Baseline characteristics of study population
| No MVO or Haemorrhage (n=18) | MVO only (n=18) | Haemorrhage (n=12) | ANOVA p value | |
| Age, years | 57 (9.2) | 58 (8.1) | 56 (11.6) | 0.868 |
| Male | 16 (89) | 16 (89) | 11 (92) | 0.787 |
| Current smoker | 12 (67) | 7 (39) | 6 (50) | 0.428 |
| Diabetes mellitus | 0 | 1 (6) | 3 (25) | 0.020 |
| Hypertension | 7 (39) | 5 (28) | 4 (33) | 0.790 |
| Family history | 5 (28) | 9 (50) | 7 (58) | 0.213 |
| Hypercholesterolaemia | 10 (56) | 9 (50) | 8 (67) | 0.780 |
| Admission SBP, mm Hg | 142 (29) | 140 (28) | 148 (39) | 0.782 |
| Admission DBP, mm Hg | 88 (15) | 80 (23) | 97 (31) | 0.294 |
| Admission heart rate, beats/min | 74 (16) | 70 (16) | 74 (16) | 0.736 |
| Door to balloon time, min (median (IQR)) | 67 (49–80) | 56 (43–84) | 93 (64–138) | 0.014 |
| Pain to balloon time, min (median (IQR)) | 220 (148–283) | 176 (163–234) | 210 (132–310) | 0.425 |
| TIMI flow pre-PCI grade ≥2 | 5 (28) | 2 (11) | 1 (8) | 0.582 |
| TIMI flow post-PCI | ||||
| Grade 2 | 1 (6) | 2 (11) | 2 (17) | 0.632 |
| Grade 3 | 17 (94) | 16 (89) | 10 (83) | |
| Peak CK (U/l) | 934 (1009) | 1712 (1090) | 3023 (1950) | 0.001 |
| Admission total cholesterol (mmol/l) | 5.9 (1.1) | 5.5 (1.5) | 5.25 (0.9) | 0.410 |
| Admission blood glucose (mmol/l) | 6.0 (0.73) | 7.8 (3.0) | 8.31 (3.0) | 0.031 |
Continuous variables are represented as mean (SD) and categorical variables are represented as n (%).
ANOVA, analysis of variance; CK, creatine kinase; DBP, diastolic blood pressure; MVO, microvascular obstruction; PCI, percutaneous coronary intervention; SBP, systolic blood pressure; TIMI, thrombolysis in myocardial infarction.