Question 1

T wave inversion seen with ischemia is both inverted and asymmetrical, meaning that the right and left sides are not the same.

Accepted Answer

A) True 
 B)False

Question 2

The coronary arteries satisfy increased myocardial oxygen demands by increasing coronary blood flow primarily through vasodilation.

Accepted Answer

A) True 
 B)False

Question 3

To evaluate ST segment depression or elevation the ST segment is compared against the:

Accepted Answer

A)  PR segment. 
B)  P wave. 
C)  QT interval. 
D)  QRS complex. 
A)  PR segment. 
B)  P wave. 
C)  QT interval. 
D)  QRS complex.

Question 4

The ST segment:

Accepted Answer

A)  begins where downward slope of the R wave extends below the baseline and ends at the point where the S wave deflects back up to the baseline. 
B)  is the flat line that follows the QRS complex and connects it to the T wave. 
C)  represents the entire ventricular repolarization. 
D)  appears as a curved, sloping line although it may vary by 1.5 to 2.0 mm in some precordial leads. 
A)  begins where downward slope of the R wave extends below the baseline and ends at the point where the S wave deflects back up to the baseline. 
B)  is the flat line that follows the QRS complex and connects it to the T wave. 
C)  represents the entire ventricular repolarization. 
D)  appears as a curved, sloping line although it may vary by 1.5 to 2.0 mm in some precordial leads.

Question 5

Myocardial infarction can occur without the development of Q waves.

Accepted Answer

A) True 
 B)False

Question 6

ST segment elevation:

Accepted Answer

A)  occurs with myocardial ischemia. 
B)  is the earliest reliable sign that myocardial infarction has occurred. 
C)  tells us the myocardial infarction is old. 
D)  usually returns to the baseline within a few minutes. 
A)  occurs with myocardial ischemia. 
B)  is the earliest reliable sign that myocardial infarction has occurred. 
C)  tells us the myocardial infarction is old. 
D)  usually returns to the baseline within a few minutes.

Question 7

If ECG changes are seen in leads V1, V2, V3 and V4, we call it a/an _________ wall infarction.

Accepted Answer

A)  inferior 
B)  lateral 
C)  anteroseptal 
D)  posterior 
A)  inferior 
B)  lateral 
C)  anteroseptal 
D)  posterior

Question 8

Inverted T waves associated with myocardial ischemia indicate that ischemia is present through the ________ of the myocardium.

Accepted Answer

A)  full thickness 
B)  outer wall 
C)  inner lining 
D)  middle layer 
A)  full thickness 
B)  outer wall 
C)  inner lining 
D)  middle layer

Question 9

Inverted T waves and ST segment depression are considered two characteristic signs of myocardial:

Accepted Answer

A)  inflammation. 
B)  injury. 
C)  effusion. 
D)  ischemia. 
A)  inflammation. 
B)  injury. 
C)  effusion. 
D)  ischemia.

Question 10

As a matter of practice, lead II of the ECG will provide enough information to detect myocardial injury and MI.

Accepted Answer

A) True 
 B)False

T wave inversion seen with ischemia is both inverted and asymmetrical, meaning that the right and left sides are not the same.

The coronary arteries satisfy increased myocardial oxygen demands by increasing coronary blood flow primarily through vasodilation.

To evaluate ST segment depression or elevation the ST segment is compared against the:

The ST segment:

Myocardial infarction can occur without the development of Q waves.

ST segment elevation:

If ECG changes are seen in leads V1, V2, V3 and V4, we call it a/an _________ wall infarction.

Inverted T waves associated with myocardial ischemia indicate that ischemia is present through the ________ of the myocardium.

Inverted T waves and ST segment depression are considered two characteristic signs of myocardial:

As a matter of practice, lead II of the ECG will provide enough information to detect myocardial injury and MI.

Anatomy and Electrophysiology of the Heart

The Electrocardiogram

Analyzing the Electrocardiogram

Heart Rate

Regularity

P-Waves

QRS Complexes

PR Intervals

ST Segments, T-Waves, QT Intervals, and U-Waves

Overview of Dysrhythmias

Origin and Clinical Aspects of Sinus Node Dysrhythmias

Origin and Clinical Aspects of Atrial Dysrhythmias

Origin and Clinical Aspects of Junctional Dysrhythmias

Origin and Clinical Aspects of Ventricular Dysrhythmias

Origin and Clinical Aspects of AV Heart Blocks

Pacemakers and Implanted Cardioverter-Defibrillators

12 Lead ECGS

Atrial Enlargement and Ventricular Hypertrophy

Bundle Branch Block

Other Cardiac Conditions and the ECG

Putting It All Together

Filters

Exam 20: Myocardial Ischemia and Infarction

T wave inversion seen with ischemia is both inverted and asymmetrical, meaning that the right and left sides are not the same.

The coronary arteries satisfy increased myocardial oxygen demands by increasing coronary blood flow primarily through vasodilation.

To evaluate ST segment depression or elevation the ST segment is compared against the:

The ST segment:

Myocardial infarction can occur without the development of Q waves.

ST segment elevation:

If ECG changes are seen in leads V1, V2, V3 and V4, we call it a/an _________ wall infarction.

Inverted T waves associated with myocardial ischemia indicate that ischemia is present through the ________ of the myocardium.

Inverted T waves and ST segment depression are considered two characteristic signs of myocardial:

As a matter of practice, lead II of the ECG will provide enough information to detect myocardial injury and MI.

Anatomy and Electrophysiology of the Heart

The Electrocardiogram

Analyzing the Electrocardiogram

Heart Rate

Regularity

P-Waves

QRS Complexes

PR Intervals

ST Segments, T-Waves, QT Intervals, and U-Waves

Overview of Dysrhythmias

Origin and Clinical Aspects of Sinus Node Dysrhythmias

Origin and Clinical Aspects of Atrial Dysrhythmias

Origin and Clinical Aspects of Junctional Dysrhythmias

Origin and Clinical Aspects of Ventricular Dysrhythmias

Origin and Clinical Aspects of AV Heart Blocks

Pacemakers and Implanted Cardioverter-Defibrillators

12 Lead ECGS

Atrial Enlargement and Ventricular Hypertrophy

Bundle Branch Block

Other Cardiac Conditions and the ECG

Putting It All Together

Filters