Table 1 Baseline characteristics according to the mode of transportation (ambulance vehicle or helicopter) and according to the distance from the scene of event to the PCI-center (Hospital with primary percutaneous coronary intervention facilities)
From: Earlier reperfusion in patients with ST-elevation Myocardial infarction by use of helicopter
Group A (0–25 km.) n = 98 | Group B (26–50 km.) n = 102 | Group C (51–75 km.) n = 101 | Group D (>75 km.) n = 75 | Group E n = 22 | All patients N = 398 | |
|---|---|---|---|---|---|---|
Field-triage to PCI-center,% | 89% (87/98) | 93% (95/102) | 83% (84/101) | 75% (56/75) | 73% (16/22) | 85% (338/398) |
Distance, scene of event to PCI-center, km † | 8 (5–14) | 39 (33–47) | 61 (53–67) | 114 (87–123) | 104 (79–128)‡ | 50 (26–74) |
- Distance among patients field-triaged | 8 (5–13) | 38 (32–47) | 60 (53–67) | 115 (102–127) | 115 (82–127) | 49 (23–69) |
- Distance among patients not field-triaged | 12 (7–20) | 41 (39–47) | 67 (56–68) | 92 (86–122) | 90 (62–129) | 67 (42–88) |
Health Care System delay, all patients, minutes | 82 (70–104) | 90 (80–104) | 104 (92–122) | 141 (125–166) | 116 (94–137) | 100 (85–134) |
- System delay among patients field-triaged | 78 (68–93) | 89 (79–100) | 99 (91–111) | 141 (126–156) | 107 (94–124) | 94 (82–119) |
- System delay among patients not field-triaged | 161 (141–200) | 188 (132–248) | 192 (142–220) | 160 (120–199) | 154 (125–165) | 168 (136–216) |
Door-to-balloon delay, minutes | 34 (24–49) | 28 (22–37) | 26 (23–38) | 31 (23–46) | 37 (24–60) | 29 (23–43) |