<prompt> Apnoea test is used for diagnosis of:Brain deathDiffuse axonal injuryAsthmaNone of the above  <response>: A neurologist, neurosurgeon, or intensivist generally performs the clinical brain death examination. Two examinations consistent with brain death 12 hours apa, or one examination consistent with brain death followed by a consistent confirmatory study generally is sufficient to declare brain death. Documentation of no brain stem function requires the following: nonreactive pupils; lack of corneal blink, oculocephalic dolls eyes, oculovestibular cold calorics reflexes; and loss of drive to breathe apnea test. The apnea test demonstrates no spontaneous breathing even when PaCO2 is allowed to rise above 60 mmHg. Ref: Schwazs principle of surgery 9th edition, chapter 42. 