TY - JOUR
T1 - Long-term predictors of subsequent cardiovascular events with coronary artery disease and 'desirable' levels of plasma total cholesterol
AU - Miller, Michael
AU - Seidler, Alexander
AU - Kwiterovich, Peter O.
AU - Pearson, Thomas A.
PY - 1992/10
Y1 - 1992/10
N2 - Background. Patients with coronary artery disease (CAD) are at considerable risk for subsequent cardiovascular events. Although hyperlipidemia accentuates the risk, predictors of subsequent events with CAO and desirable total cholesterol (TC) (<5.2 mmol/l) have not been assessed. Methods and Results. A survival analysis was performed in a subset of 740 consecutive patients who underwent diagnostic coronary arteriography between 1977 and 1978. Eight-three men and 24 women with angiographically documented CAD and desirable TC were followed for subsequent cardiovascular events, including myocardial infarction and cardiovascular death. Over a 13-year period, 75% of CAD subjects with reduced high density lipoprotein cholesterol (HDL-C) (<0.9 mmol/l) developed a subsequent cardiovascular event compared with 45% of those with HDL-C ≥0.9 mmol/l (p=O.002). A Kaplan-Meier analysis revealed significantly greater survival from cardiovascular end points in patients with baseline levels of HDL-C ≥0.9 mmol/l (p=0.005). After 11 variables were tested, an age-adjusted Cox proportional-hazards model identified two pairs of independent predictors of subsequent cardiovascular events: they were a left ventricular ejection fraction (LVEF) <35% (relative risk [RR], 6.5; 95% confidence interval [CI], 2.8,15.3;p<0.001) and reduced HDL-C (RR, 2.0; 95% CI, 1.2,3.3; p=0.01) in the first model and LVEF <35% (RR, 6.5; 95% CI, 2.7,15.6; p<0.001) and TC:HDL ratio ≥5.5 (RR, 1.9; 95% CI, 1.1,3.1; p=0.02) in the second model. Conclusions. Low HDL-C (or high TC:HDL-C) is strongly predictive of subsequent cardiovascular events in subjects with CAD, despite desirable TC. As such, identification of this potentially modifiable risk factor should be actively pursued in this high-risk subgroup.
AB - Background. Patients with coronary artery disease (CAD) are at considerable risk for subsequent cardiovascular events. Although hyperlipidemia accentuates the risk, predictors of subsequent events with CAO and desirable total cholesterol (TC) (<5.2 mmol/l) have not been assessed. Methods and Results. A survival analysis was performed in a subset of 740 consecutive patients who underwent diagnostic coronary arteriography between 1977 and 1978. Eight-three men and 24 women with angiographically documented CAD and desirable TC were followed for subsequent cardiovascular events, including myocardial infarction and cardiovascular death. Over a 13-year period, 75% of CAD subjects with reduced high density lipoprotein cholesterol (HDL-C) (<0.9 mmol/l) developed a subsequent cardiovascular event compared with 45% of those with HDL-C ≥0.9 mmol/l (p=O.002). A Kaplan-Meier analysis revealed significantly greater survival from cardiovascular end points in patients with baseline levels of HDL-C ≥0.9 mmol/l (p=0.005). After 11 variables were tested, an age-adjusted Cox proportional-hazards model identified two pairs of independent predictors of subsequent cardiovascular events: they were a left ventricular ejection fraction (LVEF) <35% (relative risk [RR], 6.5; 95% confidence interval [CI], 2.8,15.3;p<0.001) and reduced HDL-C (RR, 2.0; 95% CI, 1.2,3.3; p=0.01) in the first model and LVEF <35% (RR, 6.5; 95% CI, 2.7,15.6; p<0.001) and TC:HDL ratio ≥5.5 (RR, 1.9; 95% CI, 1.1,3.1; p=0.02) in the second model. Conclusions. Low HDL-C (or high TC:HDL-C) is strongly predictive of subsequent cardiovascular events in subjects with CAD, despite desirable TC. As such, identification of this potentially modifiable risk factor should be actively pursued in this high-risk subgroup.
KW - Cholesterol
KW - Coronary artery disease
KW - Lipoproteins, high density
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U2 - 10.1161/01.CIR.86.4.1165
DO - 10.1161/01.CIR.86.4.1165
M3 - Article
C2 - 1394924
AN - SCOPUS:0026669282
SN - 0009-7322
VL - 86
SP - 1165
EP - 1170
JO - Circulation
JF - Circulation
IS - 4
ER -