[Use of transesophageal stimulation of the left atrium in the diagnosis of ischemia and cicatricial myocardial changes in patients with complete block of the left fascicle of the bundle of His].
Transesophageal stimulation of the left atrium was performed in 52 patients who had signs of complete left bundle branch block as evidenced by ECG, 48 patients having sustained block, 4, intermittent one. In 42 (80.8%) patients, the block was temporarily arrested during and/or after discontinuation of the electric stimulation, in 28 of them, the block was stopped during the stimulation without any drugs, in 1, only after obsidan, and in 13, following obsidan and atropine. When the block was being arrested, 13 patients showed ECG ischemic changes, 7 exhibited myocardial scarring alterations, 8 had nonspecific T wave alterations, 8 displayed signs of left ventricular hypertrophy with impaired repolarization. No ECG changes were found in 7 patients. The use of transesophageal electrical stimulation of the left atrium to temporarily abolish complete left bundle branch block may contribute to elucidation of the etiology of the block and choice of the most adequate therapy.
Shu'lman
V A
VA
Matiushin
G V
GV
Nazarov
B V
BV
Za'ltsberg
S V
SV
Kostiuk
F F
FF
D000293:Adolescent; D000328:Adult; D000368:Aged; D002037:Bundle-Branch Block / Q000150:complications / Q000628:therapy*; D002304:Cardiac Pacing, Artificial; D002312:Cardiomyopathy, Hypertrophic / Q000150:complications / Q000175:diagnosis*; D003327:Coronary Disease / Q000150:complications / Q000175:diagnosis*; D004562:Electrocardiography; D004947:Esophagus; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
Primenenie chrespishchevodnoĭ stimuliatsii levogo predserdiia dlia diagnostiki ishemii i rubtsovykh izmeneniĭ miokarda u bo'lnykh s polnoĭ blokadoĭ levoĭ nozhki puchka Gisa.