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ELECTROCARDIOGRAPH Lab-3

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Questions and Answers

What direction does the electricity flow in Lead II?

From the left arm to the left leg
From the right arm to the right leg
From the right arm to the left leg (correct)
From the left arm to the right arm

What is the purpose of using gel with ions during an ECG?

To increase conductivity (correct)
To detect electrolyte imbalance
To measure heart rate
To decrease conductivity

What does the P wave in an ECG represent?

Depolarization of the atrium (correct)
Repolarization of the atrium
Repolarization of the ventricle
Depolarization of the ventricle

What is the significance of measuring electrolytes in ECG?

To detect electrolyte imbalance (A) Signup and view all the answers

What is bradycardia in the context of ECG?

An unusually slow heart rate (A) Signup and view all the answers

How many electrodes are used in a standard ECG measurement?

12 (C) Signup and view all the answers

What is the primary function of an electrocardiogram (ECG)?

To detect heart problems and monitor the heart's health (D) Signup and view all the answers

What is the origin of electricity in the heart?

Sinoatrial node (D) Signup and view all the answers

What is the mechanical function of the left ventricle?

Pumps blood out of the heart (D) Signup and view all the answers

What is the purpose of an ECG if you have chest pain?

To detect blocked or narrowed arteries in the heart (B) Signup and view all the answers

Who developed the ECG?

Einthoven (C) Signup and view all the answers

What is the direction of electricity in Lead I of Einthoven's triangle?

From the right arm to the left arm (C) Signup and view all the answers