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: Anaesthesia
Which of the following anaesthetic agents is contraindicated in patients with hypertension ? 
Select and explain. 
A. Ketamine, B. Propofol, C. Etomidate, D. Diazepam
A: Ketamine
Answer: A: Ketamine 
Explanation: Ketamine increases BP, HR & myocardial O2 demand, therefore it is contraindicated in IHD, hypertensive heart disease and aortic aneurysm.