Predonation hydration and applied muscle tension combine to reduce presyncopal reactions to blood donation.

ABSTRACT:

Background

A randomized controlled trial was conducted to test the effects of hydration and applied muscle tensing on presyncopal reactions to blood donation. Both interventions are designed to prevent the decreases in blood pressure that can contribute to such reactions, but due to the distinct physiologic mechanisms underlying their pressor responses it was hypothesized that a combined intervention would yield the greatest benefit.

Study design and methods

Before blood donation, first- and second-time blood donors (mean age, 20.2 years; SD, 4.9) were randomly assigned to 1) standard donation, 2) placebo (leg exercise before venipuncture), 3) predonation water, or 4) predonation water and leg exercise during donation.

Results

Main effects of group were observed for p

SUBMITTER: France CR 

PROVIDER: S-EPMC2935324 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature