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Chapter 8 Flashcards

(10 cards)

1
Q

Hypertrophy refers to increase in muscle mass of

A

Myocardium

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2
Q

Can hypertrophy be completely diagnosed on an ekg?

A

No

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3
Q

Why ventricular hypertrophy occurs in left ventricle?

A
  • systemic hypertension (systolic >140)
  • aortic valve stenosis (must pump harder to push blood out)
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4
Q

Why ventricular hypertrophy occurs in right ventricle?

A

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

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5
Q

QRS characteristics of right ventricular hypertrophy

A
  • Abnormally large R wave in V1-4
  • Inverted T wave in V1
  • RAD (vector pulls towards hyper side)
  • Rightward rotation
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6
Q

Left ventricular hypertrophy criteria?

A
  • exaggerated QRS amplitude
  • LAD
  • Large S wave in V1
  • Large R wave in V5
  • Add S wave + R wave > 35
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7
Q

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

A

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

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8
Q

What is ventricular strain?

A

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

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9
Q

Atrial enlargement results in

A

Diphasic p wave (positive and negative)

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10
Q
A
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