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Low Blood Pressure: How Low Is Too Low?
Posted by Dr. Ben Kim on Feb 15, 2005
From Our Mailbag:
"Just read your blog about understanding blood pressure, and I have a question. There seems to be a lot of information out there about people with high blood pressure, but what about too low - how low is too low, and what does it mean? Information about low blood pressure seems to be pretty scarce, and I think it would be a good thing for you to comment on. Mine is usually something around 105/60, but that is
the same as my teenage daughter, so I am hoping it's good. Is this very uncommon?
Generally speaking, low blood pressure is only a problem if it causes dizziness or lightheadedness. I sometimes find that healthy people can have blood pressure that is significantly lower than 120/80.
I advise people to carefully monitor blood pressure lower than 90/60 when certain drugs are involved.
Here is a list of drugs that can cause dangerously low blood pressure and warrant careful observation:
Drugs for high blood pressure, including diuretics
Drugs for anxiety
Some drugs for depression
Narcotic pain killers
Certain heart medications
Also, it's important to note that the following conditions can cause problematic low blood pressure:
Irregular heart beat
Shock (from trauma, infection, stroke, or
life-threatening allergic reaction)
Advanced peripheral vascular disease
So long as none of the drugs and conditions listed above apply to you, I wouldn't consider having blood pressure as low as 90/60 to be a problem.
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