Stress-echo ischaemia predicts reduction in angina after PCI
The degree of ischaemia identified by dobutamine stress echocardiography predicts the efficacy of percutaneous coronary intervention (PCI) in patients with stable coronary-artery disease, analysis of trial data suggests.
UK researchers carried out a secondary analysis of data from the ORBITA trial, in which 200 patients with stable angina and more than 70% single vessel stenosis were randomised to optimal medical therapy with either PCI or sham PCI.
In that trial, PCI was shown to add no benefit to exercise time at six-week follow-up.
In their new analysis,