Palpatory thud, audible slap is seen in
A sharp foreign body will only produce a cough and haemoptysis. A loose foreign body like seed may move up and down the trachea between the carina and the undersurface of vocal cords causing "audible slap" and "palpatory thud." Asthmatic wheeze may also be present. It is best heard at the patient's open mouth. Ref: PL Dhingra 7th edition of Ear, Nose and Throat; Pg no 365
Larynx
Tracheal foreign body
Bronchial foreign body
Laryngeal foreign body
None
Tracheal foreign body