<prompt> A positive fistula test during Siegelisation indicates-Ossicular discontinuityPara-labyrinthitis due to erosion of lateral semicircular canalCSF leak through the earFixation of stapes bone  <response>: Fistula test is done to Assess the Vestibular FunctionBasis: In case of fistulous communication between middle ear and labyrinthAny pressure change inExternal auditory canal produced by pressing tragus or by siegels speculumwill stimulate lateral semicircular canal Ans 11 Ref Tuli 1e p. 939Produce nystagmusvertigo 