Background Chronic kidney disease (CKD) adversely affects outcomes in patients with coronary artery disease. Data on the impact of renal impairment on prognosis of patients undergoing percutaneous coronary intervention (PCI) for chronic total occlusion (CTO) are scarce. Methods A total of 2002 patients undergoing CTO PCI were stratified according to baseline renal function (group 1: 2 2 estimated glomerular filtration rate [eGFR] ≥ 90 ml/min/1.73 m , group 2: 60 to 89 ml/min/1.73 m , group 3: 30 to 59 ml/ 2 2 min/1.73 m , and group 4: <30 ml/min/1.73 m ). The primary outcome measure was all-cause mortality at a median follow- up of 2.6 (interquartile range 1.1–3.1) years. Results All-cause mortality increased with decreasing renal function (group 1: 5.0%, group 2: 9.5%, group 3: 26.4%, and group 4: 38.7%, log rank p < 0.001). Continuous eGFR values were significantly related with all-cause mortality (adjusted HR 0.98, 95% CI 0.98–0.99, p < 0.001). Procedural failure was associated with all-cause mortality both in patients with an eGFR < 60 ml/min/1.73 m (42.6 vs. 23.7%, adjusted HR 1.59, 95% CI 1.08–2.32, p = 0.02) and in those with an eGFR ≥ 60 ml/min/1.73 m (14.6 vs. 6.5%, adjusted HR 1.73, 95% CI 1.15–2.60, p = 0.009, interaction p =
Zeitschrift für Kardiologie – Springer Journals
Published: Nov 13, 2017
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