Undersensing of VF in a patient with optimal R wave sensing during sinus rhythm

L.R.C. Dekker; T.A.M. Schrama; F.H.L. Steinmetz; R. Tukkie

doi:10.1111/j.1540-8159.2004.00542.x

Undersensing of VF in a patient with optimal R wave sensing during sinus rhythm

L.R.C. Dekker, T.A.M. Schrama, F.H.L. Steinmetz, R. Tukkie

Research output: Contribution to journal › Article › Academic › peer-review

26 Citations (Scopus)

Abstract

We describe a case of potentially fatal undersensing of VF by a third generation ICD with predetermined automatic gain control. In this patient, ventricular sensing was optimal, as R wave amplitudes during sinus rhythm were at least 16 mV. Cyclical, high amplitude signals during VF elevated the sensing floor to such an extent that complete undersensing of subsequent lower amplitude local electrograms occurred. This led to bradypacing and complete ICD therapy failure. Therefore, high R wave amplitudes during sinus rhythm do not warrant flawless sensing during VF.

Original language	English
Pages (from-to)	833-4
Number of pages	2
Journal	Pacing and Clinical Electrophysiology : PACE
Volume	27
Issue number	6 Pt 1
DOIs	https://doi.org/10.1111/j.1540-8159.2004.00542.x
Publication status	Published - Jun 2004
Externally published	Yes

Keywords

Aged
Aged, 80 and over
Defibrillators, Implantable
Electrocardiography
Equipment Failure Analysis
Heart Rate
Humans
Male
Microcomputers
Sensitivity and Specificity
Software
Ventricular Fibrillation

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Cite this

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title = "Undersensing of VF in a patient with optimal R wave sensing during sinus rhythm",

abstract = "We describe a case of potentially fatal undersensing of VF by a third generation ICD with predetermined automatic gain control. In this patient, ventricular sensing was optimal, as R wave amplitudes during sinus rhythm were at least 16 mV. Cyclical, high amplitude signals during VF elevated the sensing floor to such an extent that complete undersensing of subsequent lower amplitude local electrograms occurred. This led to bradypacing and complete ICD therapy failure. Therefore, high R wave amplitudes during sinus rhythm do not warrant flawless sensing during VF.",

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AU - Dekker, L.R.C.

AU - Schrama, T.A.M.

AU - Steinmetz, F.H.L.

AU - Tukkie, R.

PY - 2004/6

Y1 - 2004/6

N2 - We describe a case of potentially fatal undersensing of VF by a third generation ICD with predetermined automatic gain control. In this patient, ventricular sensing was optimal, as R wave amplitudes during sinus rhythm were at least 16 mV. Cyclical, high amplitude signals during VF elevated the sensing floor to such an extent that complete undersensing of subsequent lower amplitude local electrograms occurred. This led to bradypacing and complete ICD therapy failure. Therefore, high R wave amplitudes during sinus rhythm do not warrant flawless sensing during VF.

AB - We describe a case of potentially fatal undersensing of VF by a third generation ICD with predetermined automatic gain control. In this patient, ventricular sensing was optimal, as R wave amplitudes during sinus rhythm were at least 16 mV. Cyclical, high amplitude signals during VF elevated the sensing floor to such an extent that complete undersensing of subsequent lower amplitude local electrograms occurred. This led to bradypacing and complete ICD therapy failure. Therefore, high R wave amplitudes during sinus rhythm do not warrant flawless sensing during VF.

KW - Aged

KW - Aged, 80 and over

KW - Defibrillators, Implantable

KW - Electrocardiography

KW - Equipment Failure Analysis

KW - Heart Rate

KW - Humans

KW - Male

KW - Microcomputers

KW - Sensitivity and Specificity

KW - Software

KW - Ventricular Fibrillation

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DO - 10.1111/j.1540-8159.2004.00542.x

M3 - Article

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SN - 0147-8389

VL - 27

SP - 833

EP - 834

JO - Pacing and Clinical Electrophysiology : PACE

JF - Pacing and Clinical Electrophysiology : PACE

IS - 6 Pt 1

ER -

Undersensing of VF in a patient with optimal R wave sensing during sinus rhythm

Abstract

Keywords

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