Prediction of residual angina after percutaneous coronary intervention

Aims Angina relief is a major goal of percutaneous coronary intervention (PCI); however, ∼1 in 5 patients continue to have angina after PCI. Understanding patient factors associated with residual angina would enable providers to more accurately calibrate patients'; expectations of angina relief after PCI, may support different follow-up strategies or approaches to coronary revascularisation, and could potentially serve as a marker of PCI quality. Methods and Results Among 2573 patients who had PCI at 10 US hospitals for stable angina, unstable angina or non-ST-elevation myocardial infarctions (NSTEMI), 24% reported angina 6-months after PCI, as assessed with the Seattle Angina Questionnaire Angina Frequency score (categorised as none vs. any angina; score=100 vs.