Kaplinsky, Elieser; Hood Jr., William B.; Lown, Bernard
December 1973
Angiology;Dec1973, Vol. 24 Issue 11, p713
Academic Journal
The effects of treadmill exercise on cardiac mechanism were studied in 34 dogs, two to eight days following ligation of the anterior descending coronary artery. Physical exercise abolished all ventricular arrhythmias which were present at rest. Some of the animals displayed return of ventricular rhythm disorders towards the end of exercise when studied as early as 48 hours after the coronary occlusion. In experiments carried out on the second and third days, a transient intensification of ventricular arrhythmias during recovery was ob- served. Physical exertion beyond the third day after infarction did not provoke ventricular arrhythmias during or after the exercise. However, isoproterenol and epinephrine infusions resulted in reappearance of ventricular arrhythmias up to four days after coronary ligation. The effects of exercise on cardiac mechanism are probably a result of diverse factors; the faster rate during exercise tends to abolish ventricular arrhythmias whereas other unidentified factors, perhaps related to myocardial oxygen requirement, catecholamines or the appearance of left heart, failure, tend to provoke ventricular arrhythmias especially after the exercise as the sinus rate slows. These results may have implications in the interpretation of exercise tests and in assessing the role of physical activity in patients with ischemic heart disease.


Related Articles

  • When should CAD patients exercise? Cerrato, Paul L. // RN;Aug93, Vol. 56 Issue 8, p15 

    Reports on the low incidence of syncope, sustained arrhythmias, myocardial infarction or sudden death in cardiac patients who exercised in the morning. Report by P.M. Murray and D.M. Herrington; Exercise as trigger for heart attacks.

  • Signal-averaged ECG: Why? Who? When? Porterfield, James G.; Porterfield, Linda M.; Pinkowish, Mary Desmond // Patient Care;1/30/1993, Vol. 27 Issue 2, p73 

    Focuses on the use of signal-averaged electrocardiography in predicting arrhythmia after myocardial infarction. Means to increase the size of late potentials, high-pass filters remove the high-frequency noise; Indication of areas of slow ventricular conduction; Prevalence of late potentials...

  • Clinical digest. Resting heart rate associated with survival in diabetes.  // Nursing Standard;2/2/2011, Vol. 25 Issue 22, p17 

    The article reports on the results of a survey titled the Euro Heart Survey on Diabetes and the Heart, which evaluated 2,608 people with stable coronary artery disease and diabetes. The survey found that there is an association between resting heart rate and cardiovascular events in people with...

  • Exercise Following Myocardial Infarction: Current Recommendations. Leon, A.S. // Sports Medicine;May2000, Vol. 29 Issue 5, p301 

    Cardiac rehabilitation services are comprehensive long term programmes designed to limit the physiological and psychological effects of cardiovascular disease (CVD), control cardiac symptoms and reduce the risk of subsequent CVD events by stabilising or partially reversing the underlying...

  • Clinical and Angiographic Characteristics of Exertion-Related Acute Myocardial Infarction. Giri, Satyendra; Thompson, Paul D.; Kiernan, Francis J.; Clive, Jonathan; Fram, Daniel B.; Mitchel, Joseph F.; Hirst, Jeffrey A.; McKay, Raymond G.; Waters, David D. // JAMA: Journal of the American Medical Association;11/10/99, Vol. 282 Issue 18, p1731 

    Presents a study to compare the clinical and angiographic characteristics of patients who had an exertion-related acute myocardial infarction (MI) versus those who experienced an MI not related to exertion. Context; Design and setting; Patients; Main outcome measures; Results; Conclusion.

  • Recognition of individual heart rate patterns with cepstral vectors. Curcie, David J.; Craelius, William // Biological Cybernetics;1997, Vol. 77 Issue 2, p103 

    Abstract. Heart rate patterns may contain diagnostic as well as forensic information. To test these possibilities, individual heart rate patterns were represented as heart-rate cepstral vectors (HRCVs) computed in 12 dimensions via linear predictive coding (LPC) of brief segments of heart rate....

  • Survival data management in patients with acute myocardial infarction. Vernic, Corina Violeta; Ivan, Viviana; Dascălu, Cristina Gena; Cărăuşu, Elena Mihaela // Annals. Computer Science Series;2011, Vol. 9 Issue 1, p99 

    The aim of this study is to analyse survival data of the patients with acute myocardial infarction. We studied a sample of 424 patients with a mean age of 67.1±12.3 years. The overall mortality rate after 5 years was 233.4%e. The presence of late potentials in patients with associated...

  • QT Dispersion and Early Arrhythmic Risk During Acute Myocardial Infarction. Paventi, Saverio; Bevilacqua, Umberto; Parafati, Maria A.; di Luzio, Enza; Rossi, Francesco; Pelliccioni, Patrizia R. // Angiology;Mar1999, Vol. 50 Issue 3, p209 

    It has been suggested that QT dispersion (maximal minus minimal QT interval calculated on a standard 12-lead electrocardiogram) could reflect regional variations of ventricular repolarization and could provide a substrate for reentry ventricular arrhythmias. The present study evaluates QT...

  • Cardiac Stem Cells and their Roles in Myocardial Infarction. Hou, Jingying; Wang, Lingyun; Jiang, Jieyu; Zhou, Changqing; Guo, Tianzhu; Zheng, Shaoxin; Wang, Tong // Stem Cell Reviews & Reports;Jun2013, Vol. 9 Issue 3, p326 

    Myocardial infarction leads to loss of cardiomyocytes, scar formation, ventricular remodeling and eventually deterioration of heart function. Over the past decade, stem cell therapy has emerged as a novel strategy for patients with ischemic heart disease and its beneficial effects have been...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics