…its slow onset, prolonged duration of effect, and significant individual variations in its effect. Drug Enalaprilat Brand names Vasotec IV ® Indications Hypertension and hypertensive…

…sinus rates are too slow to meet physiologic needs, such as during exercise (chronotropic incompetence). Although agents such as theophylline and terbutaline can increase the…

…and Pathophysiology Atrial flutter is defined by a macroreentrant atrial circuit, which manifests on the electrocardiogram (ECG) as organized, continuous atrial electrical activity. This activity…

…d and l isomers, which share similar efficacy in prolonging repolarization. However, the l isomer is responsible for virtually all of the beta blocking activity…

…shockable rhythm : Cardiac rhythm that cannot be defibrillated or cardioverted. These rhythms include pulse less electrical activity (PEA), asystole, and bradycardia. No Flow : Circulatory standstill…

…Diagnostics Electrocardiography and Electrophysiology Electrocardiographic evaluation of patients receiving digoxin reveals specific electrophysiologic profiles. Digoxin's autonomic actions largely slow the sinus node discharge rate…

…small to be detected by skin electrodes; the ECG presents the electrical activity of the atrial and ventricular myocardium. Automaticity of pacemaker cells The automaticity…

…tachyarrhythmia. Except for sinus tachycardia during physical activity, all tachycardias should be considered pathological and the task is to clarify the cause of the tachycardia…

…coordinated and efficient atrial and ventricular activity. The conduction system includes the sinoatrial (SA) node, atrioventricular (AV) node, Bundle of His, bundle branches (left and…

…Importantly, for the ventricles to exhibit any electrical—and consequently mechanical—activity, an escape rhythm must originate from an ectopic focus located distal to the…