Muscle sympathetic nerve activity in patients with Chagas' disease Carlos E. Negrão, Amilton C. Santos, Maria U. Rondon, Fabio G. Franco, Barbara Ianni, Carlos E. Rochitte, Ana M.F.W. Braga, Múcio T. Oliveira, Charles Mady, Antonio C.P. Barretto, Holly R. Middlekauff International Journal of Cardiology Volume 137, Issue 3, Pages 252-259 (November 2009) DOI: 10.1016/j.ijcard.2008.06.093 Copyright © 2008 Elsevier Ireland Ltd Terms and Conditions
Fig. 1 Sympathetic neurograms. Note that muscle sympathetic nerve activity is markedly elevated in heart failure patients, but not in Chagasic without heart failure patient. International Journal of Cardiology 2009 137, 252-259DOI: (10.1016/j.ijcard.2008.06.093) Copyright © 2008 Elsevier Ireland Ltd Terms and Conditions
Fig. 2 Individual levels of muscle sympathetic nerve activity burst frequency (A) and bursts per 100 heart beats (B) in normal controls (NC), Chagas' disease patients and heart failure (HF) patients. * = vs. normal controls and Chagas' disease patients (P<0.05). International Journal of Cardiology 2009 137, 252-259DOI: (10.1016/j.ijcard.2008.06.093) Copyright © 2008 Elsevier Ireland Ltd Terms and Conditions
Fig. 3 Muscle sympathetic nerve activity burst frequency (A) and bursts per 100 heart beats (B) during exercise in normal controls (NC), Chagas' disease patients and heart failure (HF) patients. * = vs. Chagas' disease patients without HF and NC (P<0.05). + = All groups vs. basal (P<0.05). International Journal of Cardiology 2009 137, 252-259DOI: (10.1016/j.ijcard.2008.06.093) Copyright © 2008 Elsevier Ireland Ltd Terms and Conditions