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BP Meds Risk Sodium Danger
2 Apr
Summary
- Blood pressure drugs may cause dangerous drop in blood sodium.
- Older women over 80 are particularly vulnerable to this side effect.
- Thiazide diuretics are commonly prescribed in the UK for high blood pressure.
A significant Swedish study published in JAMA Network Open has raised concerns about commonly prescribed blood pressure medications. The research followed over 159,000 adults, revealing that certain drugs, especially thiazide diuretics, may dangerously lower blood sodium levels. This condition, known as hyponatremia, can lead to confusion, fatigue, and in severe instances, seizures.
While younger individuals face minimal risk, older women, particularly those over 80, are identified as a vulnerable group. Approximately three percent of elderly women on thiazides developed dangerously low sodium, compared to just over one percent on other blood pressure medications. The risk for men in the same age group was considerably lower.
Thiazide and thiazide-like diuretics are widely used in the UK to manage high blood pressure and heart failure by helping the body eliminate excess fluid and widening blood vessels. Experts now advise close monitoring of sodium levels for older women initiating thiazide treatment. Alternative medications, such as calcium channel blockers, might offer a safer option for this demographic.
Patients experiencing symptoms like confusion, dizziness, or unusual tiredness should promptly consult their GP. Regular blood tests, especially within the initial months of treatment, are recommended. This research underscores the importance of personalized blood pressure treatment, prioritizing the safety of at-risk patient groups.
