Effect of exercise on cycle length in atrial flutter.
AUTOR(ES)
van den Berg, M. P.
RESUMO
OBJECTIVE--To examine the effect of exercise on cycle length in atrial flutter. PATIENTS--15 patients with chronic atrial flutter. Seven patients were taking digoxin and six verapamil; two were not taking medication. METHODS--All patients underwent bicycle ergometry. Flutter cycle length was measured at rest and at peak exercise. RESULTS--Mean flutter cycle length increased from 245 ms to 256 ms (P = 0.002). Six patients developed 1:1 atrioventricular conduction. Significant increases in flutter cycle length were observed irrespective of development of 1:1 atrioventricular conduction and use of digoxin and verapamil. CONCLUSION--Exercise prolongs flutter cycle length. This effect would promote development of 1:1 atrioventricular conduction during exercise, causing inordinately high ventricular rates.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=483809Documentos Relacionados
- Proarrhythmic effect of adenosine in a patient with atrial flutter.
- Left atrial impulse formation in atrial flutter.
- Left atrial appendage function in patients with atrial flutter.
- Atrial flutter. A rare manifestation of digitalis intoxication.
- Extreme tachycardia complicating the use of disopyramide in atrial flutter.
