A nurse is caring for a client with hypoparathyroidism who i… | 마이메르시 MyMerci
Adult Health
문제

A nurse is caring for a client with hypoparathyroidism who is experiencing tetany. Which nursing intervention should be the priority?

A 51-year-old client who underwent thyroidectomy 24 hours ago is experiencing muscle spasms, tingling around the mouth, and positive Chvostek's sign. The client's serum calcium level is 7.2 mg/dL (normal: 8.5-10.5 mg/dL).
해설
The priority intervention for a client with hypoparathyroidism experiencing tetany is to administer prescribed IV calcium gluconate to rapidly correct the hypocalcemia and prevent life-threatening complications such as laryngospasm or cardiac arrhythmias.

심화 해설

Core Nursing Explanation Key Concept Analysis: This question tests the priority nursing intervention for Hypocalcemic tetany following thyroidectomy. The scenario describes classic signs of acute, symptomatic hypocalcemia: muscle spasms, perioral tingling, a positive Chvostek's sign (facial muscle twitch upon tapping), and a critically low serum calcium level of 7.2 mg/dL (normal: 8.5-10.5 mg/dL). This is a common complication after thyroid surgery due to accidental removal or damage to the Parathyroid glands, which regulate calcium balance. Tetany indicates neuromuscular irritability and is a medical emergency because it can progress to Laryngospasm (airway obstruction) or severe cardiac arrhythmias.
Answer Rationale: Key Point! The priority is to rapidly correct the life-threatening electrolyte imbalance. Intravenous (IV) calcium gluconate provides an immediate, direct source of calcium to raise serum levels, stabilize nerve cell membranes, and stop the tetany. Administering it "slowly" is crucial to prevent adverse cardiac effects like bradycardia or cardiac arrest.
Distractor Analysis: Watch out for confusion! Option ② (Deep breathing) is not the priority; while anxiety from tetany may increase respiratory rate, the root cause is hypocalcemia, not hyperventilation. Option ③ (Warm compresses) might provide comfort for muscle cramps but does not address the underlying, dangerous electrolyte deficit. Option ④ (Dietary calcium) is a long-term management strategy for chronic, stable hypocalcemia but is ineffective and unsafe for treating acute, symptomatic tetany, as oral absorption is too slow.
Related Concepts: This integrates knowledge of endocrine surgery complications, electrolyte emergencies, and the nursing process (prioritization using Airway, Breathing, Circulation (ABC) principles—tetany threatens the airway via laryngospasm). Understanding the role of parathyroid hormone (PTH) in calcium homeostasis is essential.
Concept Summary
ConceptKey Points
Hypocalcemia (Post-Thyroidectomy)Cause: Parathyroid gland injury/removal. Leads to low PTH → low serum calcium. Major risk: Tetany, laryngospasm.
Signs of TetanyEarly: Numbness/tingling (paresthesia) in fingers, toes, around mouth (perioral). Late/Classic: Muscle spasms, carpopedal spasm, positive Chvostek's & Trousseau's signs.
Priority InterventionIV calcium gluconate or chloride for acute, symptomatic hypocalcemia. Administer slowly (per protocol) while monitoring heart rate/rhythm.
Nursing MonitoringVital signs (esp. heart rhythm), respiratory status (for stridor/laryngospasm), neurological signs, serum calcium levels.

Side-by-Side Comparison!
ConditionKey FeaturePrimary CausePriority Nursing Action
Hypocalcemic Tetany (This Case)Neuromuscular irritability (spasms, tingling, +Chvostek's). Low serum Ca2+.Post-thyroidectomy, hypoparathyroidism.Administer IV calcium slowly. Protect airway.
Hypercalcemia"Bones, stones, groans, psychic overtones" (bone pain, kidney stones, constipation, confusion). High serum Ca2+.Hyperparathyroidism, malignancy.Hydrate with IV fluids, administer loop diuretics (per order), monitor for cardiac arrhythmias.

Anatomy, Physiology & Pharmacology Points
  • Physiology: Parathyroid glands (usually 4) secrete PTH, which increases blood calcium by: (1) stimulating bone resorption, (2) increasing kidney reabsorption of calcium, and (3) activating vitamin D to increase intestinal absorption.
  • Pathophysiology: Surgical damage → low PTH → all three mechanisms fail → rapid drop in serum ionized calcium → increased neuronal excitability and uncontrolled muscle contractions.
  • Pharmacology (Calcium Gluconate): IV administration provides immediate correction. Must be given slowly (e.g., over 10-20 minutes) to avoid vasodilation, hypotension, bradycardia, or cardiac arrest. Monitor ECG during infusion.

Memory Tips
  • Chvostek's Sign: Think "Cheek Twitch." Tapping the facial nerve in front of the ear causes the corner of the mouth/eye to twitch in hypocalcemia.
  • Trousseau's Sign: Think "Tourniquet Twitch." Inflating a blood pressure cuff above systolic pressure for 3 minutes induces carpal spasm (thumb adduction, finger flexion) in hypocalcemia.
  • Priority Acronym: For symptomatic hypocalcemia, think "ABC & Calcium" – Airway protection and Calcium administration are top priorities.

High-Frequency NCLEX Topics Post-operative complications, especially after thyroid/parathyroid surgery, are high-yield. The NCLEX loves to test:Recognizing early vs. late signs of hypocalcemia, prioritizing interventions for electrolyte imbalances, and understanding the rationale for specific drug administrations (like slow IV calcium). Always link the symptom (tetany) back to the pathophysiology (low calcium) and the most effective, immediate treatment.
Watch Out for Question Variations! The same concept can be tested in different ways:
  • Assessment Focus: "Which finding should the nurse report immediately in a client 1-day post-thyroidectomy?" (Answer: Tingling in fingers or positive Chvostek's sign).
  • Planning Focus: "When preparing to administer IV calcium gluconate, which equipment is essential?" (Answer: Cardiac monitor).
  • Evaluation Focus: "Which client outcome indicates effective treatment for hypocalcemic tetany?" (Answer: Absence of muscle spasms and normalization of serum calcium).

임상 시나리오

Nursing Clinical Practice Guide Clinical Scenario: You are the nurse on a surgical unit. Mr. Johnson, 51, had a total thyroidectomy yesterday for cancer. During your morning assessment, he complains of "pins and needles" around his lips and in his hands. You note slight twitching of his facial muscles when you gently tap his cheek (Chvostek's sign). His vital signs are stable, but he appears anxious.
Nursing Intervention Strategy:
  1. Immediate Assessment & Action: Recognize this as potential acute hypocalcemia. Stay with the patient, call for help, and notify the surgeon immediately. Assess airway patency for any signs of stridor or respiratory distress (impending laryngospasm). Check vital signs and connect to a cardiac monitor.
  2. Priority Implementation: Anticipate and prepare for the order for IV calcium gluconate. While obtaining the order, ensure IV access is patent. When administering, use an IV pump or carefully control the drip rate to infuse slowly (e.g., 0.5-2 mL/min as per hospital policy). Monitor the ECG closely for bradycardia or QT interval changes.
  3. Ongoing Care & Monitoring: After the infusion, reassess for resolution of tingling and spasms. Monitor serial serum calcium levels. Implement seizure precautions due to neuronal irritability. Provide a calm environment and explain procedures to reduce anxiety.
  4. Patient Education: Once stable, educate the patient on chronic hypocalcemia management if the parathyroid function does not recover: lifelong oral calcium and vitamin D supplements, signs of hypo/hypercalcemia to report, and the importance of follow-up lab work.
Patient Safety and Precautions:
  • IV Calcium Administration: NEVER give IV calcium rapidly. It can cause cardiac arrest. Do not mix with bicarbonate or phosphates in the same line (causes precipitation). Infuse into a large vein to minimize irritation; monitor the site for infiltration (can cause tissue necrosis).
  • Airway Vigilance: Laryngospasm is a silent, sudden emergency. Have emergency airway equipment (e.g., Ambu bag, intubation tray) readily accessible. Listen for any change in voice quality or new inspiratory stridor.

Nursing Procedure & Medication Flow Procedure: Administering IV Calcium Gluconate for Tetany 1. Verify: Provider's order, correct patient, correct medication, dose, and slow infusion rate. 2. Prepare: Draw up calcium gluconate. It is often supplied as 10% solution (100 mg/mL). Dilute as per protocol (often in 50-100 mL D5W). 3. Assess: Patent IV line (preferably a central line or large peripheral vein). Connect patient to cardiac monitor. 4. Administer: Use an IV pump. Set the rate precisely (e.g., over 10-20 minutes for a typical stat dose). Stay with the patient throughout the infusion. 5. Monitor: Continuous ECG for bradycardia, heart block, or arrhythmias. Monitor blood pressure. Assess for relief of symptoms (tingling, spasms). 6. Document: Drug, dose, route, rate, patient's response (symptom relief, any adverse effects), and post-infusion assessment.
A Word from Your Senior Nurse "Nursing is not just about carrying out physician orders — it's about being the frontline guardian for your patients! In clinical practice, recognizing subtle changes like perioral tingling after thyroid surgery is a critical nursing judgment that can prevent a full-blown airway emergency. When studying for your boards, don't just memorize 'calcium for tetany' — connect it to the real picture: a scared patient, a twitching face, and the knowledge that your quick, prioritized action with that slow IV push is what keeps them safe. That mindset will not only earn you a great score on the NCLEX but will make you a truly confident, professional nurse!"

마이메르시로 국가고시 완벽 대비

기출문제와 상세 해설을 무료로. 내 약점을 분석하고 진도를 관리하며 더 똑똑하게 공부하세요.

무료로 시작하기

학습 참고용입니다. 실제 임상은 최신 지침과 소속 기관 프로토콜을 따르세요.