Atrial Flutter with 1:1 A-V Conduction*

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Presentation transcript:

Atrial Flutter with 1:1 A-V Conduction* PAUL L. RODENSKY, M.D., FRED WASSERMAN, M.D. F.C.C.P. Diseases of the Chest Volume 38, Issue 5, Pages 563-566 (November 1960) DOI: 10.1378/chest.38.5.563 Copyright © 1960 The American College of Chest Physicians Terms and Conditions

FIGURE 1 —Case 1: Control electrocardiogram before onset of 1:1 A-V conduction. Atrial rate, 280; ventricular rate, 140. There is atrial flutter with 2:1 A-V conduction (occasionally 3:1 conduction). Incomplete right bundle branch block and a rare premature ventricular contraction are also present. Diseases of the Chest 1960 38, 563-566DOI: (10.1378/chest.38.5.563) Copyright © 1960 The American College of Chest Physicians Terms and Conditions

FIGURE 2 —Case 1: A. Six standard lead electrocardiogram showing atrial flutter with 1:1 A-V conduction. In lead I there is one brief period of 2:1 conduction. Atrial and ventricular rates are 300 per minute. B. Long leads I showing continuous atrial flutter with 1:1 A-V conduction. The rate is 300 per minute. C. Standard leads I and II after intravenous acetyl strophanthidin showing atrial flutter with 2:1 block: Atrial rate 300, ventricular rate 150 per minute. Diseases of the Chest 1960 38, 563-566DOI: (10.1378/chest.38.5.563) Copyright © 1960 The American College of Chest Physicians Terms and Conditions

FIGURE 3 —Case 2: Control electrocardiogram demonstrating atrial flutter with varying degrees of block. Atrial rate 300. There is evidence of incomplete right bundle branch block with probable right ventricular hypertrophy. Diseases of the Chest 1960 38, 563-566DOI: (10.1378/chest.38.5.563) Copyright © 1960 The American College of Chest Physicians Terms and Conditions

FIGURE 4 —Case 2: A-D: Lead II taken during paroxysm of severe palpitation showing alternation from atrial flutter with 2:1 A-V conduction to 1:1 A-V conduction and back to 2:1. Atrial rate 310. C and D are a continuous strip. Diseases of the Chest 1960 38, 563-566DOI: (10.1378/chest.38.5.563) Copyright © 1960 The American College of Chest Physicians Terms and Conditions