Retrospective Cohort Study
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©The Author(s) 2022. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Feb 26, 2022; 10(6): 1775-1786
Published online Feb 26, 2022. doi: 10.12998/wjcc.v10.i6.1775
Table 1 Baseline demographic, clinical characteristics and angiographic characteristics of the study population (mean ± SD)
Variable Tertile I < 10.2 μmol/L, n = 3430 Tertile II 10.2-14.4 μmol/L, n = 3405 Tertile III > 14.4 μmol/L, n = 3401 P value (All) Tertile I vs Tertile II Tertile I vs Tertile III Tertile II vs Tertile III Age (years) 66.9 ± 10.4 66.3 ± 10.3 65.6 ± 10.0 < 0.001 0.020 < 0.001 0.006 Female, n (%) 1232 (36.0) 1017 (29.9) 676 (19.9) < 0.001 < 0.001 < 0.001 < 0.001 BMI (kg/m2 ) 24.6 ± 4.9 24.9 ± 11.2 24.9 ± 10.1 0.314 0.063 0.091 0.651 Current smoking, n (%) 774 (22.6) 731 (21.5) 735 (21.6) 0.491 0.401 0.288 0.821 Diabetes, n (%) 1015 (29.6) 848 (24.9) 782 (23.0) < 0.001 < 0.001 < 0.001 0.028 Hypertension, n (%) 2413 (70.4) 2327 (68.3) 2276 (66.9) 0.008 0.021 < 0.001 0.122 Hyperlipidemia, n (%) 532 (15.5) 557 (16.4) 522 (15.3) 0.470 0.449 0.726 0.266 Prior stroke, n (%) 353 (10.3) 300 (8.8) 253 (7.4) < 0.001 0.037 < 0.001 0.110 eGFR < 60 (mL/min/1.73 m2 ), n (%) 488 (14.2) 345 (10.1) 269 (7.9) < 0.001 < 0.001 < 0.001 < 0.001 LVEF (%) 66.8 ± 8.0 67.2 ± 7.8 67.0 ± 9.0 0.096 0.031 0.575 0.008 Prior MI, n (%) 395 (11.5) 360 (10.6) 399 (11.7) 0.271 0.054 0.861 0.071 Prior PCI, n (%) 876 (25.5) 800 (23.5) 806 (23.7) 0.094 0.052 0.056 0.978 Unstable angina, n (%) 1850 (54.0) 1740 (51.1) 1708 (50.3) 0.006 0.002 < 0.001 0.528 Perioperative medications, n (%) ACEI/ARB 1979 (57.7) 1916 (56.3) 1825 (53.7) 0.003 0.613 < 0.001 0.021 Beta-blocker 1746 (50.9) 1746 (51.3) 1691 (49.7) 0.407 0.835 0.129 0.082 Calcium-channel blocker 1270 (37.0) 190 (34.9) 1114 (32.8) 0.001 0.004 < 0.001 0.034 LDL-C (mmol/L) 2.05 ± 0.88 2.09 ± 0.86 2.04 ± 0.86 0.053 0.117 0.843 0.076 Lesions in vessels, n (%) Left main 197 (5.7) 186 (5.5) 180 (5.3) 0.711 0.613 0.578 0.959 Left anterior descending 1828 (53.3) 1848 (54.3) 1837 (54.0) 0.702 0.187 0.321 0.926 Left circumflex 579 (16.9) 524 (15.4) 578 (17.0) 0.136 0.068 0.902 0.051 Right coronary artery 983 (28.7) 994 (29.2) 955 (28.1) 0.597 0.960 0.196 0.184 AHA/ACC classification B2 /C, n (%) 1228 (35.8) 1256 (36.8) 1356 (39.9) 0.002 0.487 < 0.001 0.006 Calcification, n (%) 406 (11.8) 391 (11.5) 390 (11.5) 0.864 0.204 0.485 0.567 FFR/IVUS/OCT, n (%) 357 (10.4) 372 (10.9) 402 (11.8) 0.170 0.496 0.050 0.210 Number of implanted stents, median (IQR) 1 (1-2) 1 (1-2) 1 (1-2) < 0.001 0.005 0.005 0.133 Mean stent size > 2.5 mm, n (%) 3107 (90.6) 3077 (90.4) 3056 (89.9) 0.606 0.755 0.282 0.464 Balloon pre-dilation, n (%) 3031 (88.4) 2970 (87.2) 2921 (85.9) 0.009 0.039 0.001 0.183 Balloon post-dilation, n (%) 3175 (92.6) 3145 (92.4) 3156 (92.8) 0.793 0.999 0.828 0.827
Table 2 Factors affecting perioperative myocardial infarction in univariate and multivariate analysis
Variable Univariate model Multivariate model OR (95%CI) P value OR (95%CI) P value Age > 65 yr 1.428 (1.268, 1.607) < 0.001 1.272 (1.110, 1.457) 0.001 Female 1.225 (1.084, 1.384) 0.001 1.200 (1.034, 1.393) 0.017 BMI 0.983 (0.966, 1.000) 0.052 Current smoking 0.832 (0.721, 0.959) 0.011 0.943 (0.797, 1.117) 0.499 Diabetes 1.134 (0.999, 1.287) 0.052 Hypertension 1.271 (1.120, 1.443) < 0.001 1.054 (0.901, 1.233) 0.509 Prior stroke 1.181 (0.976, 1.428) 0.087 Prior MI 1.309 (1.108, 1.547) 0.002 1.200 (0.991, 1.454) 0.062 eGFR < 60 (mL/min/1.73 m2 ) 1.645 (1.400, 1.933) < 0.001 1.369 (1.135, 1.651) 0.001 LVEF 0.975 (0.968, 0.982) < 0.001 0.980 (0.972, 0.988) < 0.001 Unstable angina 1.116 (0.996, 1.250) 0.059 Perioperative medications ACEI/ARB 1.243 (1.107, 1.395) < 0.001 1.112 (0.965, 1.281) 0.144 Beta-blocker 0.992 (0.886, 1.112) 0.896 Calcium-channel blocker 1.067 (0.948, 1.201) 0.280 LDL-C > 1.8 mmol/L 0.930 (0.808, 1.070) 0.311 AHA/ACC classification B2/C 1.167 (1.040, 1.311) 0.009 1.363 (1.192, 1.558) < 0.001 Calcification 1.767 (1.514, 2.063) < 0.001 1.303 (1.091, 1.556) 0.004 FFR/IVUS/OCT 1.391 (1.178, 1.642) < 0.001 1.275 (1.056, 1.539) 0.011 Number of implanted stents 1.868 (1.741, 2.006) < 0.001 1.882 (1.738, 2.038) < 0.001 Mean stent size > 2.5 mm 1.117 (0.917, 1.362) 0.272 Balloon pre-dilation 1.116 (0.937, 1.330) 0.217 Balloon post-dilation 1.330 (0.926, 1.912) 0.123 Total bilirubin Tertile I 1 (ref) 1 (ref) Tertile II 0.800 (0.698, 0.918) 0.001 0.854 (0.739, 0.987) 0.032 Tertile III 0.786 (0.685, 0.902) 0.001 0.846 (0.735, 0.975) 0.021
Table 3 Cox proportional hazard regression model: incidence of major adverse cardiac events
Variable Univariate model Multivariate model HR (95%CI) P value HR (95%CI) P value Age > 65 yr 1.199 (1.080, 1.332) 0.001 1.123 (1.001, 1.260) 0.048 Male 1.213 (0.921, 1.598) 0.170 BMI 1.005 (0.969, 1.042) 0.782 Current smoking 0.982 (0.733, 1.316) 0.905 Diabetes 1.135 (1.098, 1.173) < 0.001 1.119 (1.079, 1.161) < 0.001 Hypertension 1.122 (0.848, 1.484) 0.420 eGFR < 60 (mL/min/1.73 m2 ) 1.291 (0.936, 1.780) 0.120 LVEF 0.996 (0.984, 1.008) 0.540 Unstable angina 1.284 (1.003, 1.644) 0.048 1.381 (1.071, 1.781) 0.013 LDL-C > 1.8 mmol/L 1.160 (1.650, 1.264) 0.001 1.094 (0.996, 1.201) 0.060 Perioperative medications ACEI/ARB 1.077 (0.825, 1.405) 0.586 Beta-blocker 1.044 (0.810, 1.345) 0.739 Calcium-channel blocker 1.197 (0.872, 1.644) 0.266 AHA/ACC classification B2/C 0.848 (0.638, 1.128) 0.258 Calcification 1.197 (0.872, 1.644) 0.266 Number of stents implanted 1.186 (1.031, 1.365) 0.017 1.171 (1.012, 1.354) 0.034 Total bilirubin Tertile I 1 (ref) 1 (ref) Tertile II 0.801 (0.604, 1.063) 0.125 0.837 (0.627, 1.119) 0.229 Tertile III 0.640 (0.469, 0.875) 0.005 0.667 (0.485, 0.918) 0.013
Table 4 Association between serum total bilirubin and clinical outcomes
Events Tertile I Tertile II Tertile III Composite MACE1 Number events/participants 118 (23.2) 81 (19.6) 59 (15.3) Adjust HR and 95%CI 1.0 (ref) 0.837 (0.627, 1.119) 0.667 (0.485, 0.918)a Cardiac death Number events/participants 27 (5.3) 13 (3.1) 13 (3.4) Adjust HR and 95%CI 1.0 (ref) 0.546 (0.28, 1.065) 0.588 (0.295, 1.171) Non-fatal myocardial infarction Number events/participants 13 (2.6) 11 (2.7) 7 (1.8) Adjust HR and 95%CI 1.0 (ref) 1.113 (0.487, 2.547) 0.736 (0.286, 1.898) Non-fatal stroke Number events/participants 2 (0.4) 2(0.5) 2 (0.5) Adjust HR and 95%CI 1.0 (ref) 1.534 (0.213, 11.067) 1.888 (0.251, 14.211) Revascularization2 Number events/participants 84 (16.5) 59 (14.3) 39 (10.1) Adjust HR and 95%CI 1.0 (ref) 0.814 (0.608, 1.089) 0.633 (0.458, 0.875)a