Anterior mitral valve length is associated with ventricular tachycardia in patients with classical mitral valve prolapse
PACE - Pacing and Clinical Electrophysiology, cilt.33, sa.10, ss.1224-1230, 2010 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 33 Sayı: 10
- Basım Tarihi: 2010
- Doi Numarası: 10.1111/j.1540-8159.2010.02798.x
- Dergi Adı: PACE - Pacing and Clinical Electrophysiology
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1224-1230
- Anahtar Kelimeler: mitral valve prolapse, transthoracic echocardiography, anterior mitral valve length, QT dispersion, heart rate variability
- Sağlık Bilimleri Üniversitesi Adresli: Evet
Özet
Background: The aim of this study was to investigate the electrocardiographic and echocardiographic predictors of ventricular tachycardia (VT) in patients with classical mitral valve prolapse (MVP). Methods: Thirty patients (nine men and 21 women; mean age, 41.5 ± 15 years) in sinus rhythm with mitral valve prolapse who had VT in 24-hour Holter analysis and 30 patients with MVP without VT (eight men and 22 women; mean age, 43 ± 16 years) were included in this study. Transthoracic echocardiography, QT analyses from 12-lead electrocardiography, and 24-hour Holter electrocardiogram recordings were performed. Results: Mitral posterior leaflet thickness (0.48 ± 0.03 cm vs 0.43 ± 0,08 cm, P = 0.025), mitral anterior leaflet length (3.2 ± 0.24 cm vs 2.9 ± 0.36, P < 0.001), mitral posterior leaflet length (2.2 ± 0.3 cm vs 1.9 ± 0.35 cm, P = 0.01), left atrium anteroposterior diameter (4.2 ± 0.8 cm vs 3.5 ± 0.5 cm, P = 0.001), and mitral annulus circumference (15.7 ± 1.3 cm vs 14.6 ± 1.6 cm, P = 0.004) were increased significantly in MVP cases with VT. No significant difference was found between the cases with and without VT in terms of frequency- and time-domain analysis. QT dispersion (72 ± 18 ms vs 55 ± 15 ms, P = 0.0002) and corrected QT dispersion (QTcD) (76 ± 18 ms vs 55 ± 15 ms, P = 0.0002) were significantly increased in cases with VT compared with those without VT. Based on logistic regression analysis for MVP cases, in the case of VT, an enhancement in QTcD (P = 0.01) and the mitral anterior leaflet length (P = 0.003) were the independent predictors of VT. Conclusion: Mitral anterior leaflet length and enhanced QTcD are closely related with VT in patients with classical MVP. © 2010 Wiley Periodicals, Inc.