ECG III: Chamber enlargement Flashcards Preview

Year 2 Cardiovascular > ECG III: Chamber enlargement > Flashcards

Flashcards in ECG III: Chamber enlargement Deck (14):
1

what are three etiologies for atrial enlargement?

mitral / tricuspid disease
ischemia
HTN

2

what is P mitrale?

LA conduction abnormality

3

what is P pulmonale?

RA conduction abnormality

4

what is the morphology of P waves in atrial abnormality?

RAA - tall, peaked, P waves in lead II
LAA - notched P waves in lead II, wide and deep terminal forces in V1

5

what is the duration of P waves in atrial abnormality?

greater than 0.12 s

6

which lead is the best for looking at waves and intervals?

lead II

7

what are two general etiologies of ventricular enlargement?

pressure overload
volume overload

8

what are the features of the R waves and S waves in RVH?

R wave - tall waves over right precordium
S wave - deep waves over left precordium

9

what is the morphology of the QRS complex in RVH?

usually normal

10

what is the morphology of the ST segment and T wave in RVH? which leads is this seen in?

ST depression with upward convexity
inverted T waves

right precordial leads

11

a tall peaked P wave in lead II indicates what condition?

RAA

12

what is the duration of QRS in LVH?

CAN be prolonged

13

what is the amplitude of QRS in LVH?

usually high voltages

14

what is the vector of QRS in LVH?

QRS axis in two planes