What to do for low blood pressure?
Low Blood Pressure (Hypotension): Management Guide
Hypotension is generally defined as readings below 90/60 mmHg. Management depends on severity, symptoms, and underlying cause.
1. Immediate Self-Care Measures
- Increase fluid intake: Drink 2–3 liters of water daily; dehydration is the most common reversible cause. Oral rehydration solutions help if sweating, vomiting, or diarrhea occurred.
- Increase sodium intake: Only if advised by a physician; salt raises blood volume. Contraindicated in heart failure or kidney disease.
- Rise slowly: Sit up first, pause, then stand. Prevents orthostatic (postural) hypotension.
- Eat small, frequent meals: Large carbohydrate-heavy meals can cause postprandial hypotension (post-meal blood pressure drops).
- Wear compression stockings: Improves venous return and reduces blood pooling in the legs.
- Avoid triggers: Prolonged standing, hot showers, saunas, heavy alcohol consumption, and abrupt position changes.
- Cross legs and clench muscles: During prodromal symptoms (lightheadedness, visual dimming), tensing leg muscles and squatting can temporarily raise blood pressure and prevent fainting.
2. Medical Evaluation Required If
- Symptoms are frequent, worsening, or unexplained
- Readings are persistently below 90/60 mmHg with symptoms
- Fainting (syncope) has occurred
- Current medications may be responsible (diuretics, beta-blockers, alpha-blockers, antihypertensives, some antidepressants) — dose adjustment may be needed
- Suspected causes: adrenal insufficiency, thyroid disorders, cardiac arrhythmias, blood loss, severe infection (sepsis), anemia
3. Emergency Warning Signs — Seek Immediate Care
- Chest pain or pressure
- Shortness of breath
- Confusion, slurred speech, or loss of consciousness
- Cold, clammy, pale skin with weak rapid pulse (shock)
- Sudden severe symptoms after injury or bleeding
4. Diagnostic Workup Typically Includes
- Repeated blood pressure readings (including lying/standing measurements)
- Blood tests (electrolytes, CBC, cortisol, thyroid function)
- ECG or Holter monitor
- Evaluation of all current medications
Key Point: Asymptomatic low blood pressure in healthy individuals often requires no treatment. Symptomatic or sudden-onset hypotension warrants clinical investigation to identify the underlying cause.