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Dr. P. Jyoti
Dr. P. Jyoti, Consultant MD
Category: Health
Satisfied Customers: 9126
Experience:  17 yrs experience in treating OPD & Emergency patients.
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how low can your blood pressure go before it is dangerous

Resolved Question:

how low can your blood pressure go before it is dangerous?
Submitted: 7 years ago.
Category: Health
Expert:  Dr. P. Jyoti replied 7 years ago.
The lower limit of a safe blood pressure is 90/60 mm hg.

This means that a systolic pressure below 90 mm hg or a diastolic pressure below 60 mm hg can cause symptoms.

Hence any pressure below this is dangerous as it causes symptoms.

If the pressure falls below 90 mmhg systolic, there is hypoperfusion (ie, decreased blood supply) of the organs, beginning with the brain, which causes dizziness, etc. The further the pressure falls, the more the organs are affected.

Any fall of pressure below this should be treated.

Another thing to consider is the normal baseline pressure. In patients who have higher normal pressure, the baseline would be higher and in this case, afall of 30 units is considered dangerous, ie, for a person who has a normal systolic pressure of 140, a fall below 110 would be considered dangerous.

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