Chapter 8

Question 1

Hypertrophy refers to increase in muscle mass of

Answer 1

Myocardium

Question 2

Can hypertrophy be completely diagnosed on an ekg?

Answer 2

No

Question 3

Why ventricular hypertrophy occurs in left ventricle?

Answer 3

• systemic hypertension (systolic >140)
• aortic valve stenosis (must pump harder to push blood out)

Question 4

Why ventricular hypertrophy occurs in right ventricle?

Answer 4

-pulmonary hypertension (lung obstructions like asthma)
-pulmonary valve stenosis

Question 5

QRS characteristics of right ventricular hypertrophy

Answer 5

• Abnormally large R wave in V1-4
• Inverted T wave in V1
• RAD (vector pulls towards hyper side)
• Rightward rotation

Question 6

Left ventricular hypertrophy criteria?

Answer 6

• exaggerated QRS amplitude
• LAD
• Large S wave in V1
• Large R wave in V5
• Add S wave + R wave > 35

Question 7

For left ventricular hypertrophy you would see the T wave behave how? In what leads?

Answer 7

Inverted in V5/V6, long gradual decrease and sharp return

Question 8

What is ventricular strain?

Answer 8

Ventricle straining against resistance, resulting in depressed and humped ST segment

Question 9

Atrial enlargement results in

Answer 9

Diphasic p wave (positive and negative)