An Appropriate Defibrillation Threshold Obtained by the Combined Connection Between Two Shock Leads and ICD Generator.
Summary of "An Appropriate Defibrillation Threshold Obtained by the Combined Connection Between Two Shock Leads and ICD Generator."
A 60-year-old man with arrhythmogenic right ventricular cardiomyopathy was readmitted for the battery exchange of his implantable cardioverter-defibrillator (ICD). Since (i) he had been treated with a dual-coil shock lead (Sprint Fidelis, Medtronic) and (ii) pre-operative venography showed mild collateral flow to the left subclavian vein, a single-coil lead was additionally implanted. However, the single-coil defibrillation system was unable to terminate the induced ventricular fibrillation (VF), thus dual defibrillation shock pathways were created using the connection to the superior vena cava coil of the Fidelis lead. The combined connections of the two shock leads provided an appropriate margin of the defibrillation threshold.
Affiliation
Division of Cardiology, Niigata University Graduate School of Medical and Dental Sciences, Japan.
Journal Details
This article was published in the following journal.
Name: Internal medicine (Tokyo, Japan)
ISSN: 1349-7235
Pages: 2815-8
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22082895
- DOI: http://dx.doi.org/
Medical and Biotech [MESH] Definitions
Hsp40 Heat-shock Proteins
A family of heat-shock proteins that contain a 70 amino-acid consensus sequence known as the J domain. The J domain of HSP40 heat shock proteins interacts with HSP70 HEAT-SHOCK PROTEINS. HSP40 heat-shock proteins play a role in regulating the ADENOSINE TRIPHOSPHATASES activity of HSP70 heat-shock proteins.
Differential Threshold
The smallest difference which can be discriminated between two stimuli or one which is barely above the threshold.
Severe Combined Immunodeficiency
Group of rare congenital disorders characterized by impairment of both humoral and cell-mediated immunity, leukopenia, and low or absent antibody levels. It is inherited as an X-linked or autosomal recessive defect. Mutations occurring in many different genes cause human Severe Combined Immunodeficiency (SCID).
Shock, Traumatic
Shock produced as a result of trauma.
Hsp20 Heat-shock Proteins
A subfamily of small heat-shock proteins that are closely related to ALPHA B-CRYSTALLIN. Hsp20 heat-shock proteins can undergo PHOSPHORYLATION by CYCLIC GMP-DEPENDENT PROTEIN KINASES.
PubMed Articles
High-energy defibrillation increases the dispersion of regional ventricular repolarization.
PURPOSE: This study evaluated the effects of shock energy on the dispersion of regional ventricular repolarization (DRVR), post-shock rhythm and sinus recovery time (SRT), and the relationship between...
The recommendations for electrical therapies described in this section are designed to improve survival from SCA and life-threatening arrhythmias. Whenever defibrillation is attempted, rescuers must c...
BACKGROUND: In 2005, the AHA changed the treatment recommendation for shockable rhythms from 3 transthoracic stacked-shocks to a single shock followed by immediate chest compressions. The stacked-shoc...
A Case of Inefficient Defibrillation During Thoracotomy.
Abstract We describe the case of an accidental intraoperative ventricular fibrillation that could not be interrupted by a 35-J shock fired by an implantable cardioverter defibrillator (ICD). We bel...
Increase in internal defibrillation threshold during acute myocardial infarction.
A 67-year-old man suffered an acute anteroseptal myocardial infarction complicated by multiple episodes of ventricular fibrillation, which were not systematically defibrillated by maximum, internal 35...
Clinical Trials
AED Use in Out-of-Hospital Cardiac Arrest: A New Algorithm Named "One Shock Per Minute"
The aim of the trial is to evaluate a new AED algorithm that proposes a new timeline between the time devoted to administer a defibrillation shock, and the time devoted to chest compressio...
Right Ventricular Defibrillation Lead Select Site Study
This study will compare single coil right ventricular defibrillation leads for implanted cardioverter/defibrillators (ICDs) in the apical and high septal locations. It is hypothesized tha...
Selection of Shock Energy in Out-Of-Hospital Cardiac Arrest
Sudden cardiac death is the most frequent cause of death in industrialized countries. The most efficient interventiont in ventricular fibrillation is defibrillation in an appropriate timel...
High Low Biphasic Energy Defibrillation (HiLoBED)
This inhospital study aims to compare the efficacy of high-versus low-energy biphasic shocks in order to determine the optimal level for defibrillation. Time is the essence when attending...
The ASSURE Study will evaluate shock conversion performance when programming the first shock of an implantable cardioverter-defibrillation (ICD) is based on an implant test consisting of e...
