Table 1

Characteristics of the patient population

Stable groupUnstable groupp Value
Total number of patients3732
Age (years) (mean (SD))60 (10)59 (10)0.578
Angina class (CCS)
 Class II109
 Class III276
 Class IV017
 Postinfarct angina015
Vessel disease
Culprit lesion artery
Hypercholesterolaemia1-150 26/3517/31 0.098
Family history1-151 18/3020/290.472
Diabetes mellitus2/373/320.526
Hypertension12/346/30 0.174
Drug treatment before ICUS
 Aspirin36/3732/32 1.000
 β Blocker31/37 27/32 0.947
 Calcium antagonist17/3715/320.938
 Heparin (sc, iv)0/376/320.008
 Glyceryl trinitrate (iv)0/374/320.042
 Nitrates (oral)28/3720/320.298
 ACE inhibitors9/373/320.123
  • Values are numbers of patients unless otherwise stated. In some cases the data were unavailable.

  • 1-150 Hypercholesterolaemia: total cholesterol > 5.4 mmol/l;

  • 1-151 family history: family history of coronary artery disease before 60 years of age.

  • ACE, angiotensin converting enzyme; CCS, Canadian Cardiovascular Society; Cx, circumflex coronary artery; ICUS, intracoronary ultrasound; iv, intravenous; LAD, left anterior descending coronary artery; RCA, right coronary artery; sc, subcutaneous.