Buscar
Mostrando ítems 1-10 de 2736
Heart rate dynamics during a treadmill cardiopulmonary exercise test in optimized beta-blocked heart failure patients
(Faculdade de Medicina / USP, 2008)
BACKGROUND: Calculating the maximum heart rate for age is one method to characterize the maximum effort of an individual. Although this method is commonly used, little is known about heart rate dynamics in optimized ...
Heart-rate variability in low-risk prematurely born infants reaching normal term: A comparison with full-term newborns
(1993)
To investigate the influence of prematurity and postnatal age on the maturation of the autonomic nervous system function, we analysed heart-rate and heart-rate variability in twelve prematurely born infants (<37 weeks ...
Heart Rate Control in Heart Failure
(Arquivos Brasileiros Cardiologia, 2020-12-01)
Modificacoes na ação mecânica do coração isolado de cobaia por doses de propafenon capazes de alterar o eletrocardiograma
(1979-12-01)
Inotropic effects of Propafenon were studied in isovolumic isolated guinea pig hearts submitted to infusion of the drug during 10 minutes. The dosages utilized caused: bradycardia, depression of AV nodal conduction and QRS ...
The relationship between heart rate reserve and oxygen uptake reserve in heart failure patients on optimized and non-optimized beta-blocker therapy
(Faculdade de Medicina / USP, 2008)
BACKGROUND: The relationship between the percentage of oxygen consumption reserve and percentage of heart rate reserve in heart failure patients either on non-optimized or off beta-blocker therapy is known to be unreliable. ...
Heart rate variability as important approach for assessment autonomic modulation
(2016-04-01)
Alterations in the heart rate recovery and heart rate variability have been associated with greater risk of mortality and early prognosis of cardiac diseases. Thus, strategies for assessing autonomic nervous system and its ...
Early and late analysis of postpartum stress in newborn foals
(2017-01-01)
The aim of this study was to evaluate newborn foals stress in the first 48 hours of life. Heart rate (HR), heart rate variability (HRV) and serum cortisol concentrations, blood glucose, and lactate were determined in foals ...
The effect of eccentric strength training on heart rate and on its variability during isometric exercise in healthy older men
(2009-01-01)
The purpose of this study was to investigate if chronic eccentric strength training (ST) affects heart rate (HR) and heart rate variability (HRV) during sub-maximal isometric voluntary contractions (SIVC). The training ...