…However, most cardiac conditions may be associated with atrial flutter. As compared with several other supraventricular tachyarrhythmias, atrial flutter does not occur among otherwise healthy…

…On the other hand, sinus bradycardia developing during physical exercise is considered abnormal, because heart rate must increase during exercise. Mechanisms of cardiac arrhythmias The…

…93%) for myocardial infarction. Moreover, fragmented QRS is associated with an increased risk of sudden cardiac death and ventricular arrhythmias. Figure 2. Fragmented QRS complex…

…sudden cardiac arrest. The constraint does not lie in therapy: implantable cardioverter defibrillators (ICDs) are highly effective, terminating well over 99% of the ventricular arrhythmias…

…separate from those in Brugada syndrome and the risk of ventricular arrhythmias and sudden cardiac death is considerably lower than the risk among patients with…

Arrhythmias and arrhythmology Pharmacology & dosing Definition and Pathophysiology Adenosine is an endogenous nucleoside present throughout the body that interacts with G protein coupled A1 receptors…

…slow rate. Acute treatment is generally unnecessary unless the cardiac output is inadequate, hypotension is present, or secondary arrhythmias result from the slow rate. In…

…when other therapeutic options cannot be pursued. Patients receiving digoxin may present with symptoms of digitalis toxicity, which manifests across multiple organ systems. Non cardiac…

…and subsequent fall in cardiac specific troponin attributable to myocardial ischaemia. UA presents with compatible ischaemic symptoms but without cardiac specific troponin elevation above the…

…Atrial arrhythmias Pericardial disease, including constriction Right ventricular dysfunction caused by pulmonary embolism Infiltrative cardiomyopathies, particularly cardiac amyloidosis Sepsis and other hyperdynamic states In cardiac…