title: When Ventricular Safety Standby Does Not Work.
abstract: Dual chamber pacemakers have inbuilt advanced safety systems such as ventricular safety standby (crosstalk detection) to prevent ventricular oversensing resulting in inappropriate pacing inhibition. We describe a case where this safety mechanism does not reliably work and the management required to rectify the situation in an educational format.
authors.affiliation: Division of Cardiology, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada.
authors.forename: Shouvik K
authors.initials: SK
authors.lastname: Haldar
authors.affiliation: Division of Cardiology, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada.
authors.forename: Brianne
authors.initials: B
authors.lastname: Steed
authors.affiliation: Division of Cardiology, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada.
authors.forename: Sheila
authors.initials: S
authors.lastname: Watkins
authors.affiliation: Division of Cardiology, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada.
authors.forename: Krishnakumar
authors.initials: K
authors.lastname: Nair
mesh_terms: D000200:Action Potentials; D054537:Atrioventricular Block / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy*; D058406:Cardiac Resynchronization Therapy / Q000009:adverse effects; D058409:Cardiac Resynchronization Therapy Devices; D017147:Defibrillators, Implantable; D004554:Electric Countershock / Q000009:adverse effects / Q000295:instrumentation*; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006339:Heart Rate; D006801:Humans; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D013997:Time Factors; D016896:Treatment Outcome; D016277:Ventricular Function, Left; D016278:Ventricular Function, Right
keywords: clinical: implantable devices--biventricular pacing/defibrillation; clinical: implantable devices--pacemaker-bradyarrhythmias; crosstalk