Eustachian tube patency seen by ?: (A) Valsalva, (B) Methylene blue test, (C) Tonybee test, (D) All the above
Answer is D. Ans. is d i.e., All the above Tests for Eustachian tube patency Valsalva test Methylene blue test Sonotubometry Politzer test Toynbee test Frenzel maneuver Catheterization Inflation - Deflation test