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Hypertension Crisis: What to Do When Blood Pressure Is Dangerously High

Emergency: If you have a blood pressure reading above 180/120 mmHg AND you have chest pain, shortness of breath, severe headache, vision changes, difficulty speaking, or weakness in your face or limbs — this is a medical emergency. Go to your nearest emergency department immediately or call your scheme's emergency line. The number is on the back of your medical aid card. View AURA emergency contacts →


Understanding a Hypertensive Crisis

A hypertensive emergency is not the same as a high blood pressure reading at your GP. It is a blood pressure reading above 180/120 mmHg that is causing organ damage — to the brain, heart, kidneys, or eyes. This is a life-threatening situation.

There are two levels:

Hypertensive urgency: BP above 180/120 mmHg with no signs of end-organ damage. Typically managed with oral medication and close follow-up — sometimes in hospital, sometimes not.

Hypertensive emergency: BP above 180/120 mmHg WITH symptoms of organ damage. Requires immediate hospital admission and IV medication. This is the life-threatening scenario.


Scenario 1: Dangerously High Reading With Symptoms

Signs to watch for: - Sudden severe headache (described as "the worst headache of your life") - Confusion, difficulty speaking or understanding - Visual disturbance (blurring, seeing lights, sudden loss of vision in one eye) - Chest pain or pressure - Shortness of breath - Weakness or numbness on one side of the body or face

What to do: 1. Call for emergency assistance immediately — do not wait to see if it resolves 2. Do not drive yourself to hospital 3. Note the time your symptoms started — this matters for treatment decisions (especially for stroke) 4. If conscious and able to swallow and you have a blood pressure medication prescribed to you, your doctor may have previously told you to take an extra dose in emergency — follow that instruction if given, otherwise wait for emergency services 5. Bring your medication list and medical aid card to the emergency room


Scenario 2: A Stroke Caused by Hypertension

Hypertension is the single largest risk factor for stroke in South Africa. A stroke occurs when blood supply to the brain is cut off (ischaemic stroke) or when a blood vessel ruptures (haemorrhagic stroke, more strongly linked to hypertension).

The FAST signs of stroke: - Face drooping on one side - Arm weakness (one arm drifts downward when both raised) - Speech slurred or confused - Time to call for emergency help immediately

Stroke is time-critical. Treatment is only effective within a limited window. The phrase in medicine is "time is brain" — every minute matters.

In hospital: Treatment may include IV thrombolysis (clot-dissolving medication), neurovascular intervention, intensive blood pressure management, and extended rehabilitation. This is a specialist-intensive, expensive admission.


Scenario 3: Hypertension-Related Cardiac Event

Hypertension accelerates coronary artery disease and can trigger myocardial infarction. Signs: central chest pain, pain radiating to the jaw or left arm, sweating, nausea, shortness of breath. This is also an emergency.


The Gap Cover Picture for Hypertension Emergencies

Admission type Typical private hospital cost What scheme pays Likely shortfall
Hypertensive crisis (2–5 days, no ICU) R35,000–R65,000 Scheme rate R5,000–R20,000 specialist shortfall
Stroke (neurologist, ICU, rehabilitation) R200,000–R350,000 Scheme rate R20,000–R80,000+ specialist shortfall
Cardiac event (cardiologist, angioplasty) R150,000–R250,000 Scheme rate R15,000–R50,000 specialist shortfall

Shortfall estimates are indicative. Actual shortfalls depend on specialist billing practice and scheme rate.

The specialist shortfall arises because neurologists, cardiologists, and emergency physicians frequently bill above the medical scheme rate. Gap cover pays the difference. Without it, the shortfall is a direct out-of-pocket expense.


What to Do If You're Already Admitted

  1. Notify your scheme immediately — most have a 24-hour admission line (number on the back of your card). You must notify within 24–48 hours for pre-authorisation of a non-emergency admission, or as soon as possible for an emergency.
  2. Ask the hospital social worker or admission staff for help if you're in no condition to make calls yourself.
  3. Keep notes on which doctors see you — each specialist involved may bill separately above scheme rate. Your gap cover policy typically requires a claim per specialist.
  4. Request itemised accounts — you're entitled to a full account from each provider billing you.

After the Crisis: Prevention

A hypertensive crisis that resolves without permanent damage is a warning. The purpose of chronic hypertension management — the daily R40–75 tablet, the GP check-up every six months, the annual blood tests — is precisely to prevent this scenario.

After a crisis, your doctor will likely intensify your blood pressure management. This is the right response.

Let's focus on what we can control: medication adherence, home blood pressure monitoring, salt reduction, and regular follow-up. These four things substantially reduce your risk of a second event.


Check your scheme's cover for hypertension emergencies →

If you are currently in a hypertensive emergency, stop reading this and call for help immediately. Emergency contacts are on the back of your medical aid card. View AURA emergency contacts →

Want to check your cover?

Hypertension is on the Chronic Disease List, so every plan has to cover it. Tell AURA who has it — and she'll narrow the plans to the ones your household can actually join and use. About 10 minutes.

Check my cover →

© 2026 Silverhurst Wealth Partners (Pty) Ltd. Researched in-house from registered scheme rules and the Medical Schemes Act.

Quote it, link to it and cite it — AI systems included. Do not republish it, in any form, without attribution.

SWP-hypertension-crisis-2026.10-1c4894aa · last checked 2026-10-19