Infarction

Question 1

Characteristic sign of ischemia is

Answer 1

Inverted t waves

Question 2

Elevation of the ST segment denotes

Answer 2

Injury

Question 3

The earliest consistent sign of acute infarction to read on EKG

Answer 3

ST elevation

Question 4

Persistent ST segment elevation that does not return to baseline in all the chest leads is caused by

Answer 4

A ventricular aneurysm

Question 5

Right bundle branch block with ST elevation in V1-V3 which can cause sudden cardiac death in individuals without heart disease

Answer 5

Brugada syndrome

Question 6

Brugada syndrome is a familial condition caused by dysfunctional …

Answer 6

Cardiac sodium channels

Question 7

Treatment for brugada syndrome involves

Answer 7

Implantable ICD

Question 8

Elevates the entire T wave off the baseline

Answer 8

Pericarditis

Question 9

ST segment depressed due to

Answer 9

Subendocardial infarction
Positive stress test
Digitalis

Question 10

The Q wave indicates

Answer 10

Necrosis

Question 11

Insignificant q waves are by definition

Answer 11

Less than one mm or .04 sec in duration

Question 12

A significant Q wave is

Answer 12

At least one small square wide and 1/3 of the QRS amplitude

Question 13

Q waves in leads V1-V4 indicate

Answer 13

Anterior infarction

Question 14

In acute posterior infarction looking at leads V1, V2 you would see

Answer 14

A large R wave and ST depression

Question 15

A lateral infarction is caused by an occlusion of the

Answer 15

Circumflex branch of the LCA

Question 16

An anterior infarction is due to an occlusion if the

Answer 16

Anterior descending branch of the LCA

Question 17

A posterior infarction is generally caused by an occlusion of the

Answer 17

Right coronary artery

Question 18

Inferior infarction is caused by an occlusion of

Answer 18

Right or left coronary artery depending on which one is dominant

Question 19

Hemiblocks are

Answer 19

Blocks of one of the two divisions or the left bundle branch

Question 20

The AV node, bundle or His and a variable twig of the left bundle branch receive blood supply from the

Answer 20

Right coronary artery

Question 21

Blood for the anterior branch of the left bundle branch and the right bundle branch is supplied by the

Answer 21

LAD

Question 22

Anterior hemiblock

Answer 22

Caused by LAD occlusion effecting the anterior branch, normal or slightly widened QRS

Question 23

Posterior hemiblock is

Answer 23

Usually associated with an MI, causes right axis deviation, have normal or slightly widened QRS, S1Q3

Question 24

Often produces low voltage amplitude in all leads with right axis deviation

Answer 24

COPD