Role of renin-angiotensin system antagonists on long-term mortality post-percutaneous coronary intervention in reduced and preserved ejection fraction.

Cox proportional hazards modelling demonstrated that ACEi/ARB therapy was independently associated with improved survival for those with EF 35–50 and > 50%, but despite a clear trend, did not reach significance in those with EF < 35%, likely attributable to the smaller sample size in this subgroup.

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