ECG part 3

Question 1

How is cardiac hypertrophy determined?

Answer 1

looking at voltage in V1 and V5

Question 2

With R ventricular hypertrophy what happens to the R wave in V1, V2, V3, and V4?

Answer 2

V1 = large
V2-4 = progressively smaller

Question 3

With L ventricular hypertrophy, what happens to the wave in V1 and V5 and what is the combined voltage?

Answer 3

V1 = large S wave
V5 = large R wave
voltage > 35mV

Question 4

If the patient is experiencing ischemia what will the T wave look like?

Answer 4

inverted

Question 5

ST depression at rest in presence of chest pain

Answer 5

subendocardial infarction

Question 6

ST depression in absence of ischemia or angina

Answer 6

digitalis toxicity

Question 7

ST elevation/depression or presence of significant Q wave

Answer 7

diagnostic for acute infarction

Question 8

ST segment depression leads to what 3 things?

Answer 8

T wave inversion
ST segment changes
Q waves ID location of ischemia, injury, or infarction