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During cardiac arrest the AHA direct healthcare providers obtain 12-leads ECG immediately after the return of spontaneous circulation to identify those patients with ST- segment myocardial infarction or new or presumably new bundle branch block.

12-leas electrocardiography use which perform to diagnose ST-segment elevation myocardial infarction. It is a medical test that recorded using leads or nodes which attached to the body. Vasopressin should be effective in patients of cardiac arrest after the treatment.

ECGs captured the electrical activity of heart and transfer it to graphed paper. Use to diagnose cardiovascular disease ,acute myocardial infarction in clinics and hospital based practice.

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