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Cardiac Electrophysiology and ECG Interpretation Quiz

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Which part of the heart is responsible for initiating the electrical impulses?

SA Node

Explanation

SA Node initiates electrical impulses in the heart.

What does the P wave represent in an ECG?

Atrial depolarization

Explanation

P wave represents atrial depolarization in an ECG.

What is the normal heart rate range for an adult at rest?

60-80 beats per minute

Explanation

Normal resting heart rate for adults is 60-80 beats per minute.

What does the T wave represent in an ECG?

Ventricular repolarization

Explanation

T wave represents ventricular repolarization in an ECG.

In a normal sinus rhythm, what is the expected rate of the sinoatrial (SA) node depolarization?

60-80 beats per minute

Explanation

In normal sinus rhythm, SA node depolarization rate is 60-80 beats per minute.

Which interval on an ECG represents the time it takes for the electrical impulse to travel from the atria to the ventricles?

PR interval

Explanation

PR interval represents atria to ventricles electrical impulse travel time.

In which lead would you typically find the R wave amplitude at its highest in a normal ECG?

Lead II

Explanation

R wave amplitude is highest in Lead II in a normal ECG.

Which electrolyte imbalance is commonly associated with a prolonged QT interval on an ECG?

Hypokalemia

Explanation

Prolonged QT interval is associated with hypokalemia.

Which ECG lead is commonly used to assess the lateral wall of the heart?

Lead V6

Explanation

Lead V6 is commonly used to assess the lateral wall of the heart.

#10

Which part of the ECG corresponds to the time when both atria and ventricles are in a state of electrical rest?

ST segment

Explanation

ST segment corresponds to the time of electrical rest in both atria and ventricles.

#11

What is the most common cause of an elevated ST segment in an ECG?

Myocardial infarction

Explanation

Elevated ST segment is commonly caused by myocardial infarction.

#12

Which condition is associated with a widened QRS complex on an ECG?

Ventricular tachycardia

Explanation

Widened QRS complex is associated with ventricular tachycardia.

#13

What is the most common cause of a peaked T wave on an ECG?

Hyperkalemia

Explanation

Peaked T wave is most commonly caused by hyperkalemia.

#14

What does the term 'ST-segment elevation' often indicate in an ECG?

Myocardial infarction

Explanation

ST-segment elevation often indicates myocardial infarction in an ECG.

#15

Which phase of the cardiac action potential is primarily responsible for the plateau phase?

Phase 2

Explanation

Phase 2 is primarily responsible for the plateau phase in the cardiac action potential.

Cardiac Electrophysiology and ECG Interpretation Quiz

Which part of the heart is responsible for initiating the electrical impulses?

What does the P wave represent in an ECG?

What is the normal heart rate range for an adult at rest?

What does the T wave represent in an ECG?

In a normal sinus rhythm, what is the expected rate of the sinoatrial (SA) node depolarization?

Which interval on an ECG represents the time it takes for the electrical impulse to travel from the atria to the ventricles?

In which lead would you typically find the R wave amplitude at its highest in a normal ECG?

Which electrolyte imbalance is commonly associated with a prolonged QT interval on an ECG?

Which ECG lead is commonly used to assess the lateral wall of the heart?

Which part of the ECG corresponds to the time when both atria and ventricles are in a state of electrical rest?

What is the most common cause of an elevated ST segment in an ECG?

Which condition is associated with a widened QRS complex on an ECG?

What is the most common cause of a peaked T wave on an ECG?

What does the term 'ST-segment elevation' often indicate in an ECG?

Which phase of the cardiac action potential is primarily responsible for the plateau phase?

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