Positively deflected lead avr is indicative of atrial tachyarrhythmias while when evaluating a chest pain patient's 12-lead ECG.
ECG stands for Echocardiography. Its is done for the patient having issues with heart related problems such as High BP, Cardiac arrest, etc.
Atrial tachyarrhythmias is condition where heartbeat rate increases to more than 100 beats per minute. It is also known as the type of supraventricular tachycardia (SVT).
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