Takabayashi Shin, Shimpo Hideto, Mitani Yoshihide, Komada Yoshihiro
Department of Thoracic and Cardiovascular Surgery, Mie University Graduate School of Medicine, Tsu, Mie Japan.
Pediatr Cardiol. 2006 Jul-Aug;27(4):485-9. doi: 10.1007/s00246-006-1234-2. Epub 2006 Jul 6.
A 1.8-year-old male required a conventional DDD pacemaker for an atrioventricular block after congenital heart surgery. Five years later, heart failure due to left ventricular (LV) dyssynchrony progressed and we performed cardiac resynchronization therapy (CRT). Long-term echocardiographic follow-up showed that LV shortening fraction had improved within the first year after CRT, and LV end diastolic dimension had decreased after the first year. During LV remodeling (1-24 months after CRT), the QRS duration shortened without a change in the JT and T (peak-end) interval. The New York Heart Association class improved from III to I during the 2.3-year follow-up.
一名1.8岁男性在先天性心脏手术后因房室传导阻滞需要植入传统的DDD起搏器。五年后，由于左心室（LV）不同步导致的心力衰竭进展，我们进行了心脏再同步治疗（CRT）。长期超声心动图随访显示，CRT后第一年内心室缩短分数有所改善，第一年过后左心室舒张末期内径减小。在左心室重塑期间（CRT后1至24个月），QRS时限缩短，而JT和T（峰-末）间期无变化。在2.3年的随访期间，纽约心脏协会心功能分级从III级改善至I级。
