26/03/2026
🩺 Orthostatic Hypertension — Full Medical Explanation
📌 What is Orthostatic Hypertension?
Orthostatic hypertension is a condition in which blood pressure increases abnormally when a person stands up from a sitting or lying position.
🔹 It is typically defined as:
• Increase in systolic BP ≥ 20 mmHg, and/or
• Increase in diastolic BP ≥ 10 mmHg upon standing
👉 This is the opposite of orthostatic hypotension (where BP drops on standing).
⸻
⚠️ Why Does It Happen? (Pathophysiology)
Normally, when you stand:
• Gravity pulls blood to the lower body
• The body compensates via the baroreflex system (nervous system control)
In orthostatic hypertension:
• There is overactivation of the sympathetic nervous system
• Blood vessels constrict excessively
• This causes a rise in blood pressure instead of stabilization
⸻
🚨 Symptoms
Some people are asymptomatic, but others may experience:
• Dizziness or lightheadedness
• Headache
• Blurred vision
• Palpitations
• Weakness
• Fainting (rare but possible)
⸻
🧠 Causes & Risk Factors
🔹 Main Causes:
• Autonomic dysfunction
• Arterial stiffness
• Excess sympathetic activity
🔹 Contributing Factors:
• Dehydration
• High salt sensitivity
• Certain medications (e.g., antihypertensives, stimulants)
• Chronic hypertension
• Diabetes (autonomic neuropathy)
⸻
👴 Why Is It More Common in the Elderly?
Orthostatic hypertension is more frequent in older adults due to:
1. Impaired Baroreflex
• Reduced ability to regulate blood pressure quickly
2. Increased Arterial Stiffness
• Blood vessels lose elasticity → exaggerated BP rise
3. Autonomic Nervous System Changes
• Dysregulation leads to abnormal vascular responses
⸻
🛡️ How to Protect Yourself
• Stand up slowly (especially from bed)
• Stay well hydrated
• Limit excessive salt intake (if advised)
• Exercise regularly (walking, light aerobic activity)
• Monitor blood pressure regularly
• Avoid sudden posture changes
⸻
💊 Treatment
Treatment depends on severity and underlying cause:
🔹 Lifestyle Measures:
• Hydration optimization
• Gradual position changes
• Regular physical activity
🔹 Medical Management:
• Adjust current medications (very important)
• Treat underlying conditions (e.g., diabetes, hypertension)
• In some cases:
• Beta-blockers
• Alpha-blockers
• Central sympatholytics
🔹 Supportive Measures:
• Compression stockings (in selected patients)
⸻
⚡ Complications
If untreated, it may increase the risk of:
• Cardiovascular events (heart attack, stroke)
• Falls and fractures (due to dizziness)
• Kidney damage
• Cognitive decline (long-term BP variability)
⸻
📊 Key Takeaway
Orthostatic hypertension is often underdiagnosed but clinically important.
Early recognition, monitoring, and proper management can prevent serious complications, especially in elderly patients.
Share and follow medical information and MCQs
