User Manual Part 2

TAC HYARRHYTHMIA THERAPY

VENTRICULAR SHOCK THERAPY AND PARAM ETER S

4-23

CAUTION: For IS-1/DF-1 leads, never change the shock waveform

polarity by physically switching the lead anodes and cathodes in the pulse

generator header—use the programmable Polarity feature. Device damage

or nonconversion of the arrhythmia post-operatively may result if the polarity

is switched physically.

Biphasic

PW1

PW2

PW = Pulse Width

PW2 = PW1 x 0.66

V2 = V3

Figure 4-21. Biphasic waveform

–

Initial polarity Reverse polarity

Figure 4-22. Polarity of shock deliv ery

Committed Shock/Reconﬁrmation of th e Ventricular Arrhythmia

Committed Shock/Reconﬁrm ation refers to the monitoring performed by the

pulse generator before delivery of a ventricular shock.

If the patient is subject to non-sustained a rrhythmias, rec onﬁrmation may be

desirable in order to prevent delivery of unnecessary shocks to the patient.

- DRAFT -