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ECG Interpretation: Atrial and Ventricular Enlargement

14 Questions

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ECG Interpretation: Atrial and Ventricular Enlargement

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Questions and Answers

What does a tall P wave in lead II indicate?

Left atrial enlargement

Right ventricular enlargement

Left ventricular enlargement

Right atrial enlargement (correct)

What is the characteristic P wave pattern in left atrial enlargement?

Broad and bifid (correct)

Notched

Tall and peaked

Inverted

What is a common cause of right ventricular enlargement?

Tricuspid regurgitation

Mitral stenosis

Pulmonary hypertension (correct)

Pulmonary embolism

What does a deep S wave in V1 and V2 indicate?

Left ventricular enlargement Signup and view all the answers

What is the characteristic feature of second-degree heart block, Mobitz type 1?

Progressive lengthening of the PR interval followed by an absence of the QRS Signup and view all the answers

What is the definition of third-degree heart block?

Complete heart block with atrial contraction and ventricular beats Signup and view all the answers

What does ST segment elevation indicate?

Acute ischemia Signup and view all the answers

What is the normal PR interval?

Not more than 1 big square Signup and view all the answers

What is the characteristic of P wave in complete heart block?

P wave ~90/min Signup and view all the answers

What is the site of origin of sinus rhythm in the heart?

SA node Signup and view all the answers

What is the characteristic of QRS complex in sinus rhythm?

Normal shape Signup and view all the answers

What is the rate of ventricular muscle in 3:1 block?

100/min Signup and view all the answers

What is the characteristic of PR interval in complete heart block?

Variable PR interval Signup and view all the answers

What is the characteristic of QRS complex in atrial flutter?

Broad and regular Signup and view all the answers