12
Technical Data
12.2 Defibrillation Waveform
Page 134
A
rt.
no.
: 0-48-
0227
Rev.:
g
DEFIGARD/PHYSIOGARD Touch 7
12.2 Defibrillation Waveform
applies only to the
DEFIGARD
®
Touch 7
.
Form
• Biphasic pulsed defibrillation waveform with fixed physiological optimum phase
durations
• Near stabilisation of the emitted energy in function with the patient resistance
using pulse-pause modulation depending on the measured patient resistance
(duty cycle 80%).
200 joule released in:
25
Ω
40
Ω
50
Ω
60
Ω
75
Ω
80
Ω
100
Ω
125
Ω
150
Ω
175
Ω
First phase
Max. current [A]
99.5
62.2
49.8
41.5
33.26
31.1
24.9
19.9
16.6
14.2
Mean current [A]
55.9
38.4
31.1
26.2
21.5
19.2
15.6
12.7
9.7
8.8
Duration [ms]
1.8
2.25
2.7
3.15
3.6
4.5
5.4
6.3
9.45
9.86
Second phase
Max. current [A]
36.6
28.5
23.5
20
17.1
14.3
11.8
9.9
6.6
6.5
Mean current [A]
18.6
16.4
14.7
12.6
11.5
9.4
8.2
7.1
4.9
4.9
Duration [ms]
2.25
2.700
2.700
3.150
3.150
3.600
3.600
4.050
4.050
4.050
Total shock duration [
ms
]
incl. 0.5 ms of
pause between first and second phase.
4.55
5.45
5.9
6.8
7.25
8.6
9.5
10.85
13.55
14.4
Energy delivered [J]
196
192
189
188
182
187
182
179
184
177
Curve at an impedance of 100
Ω
Overview on the measured values with regard to the impedance
Printout: Current – left y-axis, (
---
mean current calculated for each cycle)
Condenser voltage – right y-axis.
Current [A]
Voltag
e [V]
time [ms]
Note:
In the case of high patient impedance or some other specific usage cases, the energy delivered to the patient might be
lower than expected(e.g If patient impedance >= 150 Ohms, the rated energy level is set to 190J when 200J is selected)
