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Table 1 Clinical characteristics and outcomes stratified by ST resolution (STR)

From: Does pre-angiography Total ST-segment resolution reliably predict spontaneous reperfusion of the infarct-related artery in patients with acute myocardial infarction?

VariableSTR ≥ 70% n = 77 (22%)30% ≤ STR < 70% n = 160 (46%)STR < 30% n = 112 (32%)P
Patient characteristics
 Age (years)61.2 ± 7.362.1 ± 8.460.0 ± 7.80.12
 Male (%)75.374.471.40.15
 Smoking (%)55.852.558.00.26
 Hypercholesterolemia (%)41.637.540.20.54
 Diabetes mellitus (%)9.112.521.40.03
 Renal insufficiency (%)5.25.68.00.09
 Previous infarction (%)6.57.58.90.14
 Heart rate (bpm)75.6 ± 8.272.0 ± 9.377.9 ± 7.70.87
 Killip class > 1 (%)11.4 ± 3.215.8 ± 3.819.4 ± 4.60.08
 Left ventricular ejection fraction (%)56.6 ± 7.952.0 ± 8.242.4 ± 7.60.02
Home medication (%)
 Aspirin21.324.122.60.12
 Clopidogrel6.25.75.20.64
 Statins16.417.715.70.55
 β blockers12.414.113.80.76
 ACE inhibitors/ATII antagonists27.324.525.70.14
Ischemia characteristics
 Total ischemic time (min) *445.6 ± 46.2481.7 ± 48.4473.0 ± 41.30.07
 Anterior MI (%)45.540.042.80.13
 Non-anterior MI (%)54.560.057.20.45
 Maximal cTnI (ng/mL)0.54 ± 0.082.82 ± 0.256.03 ± 0.52< 0.001
 Creatine kinase-MB (U/L)54.0 ± 6.3168.0 ± 14.4276.0 ± 26.3< 0.01
 Multi vessel disease (%)35.032.533.90.41
Initial TIMI flow (%)
 014.336.380.4< 0.001
 17.89.46.30.45
 226.026.99.8< 0.001
 351.927.53.5< 0.001
Baseline Rentrop classification (%)
 0–16266590.23
 2–33834410.26
Treatment characteristics (%)
 Stent implantation93.595.695.50.54
 Platelet glycoprotein IIb/IIIa inhibitors42.948.857.10.03
Post-procedural TIMI flow (%)
 01.31.22.70.02
 11.34.48.00.01
 26.59.421.40.01
 390.985.067.90.03
Medical treatment at discharge (%)*
 Aspirin1001001001
 Clopidogrel1001001001
 Statins1001001001
 β-blockers96.198.194.40.42
 ACE inhibitor/ATII antagonists64.959.565.40.56
  1. cTnI: cardiac troponin I; MI: myocardial infarction; STR: ST resolution; TIMI: thrombolysis in myocardial infarction. * interval from symptom onset to balloon dilation. ACE: angiotensin converting enzyme; ATII: angiotensin receptor subtype II; CV: cardiovascular; STR: ST resolution; TIMI: thrombolysis in myocardial infarction