A 6 months old baby coming with /o increasing difficulty in breathing of 2 days duration and on examination baby is afebrile & B/L wheeze & CXR shows B/L hyperinflation of the lungs with normal WBC count, the diagnosis is –

Clinical manifestations of bronchiolitis The usual course of the disease is 1-2 days of → Fever, Rhinorrhea, Cough This is followed by - Wheezing   Cyanosis   Tachypnea  Nasal flaring      The breathing pattern is shallow Rales, crepitation and Ronchi  Respiratory distress → retraction of intercostal space & suprasternal notch. Liver and spleen are pushed downward because the hyperinflated emphysematous lungs push the diaphragm downward. Anteroposterior diameter of the chest is increased and hyper-resonance is noted on percussion. The leukocyte count is normal or slightly elevated. Chest X-ray Hyperinflation of the lung The diaphragm is pushed down                  Lung fields are abnormally translucent.