96 Stratos LV/LV-T Technical Manual

The following diagnostic functions are available to tailor rate adaptive pacing for the individual patient.

2.14.2 Sensor Gain

The sensor gain defines the slope of the linear function between exertion and pacing rate. It designates a factor by which the electric signal of the sensor is amplified prior to the signal processing stages. The programmable amplification permits adaptation of the individually programmed sensor gain to the desired rate response. The optimum setting is achieved when the desired maximum pacing rate during exertion is reached during maximum exercise levels. The rate increase, rate decrease and maximum sensor rate settings must be checked for their suitability with respect to the individual patient before adjusting the sensor gain.

If the sensor-driven rate is not sufficient at high levels of exertion the sensor gain setting should be increased. The sensor gain should be reduced if high pacing rates are obtained at low levels of exertion (see Figure 6).

Figure 6 Influence of sensor gain on the rate response.

2.14.3 Automatic Sensor Gain

Stratos CRT-Ps offer an Automatic Sensor Gain setting, which allows the physician to have the Sensor Gain parameter adjusted automatically.