Table 2.
Chest compression results between the manual chest compression group and chest compression with automatic chest compression device group
| Chest compression outcomes | Manual group (n=39) |
Device group (n=41) |
P-value |
|---|---|---|---|
| Time to stop chest compression, seconds | 179.67 (50.81) | 223.93 (36.53) | <0.001 |
| Compression rate/minute | |||
| 0–1 minute | 127.41 (27.77) | 108 (9.45) | <0.001 |
| 1–2 minute | 90.74 (51.57) | 108.55 (9.93) | <0.001 |
| 2–3 minute | 44.21 (52.89) | 97.9 (30.74) | 0.190 |
| 3–4 minute | 90 (39.11) | <0.001 | |
| Compression depth after 2 minute, mm | 56.42 (6.42) | 54.25 (5.32) | 0.052 |
| Overall compression depth, mm | 49.21 (6.04) | 46.35 (6.40) | 0.045 |
| Percentage of shallow compression | |||
| 0–1 minute | 25.90 (35.55) | 34.39 (35.21) | 0.273 |
| 1–2 minute | 46.49 (39.88) | 61.22 (41.77) | 0.159 |
| 2–3 minute | 55.14 (44.46) | 72.69 (37.81) | 0.343 |
| 3–4 minute | 62.18 (44.21) | 80.23 (33.70) | 0.106 |
| Percentage of compression with incorrect hand position | |||
| 0–1 minute | 10.43 (25.37) | 31.41 (41.59) | 0.632 |
| 1–2 minute | 18.53 (31.67) | 30.82 (41.64) | 1.000 |
| 2–3 minute | 17.18 (33.78) | 23.37 (37.53) | 1.000 |
| 3–4 minute | 23.44 (39.87) | 19.29 (35.24) | 0.642 |
| Percentage of incomplete release | |||
| 0–1 minute | 6.78 (18.59) | 0.90 (3.75) | 0.999 |
| 1–2 minute | 7.13 (19.82) | 2.32 (9.92) | 0.999 |
| 2–3 minute | 6.25 (20.35) | 1.92 (10.59) | 0.999 |
| 3–4 minute | 5.51 (15.43) | 0.16 (0.81) | 0.999 |
Note: Data presented as mean (SD).
Abbreviation: SD, standard deviation.