, Adhikari S, Parajuli P, Pandey P. (2025) · DOI: 10.1097/ms9.0000000000003813

- [2]Unveiling the complexities of hypoparathyroidism: a comprehensive review of clinical manifestations, diagnosis, and novel therapies.Research articleCetani F, Bertoldo F, Bononi M, Tarallo M, Camozzi V, Cipriani C, Palermo A, Pasquali D, Zavatta G. (2026) · DOI: 10.1007/s40618-025-02760-9

- [3]Predictive factors for permanent hypoparathyroidism following total thyroidectomy: A retrospective cohort study of 5,671 cases.Research articleJoaquim DT, Kohler HF, Vartanian JG, Kowalski LP, Carvalho GB. (2025) · DOI: 10.20945/2359-4292-2024-0379

## 임상 시나리오

Acute Hypocalcemia Post-ThyroidectomyRecognizing and Managing a Life-Threatening Emergency
Post-thyroidectomy hypoparathyroidism leads to acute hypocalcemia within 24-72 hours. Early signs include perioral tingling, muscle twitching, and anxiety. Immediate recognition is critical to prevent progression to laryngospasm, seizures, and cardiac arrhythmias.

The priority intervention is IV calcium gluconate administration to stabilize myocardial and neuromuscular cell membranes. Oral supplements are too slow for acute, symptomatic cases. Always ensure IV calcium is administered slowly to avoid extravasation and tissue necrosis.

CautionAssess for Chvostek's and Trousseau's signs. Have emergency airway equipment at the bedside, as severe hypocalcemia can rapidly cause laryngospasm and complete airway obstruction. Monitor cardiac rhythm for prolonged QT interval.

## 핵심 개념

- **Chvostek's Sign** — Clinical sign of hypocalcemia; tapping the facial nerve anterior to the ear causes ipsilateral facial muscle contraction.
- **Trousseau's Sign** — Clinical sign of latent tetany; inflating a blood pressure cuff above systolic pressure for 3 minutes induces carpopedal spasm.
- **Laryngospasm** — A severe complication of hypocalcemia where the laryngeal muscles spasm, causing airway obstruction and requiring immediate intervention.
- **Parathyroid Hormone (PTH)** — Hormone secreted by the parathyroid glands that increases serum calcium levels by acting on bones, kidneys, and the gastrointestinal tract.
- **IV Calcium Gluconate** — Intravenous form of calcium used for emergency correction of severe symptomatic hypocalcemia to stabilize cardiac and neuromuscular membranes.

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