NEW
Font size
WorksheetsEKG Chapter 14 Myocardial Infarction
Total questions: 20
Worksheet time: 11mins
Which of the following is indicative of myocardial injury?
ST elevation
ST depression
Significant Q wave
Inverted T wave
Which of the following is indicative of myocardial necrosis?
ST elevation
ST depression
Significant Q wave
Inverted T wave
An acute inferior wall STEMI has ST elevation in leads
I, aVL, V5—6.
V1—4.
II, III, aVF.
V1—2.
Which of the following is a reciprocal change seen in the area opposite an infarct?
ST elevation
ST depression
Tall, pointy T waves
Widened QRS complexes
An inverted T wave is indicative of
myocardial necrosis.
myocardial ischemia.
myocardial injury.
abnormal ventricular depolarization.
ST segment elevation is indicative of
myocardial necrosis.
myocardial ischemia.
myocardial injury.
abnormal atrial depolarization.
A posterior infarction is usually caused by occlusion of which coronary artery?
Left main
Circumflex
Left anterior descending
Right coronary artery
An inferior MI is most often caused by occlusion of which coronary artery?
Right coronary artery
Left main
Left main
Left anterior descending
An anterior MI is caused by occlusion of which coronary artery?
Left anterior descending
Posterior descending
Right
Circumflex
Mr. Johnson came to the hospital within the hour after his heart attack started. You would expect to see what indication of acute STEMI on his EKG?
ST segment elevation in the leads over the damaged area
ST segment depression in the leads over the damaged area
Significant Q waves in the leads over the damaged area
Tall, pointy P waves greater than 2.5 mms in Lead II or V1
The ________ of an old STEMI typically remains on the EKG forever.
ST segment elevation
ST segment depression
inverted T waves
significant Q wave
A STEMI typically
damages only the innermost layer of myocardium.
does not cause the development of significant Q waves on the EKG.
is dangerous because it can herald a subendocardial MI soon to come.
is an MI that damages the full thickness of the myocardium in a certain area.
Most MIs are caused by a
blood clot in the pulmonary artery.
coronary artery spasm.
blood clot in a coronary artery.
arrhythmia.
In a lateral wall MI, which coronary artery is occluded?
Right
Left anterior descending
Circumflex
Aorta
Mac Jacob is a 21-year-old black man who complains of shortness of breath and comes to the ER. His cardiac enzymes are normal, but his EKG shows some slight ST segment elevations with a "fish-hook" at the end of the QRS complexes in V2—4. This is consistent with
inferior MI.
early repolarization.
pericarditis.
right ventricular infarction.
Mr. Henry has ST segment elevations in II, III, and aVF along with reciprocal ST depression in I, aVL, and V1—4. Right-sided EKG shows ST elevation in V3—4R. His blood pressure is quite low. Mr. Henry is normally hypertensive. This description is consistent with
pericarditis.
early repolarization.
inferior MI complicated by a right ventricular infarction.
extensive anterior MI complicated by cardiogenic shock.
Mrs. Campho had a previous inferior MI about 20 years ago. What would you expect to see on her EKG that would be consistent with her old inferior MI?
ST elevation in II, III, and aVF
ST depression in II, III, and aVF
Significant Q wave in II, III, and aVF
Reciprocal ST depression in the anterior leads
The order in which an MI progresses through "the three Is" is which of these?
Ischemia, injury, infarction
Ischemia, infarction, injury
Infarction, ischemia, injury
Injury, infarction, ischemia
Which kind of MI is best seen by looking at the EKG upside down from behind?
Inferior
Anteroseptal
Posterior
Lateral
The MI in Figure 20 is
extensive anterior (anterior-lateral).
posterior.
lateral.
inferior.
