Respiratory sinus arrhythmia in Chagas disease
نویسندگان
چکیده
We applied the respiratory sinus arrhythmia (RSA) quantification algorithm to 24-hour ECG recordings of Chagas disease (ChD) patients with (G1, n=148) and without left ventricular dysfunction (LVD) (G2, n=33), and in control subjects (G0, n=28). Both ChD groups displayed a reduced RSA index; G1=299 (144-812); G2=335 (162-667), p=0.011, which was correlated with vagal indexes of heart rate variability analysis. RSA index is a marker of vagal modulation in ChD patients.
منابع مشابه
Is autonomic function associated with left ventricular systolic function in Chagas heart disease patients undergoing treatment for heart failure?
INTRODUCTION The association between cardiac autonomic and left ventricular (LV) dysfunction in Chagas disease (ChD) is controversial. METHODS A standardized protocol that includes the Valsalva maneuver, a respiratory sinus arrhythmia (RSA) test, and an echocardiographic examination was used. Spearman correlation coefficients (rho) were used to investigate associations. RESULTS The study po...
متن کاملAutonomic dysfunction and anti-M2 and anti-β1 receptor antibodies in Chagas disease patients.
BACKGROUND Sudden death is the leading cause of death in Chagas' disease, affecting patients even in the early stages of the disease. The impairment of the autonomic nervous system in this disease has been recognized, as well as its potential as a trigger for malignant arrhythmias when associated with structural or metabolic changes. OBJECTIVE We sought to identify, in Chagas patients with pr...
متن کاملActive orthostatic stress and respiratory sinus arrhythmia in patients with Chagas' disease with preserved left ventricular global systolic function.
OBJECTIVE To assess the use of the active orthostatic stress test for detecting vagal dysfunction in patients with Chagas' disease with preserved overall systolic function, and to compare it with the respiratory sinus arrhythmia test. METHODS Sixty-one chagasic patients (Ch) and 38 nonchagasic (NCh) patients with no significant evidence of heart disease or systemic diseases underwent Doppler ...
متن کاملClinical characterization of chronic chagasic cardiomyopathy in dogs1
Pascon J.P.E., Pereira Neto G.B., Sousa M.G., Paulino Júnior D. & Camacho A.A. 2010. Clinical characterization of chronic chagasic cardiomyopathy in dogs. Pesquisa Veterinária Brasileira 30(2):115-120. Departamento de Clínica e Cirurgia Veterinária, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, SP 14884-900, Brazil. E-mail: [email protected] On ...
متن کاملRespiratory sinus arrhythmia during sleep in children with upper airway obstruction.
Upper airway obstruction during adulthood is associated with cardiovascular morbidity; cardiovascular consequences of childhood upper airway obstruction are less well established. This study aimed at investigating the effect of childhood upper airway obstruction on respiratory sinus arrhythmia as a measure of cardiac vagal modulation during night-time sleep. Overnight polysomnography was conduc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Autonomic Neuroscience
دوره 185 شماره
صفحات -
تاریخ انتشار 2014