SUMMARY Ten patients with the electrocardiographic diagnosis of atrial flutter were investigated by exploration with electrodes within the esophagus and the right atrium. The records obtained were studied in regard to the timing of the intrinsic deflection and the contour of the atrial waves, as recorded at various sites. In four patients, atrial activation progressed in sequence cephalad in th...

This is the report of a case of fetal tachyarrhythmia with 1:1 atrioventricular conduction detected by pre-natal echocardiography in a fetus at 25-weeks gestation. Adenosine infusion via cordocentesis was performed as a diagnostic test to differentiate between atrioventricular nodal reentrant supraventricular tachyarrhythmia and atrial flutter. After infusion, transient 2:1 atrioventricular dis...

We report a case of typical counterclockwise atrial flutter (AFL) with conduction block from right to left atrium along the coronary sinus (CS) musculature, confirmed by discontinuous CS activation sequence during pacing near the ostium and differential right atrial pacing. AFL was associated with an atypical flutter wave morphology, due to the detour of the activation wavefront from right to l...

To date, there have been fewer than 50 cases of atrial flutter with 1:1 A-V conduction documented in the English literature.1 The purpose of this paper is to emphasize the diagnostic facets of this relatively uncommon rapid ectopic rhythm and to review the pharmacology of the various therapeutic agents used in its treatment. Two additional cases of 1:1 atrial flutter are reported, one occurring...

The predominant cause of inappropriate therapy by implantable antitachycardia devices with pacing and nonpacing cardioverter defibrillators, is mistaking a fast ventricular response during atrial fibrillation or flutter with true ventricular tachycardia (VT). The distinction between these arrhythmias is an important consideration in addressing the problem of reducing false-positives in detectio...

We evaluated the frequency of cerebral infarction in 131 patients with Duchenne's muscular dystrophy, myotonic dystrophy, Becker's muscular dystrophy, or Friedreich's ataxia. Electrocardiographic abnormalities were found in 83% of patients with Duchenne's muscular dystrophy, 56% with myotonic dystrophy, 50% with Becker's muscular dystrophy, and 25% with Friedreich's ataxia. Atrial flutter occur...

Radiofrequency catheter ablation was performed in 2 patients with atrial tachycardia (AT). In both cases the AT originated from the inferoseptal portion of the right atrium, and the cycle length was 210 ms. The surface ECG demonstrated common counterclockwise atrial flutter, probably caused by functional block in the clockwise direction at the cavo-tricuspid isthmus and posterior right atrium w...

OBJECTIVE To investigate incidence and timing, risk factors, prognostic significance, and electrophysiological mechanisms of atrial arrhythmia (AA) after lung transplantation. BACKGROUND Although new-onset AA is common after thoracic surgery and is associated with poorer outcomes, prognostic and mechanistic data is sparse in lung transplant populations. METHOD A total of 293 consecutive iso...

AIM To determine whether elective direct current (dc) cardioversion of atrial fibrillation/flutter causes myocardial damage. METHODS AND RESULTS Cardiac troponin T and creatine kinase were estimated 20-28 hours after dc cardioversion in 51 patients who received dc shocks for elective cardioversion of chronic atrial fibrillation/flutter. Although creatine kinase was raised in 44 patients, card...

Aklthouh digitalis is known to produce a variety otrial, junctional, (1 ventricular arihythimmias, atrial flutter due to digitalis intoxication has been rarely reported. The present paper reviews the literature and reports what appears to be the sixteenth case. The available inforimmation on the accepted cases(of atrial flutter due to digitalis toxicity has been analyzed for clues as to when di...