A 2-month-old bay presents to the Paediatric Emergency Department with coughing, wheezing and rapid breathing for the last 2 days. The infant was born at 38 weeks' gestation; his b... A 2-month-old bay presents to the Paediatric Emergency Department with coughing, wheezing and rapid breathing for the last 2 days. The infant was born at 38 weeks' gestation; his birth weight is 3.5 kg and now weighs 5.2 kg. He had developed a runny nose, imitability and difficulties feeding without having to pause several times. His 3-year-old brother has a cold with fever and cough. Physical examination shows a prolonged expiratory time, nasal flaring and subcostal retractions. Cardiac auscultation results are normal and the spleen and liver are of normal size for the child's age. Blood pressure 86/58 mmHg, Heart rate 146 /min, Respiratory rate 56 /min, Temperature 38.6° C, Oxygen saturation 96% on room air. Which of the following is the most appropriate next step in making a definitive diagnosis? A. Chest X-ray B. Throat swap C. Bronchoscopy D. Nasopharyngeal aspirate Read more