Health Vocabulary: EKG, ECG, EEG…EEK!

EKG vs. ECG: Two Terms for the Same Heart Test

Electrocardiography was invented in 1903 by Dutch Nobel Laureate Willem Einthoven, who, it should be noted, spelled electrocardiogram with a C. However, when he translated his work into German, it became elektrokardiogramm, which is the origin of the abbreviation EKG. EKG is commonly used in the United States, but most of the English-speaking world uses ECG.  Here at MDsave, we list them together under the term “Electrocardiogram”, but you can search for either by name.

Both EKG and ECG refer to the same diagnostic test: the electrocardiogram. This non-invasive procedure measures the electrical activity of the heart to detect various cardiac conditions.

• EKG: Derived from the German term "Elektrokardiogramm," this abbreviation is commonly used in the United States to avoid confusion with EEG

• ECG: Stands for "electrocardiogram," the English version of the term.

Regardless of the abbreviation, the test involves placing electrodes on the chest, arms, and legs to record the heart's electrical signals. It's instrumental in diagnosing arrhythmias, heart attacks, and other heart-related issues.

EEG: Monitoring Brain Activity

An EEG, or electroencephalogram, is a test that measures the electrical activity of the brain. By placing electrodes on the scalp, it records brain wave patterns, aiding in the diagnosis of conditions like epilepsy, sleep disorders, and brain injuries. If you're looking for an EEG that costs less than the standard rate, check out our procedures.

Key Differences at a Glance

EKG/ECG (Heart)

• Purpose: Measures heart's electrical activity

• Electrode Placement: Chest, arms, and legs

• Procedure Duration: Typically 5–10 minutes

• Diagnoses: Arrhythmias, heart attacks, heart disease

• Sensation: Painless, no sensation from electrodes

EEG (Brain)

• Purpose: Measures brain's electrical activity

• Electrode Placement: Scalp

• Procedure Duration: Varies; can range from 20 minutes to several hours

• Diagnoses: Epilepsy, sleep disorders, brain injuries

Sensation: Painless, no sensation from electrodes

Advancements in 2025

Recent developments have enhanced the capabilities of these diagnostic tools:

• EKG/ECG: Introduction of algorithmically generated 12-lead ECGs from reduced-lead setups, improving accessibility and efficiency.

• EEG: Advancements in portable and wearable EEG devices have made brain monitoring more accessible, especially for long-term and remote assessments.

Conclusion

Understanding the distinctions between EKG, ECG, and EEG is crucial for patients navigating their healthcare journeys. While EKG and ECG are two terms for the same heart test, EEG focuses on brain activity. Staying informed about these procedures empowers you to make better health decisions. Learn more about Electrocardiograms here on MDsave.

Note: This article is for informational purposes only and does not constitute medical advice. Always consult with a healthcare professional for medical concerns.