EKG VIII Lecture Powerpoint

Question 1

Ischemia will manifest on an EKG as…

Answer 1

…ST depression

Question 2

ST depression indicates…

Answer 2

….Ischemia, but also potentially infarction (depending on cardiac enzyme findings) in the form of a NSTEMI

Question 3

ST elevation indicates…

Answer 3

Acute injury within past 24-48 hrs

Question 4

T wave inversion or ST elevation or depression across all leads is pathonomonic of what condition?

Answer 4

Pericarditis

Question 5

Subendocardial infarction

Answer 5

Greatest risk area of ischemia because has high demand for O2 fed by most distal branches of coronary arteries, manifests with ST depression or elevation

Question 6

Prolonged ischemia can be reversed by….

Answer 6

….correcting with interventional dilation in a cath lab

Question 7

Significant Q wave >1mm wide and a large portion of the QRS presence is indicative of….

Answer 7

Infarction (current or old)

Question 8

Punumbra

Answer 8

Direct death of tissue from blocked artery that is not perfused, surrounded by ischemic and injured tissue in a circular area around the source

Question 9

Lesions that occlude LAD represent ___% of MI’s, RCA represents ___%, and circumflex represents ___%

Answer 9

50, 30, 20

Question 10

Inferior wall MI is represented in leads…

Answer 10

II, III, and AVF

Question 11

Lateral wall MI is represented in leads…

Answer 11

I, AVL, V5, V6

Question 12

Septal/anterior wall MI is represented in leads…

Answer 12

Septum: V1,2,
Anterior: V3,4

Question 13

Anterio/septal wall MI occludes what artery?

Answer 13

LAD

Question 14

Posterior wall MI findings on EKG

Answer 14

ST DEPRESSION in V1 ,2, 3,

Question 15

Early treatment of MI (3)

Answer 15

Coronary angioplasty with balloon angiogram 
Stent placement (bare metal or drug eluding)
-Coronary artery bypass graft either by harvesting saphenous vein, radial artery, or left internal thoracic artery

Question 16

Lateral wall MI occludes what artery?

Answer 16

Circumflex

Question 17

Posterior and inferior MI occludes what artery?

Answer 17

Posterior descending artery