21st August 2023

A 7-week-old baby is brought to the emergency department with a history of paroxysmal cough for the past 3 days

A 7-week-old baby is brought to the emergency department with a history of paroxysmal cough for the past 3 days. The coughing episodes end with a high-pitched ‘whoop’ sound and sometimes induce vomiting. The baby is apyrexial and was exclusively breastfed until now.

Which of the following is the most appropriate management?