Rinne's test is negative in: (A) Presbycusis, (B) CSOM, (C) Labyrinthitis, (D) Meniere's disease
Answer is B. A negative Rinne test is seen in conductive deafness - when bone conduction is greater than air conduction. Chronic suppurative otitis media is a disease of the middle ear and hence causes conductive deafness. (Ref: Diseases of EAR, NOSE AND THROAT by PL DHINGRA - 6th Edition. Page no. 22)