Submaximal adenosine‐induced coronary hyperaemia with 12 h caffeine abstinence: implications for clinical adenosine perfusion imaging tests

Abstract

Hyperaemia during adenosine is lower in some patients with 12 h of caffeine abstinence compared to 24 h. Longer caffeine abstinence, that is 24 h, is of value before pharmacological stress testing as the individual response is not known and the individual variation is large.