oversensing

o·ver·sens·ing

(ō'vĕr-sens'ing),
Sensing of electrical or magnetic signals, which normally should not be sensed by a pacemaker, but result in inappropriate inhibition of the pacemaker's output.

oversensing

[-sen′sing]
the sensation of stimuli, such as magnetism or static electricity, that are not normally detected by the sense organs.

oversensing

Cardiac pacing Inhibition of a pacemaker to events other than those which the pacemaker was designed to sense–eg, myopotentials, electromagnetic interference, T-waves, crosstalk, etc. See Cardiac pacing.
References in periodicals archive ?
Myocardial ischemia-induced hyperacute T waves can potentially lead to T-wave oversensing in patients with implantable cardioverter defibrillators (ICD).
Initial ICD interrogation revealed 35 episodes of T-wave oversensing (resulting in spurious detection of ventricular fibrillation zone), 9 attempts of overdrive pacing, and 6 episodes of 35J shocks (Figure 2).
Additionally, new data released on SmartShock Technology showed lead fracture and T-wave oversensing algorithms can be safely applied without delaying detection of life-threatening arrhythmias.
Arrhythmias on surface ECG can be induced by undersensing, oversensing or failure to capture (Fig.
Of the almost 2,000 arrhythmias identified and recorded by the ICD devices in this study, 8% were classified as oversensing, 4% were sinus tachycardias, 18% were supraventricular arrhythmias, and 70% were ventricular arrhythmias.
The SecureSense RV Lead Noise Discrimination algorithm is important because it provides a way to distinguish oversensing due to lead issues from real episodes that warrant life-saving treatment.
T-wave Discrimination and Lead Noise Discrimination distinguish oversensing from deadly arrhythmias and withhold shock therapy when appropriate.
The Virtual ICD study modeled the effectiveness of six Medtronic-exclusive algorithms designed to distinguish between life threatening, non-life threatening arrhythmias or oversensing to reduce the delivery of inappropriate shocks.
1 mm tip-to-ring spacing reduces oversensing of far-field R-wave signals (an electrical signal originating in the lower chamber of the heart and sensed by the lead in the upper chamber of the heart).
1 mm tip-to-ring spacing, which reduces oversensing of far-field R-wave signals (an electrical signal originating in the lower chamber of the heart and sensed by the lead in the upper chamber of the heart).
Short tip-to-ring spacing is designed to minimize oversensing, helping to assure that appropriate therapy is delivered.