title: Premature ICD battery depletion due to a defective lead adapter component: usefulness of extensive data logging.
abstract: Described herein is the usefulness of extensive data logging of third generation ICDs in a patient with premature ICD battery depletion due to a defective pace/sensing lead component. Due to noise artifacts, VT/VF detections occurred leading to inappropriate patient shock discharges and 2,267 internal charge dumps within 2 weeks. During manual manipulations at the ICD site, real-time intracardiac electrocardiogram and event markers revealed noise artifacts that were interpreted as VT/VF. Radiography confirmed slight movement of the pace/sensing lead pin out of the Y-adapter. Therefore, the design of adapter systems without screw fixation should be reviewed to ensure lead integrity. In the case of sudden increases in VT/VF recognition, defective sensing components must be considered.
authors.affiliation: Department of Internal Medicine, University Hospital Zürich, Switzerland.
authors.forename: R
authors.initials: R
authors.lastname: Candinas
authors.forename: K D
authors.initials: KD
authors.lastname: Hagspiel
authors.forename: D J
authors.initials: DJ
authors.lastname: MacCarter
authors.forename: U
authors.initials: U
authors.lastname: Niederhäuser
authors.forename: F W
authors.initials: FW
authors.lastname: Amann
authors.forename: M
authors.initials: M
authors.lastname: Turina
mesh_terms: D011211:Electric Power Supplies; D004868:Equipment Failure; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial