After the nurse teaches the patient about the use of carvedilol (Coreg) in preventing anginal episodes, which statement by a patient indicates that the teaching has been effective?
a. "Carvedilol will help my heart muscle work harder."
b. "It is important not to suddenly stop taking the carvedilol."
c. "I can expect to feel short of breath when taking carvedilol."
d. "Carvedilol will increase the blood flow to my heart muscle."
ANS: B
Patients who have been taking ?-adrenergic blockers can develop intense and frequent angina if the medication is suddenly discontinued. Carvedilol (Coreg) decreases myocardial contractility. Shortness of breath that occurs when taking ?-adrenergic blockers for angina may be due to bronchospasm and should be reported to the health care provider. Carvedilol works by decreasing myocardial oxygen demand, not by increasing blood flow to the coronary arteries.
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