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Table 2 Clinical characteristics at presentation, coronary angiography and revascularisation procedures in the protocol and non-protocol treated groups

From: Safety of the primary percutaneous coronary intervention strategy combining pre-hospital prasugrel, enoxaparin and in-hospital bivalirudin in acute ST-segment elevation myocardial infarction

  Protocol Non-protocol p-value
  n = 99 n = 291  
Anterior STEMI, n (%) 43 (43.4) 138 (47.4) 0.492
GRACE score, mean (SD) 112 (31) 124 (36) 0.002
CRUSADE score, mean (SD) 21 (13) 28(16) <0.0001
Killip class > I, n (%) 8 (8.1) 62 (21.5) 0.003
Killip class IV, n (%) 2 (2.0) 13 (4.5) 0.270
eGFR ml/min, mean (SD) 103 (40) 90 (41) 0.009
Hemoglobin g/l, mean (SD) 135 (15) 133 (18) 0.283
Weight kg, mean (SD) 81 (16) 80 (17) 0.644
Angiography
 Radialis access, n (%) 33 (33.3) 77 (26.6) 0.196
 3VD, n (%) 14 (14.1) 56 (19.2) 0.253
 LMD, n (%) 2 (2.0) 16 (5.5) 0.154
 TIMI flow grade 0–1, n (%) 68 (70.1) 119 (57.2) 0.031
 TIMI flow grade 3, n (%) 15 (15.5) 58 (27.9) 0.018
 Normal findings or modest coronary artery disease 0 (0) 46 (16.0) <0.0001
PCI, n (%) 99 (100) 205 (70.4) <0.0001
 Use of stents (of all PCI), n (%) 91 (91.9) 187 (91.2) 0.838
 Use of DES (of stents), n (%) 13 (14.3) 24 (12.8) 0.738
 Thrombectomy (of all PCI), n (%) 53 (53.5) 68 (33.2) 0.001
 TIMI flow grade 0–1 post PCI, n (%) 0 (0) 8 (3.8) 0.053
 TIMI flow grade 3 post PCI, n (%) 89 (91.8) 182 (85.8) 0.143
CABG, n (%) 2 (2.0) 17 (5.8) 0.127
  1. eGFR glomerular filtration rate estimated by Cockcroft-Gault formula, 3VD three vessel coronary artery disease, LMD left main coronary artery disease, LAD-PCI percutaneous coronary intervention to left anterior descending artery, DES drug-eluting stent, CABG coronary artery bypass graft surgery