User Manual corpuls
3
Appendix
ENG - Version 2.1 – P/N 04130.2 307
G ECG Analysis during Semi-automatic
Defibrillation (AED mode)
The ECG analysis is performed by a program which analyses the ECG in up to
three blocks of 4 seconds with the following result:
• shock recommended
• shock not recommended
The analysis is performed in each of the three blocks and these individual
assessments are subsequently weighed.
Maximum duration of ECG analysis (12 sec.) Result
Start
(4 sec.)
(4 sec.)
(4 sec.)
(8 sec.)
-34 Duration of the maximum ECG analysis
If two of the three blocks yield the result "Shock recommended", the overall
result is "Shock recommended". If two of the three blocks yield the result "shock
not recommended", the overall result is "Shock not recommended".
If the result "Shock recommended" is determined after 8 or 12 seconds, a
refractory time of 8 seconds begins. The result is not revised during the
refractory time, so the user can place the shock paddles on the patient and
release a shock without having to worry that readiness to shock will be
cancelled due to the disturbances caused by doing so. This refractory time can
only be interrupted if another analysis is started by the user.
To avoid wasting time, some procedures in the process will be accelerated if the
expected result is certain at an early stage:
ECG analysis Result
Shock recommended Shock recommended Shock recommended
(e.g. 200 Joules)
Start Block 1
(4 sec.)
Block 2
(4 sec.)
Refractory time
(8 sec.)
Charging Readiness to shock
-35 Acceleration of the ECG analysis process
If the first block yields the result "Shock recommended", the device will
immediately begin to charge energy, to reduce the amount of time from
beginning of analysis to readiness to shock.
If the overall outcome is already determined after two analysis blocks with a
positive result, the third will be omitted and readiness to shock will begin as
soon as the device has finished charging.
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