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Beer Potomania
🍺 Beer Potomania ➝ A rare cause of dilutional hyponatraemia due to excessive beer intake (hypotonic, low solute). First described in 1972.
ℹ️ About
- 🍻 Associated with chronic or binge drinking of beer, which is very low in solute (Na, protein).
- ⚖️ Leads to water–solute imbalance ➝ kidney cannot excrete free water effectively.
- Results in dilutional hyponatraemia.
🧬 Aetiology
- 💧 Excess free water intake with insufficient solute load.
- ⬇️ Renal free water clearance ➝ serum sodium falls.
🧑⚕️ Typical Findings
- 📖 History of chronic or binge alcohol use (esp. beer).
- 🍽️ Low dietary solute/protein intake ➝ protein malnutrition.
- Seen in neglected nutrition, chronic alcoholics.
🩺 Clinical Features
- Symptoms of hyponatraemia:
- 😴 Lethargy
- 🤕 Headache
- ⚡ Seizures
- 😵💫 Coma (severe cases)
- 🚫 No other cause of hyponatraemia (exclude diuretics, adrenal insufficiency, hyperlipidaemia, etc).
🔬 Investigations
- 🧪 Serum electrolytes: low Na, Cl, K.
- 📉 Serum osmolality: low (<275 mOsm/kg).
- 💧 Urine osmolality: very low (<100 mOsm/L) ➝ reflects low solute load.
💊 Management
- 🚱 Fluid restriction: key to correcting dilutional hyponatraemia.
- 🥗 Nutritional support: protein & calorie repletion.
- 🧂 Hyponatraemia correction:
- Correct sodium slowly to avoid osmotic demyelination syndrome.
- Frequent monitoring of serum sodium.
- 💉 Vitamin support: give Pabrinex (thiamine/B vitamins) to prevent Wernicke’s encephalopathy.
- 🍷 Withdrawal management: consider chlordiazepoxide if alcohol withdrawal is likely.
📚 References
| The content on this website is provided for educational and informational purposes only to support exam preparation (e.g., MLA, MRCP, USMLE) and learning. This is NOT medical advice, diagnosis, treatment, or professional guidance. It does not replace consultation with a qualified healthcare professional, official guidelines (e.g., NICE, GMC, BNF), or supervised clinical practice. Always verify information with current, authoritative sources. Makindo and its contributors accept no liability for any reliance on this content, including errors, omissions, or any resulting harm, loss, or consequences. By using this site, you agree to these terms. |
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