Characteristics of dyspnoea and associated clinical outcomes in the CHAMPION PHOENIX study

Summary Dyspnoea may be induced by some reversibly-binding P2Y 12 inhibitors, including cangrelor and ticagrelor. Dyspnoea was not associated with any compromise to the efficacy of ticagrelor in the PLATO study. The CHAMPION PHOENIX study (NCT01156571) compared initial treatment with cangrelor versus initial treatment with clopidogrel in patients undergoing PCI. We investigated the incidence, characteristics, and associated clinical outcomes in patients with dyspnoea in CHAMPION PHOENIX. Adverse events (AEs) of dyspnoea to 48 hours were recorded in patients randomised to cangrelor or clopidogrel in CHAMPION PHOENIX. The composite primary endpoint of death, myocardial infarction, ischaemia-driven revascularisation, or stent thrombosis as well its individual components were assessed in patients who did or did not report dyspnoea. A total of 68 (1.2 %) cangrelor-treated patients and 18 (0.3 %) clopidogrel-treated patients reported dyspnoea (p