Table 1 Patient characteristics and timings
Total population n = 870 | Immediate MMT n = 614 (70.6) | Delayed MMT n = 256 (29.4) | p value | Missing values | |
|---|---|---|---|---|---|
Age, years | 72 [57–84] | 69 [53–83] | 78 [66–87] | < 0.001 | 0 |
Sex, male | 466 (53.6) | 331 (53.9) | 135 (52.7) | 0.75 | 0 |
Comorbidities | |||||
Cardiovascular | 536 (61.6) | 358 (58.3) | 178 (69.5) | 0.002 | 0 |
Neurological | 196 (22.5) | 130 (21.2) | 66 (25.8) | 0.14 | 0 |
Respiratory | 332 (38.2) | 229 (37.3) | 103 (40.2) | 0.42 | 0 |
Cancer | 167 (19.2) | 114 (18.6) | 53 (20.7) | 0.51 | 0 |
Living in a care home | 106 (12.2) | 60 (9.8) | 46 (18.0) | < 0.001 | 0 |
Active smoker | 155 (17.8) | 116 (18.9) | 39 (15.2) | 0.21 | 0 |
High level of dependency | 91 (11.0) | 50 (8.6) | 41 (16.3) | < 0.001 | 39 (4.5) |
Caller status, health professional | 190 (21.9) | 125 (20.5) | 65 (25.4) | 0.11 | 4 (0.5) |
Time from call to BLS-team dispatcha, seconds | 120 [45–247] | 110 [25–215] | 153 [71–307] | < 0.001 | 0 |
Type of MMT, helicopter | 9 (1.0) | 5 (0.8) | 4 (1.6) | 0.68 | 0 |
Time from call to MMT dispatch, min | 7.9 [4.5–25.2] | 5.6 [3.9–8.8] | 30.7 [26.4–36.1] | < 0.001 | 0 |
Time from call to MMT arrival at the scene, min | 81.0 [65.4–104.0] | 72.5 [61.1–90.6] | 103.7 [88.4-122.3] | < 0.001 | 243 |
Time from MMT dispatch to arrival at the scene, min | 8.7 [5.8–11.6] | 8.3 [5.5–11.2] | 9.4 [6.8–13.0] | 0.008 | 317 (36.4) |
Time from MMT dispatch to the end of the intervention, min | 89 [69–110] | 87 [68–109] | 91 [76–115] | 0.014 | 36 (4.1) |
MMT clinical evaluation | |||||
Systolic blood pressure, mmHg | 140 [120–166] | 141 [120–167] | 134 [110–163] | 0.002 | 23 (2.6) |
Heat rate, beats/min | 101 [85–120] | 100 [84–120] | 103 [86–123] | 0.23 | 37 (4.2) |
O2 saturation, % | 90 [78–97] | 92 [80–98] | 86 [75–95] | < 0.001 | 25 (2.8) |
Respiratory rate | 32 [25–40] | 32 [25–40] | 32 [25–40] | 0.8 | 435 (50) |
Temperature, Celsius degree | 36.8 [36.1–37.3] | 36.7 [36.1–37.2] | 36.8 [36.1–37.6] | 0.22 | 386 (44.3) |
Glasgow coma scale | 15 [14–15] | 15 [15–15] | 15 [14–15] | 0.006 | 41 (4.7) |
Diaphoresis | 161 (27.3) | 119 (28.3) | 42 (25.0) | 0.42 | 281 (32.3) |
Signs of respiratory distressb | 351 (48.8) | 240 (47.2) | 111 (52.4) | 0.21 | 150 (17.2) |
Cyanosis | 43 (4.9) | 34 (5.5) | 9 (3.5) | 0.21 | 0 |
Mottled Skin | 51 (5.9) | 35 (5.7) | 16 (6.2) | 0.75 | 0 |
Unable to complete sentences | 127 (28.2) | 94 (29.5) | 33 (25.0) | 0.36 | 419 (48.2) |
Chest pain | 125 (18.8) | 89 (19.1) | 36 (18.1) | 0.77 | 207 (23.8) |