دورية أكاديمية

Idiopathic ventricular arrhythmias originating from the papillary muscles in the left ventricle: prevalence, electrocardiographic and electrophysiological characteristics, and results of the radiofrequency catheter ablation.

التفاصيل البيبلوغرافية
العنوان: Idiopathic ventricular arrhythmias originating from the papillary muscles in the left ventricle: prevalence, electrocardiographic and electrophysiological characteristics, and results of the radiofrequency catheter ablation.
المؤلفون: Yamada T; Division of Cardiovascular Disease, University of Alabama at Birmingham, Birmingham, Alabama, USA. takumi-y@fb4.so-net.ne.jp, Doppalapudi H, McElderry HT, Okada T, Murakami Y, Inden Y, Yoshida Y, Kaneko S, Yoshida N, Murohara T, Epstein AE, Plumb VJ, Kay GN
المصدر: Journal of cardiovascular electrophysiology [J Cardiovasc Electrophysiol] 2010 Jan; Vol. 21 (1), pp. 62-9. Date of Electronic Publication: 2009 Sep 28.
نوع المنشور: Clinical Trial; Journal Article
اللغة: English
بيانات الدورية: Publisher: Blackwell Country of Publication: United States NLM ID: 9010756 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1540-8167 (Electronic) Linking ISSN: 10453873 NLM ISO Abbreviation: J Cardiovasc Electrophysiol Subsets: MEDLINE
أسماء مطبوعة: Publication: Malden, MA : Blackwell
Original Publication: Mt. Kisco, N.Y. : Futura Pub., c1990-
مواضيع طبية MeSH: Papillary Muscles*, Catheter Ablation/*statistics & numerical data , Electrocardiography/*statistics & numerical data , Tachycardia, Ventricular/*diagnosis , Tachycardia, Ventricular/*surgery , Ventricular Dysfunction, Left/*diagnosis , Ventricular Dysfunction, Left/*surgery, Adolescent ; Adult ; Aged ; Aged, 80 and over ; Alabama/epidemiology ; Comorbidity ; Female ; Humans ; Incidence ; Male ; Middle Aged ; Prevalence ; Reproducibility of Results ; Risk Assessment ; Risk Factors ; Sensitivity and Specificity ; Tachycardia, Ventricular/epidemiology ; Ventricular Dysfunction, Left/epidemiology ; Young Adult
مستخلص: Introduction: Idiopathic ventricular arrhythmias (VAs) can originate from the left ventricular (LV) papillary muscles (PAMs). This study investigated the prevalence, electrocardiographic and electrophysiological characteristics, and results of catheter ablation of these VAs, and compared them with other LV VAs.
Methods and Results: We studied 71 patients with VAs originating from the LV anterolateral and posteroseptal regions among 159 patients undergoing successful catheter ablation of idiopathic LV VAs. PAM VAs were uncommon, rare in a sustained form, and more common from the posterior papillary muscle (PPM) than anterior papillary muscle (APM). A younger age was a good predictor for differentiating left posterior fascicular VAs from PPM VAs. There were several electrocardiographic features that accurately differentiated PAM and LV fascicular VAs from mitral annular VAs. However, an R/S ratio < or =1 in lead V6 in the LV anterolateral region and a QRS duration >160 ms in the LV posteroseptal region were the only reliable predictors for differentiating PAM VAs from LV fascicular VAs. A sharp ventricular prepotential was recorded at the successful ablation site during 42% of the PAM VAs. Radiofrequency current with an irrigated or conventional 8-mm tip ablation catheter was required to achieve a lasting ablation of the PAM VA origins whereas that with a nonirrigated 4-mm tip ablation catheter produced excellent results in LV fascicular and mitral annular VAs.
Conclusions: There are differences in the electrocardiographic and electrophysiological features among VAs originating from these regions that are helpful for their diagnosis and effective catheter ablation.
تواريخ الأحداث: Date Created: 20091002 Date Completed: 20100924 Latest Revision: 20100521
رمز التحديث: 20240628
DOI: 10.1111/j.1540-8167.2009.01594.x
PMID: 19793147
قاعدة البيانات: MEDLINE
الوصف
تدمد:1540-8167
DOI:10.1111/j.1540-8167.2009.01594.x