Deck 5: Ethics

Question 1

In most patients, the posterior wall of the left ventricle is supplied by the circumflex coronary artery.

Answer 1

False

Question 2

A normal ECG rules out an MI.

Answer 2

False

Question 3

Consider the presence of right ventricular infarction (RVI) if a patient with an inferior wall infarction becomes hypotensive after the administration of nitrates.

Answer 3

True

Question 4

In a patient experiencing an acute coronary syndrome, T-wave inversion suggests the presence of:

A) infarction.
B) ischemia.
C) injury.
D) cardiogenic shock.

Question 5

Anterior or lateral wall MIs are most often due to occlusion of the ___coronary artery.

A) Right
B) Left

Question 6

The clinical evidence of RVI involves three components:

A) substernal chest pain, jugular venous distention, and bibasilar crackles.
B) hypotension, jugular venous distention, and clear breath sounds.
C) muffled heart sounds, absent breath sounds, and hypotension.
D) hypertension, muffled heart sounds, and bibasilar crackles.

Question 7

Which of the following ECG changes is one of the earliest to occur during an infarction, but may have resolved by the time the patient seeks medical assistance?

A) Pathologic Q waves
B) Lengthening of the QT interval
C) Hyperacute T waves
D) Horizontal ST segments

Question 8

From what point should ST-segment deviation be measured?

Question 9

Explain what is meant by the phrase anatomically contiguous leads.

Question 10

When should you assess a patient for a possible posterior infarction?

Question 11

When should you suspect an RVI?

Question 12

A 72-year-old woman is experiencing a possible acute coronary syndrome. A 12-lead ECG has been obtained. As the health care professional reviewing the patient's ECG, you should attempt to categorize the patient into one of three groups. Name them. 1. 2. 3.