Commonest sign of aspiration pneumonitis is :
Cyanosis
Tachypnea
Crepitations
Rhonchi
Answer is B (Tachyapnea): Aspiration pneumonitis is characterized by an acute onset of dyspnea, tachypnea, bronchospasm and cyanosis with a chest radiograph often showing diffuse opacities. - Harrisons Dyspnea tachypnea are ceainly the earliest manifestations to appear following aspiration of any material. The commonest and the earliest 'sign' of aspiration pneumonitis thus would be tachypnea.