Augstkalns I, Bradshaw E G
Anaesthesia. 1977 Apr;32(4):367-70. doi: 10.1111/j.1365-2044.1977.tb11641.x.
Patients for bronchoscopy were randomly allocated to two groups, one receiving 4 ml 4% lignocaine spray and a control group which was not sprayed. There were no significant differences in the incidence of cough and spasm on recovery between the groups. The findings of a double-blind study comparing patients sprayed with 0-9% saline or lignocaine showed a significantly higher incidence of spasm in the saline group.
