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
Nitrates are given in all except 
Select and explain. 
A. Congestive hea failure, B. Renal colic, C. Cyanide poisoning, D. Esophageal spasm
B: Renal colic
Answer: B: Renal colic 
Explanation: Nitrates are not effective in renal colic GTN/ NTG: DOC for acute attack of angina Uses of Nitrates: A- Angina B- Biliary colic C- Cyanide poisoning (DOC- Hydroxocobalamin) D- Dil ka Daura (MI) E- Esophageal spasm F- Failure