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Chapter 16. Drugs Affecting the Cardiovascular and Renal Systems
____ 1. Vera, age 70, has isolated systolic hypertension. Calcium channel blocker dosages for her should be:
1. Started at about half the usual dosage
2. Not increased over the usual dosage for an adult
3. Given once daily because of memory issues in the older adult
4. Withheld if she experiences gastroesophageal reflux
____ 2. Larry has heart failure, which is being treated with digoxin because it exhibits:
1. Negative inotropism
2. Positive chronotropism
3. Both 1 and 2
4. Neither 1 nor 2
____ 3. Furosemide is added to a treatment regimen for heart failure that includes digoxin. Monitoring for this combination includes:
1. Hemoglobin
2. Serum potassium
3. Blood urea nitrogen
4. Serum glucose
____ 4. Which of the following create a higher risk for digoxin toxicity? Both the cause and the reason for it must be correct.
1. Older adults because of reduced renal function
2. Administration of aldosterone antagonist diuretics because of decreased potassium levels
3. Taking an antacid for gastroesophageal reflux disease because it increases the absorption of digoxin
4. Doses between 0.25 and 0.5 mg/day
____ 5. Serum digoxin levels are monitored for potential toxicity. Monitoring should occur:
1. Within 6 hours of the last dose
2. Because a reference point is needed in adjusting a dose
3. After three half-lives from the starting of the drug
4. When a patient has stable renal function
____ 6. Rodrigo has been prescribed procainamide after a myocardial infarction. He is monitored for dyspnea, jugular venous distention, and peripheral edema because they may indicate:
1. Widening of the area of infarction
2. Onset of congestive heart failure
3. An electrolyte imbalance involving potassium
4. Renal dysfunction
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