Review Question - QID 109042

A 13-day-old boy is brought by his mother for eye redness and ocular discharge. The mother reports that the patient has developed a cough and nasal discharge. Pregnancy and delivery were uncomplicated but the mother had limited prenatal care during the third trimester. Immediately after delivery, the baby was given silver nitrate drops and vitamin K. His temperature is 99°F (37.2°C), blood pressure is 81/52 mmHg, pulse is 135/min, and respirations are 36/min with an oxygen saturation of 98% O2 on room air. Upon visual examination of the eyes, mucoid ocular discharge and eyelid swelling are noted. A fluorescein test is negative. On lung exam, scattered crackles are appreciated. A chest radiograph is performed that shows hyperinflation with bilateral infiltrates. Which of the following is the most appropriate pharmacotherapy?