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Cardioversion is a medical procedure by which an abnormally fast heart rate (tachycardia) or other cardiac arrhythmia is converted to a normal rhythm using electricity or drugs. Synchronized electrical cardioversion uses a therapeutic dose of electric current to the heart at a specific moment in the cardiac cycle , restoring the activity of the ...
Cardioversion is either achieved pharmacologically or via the application of a shock synchronized to the underlying heartbeat. It is used for the treatment of supraventricular tachycardias. In elective cardioversion, the recipient is usually sedated or lightly anesthetized for the procedure. Defibrillation differs in that the shock is not ...
Acute management is as for SVT in general. The aim is to interrupt the circuit. In the shocked patient, DC cardioversion may be necessary. In the absence of shock, inhibition at the AV node is attempted. This is achieved first by a trial of specific physical maneuvers such as holding a breath in or bearing down.
Treatment may be with specific physical maneuvers, medications, or, rarely, synchronized cardioversion. Frequent attacks may require radiofrequency ablation, in which the abnormally conducting tissue in the heart is destroyed. AVNRT occurs when a reentrant circuit forms within or just next to the atrioventricular node.
Dogs that die of Benadryl overdose go into seizures and then experience respiratory failure, and their heart slows down (2). It is not the same death that happens when a dog is put to sleep and ...
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Shock is a life-threatening situation where the body doesn't have enough blood flow, which means cells and tissue don't receive oxygen which can lead to multiple organ failure. This video covers the pathophysiology surrounding the major forms of shock, including hypovolemic, cardiogenic, and distributive shock, as well as several sub-categories ...
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