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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Black Out Despite A Normal EEG Report?

Mother has had short seizure like blackouts over last 6 weeks. She is 76, went to ER tues night, because she had one that eve about 5;30 in front of me that lasted about 20-30 seconds. She the said she had one earlier and then she had one about 5-10 secs in the car on the way to the ER. They did EKG, MRI/brain, EEG, and echocardiogram. All negative per ER doc and the consulting neuro. They discharged her tonight with a heart monitor until Friday, and she has to go back for MRI on carotid when they can schedule her in. ER thought it might be low BP, neuro thought might be brain, but all tests so far negative. She takes high bp med, atavastin for cholesterol, a diuretic, and an osteo arthritis drug, plus vitamins. They don’t think it is side effect. My question; what are other possibles if all these test are negative?
Mon, 6 Aug 2018
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Internal Medicine Specialist 's  Response
Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.

She may be suffering from syncope it may be due to vasovagal syncope or postural syncope or cardiac syncope or neurological syncope or psychogenic syncope etc.

It may be due to side effects to drugs, check blood pressure lying down and erect posture, Holter monitoring, 24 hours ambulatory EEG, ECG monitoring, hemoglobin status may gives clue to diagnose the cause.

Please consult your neurophysician/cardiologist they will examine and treat you accordingly.

Take care.
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What Causes Black Out Despite A Normal EEG Report?

Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. She may be suffering from syncope it may be due to vasovagal syncope or postural syncope or cardiac syncope or neurological syncope or psychogenic syncope etc. It may be due to side effects to drugs, check blood pressure lying down and erect posture, Holter monitoring, 24 hours ambulatory EEG, ECG monitoring, hemoglobin status may gives clue to diagnose the cause. Please consult your neurophysician/cardiologist they will examine and treat you accordingly. Take care.