Document Detail

Transtelephonic monitoring and transmission of stored arrhythmia detection and therapy data from an implantable cardioverter defibrillator.
MedLine Citation:
PMID:  7479174     Owner:  NLM     Status:  MEDLINE    
A new transtelephonic monitoring device designed for use with implantable cardioverter defibrillators (ICDs) was evaluated. It is capable of interrogating ICDs and transmitting the following data via telephone: programmed parameters (e.g., ventricular tachycardia [VT] and ventricular fibrillation [VF] detection, therapies), number of VT and VF episodes, identification of successful therapies, the 20 cycle lengths preceding the last episode detected, the 10 cycle lengths after the last delivered therapy, battery voltage, and real-time transmission of the patient's rhythm. Eighteen patients (mean age 64 +/- 17 years; 15 males) were implanted with an ICD and epicardial lead system. The patients who did not live near the primary hospital were provided with this transmitter and instructed to transmit monthly and whenever presyncope, syncope, or a shock were experienced. Five hundred ten episodes of spontaneous arrhythmia (495 VT, 15 VF) were detected in 14 of 18 patients in a 24-month period and the success of each therapy (antitachycardia pacing, cardioversion 0.4-34 J, defibrillation 34 J) was analyzed. The number of therapies delivered and their success (%) in terminating the arrhythmia were: 380 ramp/86%, 116 burst/84%, 119 cardioversion/57%, and 15 defibrillations/100%. Sixty-three (42%) of the 152 transmissions indicated an arrhythmia. Twenty-five (16%) of the 152 were transmitted because of symptoms. Sixteen (9.7%) of 165 VT episodes could not be terminated by the full set of programmed VT therapies. Analysis of the pre- and post-episode intervals along with the patient's transmitted rhythm indicated that sinus tachycardia or atrial fibrillation were likely responsible for these episodes.(ABSTRACT TRUNCATED AT 250 WORDS)
J G Fetter; M S Stanton; D G Benditt; J Trusty; J Collins
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  18     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  1995 Aug 
Date Detail:
Created Date:  1995-12-07     Completed Date:  1995-12-07     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1531-9     Citation Subset:  IM    
Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA.
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MeSH Terms
Atrial Fibrillation / diagnosis
Cardiac Pacing, Artificial
Defibrillators, Implantable*
Electric Countershock
Electric Power Supplies
Electrocardiography, Ambulatory
Equipment Design
Evaluation Studies as Topic
Feasibility Studies
Middle Aged
Monitoring, Ambulatory* / instrumentation
Syncope / diagnosis,  therapy
Tachycardia, Sinus / diagnosis
Tachycardia, Ventricular / diagnosis*,  therapy*
Telemetry* / instrumentation
Ventricular Fibrillation / diagnosis*,  therapy*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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