RT Journal Article SR Electronic T1 Angiotensin-converting enzyme inhibitors and angiotensin receptor blockers in high vascular risk JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1339 OP 1346 DO 10.1136/heartjnl-2016-310705 VO 103 IS 17 A1 Louis Potier A1 Ronan Roussel A1 Yedid Elbez A1 Michel Marre A1 Uwe Zeymer A1 Christopher M Reid A1 Magnus Ohman A1 Kim A Eagle A1 Deepak L Bhatt A1 Philippe Gabriel Steg A1 , YR 2017 UL http://heart.bmj.com/content/103/17/1339.abstract AB Objective ACE inhibitors (ACEIs) and angiotensin receptor blockers (ARBs) are widely prescribed in patients with high cardiovascular (CV) risk. However, whether both classes have equivalent effectiveness to prevent CV events remains unclear. The aim of this study was to compare the incidence of major CV events between ACEI and ARB users.Methods The Reduction of Atherothrombosis for Continued Health registry is an observational study who enrolled 69 055 individuals with high CV risk. Among them, 40 625 patients (ACEIs 67.9% and ARBs 32.1%) were included. Main outcome was rates of CV mortality, non-fatal myocardial infarction, non-fatal stroke or hospitalisation for CV disease at 4 years.Results In a propensity score-adjusted cohort, the incidence of the primary outcome was lower in patients on ARBs compared with ACEIs (29.2% vs 33.4%; adjusted HR 0.90; 95% CI 0.86 to 0.95; p<0.001). Similar results were observed for CV (6.9% vs 8.2%; HR 0.83; 95% CI 0.75 to 0.93; p=0.001) and all-cause mortality (11.6% vs 12.6%; HR 0.89; 95% CI 0.82 to 0.97; p=0.005). Analyses using propensity score matching yielded similar results. History of diabetes or estimated glomerular filtration rate did not affect the results. ARB use was associated with lower rates of all-cause mortality in secondary prevention but not in primary prevention patients (p-value for interaction=0.03).Conclusion ARB use appears to be associated with 10% lower rates of CV events compared with ACEIs, especially in patients with established CV disease. Our results suggest that ARBs may provide superior protection against CV events than ACEIs in high-risk patients in real-world practice.