Baseline characteristics and procedural data for patients included in the coronary collateral study cohort
| −Collateral blood flow (n=40) | +Collateral blood flow (n=43) | p Value | |
|---|---|---|---|
| Men | 34 (85%) | 35 (81%) | 0.66 |
| Age (years) | 61 (11) | 62 (10) | 0.57 |
| Body mass index (kg/m2) | 28 (24–29) | 25 (24–29) | 0.26 |
| Current smokers | 15 (38%) | 27 (63%) | 0.02 |
| Hypertension | 11 (28%) | 18 (42%) | 0.17 |
| Diabetes mellitus | 4 (10%) | 3 (7%) | 0.71 |
| Preinfarction medication | |||
| Aspirin | 7 (18%) | 9 (21%) | 0.69 |
| β blockers | 7 (18%) | 4 (9%) | 0.34 |
| Calcium channel blockers | 4 (10%) | 4 (9%) | 1.00 |
| ACE inhibitors | 3 (8%) | 8 (19%) | 0.20 |
| Angiotensin II receptor blockers | 4 (10%) | 5 (12%) | 1.00 |
| Long-acting nitrates | 0 (0%) | 0 (0%) | – |
| Statins | 7 (18%) | 6 (14%) | 0.66 |
| Loop diuretics | 2 (5%) | 1 (2%) | 0.61 |
| Thiazide diuretics | 6 (15%) | 9 (21%) | 0.48 |
| Aldosterone antagonists | 0 (0%) | 0 (0%) | – |
| Clopidogrel | 0 (0%) | 0 (0%) | – |
| Procedural data | |||
| TIMI flow 0/1—post-pPCI | 1 (3%) | 2 (5%) | 1.00 |
| Area-at-risk (% of left ventricle) | 35 (28–42) | 34 (24–44) | 0.75 |
| LAD artery infarction | 27 (68%) | 10 (23%) | <0.0001 |
| Healthcare system delay (min)* | 115 (87–139) | 97 (82–140) | 0.24 |
| Achieved 70% ST segment resolution† | 26 (74%) | 30 (71%) | 0.78 |
| Treatment allocation | |||
| RIC+pPCI | 19 (48%) | 23 (53%) | 0.59 |
Data are mean (SD), median (IQR) or number (%).
*Data for healthcare system delay were missing for six patients.
†Data for achieved 70% ST segment resolution were missing for six patients.
LAD, left anterior descending; pPCI, primary percutaneous coronary intervention; RIC, remote ischaemic conditioning; TIMI, Thrombolysis In Myocardial Infarction.