There is increasing recognition that systematic postcardiac arrest care after return of spontaneous circulation ROSC can improve the likelihood of patient. Number 0073. Policy. Aetna considers external intermittent cardiac event monitors i. e., external loop recorders and external intermittent cardiac event monitors. Figure1 Myocardial infarction MI can be recognised by clinical features, including electrocardiographic ECG findings, elevated values of biochemical markers. An error occurred while setting your user cookie. Please set your. browser to accept cookies to continue. NEJM. org uses cookies to improve performance by remembering your. ID when you navigate from page to page. This cookie stores just a. ID no other information is captured. Atrial fibrillation AF or Afib is an abnormal heart rhythm characterized by rapid and irregular beating of the atria. Often it starts as brief periods of abnormal. Original Article. Mortality and Morbidity in Patients Receiving Encainide, Flecainide, or Placebo The Cardiac Arrhythmia Suppression Trial. Debra S. Echt, M. D. Background The most common location of outofhospital sudden cardiac arrest is the home, a situation in which emergency medical services are challenged to provide. Cardiac electrophysiology is the science of elucidating, diagnosing, and treating the electrical activities of the heart. The term is usually used to describe studies. Accepting the NEJM cookie is.