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What Causes Blackouts?

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Posted on Thu, 23 Apr 2015
Question: What causes black outs
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Answered by Dr. Dr. Rovena (3 hours later)
Brief Answer:
detailed below.

Detailed Answer:
Hello,

Welcome to Healthcare Magic.

Blackouts (Syncope) are caused by a temporary reduction in the blood flow to the brain.
There are many possible causes for blackout but the most common ones are:
-Postural hypotension.In this condition there is a reduction of the blood pressure when a person stand up quickly from a lying position ,causing a reduction of the blood flow to the brain.
-Heart conditions (arrhythmia or structural heart condition).
-Vasovagal syncope
-Low blood pressure (hypotension).
-Seizures

If you are having frequent episodes of blackouts ,you need to consult a physician for complete evaluation.A detailed medical history and physical examination is necessary.
The doctor may order some tests like complete blood count,blood sugar, ECG and stress test or heart ultrasound to exclude heart conditions.
Depending on the findings of the tests and physical examination ,further investigations might be necessary.


Hope it helps.
Let me know if you have any other question.I will be happy to help.

Kind regards,
Dr.Rovena Murati
Note: For further queries related to coronary artery disease and prevention, click here.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
Answered by
Dr.
Dr. Dr. Rovena

General & Family Physician

Practicing since :2013

Answered : 1243 Questions

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What Causes Blackouts?

Brief Answer: detailed below. Detailed Answer: Hello, Welcome to Healthcare Magic. Blackouts (Syncope) are caused by a temporary reduction in the blood flow to the brain. There are many possible causes for blackout but the most common ones are: -Postural hypotension.In this condition there is a reduction of the blood pressure when a person stand up quickly from a lying position ,causing a reduction of the blood flow to the brain. -Heart conditions (arrhythmia or structural heart condition). -Vasovagal syncope -Low blood pressure (hypotension). -Seizures If you are having frequent episodes of blackouts ,you need to consult a physician for complete evaluation.A detailed medical history and physical examination is necessary. The doctor may order some tests like complete blood count,blood sugar, ECG and stress test or heart ultrasound to exclude heart conditions. Depending on the findings of the tests and physical examination ,further investigations might be necessary. Hope it helps. Let me know if you have any other question.I will be happy to help. Kind regards, Dr.Rovena Murati