Ketamine is useful as an anesthetic agent in-
(Refer: Morgan and Mikhail’s Clinical Anaesthesiology, 5th edition, pg no. 182 – 184)

Ketamine is a potent bronchodilator and relieves bronchospasm →Intravenous anaesthetic agent of choice in asthmatic
Ketamine increases ICT, IOP and cardiac oxygen demand, therefore contraindicated in other three conditions
Note-Inhalation anaesthetic agent of choice in asthmatics is halothane.
Ischemic heart disease
Intracranial hemorrhage
Hyperactive airways
Glaucoma