13 rezultatus
The renin-angiotensin and adrenergic nervous systems are cross-regulated compensatory mechanisms that are induced or activated in the failing heart. In ventricular myocardium, the activation of one of these systems leads to activation or induction of the other, resulting in co-amplification of
Acute stroke may cause hypertension and actually available devices for non-invasive blood pressure monitoring make it possible to study short-term variability of pressure in this condition, in order to settle a more rational diagnostic and therapeutic approach. In our experience blood pressure
1. 2-Ethyl-3-(4-gamma-di-n-butylaminopropoxy-benzoyl)-indolizine hydrochloride (L 9394) induced in the ananesthetized dog a marked and long-lasting decrease in heart rate together with a transient reduction in blood pressure. 2. L 9394 decreased Robinson's index, an effect which suggests that the
The longitudinal analysis of the adult population of Framingham, Massachusetts has clarified the pivotal role of hypertension in the epidemiology of stroke. Stroke incidence increases in men and women as arterial blood pressure, either systolic or diastolic, increases. Isolated systolic hypertension
Moxonidine is a centrally acting antihypertensive. Its action is mediated by imidazoline I1 receptors located in the rostral ventro-lateral medulla (RVLM). Animal experiments show that much smaller amounts are required to reduce blood pressure (BP) when it is given intracisternally, or injected
BACKGROUND
The basic pharmacology of the third-generation beta-blocking agent carvedilol differs considerably from second-generation compounds such as metoprolol. Moreover, carvedilol may produce different, ie, more favorable, clinical effects in chronic heart failure. For these reasons, we compared
Despite a proven efficacy in lowering blood pressure, centrally acting antihypertensive drugs are no longer widely used because of the relative high incidence of adverse effects. Most central side-effects occurring with these drugs are mediated by the alpha2-receptor. Moxonidine is an imidazoline
Bretylium tosylate has been shown effective in the treatment of ventricular fibrillation and in the prevention of its recurrence. However, lidocaine is generally preferred because bretylium could have adverse hemodynamic effects related to its antiadrenergic action. To explore further the
Hypertension associated with excessive liberation of circulating and tissue catecholamines is an independent risk factor for further cardiovascular complications and an important predictor of stroke. Moxonidine is a centrally acting anti-hypertensive drug with potent action on I1-imidazoline
The acute hemodynamic effects of intravenous methyldopa were studied in six patients with chronic congestive heart failure (New York Heart Association class IV) at 4-6 hours after a 750-mg bolus (period A) and 6-12 hours after a maintenance infusion of 1-2 mg/minute (period B). For period A, the
BACKGROUND
Dronedarone restores sinus rhythm and reduces hospitalization or death in intermittent atrial fibrillation. It also lowers heart rate and blood pressure and has antiadrenergic and potential ventricular antiarrhythmic effects. We hypothesized that dronedarone would reduce major vascular
Cardiac arrhythmias and electrocardiographic abnormalities are frequently observed after acute cerebrovascular events. The precise mechanism that leads to the development of these arrhythmias is still uncertain, though increasing evidence suggests that it is mainly due to autonomic nervous system
BACKGROUND
Both metoprolol and carvedilol produce hemodynamic and clinical benefits in patients with chronic heart failure; carvedilol exerts greater antiadrenergic effects than metoprolol, but it is unknown whether this pharmacological difference results in hemodynamic and clinical differences