Undersensing | definition of undersensing by Medical dictionary
Nonsensing of the intracardiac atrial or ventricular depolarization signal by a pacemaker.
undersensing /un·der·sens·ing/ (-sens″ing) missed sensing of cardiac electrical signals by an artificial pacemaker, resulting in too frequent or irregular delivery of stimuli.
undersensing Cardiology Failure of a pacemaker to sense the P or R waves, which may cause the pacemaker to emit inappropriately timed impulses. See Pacemaker.
References in periodicals archive
Arrhythmias on surface ECG can be induced by undersensing
, oversensing or failure to capture (Fig.
By separating the sensing electrodes from the one that delivers energy, the lead design also protects against post-shock undersensing
, which has been reported with other single-lead transvenous lead systems.