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Amiodarone is an antiarrhythmic medication used to treat and prevent a number of types of cardiac dysrhythmias. [4] This includes ventricular tachycardia, ventricular fibrillation, and wide complex tachycardia, atrial fibrillation, and paroxysmal supraventricular tachycardia. [4] Evidence in cardiac arrest, however, is poor. [5]
The cardiac myocyte has two general types of action potentials: conduction system and working myocardium. The action potential is divided into 5 phases and shown in the diagram. The sharp rise in voltage ("0") corresponds to the influx of sodium ions, whereas the two decays ("1" and "3", respectively) correspond to the sodium-channel ...
When cardiac arrest is suspected by a layperson (due to signs of unconsciousness, abnormal breathing, and/or no pulse) it should be assumed that the victim is in cardiac arrest. Bystanders should call emergency medical services (such as 911, 999 or 112) and initiate CPR .
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 ...
About 90% of the 350,000 cardiac arrests that happen outside a hospital each year are fatal. However, a simple medical device, an automated external defibrillator (AED), can save lives. According ...
Amiodarone is also safe to use in individuals with cardiomyopathy and atrial fibrillation, to maintain normal sinus rhythm. Amiodarone prolongation of the action potential is uniform over a wide range of heart rates, so this drug does not have reverse use-dependent action. Amiodarone was the first agent described in this class. [4]
Advanced cardiac life support, advanced cardiovascular life support (ACLS) refers to a set of clinical guidelines established by the American Heart Association (AHA) for the urgent and emergent treatment of life-threatening cardiovascular conditions that will cause or have caused cardiac arrest, using advanced medical procedures, medications, and techniques.
In adults, cardiac arrest is usually caused by heart problems such as acute coronary syndrome. Hypoxic/asphyxial cardiac arrest is a result of progressive respiratory failure and/or shock. For this reason, it is important to treat respiratory failure and shock early so that they don't progress to cardiac arrest.
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