TRANSIENT DATA STREAM DISSOCIATION IN COMPUTERIZED DATA-ACQUISITION SYSTEM MASQUERADING AS A SENSING ABNORMALITY

Citation
La. Nair et al., TRANSIENT DATA STREAM DISSOCIATION IN COMPUTERIZED DATA-ACQUISITION SYSTEM MASQUERADING AS A SENSING ABNORMALITY, PACE, 20(10), 1997, pp. 2500-2503
Citations number
7
Journal title
PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY
ISSN journal
01478389 → ACNP
Volume
20
Issue
10
Year of publication
1997
Part
1
Pages
2500 - 2503
Database
ISI
SICI code
0147-8389(1997)20:10<2500:TDSDIC>2.0.ZU;2-6
Abstract
During testing of a CPI model 1715 ICD, an apparent sensing abnormalit y was noted following shock delivery for VF. Close inspection of the r ecording prior to the defibrillation attempt revealed that the surface leads spontaneously lost 848 ms of data while the event marker was un affected. Computer simulations revealed that an inadequate buffer size for the amplified (surface ECG) data was the likely source of data lo ss. It is important to recognize that a discordance between surface le ads and event marker may represent an abnormality in the data acquisit ion system and simulate an ICD or lead malfunction.