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Table 1 Patient characteristics

From: The feasibility of the 1-h high-sensitivity cardiac troponin T algorithm to rule-in and rule-out acute myocardial infarction in Thai emergency patients: an observational study

Variable 0–3 h (n = 65) 0–1 h (n = 65) p value
Age (years) 71.6 ± 13.2 66.6 ± 14.2 0.041
Male sex 37 (56.9) 26 (40) 0.054
Underlying disease
 Coronary artery disease
  Previous CABG 12 (18.5) 10 (15.4) 0.77
  Previous PCI 7 (10.8) 8 (12.3)  
  No intervention 12 (18.5) 10 (15.4)  
 Diabetes mellitus 25 (38.5) 21 (32.3) 0.46
 Hypertension 45 (69.2) 43 (66.2) 0.71
 Chronic kidney disease 27 (41.5) 23 (35.8) 0.47
  Stage III 15 (23.1) 10 (15.4) 0.01
  Stage IV 11 (16.9) 2 (3.1) 0.24
 GFR (mL/min/1.73m2) 55.7 ± 25.8 67.1 ± 22.4 0.008
Current medication
 Aspirin 32 (49.2) 34 (5.2) 0.65
 P2Y12 inhibitor 16 (24.6) 16 (24.6) 0.96
 Beta-blocker 39 (58.5) 25 (38.5) 0.03
 Calcium-channel blockers 23 (35.4) 20 (30.8) 0.62
 Nitrate 24 (36.9) 13 (20) 0.05
 Anticoagulant 9 (13.8) 10 (15.4) 0.78
 Diuretic 17 (26.2) 8 (12.3) 0.007
 ACEI/ARB 28 (43.1) 23 (35.4) 0.41
Onset of chest pain (hours) 5.5 ± 3.5 3.1 ± 3.0 < 0.001
Period of emergency department visit
 Government day time 28 (43.1) 29 (44.6) 0.99
 Government night time 19 (29.2) 19 (29.2)  
 Public holiday 18 (27.7) 17 (26.2)  
Initial electrocardiogram
 ST depression 15 (23.1) 11 (16.9) 0.54
 T wave inversion 13 (20) 8 (12.3)  
 Pathologic q wave 5 (7.7) 10 (15.4)  
 LBBB 3 (4.6) 2 (3.1)  
 RBBB 6 (9.2) 4 (6.2)  
 Arrhythmia 5 (7.7) 7 (10.8)  
Treatment in emergency department
 Aspirin 27 (41.5) 15 (23.1) 0.04
 P2Y12 inhibitor 24 (36.9) 17 (26.2) 0.19
 Morphine 3 (4.6) 0 (0) 0.08
 Nitroglycerine 23 (35.4) 14 (21.5) 0.08
 Intravenous furosemide 28 (43.1) 18 (27.7) 0.07
 Anticoagulant 26 (40) 19 (29.2) 0.2
 Oxygen 37 (56.9) 17 (26.2) < 0.001
  1. Data was presented in mean ± SD. Frequency was presented in n (%)
  2. Abbreviations: ACEI angiotensin converting enzyme inhibitor, ARB angiotensin receptor blocker, CABG coronary artery bypass grafting, GFR glomerular filtration rate, LBBB left bundle branch block, PCI percutaneous coronary intervention, RBBB right bundle branch block, 0–1 h 1-h high-sensitivity cardiac troponin T algorithm, 0–3 h 3-h high-sensitivity cardiac troponin T algorithm