Key Facts
- The blood pressure is not adequate to support the blood supply to the brain and may occur with standing up too quickly.
- Important heart conditions can also be a cause and need to be urgently ruled out.
Blackouts, or the sudden loss of consciousness (also called syncope), can happen to some people under stressful circumstances or hot weather. The blood pressure is not adequate to support the blood supply to the brain and may occur with standing up too quickly. Dehydration (low blood volume) increases the chances of fainting. Important heart conditions can also be a cause and need to be urgently ruled out. These include:
- Heart rhythm problems
- Structural problems with the heart, which include narrowing or excessive leakiness of the heart valves and a weakened heart muscle
- Medications, for existing heart conditions such as high blood pressure, or other medical problems
Speak with our cardiologists
Consult the specialists at The Harley Street Heart & Vascular Centre.
Farrer Park · Novena · Napier Road · Mount Elizabeth
Reviewed by the clinical team at The Harley Street Heart & Vascular Centre. This page is for general education and is not a substitute for medical advice.