Blood Pressure Can Get Too Low For Some People

The Doctor is In

November 22, 2000

Q: My sister went to the doctor and they said she has low blood pressure. I've always thought you wanted to keep your pressure as low as possible, so I'm wondering what could be the problem if it's too low. - Julie H., York County

A: The body maintains a pressure sufficient enough to provide blood to important body systems. This is defined as a person's blood pressure, and it is a measure of the pressure produced when the heart contracts and relaxes. Normal blood pressure is less than 140/90. To have a "low blood pressure" may mean that the person's blood pressure is not adequate to help pump blood throughout the body. Symptoms include dizziness, fatigue, weakness and even fainting. Causes can be due to a low fluid intake, kidney function, medications or other conditions such as pregnancy or irregular heart rhythms.

The actual numbers that signal low blood pressure depend on a person's weight and symptoms. For example, a blood pressure of 90/60 may be normal for a 100-pound elderly person but not for a larger, 30- year-old adult. To diagnose this condition, a careful history and physical exam need to be taken. If a person has low blood pressure, care should be taken to find causes and correct them. - Dr. Verneeta L. Williams, associate director of the Riverside Family Practice Center

Daily Press Articles