If there is a history of blunt trauma or any symptoms to suggest polymyositis, then troponin, creatine kinase (CK) and an echocardiogram should be obtained.
Right bundle branch block laboratory findings
Second degree AV block laboratory findings
Atrioventricular block laboratory findings
Atrial flutter laboratory findings
Premature atrial contraction laboratory findings
Atrial fibrillation laboratory findings
Ventricular tachycardia laboratory findings
Noonan syndrome ECG findings