The impact of renal function on clinical outcomes of patients without chronic kidney disease undergoing coronary revascularization / 中华内科杂志

ABSTRACT

This study determined the profile of renal insufficiency in patients without chronic kidney disease(CKD)undergoing coronary revascularization and elucidated the effect of renal insufficiency of different degrees on clinical outcomes after revascularization and examined whether the reasonable choice of the mode of revasoularization could favourably influence prognosis.Methods Patients undergoing coronary revascularization were grouped by estimated creatinine clearance(CrCl)(Group Ⅰ,CrCl≥90 ml/min;Group Ⅱ,60 CrCl<90 ml/min;Group Ⅲ,30≤CrCl<60 ml/min;Group Ⅳ,CrCl<30 ml/min).We evaluated the relationship between the CrCl and the clinical outcomes of all of the patients.Results The mean Scr level of 2896 patients was(80.0±35.4)μmol/L There were 1035 patients(35.7%)in Group Ⅰ,1337 patients(46.2%)in Group Ⅱ,524 patients(18.1%)in Group Ⅲ and no patient in Group Ⅳ.During hospitalization,significant difference was found among Group Ⅰ-Ⅲ on mortality (1.0%.2.5% and 2.9%,P=0.009)and major adverse cardiar cerebra tvents(MACCE)(1.4%,3.5% and 4.6%.P=0.001).Compared with the normal renal function group,there were significantly higher rate of mortality(2.5% vs.1.0%,P=0.007).new-onset myocardial infarction(1.0% vs.0.2%,P=0.018)and MACCE(3.5% vs.1.4%,P=0.002)in miid renal insufficiency(Group Ⅱ).During follow-up,there were significant difference among Group Ⅰ-Ⅲ on mortality(2.0%,3.0% and 5.7%,P=0.002),stroke(1.0%,1.8% and 3.1%,P=0.023)and MACCE(9.9%,10.3% and 16.6%,P=0.001).The independent risk factors for all-cause death in patients after revascularization were the mode of revascularization(OR 8.332,95% CI 2.386-22.869,P=0.001).age(OR 1.184,95% CI 1.020-1.246,P=0.001).and the level of CrCl(OR 0.503,95% CI 0.186-0.988,P=0.045).In patients with normal renal function and mild renal insufficiency.the all-cause mortality after PCI was significantly lower that than after CABG(both P<0.01).Conclusions Renal insufficiency is common in patients without CKD undergoing coronary revascularization,even mild renal insufficiency is correlated with adverse clinical outcomes after revascularization.In patients with normal renal function or mild renal insufficiency,the mode of revascularization might lead to a prognostic difference.