Effect of exercise on cycle length in atrial flutter. Issue 3 (March 1995)

• Record Type: Journal Article
• Authors: van den Berg, M. P.; Crijns, H. J.; Szabó, B. M.; Brouwer, J.; Lie, K. I.
• Is Part Of: Heart. Volume 73:Issue 3(1995)
• Page Start: 263
• Page End: 264
• Publication Date: 1995-03
• Subjects: Heart -- Diseases -- Treatment -- Periodicals; Cardiology -- Periodicals; 616.12
• DOI: 10.1136/hrt.73.3.263
• Languages: English
• ISSNs: 1355-6037

Abstract

Abstract : 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.