| Exploring QT interval changes as a precursor to the onset of ventricular fibrillation/tachycardia. | |
| | |
MedLine Citation:
|
PMID: 19376527 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
In the present study, we have retrospectively analyzed the corrected QT (QTc) interval before spontaneous episodes of sudden cardiac arrest in patients with a wearable cardioverter defibrillator. Corrected QT interval was measured for all normal beats from 32 recordings of baseline rhythm and compared to normal rhythm before a paired spontaneous cardiac arrhythmia. Before arrhythmia, the QTc (505 +/- 73 ms) was not significantly longer than the baseline rhythm (497 +/- 73 ms) (P = .23). Considering ventricular tachycardia (VT) events only (12 patients), event QTc (526 +/- 75 ms) was not significantly longer than baseline QTc (520 +/- 74 ms) (P = .41). Considering fast VT/ventricular fibrillation (VF) events only (20 patients), event QTc (494 +/- 70 ms) was not significantly longer than baseline QTc (483 +/- 71 ms) (P = .26). The influence of QTc as a measure to indicate an impending VT event in a variety of VT/VF patients remains unclear. |
| | |
Authors:
|
Aaron Lewicke; Katherine Bellor; Katie Dillon; Thomas Kaib; Steven Szymkiewicz; Stephanie Schuckers |
Related Documents
:
|
15216077 - Pituitary tumor, qt prolongation and ventricular arrhythmia. 17993337 - Identifying coronary artery flow reduction and ischemia using quasistationary qt/rr-int... 19660947 - Structural determinants for histamine h(1) affinity, herg affinity and qtc prolongation... 11329107 - Effect of angiotensin-converting enzyme therapy on qt interval dispersion. 2783527 - The hibernating myocardium. 11543057 - Hemodynamic assessment of ischemic stroke with near-infrared spectroscopy. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-04-18 |
Journal Detail:
|
Title: Journal of electrocardiology Volume: 42 ISSN: 1532-8430 ISO Abbreviation: J Electrocardiol Publication Date: 2009 Jul-Aug |
Date Detail:
|
Created Date: 2009-06-22 Completed Date: 2009-09-03 Revised Date: 2009-11-11 |
Medline Journal Info:
|
Nlm Unique ID: 0153605 Medline TA: J Electrocardiol Country: United States |
Other Details:
|
Languages: eng Pagination: 374-9 Citation Subset: IM |
Affiliation:
|
Department of Electrical and Computer Engineering, Clarkson University, Potsdam, NY 13699, USA. lewickat@clarkson.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Algorithms* Diagnosis, Computer-Assisted / methods* Electrocardiography / methods* Female Humans Male Middle Aged Reproducibility of Results Sensitivity and Specificity Tachycardia, Ventricular / diagnosis* Ventricular Fibrillation / diagnosis* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Impressive ST-segment elevation during dobutamine stress echocardiography in a patient with normal c...
Next Document: Expression of hippocampal brain-derived neurotrophic factor and its receptors in Stanley consortium ...