If a patient with an implantable cardioverter-defibrillator (ICD) has a change in their health or medications that may interfere with how his/her device works, then a Non-Invasive Program Stimulation (NIPS) may be performed. The test is done to insure that the device appropriately senses abnormal fast heart beats and attempts to treat them with either overdrive pacing or defibrillation shock.
The heart is stimulated on purpose via the device to evaluate the ability of the ICD to deliver a shock or rapid pacing sequence to restore a normal rhythm. If needed, your doctor can then make adjustments to your ICD programming.
Anesthesia is used during the procedure to ensure adequate sedation. The patient can usually go home on the same day as the procedure.