Stratos LV/LV-T Technical Manual 121

4. Real-Time IEGM

Stratos CRT-Ps offer the option of real-time transmission of the

unfiltered intracardiac electrogram (IEGM). In the Stratos devices, it is possible to simultaneously transmit the IEGM from all three channels as well as the IEGM marker channel. The IEGM simultaneously recorded in the four channels at a scan rate of 256 Hz. All the markers from the three channels are also transmitted together with the IEGM. The IEGM and markers together with the surface ECG can be displayed directly on the screen of the programmer, on a connected ECG recorded or they can be printed by the programmer printer.

NOTE:

When interpreting IEGM, any limitations that result from applying the programmer head (which contains the magnet) must always be considered.

4.1IEGM Recordings

The recording of the intracardiac information over a short period of time before the tachycardic phase provides valuable details about the arrhthmogenesis of the tachycardia. An IEGM recoding can be triggered by the following events:

•High atrial rates (AF recording)

•Mode switching recording

•High ventricular rate recording

•Patient-triggered recording

Every instantaneous recording provides information from the recording period about:

•The type of triggering event

•Time and date of the recording

•Sensed and paced events in the atrium and the ventricle including the IEGM, markers and events during the refractory period an in the PMT protection window.

•Duration of the triggering events