INTRODUCTION The knowledge of the branching pattern of external branch of the superior laryngeal nerve and its relationship with the superior thyroid artery is the key point for identifying the external branch of the superior laryngeal nerve during surgeries of the neck. CASE PRESENTATION During routine dissection of the left head and neck region of a 50 years old female cadaver, we observed ...

Simultaneous tracings of right and left ventricular leads were taken in 6 dogs with experimentally produced left bundle-branch block, and in 30 clinical cases of left ventricular hypertrophy. In the experimental study it was found that the initial phase of the QRS complex in the right epicardial lead did not change its configuration or its duration after the production of left bundle-branch blo...

The main ventricular conducting fascicles were slightly injured in anesthetized dogs by gently scratching them with a blunt needle introduced through the ventricular wall. Initially the bundle branch block that resulted was rate independent (stage 1). When conduction returned to normal, both premature atrial and vagal stimulation reproduced the bundle branch block (stage 2). During stage 2 (5-1...

BACKGROUND Cervical therapeutic intraarticular facet joint injections, therapeutic medial branch blocks, and radiofrequency neurotomy have been applied in managing chronic neck pain of cervical facet joint origin. However, the effectiveness of these modalities continues to be debated. The purpose of this study was to determine the clinical effectiveness of therapeutic cervical medial branch blo...

Complete right bundle branch block manifests with a rSR' configuration in right orientated leads and a duration of 0.12 sec or longer. Incomplete right bundle branch block is perceived as this classic rSr' configuration and a duration of less than 0.12 sec. This presentation reflects the early development of right bundle branch block which first manifests with a hitherto undescribed sign, namel...

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...

It is the object of this paper to investigate the modifications of the electrocardiographic pattern of cardiac infarction caused by the simultaneous presence of right bundle branch block, and to describe the cardiographic signs on which the diagnosis of infarction can be made in the presence. of right branch block. The cardiogram of right branch block shows added changes characteristic of infar...

We describe a medial midline portal between the tendons of extensor hallucis longus and tibialis anterior for arthroscopy of the ankle. We dissected 20 cadaver specimens to compare the risk of neurovascular injury using this approach with that of using standard arthroscopic portals. Compared with the anterocentral portal, the medial midline was a mean of 11.2 mm further from the nearest branch ...

The facial nucleus of the Japanese monkey was divided cytoarchitectonically into the ventral, medial, intermediate, dorsal and lateral divisions. When horseradish peroxidase (HRP) was applied to the inferior labial, cervical or posterior auricular branch of the facial nerve, HRP-labeled neurons were seen in the lateral, ventral or medial division of the facial nucleus, respectively. After apply...

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...