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Severe hyponatremia associated with thiazide diuretic use
Gurkiran K Sardar1, Wesley P Eilbert1
1Department of Emergency Medicine, University of Illinois Hospital & Health Sciences System, University of Illinois College of Medicine, Chicago, Illinois.
The Journal of Emergency Medicine
|December 16, 2014
Summary
Thiazide diuretics can cause hyponatremia, a dangerous drop in sodium levels. Early recognition and treatment are vital for patient safety, especially in emergency settings.
Area of Science:
- Nephrology
- Cardiology
- Emergency Medicine
Background:
- Thiazide diuretics are first-line treatments for hypertension.
- Hyponatremia is an uncommon but serious complication of thiazide use.
- The precise mechanism of thiazide-induced hyponatremia (TIH) remains under investigation.
Observation:
- A 69-year-old male presented with generalized weakness.
- Symptoms began two weeks after initiating hydrochlorothiazide (HCTZ).
- Laboratory tests revealed a serum sodium level of 120 mmol/L.
Findings:
- The patient was diagnosed with thiazide-induced hyponatremia (TIH).
- Treatment involved discontinuing HCTZ and implementing free water restriction.
- The patient's condition improved with this management strategy.
Implications:
- Emergency physicians must consider TIH in patients with nonspecific symptoms, especially after starting thiazides.
- Prompt diagnosis and management of TIH are crucial to prevent severe morbidity and mortality.
- Awareness of TIH is essential for safe and effective patient care in emergency medicine.
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