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Doctor insights on: What Exactly Does It Take To Fall Unconscious

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What exactly does it take to fall unconscious?

What exactly does it take to fall unconscious?

Unconsciousness: Falling unconscious most often happens as a faint. The most common cause of faint is what is called a "vasovagal" reaction in which fright, pain, disgust, horror, or other stimulus triggers the vagus nerve to lower your heart rate until your blood pressure drops too low to maintain normal cerebral consciousness. The other major cause of fainting is just low blood pressure, eg., dehydration, etc. ...Read more

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How long does it take someone who hasn't had any liquids to go into unconsciousness?

How long does it take someone who hasn't had any liquids to go into unconsciousness?

3 DAYS: The human can survive about 3 days without water, and at end of period will likely suffer cardiovascular collapse and death in most cases. Loss of consciousness would accompany this deterioration. ...Read more

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People with diabetes: how long does it take for a diabetic to become unconscious due to not eating?

People with diabetes: how long does it take for a diabetic to become unconscious due to not eating?

Incorrect Idea....: Even starving people, including diabetics, remain conscious; looking for food. Coma related to diabetes occurs due to blood glucose too low due to too much Insulin (a dangerous tx tool), not failure to eat. While widely rx'ed as tx for type ii, Insulin is a very bad tool: nearly always complicates dm with ?ed hunger, overeating, ?ed body fat, roller coaster bg, etc. Thus best avoid/minimize. ...Read more

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Am I going to be unconscious for my upcoming biopsy on my swollen neck? If not, how long to they take?

Am I going to be unconscious for my upcoming biopsy on my swollen neck? If not, how long to they take?

Need more info: If it is biopsy of a lymph node, that could be done under local anesthesia and may take only minutes. If it is for a mass deeper in the neck, then you may be put under general anesthesia. Please note that these procedures are quite safe. You should discuss your concern with your doctor. ...Read more

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What to do if every time while doctor takes my blood for check up I become unconscious .?

What to do if every time while doctor takes my blood for check up I become unconscious .?

Vasovagal : Fainting with blood draw is common. Under the stress of blood drawing the vagus nerve may lower heart rate too much an cause you to faint. Lay down the next when you have your blood drawn. Remaining laying down until you feel less dizzy. ...Read more