pacemaker failure

pace·mak·er fail·ure

failure of an artificial pacemaker to generate or deliver effective stimuli to the myocardium.
References in periodicals archive ?
These vary from microprocessor failure, risk of pacemaker failure, rapid pacing occurring when the device is being switched off and sudden cessation of output.
Anaesthetists should always be prepared to deal with pacemaker failure, which can occur due to device failure, lead failure, or failure of capture (due to acid-base disturbances, electrolyte changes or ischaemia, all of which alter pacing thresholds) (5,6).