Can a non-cardiologist provider read an electrocardiogram (EKG) tracing, especially for patients with known or suspected cardiovascular disease?

Can Non-Cardiologist Providers Read EKG Tracings?

Yes, non-cardiologist providers can and should read EKG tracings, but the interpretation must be performed by a physician qualified to interpret ECGs—computer interpretation alone is not sufficient for clinical decision-making. 1

Qualification Requirements for EKG Interpretation

• A properly interpreted ECG requires interpretation by a physician qualified to interpret ECGs, not just computer-generated readings 1
• Computer-interpreted ECGs show significant discrepancies with cardiologist interpretations in 6.1% of cases for potentially clinically significant findings and 12.5% for non-clinically significant changes 2
• Primary care physicians can achieve good agreement with cardiologists in ECG interpretation when following systematic approaches 3
• The responsibility for correctly interpreting an ECG lies with the physician, who must recognize patient-dependent errors, operator-dependent errors, and artifact 4

When Non-Cardiologist Providers Should Interpret EKGs

Patients with Known Cardiovascular Disease

• All patients with known cardiovascular disease require baseline ECG interpretation for initial evaluation, response to therapy, and follow-up 1
• Serial ECGs are indicated when symptoms change, signs evolve, or relevant laboratory findings emerge 1
• Preoperative ECG interpretation is recommended for all patients with known cardiovascular disease undergoing cardiac or noncardiac surgery 1

Patients with Suspected Cardiovascular Disease

• ECG interpretation is indicated for patients presenting with cardiac symptoms including chest pain, dyspnea, palpitations, and syncope 5, 6
• Patients with suspected acute coronary syndrome require timely ECG interpretation to guide emergent reperfusion therapy 5
• ECG evaluation is valuable when cardiac abnormality is suspected based on symptoms, abnormal physical findings, previous abnormal ECGs, or other laboratory abnormalities 1

High-Risk Patients

• Patients at increased risk for developing cardiac disease warrant periodic ECG interpretation (every 1-5 years) 1
• Risk factors include hypertension, diabetes, hyperlipidemia, smoking, and family history of premature coronary artery disease 7

Clinical Utility in Primary Care Settings

• ECG interpretation in primary care changes management in 30.6% of patients with suspected cardiovascular symptoms 3
• The most common management changes include avoiding unnecessary cardiology referrals (34%), initiating appropriate referrals (20%), and modifying cardiovascular therapy (40%) 3
• In patients with chest pain, a normal ECG (likelihood ratio 0.06) and abnormal ECG (likelihood ratio 13.3) are highly useful for distinguishing patients likely or unlikely to experience cardiac events 3
• ECG interpretation can reduce unnecessary referrals considerably when combined with history and physical examination 3

Systematic Approach to Interpretation

• Following a specific routine and methodical analysis ensures accurate interpretation 4
• Current ECG tracings should always be compared with previous tracings 4
• A stepwise approach helps primary care physicians systematically interpret ECG tracings 6
• When uncertain, ECGs can be transmitted for inter-consultation with a more experienced reader 4

Important Limitations and Caveats

• Computer algorithms exist ubiquitously but can be sources of erroneous information 6
• ECG interpretation should always be performed in the clinical context of the patient 5
• For patients with acute symptoms suggesting life-threatening conditions, in-person evaluation in an emergency setting is preferable to remote ECG evaluation 5
• ECG alone may not be sufficient for definitive diagnosis in complex cases, and additional cardiac testing may be necessary 5
• Even with computer-interpreted normal ECGs, rare patients will have important cardiac outcomes, though immediate physician review would not have changed their emergency department course in most cases 2

Special Considerations for Non-Physician Providers

• Triage nurses can accurately identify ECG patterns indicative of time-dependent conditions correlated with major acute cardiovascular events, with 84.6% sensitivity for detecting abnormalities in patients who develop acute cardiovascular events 8
• However, formal physician interpretation remains the standard of care for clinical decision-making 1