This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
Nitrates can be used for all of the following conditions except 
Select and explain. 
A. Congestive hea failure, B. Cyanide poisoning, C. Esophageal spasm, D. Renal colic
D: Renal colic
Answer: D: Renal colic 
Explanation: nitrates are used in CHF Angina pectoris Myocardial infarction Biliary colic Diffuse esophageal spam Cyanide poisoning Refer kDT 6/e p 527