ELECTROCARDIOGRAM
(ECG OR EKG)

Diagnose electrical activity is normal or slow, fast or irregular
Evaluate symptoms such as chest pain, epigastric pain or back, neck, jaw or arm pain without chest pain, palpitations
Syncope or near syncope
Pulmonary edema
Exertional dyspnea
Weakness
Diaphoresis unexplained by ambient temperature
Feel of anxiety or impending doom