Eustachian tube patency seen by -: (A) Valsalva, (B) Methylene blue test, (C) Toyn bee test, (D) All the above
Answer is D. Ans. is 'd' i.e., All the above Tests for Eustachian tube patencyValsalva testo Politzer testo Catheterizationo Methylene blue testo Toynbee testo Inflation-Deflation testo Sonotubometry'o Frenzel maneuver