This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Nitroglycerine causes all except - 
Select and explain. 
A. Hypotension and bradycardia, B. Methemoglobinemia, C. Hypotension and tachycardia, D. Vasodilatation
A: Hypotension and bradycardia
Answer: A: Hypotension and bradycardia 
Explanation: Ans. is 'a' i.e., Hypotension and bradycardia Nitrates effect on BP & HRo Nitrates cause vasodilatation that results in: Hypotension Reflex tachycardia (not bradycardia) o Due to hypotension (caused by vasodilatation) there is reflex sympathetic stimulation --> stimulation of b1 receptor on hea --> tachycardia.