Table
2: Comparison
of chest compression quality and characteristics of pausesa in the manual and
mechanical phases of 202 device-assisted arrests.
Variable |
Manual Phaseb |
Mechanical Phaseb |
p-valuec |
CPR
Timed (min:sec) |
3:13
(1:40-4:53) |
23:24
(13:22-33:22) |
<
0.001 |
Compression
rate (per min) |
121
(109-131) |
102
(102-102) |
<
0.001 |
Compression
fractiond
(%) |
77
(68-85) |
89
(86-92) |
<
0.001 |
Pauses |
|
|
|
Duration
(sec) |
|
|
|
All
Pauses |
9.9
(7.5-15.0) |
13.7
(10.8-18.0) |
<
0.001 |
Peri-Shock
Pauses |
22.0
(18.0-28.0) |
24.0
(19.5-30.0) |
0.72 |
Non-Shock
Pauses |
9.1
(6.8-13.0) |
13.0
(10.4-16.8) |
<
0.001 |
aThe
main pause for application of the mechanical device was excluded from analysis;
bResults are
expressed as median (IQR);
cp-value
for Wilcoxon signed -rank test;
dSee
Methods for definition;
CPR = cardiopulmonary resuscitation