Infarction Flashcards Preview

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Flashcards in Infarction Deck (24):
1

Characteristic sign of ischemia is

Inverted t waves

2

Elevation of the ST segment denotes

Injury

3

The earliest consistent sign of acute infarction to read on EKG

ST elevation

4

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

A ventricular aneurysm

5

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

Brugada syndrome

6

Brugada syndrome is a familial condition caused by dysfunctional ...

Cardiac sodium channels

7

Treatment for brugada syndrome involves

Implantable ICD

8

Elevates the entire T wave off the baseline

Pericarditis

9

ST segment depressed due to

Subendocardial infarction
Positive stress test
Digitalis

10

The Q wave indicates

Necrosis

11

Insignificant q waves are by definition

Less than one mm or .04 sec in duration

12

A significant Q wave is

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

13

Q waves in leads V1-V4 indicate

Anterior infarction

14

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

A large R wave and ST depression

15

A lateral infarction is caused by an occlusion of the

Circumflex branch of the LCA

16

An anterior infarction is due to an occlusion if the

Anterior descending branch of the LCA

17

A posterior infarction is generally caused by an occlusion of the

Right coronary artery

18

Inferior infarction is caused by an occlusion of

Right or left coronary artery depending on which one is dominant

19

Hemiblocks are

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

20

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

Right coronary artery

21

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

LAD

22

Anterior hemiblock

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

23

Posterior hemiblock is

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

24

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

COPD