[Studies on functional bundle branch block by the His bundle electrocardiogram and atrial extrastimulus method (author's transl)].
نویسنده
چکیده
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(PAC)(A2)が 存在 し,適 当な連結 期を有 して いる事:,適 当なfast AV conductionの 存在,さ らに脚 自体 につ いては右脚 と左脚 の不応期 または伝 導
منابع مشابه
Effects of alternating cycle lengths on refractoriness of the His-Purkinje system.
The effects of alternating cycle lengths (bigeminal rhythm) on His-Purkinje system refractoriness were studied in 14 patients using His bundle and right bundle recordings. Programmed atrial stimulation at constant cycle length (method I) was scanned using the atrial extrastimulus technique (A2) and compared with an atrial cycle length of identical duration coupled to A2 on alternate beats (meth...
متن کاملDetermination of His-Purkinje refractoriness in man with His bundle pacing.
Consistent His bundle pacing was accomplished in one of 60 consecutive patients. Intracardiac electrophysiologic studies in this patient revealed rapid atrioventricular nodal conduction (AH = 55 msec). While the relative refractory period of the His-Purkinje system as a whole determined by His bundle pacing (using the extrastimulus technique) was identical to that determined by atrial pacing, c...
متن کاملAtrial ventricular conduction system in left bundle-branch block with normal QRS axis.
In nine patients with left bundle-branch block (LBBB), normal QRS axis, and normal P-R interval, atrial, His bundle, and ventricular electrograms were recorded. The extrastimulus method was utilized to determine the relative refractoriness of the various components of the atrioventricular conducting system. The functional refractory period (FRP) of the A-V node was normal in all but one patient...
متن کاملA wide complex tachycardia: what is the mechanism?
A 33-year-old female was referred for an electrophysiologic study because of recurrent episodes of palpitations. Catheters were placed in the high right atrium (HRA), the His bundle (HIS), and the right ventricular apex (RVA). Baseline cycle length in sinus rhythm and atrial-His (AH) and His-ventricular (HV) intervals were 790, 90, and 45 ms, respectively. Spontaneous onset of a wide complex ta...
متن کاملA Preexcited Left Bundle Branch Block Tachycardia
A 52-year-old woman underwent an electrophysiologic prtKedure because of a 30-year history of recurrent episodes of paroxysmal tachycardia. The baseline sinus cycle length wa.s 600 msec and the QRS complexes had a left bundle branch block configuration, with a QRS duration of 120 msec. The atrial-His (AH) and His-ventricular (HV) intervals were 90 and 20 msec, respectively. Programmed atrial st...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Nihon Naika Gakkai zasshi. The Journal of the Japanese Society of Internal Medicine
دوره 69 9 شماره
صفحات -
تاریخ انتشار 1980