I know it is best to measure BP while sitting and at rest but I participate in a rare blood donation program and am often deferred because my sitting blood pressure is below the acceptable range for donation (90/50). At one recent visit someone suggested that I stand for the blood pressure measurement. My sitting BP was 88/46. The pressure taken immediately after standing rose about 14 points in both the systolic and diastolic readings. While my pressure now fell within the normal range for donation the blood center staff became concerned because of the difference between the standing and sitting pressures and I was still deferred.
Since then I've read about 1 minute and 2 minute standing pressures. Is it possible that my standing pressure was just taken too soon after standing although I always thought standing BPs were supposed to be lower? If a standing pressure is taken is it more accurate when taken after a certain length of time? I'm grateful I don't have a problem with my BP but want to be able to continue in this blood program without being deferred regularly for my BP.
Blood pressure is a dynamic variable and a blood pressure reading at any given point is only a "snapshot" of a "motion picture". The typical response to standing is a very brief slight drop in pressure followed by a slight increase above sitting after about a minute or 2. Standing still for a prolonged period may result in an additional drop in BP. In someone who is dehydrated there may be a pronounced drop in blood pressure with standing. Methods for elevating blood pressure would include increasing fluid and salt intake, exercise immediately before taking blood pressure and various medications (including real licorice which is not generally available in the US).
Copyright 1994-2017MedHelp International.All rights reserved. MedHelp is a division of Aptus Health.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.