The occurrence of bundle branch block in acute myocardial infarction is important because it indicates that infarction may be extensive and may result in cardiac failure or death; however, the presence of bundle branch block is also important because it indicates seriously jeopardized AV conduction which could result in sudden extremely slow heart rates or asystolic arrest. The aim of the study...

To validate the accuracy of catheter endocardial mapping to localize the origin of ventricular tachycardia (VT), we compared cathether endocardial mapping with intraoperative epicardial and endocardial mapping of 24 morphologically distinct VTs in 18 patients undergoing surgery. Twelve had VT with left bundle branch block morphology and 12 had VT with right bundle branch block morphology. Cathe...

A twenty year follow up of a selected, community population with complete right and left bundle branch block is reviewed by comparative mortality analysis. In this population, where cases and controls were free of hypertension and heart disease at entry, the presence of complete right bundle branch block does not have excess mortality. Complete left bundle branch block exhibits excess total and...

OBJECTIVE Compare in-hospital outcome in patients with ST-elevation myocardial infarction with right versus left bundle branch block. METHODS RENASICA II, a national Mexican registry enrolled 8098 patients with final diagnosis of acute coronary syndrome secondary to ischemic heart disease. In 4555 STEMI patients, 545 had bundle branch block, 318 (58.3%) with right and 225 patients with left (...

概要 上室 性刺激 に伴 う心室 内変行伝導 の結果生 じる脚 ブ ロックは,一 般には生理的 なものであ り機 能的脚 ブロ ック(FBBB)1)~3)と いわれ る、 今回 このFBBBの 極形 である完全脚 ブロック(BBB)出 現 につ き50例 の正當PQ,正 QRS波 形例 を対 象 とし,心 房早期刺激法 と ヒス束心電図a)を使用 し検 討 し た.BBB出 現は50例 中31例(62%)に み られた.内 訳は右脚 ブロック(RBBB)21例,異 常 左軸 偏位 を伴 つた右 脚 ブロッ ク(RBBB+LAH)3例,異 常右軸 偏位 を伴つた右脚 ブロック(RBBB+LPH) 2例,左 脚 プロ ヅク(LBBB)3例, RBBB, LBBBの 両型 出現が2例 にみられ た, BBB出 現 の基 本条 件 としては よ り長 い心周期 の存 在,上 室性期外収縮(P...