Table 1: Patient and event characteristics in 202 arrests with mechanical compression.

Variable

N = 202a

Age, y

67 (16)

Male

67% (136)

Witnessed Arrest

55%  (111)

Bystander CPR

32%  (65)

Initial rhythm

 

PEA/Asystole

79%  (160)

VF/VT

21%  (42)

Monitor mode during arrest

 

Manual Mode

23% (46)

AED (Semi-automated) Mode

66% (134)

Combination

11% (22)

EMS Response Time, minb

7 (5-9)

Any return of spontaneous circulation

28% (57)

Survival to hospital discharge

 

All Rhythms

7% (14)

PEA/Asystole

3% (4)

VF/VT

24% (10)

 

aResults are expressed as mean (SD) or percent (n) unless otherwise noted;

bMedian (IQR)

CPR = cardiopulmonary resuscitation; PEA = pulseless electrical activity; VF = ventricular fibrillation; VT = ventricular tachycardia; AED = automated external defibrillator; EMS = emergency medical services