Section III

Question 1

Ischemia at rest

Answer 1

changes in T wave or ST segment that are out of place; T wave usually has same polarity as QRS

Question 2

Ischemia during exercise

Answer 2

ST segment depression;
up-sloping: cause of many false positives
Down-sloping: almost certainly ischemia
Horizontal: likely associated with ischemia

Question 3

Acute STEMI infarction

Answer 3

elevated ST segment; may have t wave inversion; greater ST displacement = greater ischemic area;

Question 4

Indication of old infarction

Answer 4

nonsignificant Q’s may be found in VI, III, AVR alone; at least 1/3 the height of the R wave; must be new; usually in more than one lead

Question 5

Old Inferior infarction

Answer 5

Significant Q’s in II, III, AVF

Question 6

Old anterior infarction

Answer 6

Significant Q’s in 1, V1, V2, V3

Question 7

Old lateral infarction

Answer 7

Significant Q’s in V4, V5, V6

Question 8

BBB on old infarction

Answer 8

all results would be invalid