Question

1. an acute myocardial infarction is more likely to occur in the larger, thick - walled left ventricle, which needs more______than the right ventricle.

a. oxygen and glucose
b. force to pump
c. blood and oxygen
d. electrical activity

1. which of the following statements regarding congestive heart failure (chf) is false?

a. stridor is a common lung sound heard on exam.
b. it can be caused by diseased heart valves.
c. it can be treated with nitroglycerin.
d. ankle edema is a common finding.

1. cardiogenic shock often occurs soon after a(n):

a. hypertensive emergency
b. acute myocardial infarction
c. aortic aneurysm
d. unstable angina attack

1. sudden death is usually the result of______, in which the heart fails to generate an effective blood flow.

a. acute myocardial infarction (ami)
b. atherosclerosis
c. premature ventricular contractions (pvcs)
d. cardiac arrest

1. disorganized, ineffective quivering of the ventricles is known as:

a. ventricular fibrillation
b. asystole
c. ventricular standstill
d. ventricular tachycardia

1. which of the following is not a cause of chf?

a. chronic hypotension
b. heart valve damage
c. myocardial infarction
d. long - standing high blood pressure

1. signs and symptoms of shock include all of the following except:

a. elevated heart rate
b. pale, clammy skin
c. air hunger
d. elevated blood pressure

1. which of the following changes in heart function occurs in patients with chf?

a. a decrease in heart rate
b. enlargement of the left ventricle
c. enlargement of the right ventricle
d. a decrease in blood pressure

1. physical findings of ami include skin that is______because of poor cardiac output and the loss of perfusion.

a. pink
b. white
c. gray
d. red

Explanation:

1. The left ventricle has more muscle mass and requires more oxygen and glucose to function properly, making it more prone to myocardial infarction.
2. Stridor is a high - pitched sound associated with upper airway obstruction, not a common lung sound in CHF. CHF can be caused by diseased heart valves, treated with nitroglycerin, and ankle edema is common.
3. Cardiogenic shock often follows acute myocardial infarction due to significant heart muscle damage and reduced cardiac output.
4. Cardiac arrest is when the heart fails to generate effective blood flow, often leading to sudden death.
5. Ventricular fibrillation is the disorganized, ineffective quivering of the ventricles.
6. Chronic hypotension is not a typical cause of CHF. Heart valve damage, myocardial infarction, and long - standing high blood pressure can lead to CHF.
7. In shock, blood pressure typically decreases, not increases. Elevated heart rate, pale and clammy skin, and air hunger are common signs.
8. In CHF, the left ventricle often enlarges as the heart tries to compensate for reduced function.
9. In AMI, due to poor cardiac output and perfusion, the skin can appear gray.

Answer:

1. A. oxygen and glucose
2. A. Stridor is a common lung sound heard on exam.
3. B. acute myocardial infarction
4. D. cardiac arrest
5. A. ventricular fibrillation
6. A. Chronic hypotension
7. D. elevated blood pressure
8. B. Enlargement of the left ventricle
9. C. gray