Hypertensive Emergency
A hypertensive emergency is a severe, sudden rise in blood pressure, typically above 180/120 mmHg, accompanied by signs of acute damage to the heart, brain, kidneys, or eyes. It is distinct from a hypertensive urgency, where pressure is equally high but no organ damage is present. This is a medical crisis requiring immediate hospital care.
Key points
- Blood pressure above roughly 180 over 120 mmHg, together with signs of organ damage, defines a hypertensive emergency rather than a milder urgency.
- In hospital, intravenous drugs such as labetalol bring the pressure down gradually rather than sharply, since a sudden drop can itself be harmful.
- Severe headache, visual disturbance, chest pain, breathlessness or confusion alongside very high readings calls for an emergency assessment without delay.
Warning Signs That Demand Immediate Attention
Symptoms that suggest a hypertensive emergency include a severe headache, blurred or double vision, chest pain, shortness of breath, confusion, or reduced urine output. Any combination of very high blood pressure readings with these symptoms warrants an emergency department visit without delay, do not attempt to lower blood pressure rapidly at home, as an abrupt drop can itself cause harm.
In hospital, intravenous agents such as labetalol are used to bring pressure down in a controlled, gradual way. Longer-term management afterwards falls under heart and blood pressure care, with regular monitoring to reduce the risk of recurrence.