This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CHF, Angina Pectoris and Myocardial Infarction, Subject name: Pharmacology
All of the following drugs are useful for long-term treatment of congestive hea failure except: 
Select and explain. 
A. Digoxin, B. Ramipril, C. Dobutamine, D. Spironolactone
C: Dobutamine
Answer: C: Dobutamine 
Explanation: Dobutamine is indicated only for the acute t/t of decompensated CHF. Cardiac glycosides (digoxin) can be used for acute treatment as well as maintenance therapy of CHF. ACE inhibitors and spironolactone are indicated only for chronic CHF.