Commonest sign of aspiration pneumonitis is :
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.
Cyanosis
Tachypnea
Crepitations
Rhonchi