LOW BLOOD SODIUM LEVEL
Hyponatremia
A common condition with low sodium levels in the blood, ranging from mild and asymptomatic to severe with seizures and coma. Carefully managed based on cause, severity and time-course.
ABOUT THIS CONDITION
What is Hyponatremia
Hyponatremia refers to a lower than normal sodium concentration in the blood. Sodium is essential for normal nerve and muscle function and for maintaining fluid balance. Hyponatremia can be acute (developing over hours to days) or chronic (developing over a longer period), and ranges from mild and asymptomatic to severe with significant neurological symptoms. Causes are categorised by fluid status — low fluid states (vomiting, diarrhoea, diuretics, kidney loss), normal fluid states (syndrome of inappropriate antidiuretic hormone secretion, hypothyroidism, certain medications) and high fluid states (heart failure, liver cirrhosis, kidney disease, nephrotic syndrome). Typical features depend on severity and rate of onset and include nausea, headache, confusion, weakness, restlessness, muscle cramps and, in severe cases, seizures, altered consciousness and coma. Diagnosis involves blood tests, urine tests and assessment of fluid status. Treatment depends on cause, severity, symptoms and rate of onset, and ranges from fluid restriction or modification to intravenous correction in carefully controlled settings to avoid serious complications from rapid correction. Dr. Patnam Pravallika Reddy provides comprehensive evaluation and care at Lux Hospitals, Hyderabad.
SIGNS TO WATCH
Common Symptoms
Symptoms that need attention
WHY IT HAPPENS
Causes & Risk Factors
- Vomiting, diarrhoea and other fluid losses
- Diuretic and other medications
- Syndrome of inappropriate antidiuretic hormone (SIADH)
- Hypothyroidism and adrenal insufficiency
- Heart failure
- Liver cirrhosis with fluid overload
- Chronic kidney disease and nephrotic syndrome
CLINICAL DETAILS
KeyFacts
Blood and urine sodium, osmolality, assessment of fluid status and tests for underlying cause
Mild · Moderate · Severe — based on sodium level and symptoms
Cause-specific and severity-specific approach
Affects treatment approach and rate of correction
Too-rapid correction can cause serious neurological complications
Available at Lux Hospitals, Hyderabad
HOW WE TREAT IT
Treatment Approach
Careful, Cause-Specific Sodium Correction
The most effective approach is careful evaluation of cause, severity and time-course, followed by appropriate treatment — fluid restriction, fluid modification, intravenous sodium correction in carefully controlled settings — while avoiding too-rapid correction that can cause serious complications.
- 1
Consultation & Assessment
Dr. Pravallika reviews medications, fluid status and possible causes, examines the patient and arranges blood and urine tests.
- 2
Treatment Planning
A personalised plan is created based on cause, severity, symptoms and rate of onset of hyponatremia.
- 3
Medical Management
Cause-specific therapy, careful sodium correction with monitoring, fluid restriction or modification, and management of underlying conditions.
- 4
Recovery & Follow-up
Regular monitoring of sodium levels, treatment adjustment and management of any persistent or recurrent hyponatremia.
AVAILABLE TREATMENTS
Treatment Options
Identifying the Underlying Cause
A careful workup including history, fluid status assessment, blood and urine tests determines the cause of hyponatremia and guides treatment.
Cause-Specific Therapy
Treatment is directed at the cause — adjusting diuretic therapy, treating hormonal disorders, managing heart or liver failure, or addressing other underlying conditions.
Fluid Restriction or Modification
In cases of SIADH and certain other causes, structured fluid restriction is often the main treatment.
Careful Sodium Correction in Symptomatic Cases
Symptomatic moderate to severe hyponatremia is treated with careful sodium correction in hospital, avoiding too-rapid correction that can cause serious neurological complications.
Hospital Care for Severe or Symptomatic Cases
Severe or symptomatic hyponatremia is managed in hospital with close monitoring and specialist input.
COMMON QUESTIONS
Frequently Asked Questions
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