Indications for Electrocardiogram (EKG)

Clinical Scenarios Where EKG is Indicated

The American Heart Association recommends EKG as a first-line test for patients with known cardiovascular disease, including those with coronary artery disease, heart failure, arrhythmias, or conduction abnormalities 1
Serial EKGs are recommended to monitor disease progression or response to therapy in patients with established cardiovascular conditions, according to the American College of Cardiology 3
Patients with implanted cardiac devices (pacemakers, defibrillators) should have periodic EKGs to assess device function, as suggested by the American Heart Association 3
EKG is indicated for patients presenting with chest pain, dizziness, syncope, or near-syncope, as recommended by the American College of Cardiology 2
Patients with palpitations, unexplained dyspnea, extreme fatigue, or changes in angina pattern should undergo EKG evaluation, according to the American Heart Association 1

The American Academy of Family Physicians recommends EKG for patients with known cardiovascular disease, peripheral vascular disease, or cerebrovascular disease who are undergoing intermediate or high-risk surgery 4
Patients with one or more clinical risk factors (coronary artery disease, heart failure, cerebrovascular disease, diabetes mellitus, renal insufficiency) should have an EKG before vascular surgery, as suggested by the American College of Cardiology 4
Patients older than 65 years should have a preoperative EKG regardless of the type of surgery, according to the American Academy of Family Physicians 4

EKG is indicated before and during therapy with medications known to affect cardiac conduction or repolarization, such as psychotropic agents, anti-infective agents, antihypertensive medications, antiarrhythmic drugs, and digitalis, as recommended by the American Heart Association 3, 5

The absence of acute changes on a single EKG does not rule out evolving cardiac conditions, and serial EKGs may be necessary, according to the American College of Cardiology 3
Continuous cardiac monitoring (telemetry) provides different information than a standard 12-lead EKG and should not be considered equivalent, as suggested by the American Heart Association 3

Asymptomatic patients undergoing low-risk surgery with no cardiovascular risk factors do not require an EKG, according to the American Academy of Family Physicians 4
Patients receiving medications not known to produce EKG changes do not require an EKG, as recommended by the American Heart Association 1