Case 27 Atrial flutter with 3 : 1 A-V blockdoi:10.1159/000429013E. K. Chung
Atrial flutter is a cardiac arrhythmia characterized by atrial rates of 240-400 beats/min, usually with some degree of atrioventricular (AV) node conduction block (eg, 2:1 or 3:1 block). Approximately 60% of patients with atrial flutter have coronary artery disease (CAD) or hypertensive ...
Because of the long refractory period of the AV node, usually only a proportion of the flutter waves are conducted to the ventricles; typically in a ratio of 2:1 (Fig. 21-4), resulting in a heart rate of about 150. Higher ratios of AV block (e.g., 3:1 or 4:1) resulting in ...
Atrial flutter with 1:1 conduction 来自 Semantic Scholar 喜欢 0 阅读量: 27 作者: Tan,J L 摘要: Objective: To investigate the detailed anatomy of the terminal crest (crista terminalis) and its junctional regions with the pectinate muscles and intercaval area to provide the yardstick for ...
An aged case of atrial flutter with complete A-V block was presented. This combination of arrhythmias was emphasized to be rare, and histological study of the conduction system revealed a fresh degenerative change superimposed on the severe degenerative and fibrotic changes at the penetrating portion...
There is a clear unmet need to develop novel mechanistically based therapeutic options with improved efficacy and favourable safety profiles. In recent years, substantial efforts have been invested in developing treatments that target the underlying mechanisms of AF, and several new compounds are under ...
36 Occasionally, other arrhythmias such as frequent irregular premature atrial beats and atrial tachycardia (AT)/flutter with variable ventricular response can falsely give the impression of AF. A more careful examination of the EKG, focusing on atrial activity, can be helpful in such cases. The ...
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Using a standardized induction protocol, we investigated the mechanism of initiation of atrial flutter, before ablation, to determine the site of initiating unidirectional block and to test the hypothesis that the direction of rotation of atrial flutter depends on the pacing site from which it initiat...
195: Women with atrial flutter differ from menThe management and prognosis of heart diseases (HD) or arrhythmias may depend on the patient gender. The purpose of the study was to look for the influence of gender on the indications and the long-term results of ablation of atrial flutter (AFl...