Generation of ECG

Question 1

Right atrial enlargement ECG

Answer 1

Increased amplitude of P wave (over .4mV isn’t normal)

Question 2

Reasons for right atrial enlargement on ECG

Answer 2

Chronic respiratory disease
Congenital heart defect
Interatrial septal defect

In all you see a abnormally amplified P wave.

Question 3

Left atrial enlargement ECG

Answer 3

Increased duration of P wave and may see notched P wave.

Question 4

Reasons for left atrial enlargement on ECG

Answer 4

Mitral valve insufficiency
Aortic stenosis
Ventricular septal defect
Patent Ductus arteriosus