What is the primary purpose of increasing the sensitivity in cardiac devices?

The primary purpose of increasing the sensitivity in cardiac devices is indeed related to the detection capabilities of the device. By enhancing sensitivity, cardiac devices can better detect smaller or more distant signals, which often include far-field event signals, rather than specifically targeting the elimination of T wave sensing.

When sensitivity is increased, the device becomes more responsive to electrical signals produced by the heart, making it possible to recognize activity that might otherwise go undetected. This is crucial in ensuring that true cardiac events are captured, particularly in patients with weaker cardiac signals. The option mentioning eliminating T wave sensing pertains more to specificity rather than the general enhancement of sensing capability.

It's also noteworthy that increasing sensitivity can help in mitigating issues such as cross talk in pacemakers, where signals from one lead may be incorrectly interpreted as signals from another lead. However, the main aim remains to amplify the device's ability to perceive relevant cardiac activity. In general, improved sensitivity leads to more accurate and effective cardiac monitoring and pacing.