Dobutamine--Dobutamine is a sympathomimetic drug with a short half-life (2 min) that mainly acts on [beta] cardiac receptors resulting in positive inotropic and chronotropic
Indicating the presence of a latent cardiac dysfunction known as "cirrhotic cardiomyopathy", which is defined at present as baseline increased cardiac output, but blunted ventricular response to stimuli, systolic and/or diastolic dysfunction, absence of overt left ventricular failure at rest, electrophysiological abnormalities including prolonged QT interval on electrocardiography and chronotropic
Besides exercise capacity and chronotropic
response, heart rate recovery (HRR) index and systolic blood pressure recovery (SBPR) rate can be calculated by the exercise stress test.
Synthesis and their inotropic and chronotropic
activity in isolated guinea pig atria.
Sinus node dysfunction is a term used for numerous rhythm abnormalities such as: persistent sinus bradycardia, persistent sinus arrest with escape rhythms, and chronotropic
incompetence [2, 3].
Comparison of endothelial vasodilator function, inflammatory markers, and N-terminal pro-brain natriuretic peptide in patients with or without chronotropic
incompetence to exercise test.
The beneficial role of diltiazem in the case of IHD is probably due its vasodilating effect over coronary vasculature and cardiac conductive tissues (negative chronotropic
effect and prolongation of atrioventricular [AV] conduction).
Conversely, it was observed a negative chronotropic
effectin all groups, evidenced by a decrease in HR 15 minutes after the application of the sedation protocol (Table 1).
and antidysrhythmic effects of hydroalcoholic extract of Lemon Balm (Melissa Officinalis L.
The crude extract and butanol fraction were found to be positive inotropic whereas, butanol fraction showed negative chronotropic
effect as well.
Characterization of antibodies against the beta 1-adrenoceptor with positive chronotropic
2] peak has had a growing importance in numerous clinical settings because it has been used to calculate and determine associated cardiopulmonary variables presented in medical reports that provides information about patient health status, such as maximum cardiac output (CO max), functional aerobic impairment (FAI), maximum metabolic equivalent (MET max) and chronotropic
impairment (CI) (6,7).