Question

what is the difference between an echo and an ecg?
the echo uses sound waves and the ecg measures electrical activity
the echo measures electrical activity and the ecg uses sound waves
the echo is done through the esophagus and the ecg is done from outside the body
the echo images the gallbladder and the ecg images the heart

Explanation:

ECHO (echocardiogram) uses ultrasound (sound waves) to create images of the heart. ECG (electrocardiogram) measures the electrical activity of the heart. Let's analyze each option:

• Option 1: Correct. ECHO uses sound waves (ultrasound) and ECG measures electrical activity.
• Option 2: Incorrect. The functions are reversed.
• Option 3: Incorrect. ECHO can be done through the chest (transthoracic) or esophagus (transesophageal), but the key difference is not about the location of the procedure.
• Option 4: Incorrect. ECHO images the heart, not the gallbladder.

Answer:

the ECHO uses sound waves and the ECG measures electrical activity