Electrocardiography subtraction method of detecting low-amplitude, high-frequency components (L-HFCs) within the QRS complex of patients with ventricular tachycardia.
| Title: | Electrocardiography subtraction method of detecting low-amplitude, high-frequency components (L-HFCs) within the QRS complex of patients with ventricular tachycardia. |
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| Authors: | Nanke T; Department of Internal Medicine, St Marianna University School of Medicine, Kawasaki, Japan. t2nanke@marianna-u.ac.jp; Nakazawa K; Arai M; Ryu S; Sakurai T; Matsumoto N; Sato C; Miyake F |
| Source: | Circulation journal : official journal of the Japanese Circulation Society [Circ J] 2002 Jul; Vol. 66 (7), pp. 649-54. |
| Publication Type: | Evaluation Study; Journal Article |
| Language: | English |
| Journal Info: | Publisher: Japanese Circulation Society Country of Publication: Japan NLM ID: 101137683 Publication Model: Print Cited Medium: Print ISSN: 1346-9843 (Print) Linking ISSN: 13469843 NLM ISO Abbreviation: Circ J Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: Kyoto, Japan : Japanese Circulation Society, [2002- |
| MeSH Terms: | Electrocardiography/*methods ; Tachycardia, Ventricular/*physiopathology; Myocardial Infarction/physiopathology ; Tachycardia, Ventricular/diagnosis ; Adult ; Aged ; Case-Control Studies ; Electronic Data Processing ; Female ; Humans ; Male ; Middle Aged |
| Abstract: | A new method of extracting the low-amplitude and high-frequency components (L-HFCs) was developed and this study investigated its usefulness in 86 subjects: 28 normal subjects (group 1) and 58 patients with a previous myocardial infarction (MI). The patients were classified into 3 groups: group 2 with 38 patients without ventricular tachycardia (VT), group 3 with 13 patients with non-sustained VT, and group 4 with 7 patients with sustained VT. The new electrocardiography (ECG) subtraction method, using a mathematical filtering procedure, was used instead of conventional complex filtering. The continuous L-HFCs within the QRS complex were analyzed using a Z-lead recording. The duration of the continuous L-HFCs was significantly longer in group 4 than in groups 1 (p |
| Entry Date(s): | Date Created: 20020724 Date Completed: 20030603 Latest Revision: 20191210 |
| Update Code: | 20260130 |
| DOI: | 10.1253/circj.66.649 |
| PMID: | 12135132 |
| Database: | MEDLINE |
Evaluation Study; Journal Article