I agree with Elisha about your diastolic BP being a tad low, and your systolic being perfect. However this is a very strange reading in that you have what is called "high pulse pressure". Here is a blurb from the American Heart Association:
"Pulse pressure is the difference between the systolic and the diastolic readings. It appears to be an indicator of stiffness and inflammation in the blood-vessel walls. The greater the difference between systolic and diastolic numbers, the stiffer and more injured the vessels are thought to be. Although not yet used by doctors to determine treatment, evidence suggests that it may prove to be a strong predictor of heart problems, particularly in older adults. Some studies suggest that in people over 45 years old, every 10 mm Hg increase in pulse pressure increases the risk for stroke rises by 11%, cardiovascular disease by 10%, and overall mortality by 16%. (In younger adults the risks are even higher.)" End of quote.
Your diastolic pressure (55) that was measured that day in the office is really too low. I would drop by a pharmacy and have it checked again. Check it at the machines in the "X-marts" as often as you can for awhile.
Here is the problem with low diastolic pressure; this pressure occurs when your heart muscles relax after they have contracted. During this time, blood flows into your coronary arteries and on into the heart muscles. If this pressure is too low, then the flow of blood into your heart muscles is also low.
Your BP readings on that day could have been an anomaly, or a bad instrument out of calibration. Keep a check on it and let us know how your BP trends :)
P.S. I also read that thickening of the carotid arterial wall can cause a high pulse pressure.
Post Edited (Aldo) : 7/24/2006 8:36:37 AM (GMT-6)