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Amiodarone is an antiarrhythmic medication used to treat and prevent a ... Defibrillation is the treatment of choice for ventricular fibrillation and pulseless ...
Drugs like amiodarone, diltiazem, verapamil and metoprolol are frequently given before electrical cardioversion to decrease the heart rate, stabilize the patient and increase the chance that cardioversion is successful. There are various classes of agents that are most effective for pharmacological cardioversion.
Defibrillation threshold indicates the minimum amount of energy needed to return normal rhythm to a heart that is beating in a cardiac dysrhythmia. Typical examples are the minimum amount of energy, expressed in joules , delivered by external defibrillator paddles or pads, required to break atrial fibrillation and restore normal sinus rhythm .
Compounds that prolong the action potential: matching the modern classification, with the key drug example being amiodarone, and a surgical example being thyroidectomy. This was not a defining characteristic in an earlier review by Charlier et al. (1968), [17] but was supported by experimental data presented by Vaughan Williams (1970).
Defibrillation is often an important step in cardiopulmonary resuscitation (CPR). [6] [7] CPR is an algorithm-based intervention aimed to restore cardiac and pulmonary function. [6] Defibrillation is indicated only in certain types of cardiac dysrhythmias, specifically ventricular fibrillation (VF) and pulseless ventricular tachycardia.
However, neither lidocaine nor amiodarone, in those who continue in ventricular tachycardia or ventricular fibrillation despite defibrillation, improves survival to hospital discharge, despite both equally improving survival to hospital admission. [112] Following an additional round of CPR and defibrillation, amiodarone can also be administered.
Treatment is with cardiopulmonary resuscitation (CPR) and defibrillation. [3] Biphasic defibrillation may be better than monophasic. [3] The medication epinephrine or amiodarone may be given if initial treatments are not effective. [1]
Conversion of atrial fibrillation to flutter (usually VW type IC drugs or amiodarone). May be a desired effect. Increase of defibrillation threshold (a potential problem with VW type IC drugs) Provocation of recurrence (probably VW types IA, IC and III drugs). It is rare.