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A Blom-Singer prosthesis is used:

A
As a ventilation tube in otitis media with effusion
B
To close a perforation in nasal septum
C
To divert tracheal air into oesophagus for voice production in laryngeal patients
D
In stapedectomy to conduct sound from incus to oval window
High-Yield Explanation
Blom-Singer prosthesis is used in laryngectomised patients to divert tracheal air to oesophagus for production of voice.Prosthesis used to ventilate middle ear in otitis media with effusion is called a ''grommet" or ventilation tube.Septal button made of silicon or Teflon is used to close septal perforation.Stapes replacement prosthesis made of Teflon, tefwire, platinum or stainless steel is used in stapedectomy.
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