Readmission Following Perioperative Myocardial Injury: Clinical Predictors and Impact on Mortality
Table 1
Characteristics of PMI patients overall and comparison of PMI patients grouped by 30-day death/readmission +/−.
All PMI patients n = 5159
PMI 30-day death/readmission (+) n = 2396
PMI 30-day death/readmission (−) n = 2763
Age, median (range)
72 (18–100)
73 (19−100)
70 (18−100)
<0.001
Male (%)
2862 (55.5)
1354 (56.5)
1508 (54.6)
0.180
BMI, kg/M2, mean (std dev)
29.7 (8.24)
29.5 (7.65)
30.0 (8.44)
0.070
Peak TnT, ng/dL, mean (range)
0.908 (0.04–95.83)
1.13 (0.04-81.09)
0.715 (0.04−95.83)
<0.001
Criteria for perioperative myocardial infarction (%)
841 (16.3)
364 (15.2)
477 (17.3)
0.057
Ejection fraction, median (range)
55 (10−75)
55 (10−65)
55 (20−75)
0.113
Cardiac catheterization (%)
48 (0.9)
44 (1.8)
4 (0.2)
<0.001
Smoker (%)
3081 (59.7)
1449 (60.5)
1632 (59.1)
0.320
Diabetes (%)
2023 (39.2)
983 (41.0)
1040 (37.6)
0.014
Renal disease (%)
2156 (41.8)
1080 (45.1)
1076 (38.9)
<0.001
Coronary artery disease (%)
2255 (43.7)
1094 (45.7)
1161 (42.0)
0.008
Prior myocardial infarction
1435 (27.8)
689 (28.8)
746 (27.0)
0.159
Prior stroke (%)
658 (12.8)
330 (13.8)
328 (11.9)
0.046
Hypertension (%)
3266 (63.3)
1527 (63.7)
1739 (62.9)
0.572
Hyperlipidemia (%)
2857 (55.4)
1331(55.6)
1526 (55.2)
0.795
Chronic lung disease
1567 (30.4)
788 (32.9)
779 (28.2)
<0.001
Prior cancer diagnosis
1448 (28.1)
728 (30.4)
720 (26.1)
<0.001
Peripheral arterial disease
1141 (22.1)
547 (22.8)
594 (21.5)
0.276
Continuous variables were compared using the Mann–Whitney U-test (age and ejection fraction) or Student’s t-test (BMI and peak TnT). Categorical variables were compared using the Pearson chi-square test. BMI = body mass index; TnT = troponin T.
