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There are two major classes of cardiac fibrillation: atrial fibrillation and ventricular fibrillation. Atrial fibrillation is an irregular and uncoordinated contraction of the cardiac muscle of atria. It can be a chronic condition, usually treated with anticoagulation and sometimes with conversion to normal sinus rhythm.
Ventricular fibrillation is a tachyarrhythmia characterized by turbulent electrical activity in the ventricular myocardium leading to a heart rate too disorganized and rapid to produce any meaningful cardiac output, thus resulting in insufficient perfusion of the brain and essential organs. [58]
Anticoagulants: To prevent embolization.. Beta blockers: To block the effects of certain hormones on the heart to slow the heart rate.. Calcium Channel Blockers: Help slow the heart rate by blocking the number of electrical impulses that pass through the AV node into the lower heart chambers (ventricles).
Ventricular fibrillation (V-fib or VF) is an abnormal heart rhythm in which the ventricles of the heart quiver. [2] It is due to disorganized electrical activity. [2] Ventricular fibrillation results in cardiac arrest with loss of consciousness and no pulse. [1] This is followed by sudden cardiac death in the absence of treatment. [2]
The arrhythmias seen in CPVT typically occur during exercise or at times of emotional stress, and classically take the form of bidirectional ventricular tachycardia or ventricular fibrillation. Those affected may be asymptomatic, but they may also experience blackouts or even sudden cardiac death .
The signs and symptoms of Loeffler endocarditis tend to reflect the many underlying disorders causing eosinophil dysfunction as well as the widely differing progression rates of cardiac damage. Before cardiac symptoms are detected, individuals may suffer symptoms of a common cold, asthma , rhinitis , urticarial , or other allergic disorder.
Conservative treatment of arterial thromboembolism in cats is also based on this endogenous dissolution of the clot (see below). In cats, the blood clots originate mainly in the left atrial auricle. [8] They or parts of them are carried along with the blood flow, enter the aorta via the left ventricle, get stuck at vascular outlets and block them.
Cognitive dysfunction syndrome in dogs is an established diagnosis, but there has been limited research for cats and treatment options are limited. [13] Drugs used for treatment of the disease have been approved for use in dogs. However, they are used off-label in treatment of cats. [1] Early diagnosis improves results of long-term treatment. [6]