Incidence of acute bronchospasm during systemic adenosine administration for coronary angiography

Background Adenosine is frequently used during coronary angiography to induce hyperaemia and allow operators to perform quantitative measurements of lesion severity. Acute bronchospasm is a recognised side effect relating to the activation of ‘off target’ A2B receptors. The true incidence of severe bronchospasm relating to adenosine administration is not known.