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Atrial Tachycardia

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Question: What is paroxysmal atrial tacycardia vs regular atrial tachycardia.? What is the difference? Also, what about ventricular tachycardia vs paroxysmal?

Answer: An atrial tachycardia is due to an irritable focus in the atrium. The heart rate is 100 to 200 beats per minute. A paroxysmal atrial tachycardia was formally called a paroxysmal supraventricular tachycardia. Here the atrial rate is usually 160 to 200 beats per minute. The main difference is what is shown in the meaning of the word 'paroxysm'. A paroxysm is one that comes suddenly and then disappears. Both are atrial tachycardias . In the first form the tachycardia remains through out until treated. But in the latter the tachycardia comes without a warning in a person with a normal heart rate and it can return to normal even with rest. So few such paroxysms may occur during a period. A ventricular tachycardia has a heart rate of 100 to250 and ventricular ectopic complexes occur. In a paroxysmal ventricular tachycardia the difference is that the ventricular cause for the increased heart rate comes in paroxysms like in the atrial paroxysmal tachycardias. I am a medical doctor.

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