How should infant bronchitis be treated?

Patient's question:

Detailed medical condition and consultation purpose: The child makes snoring sounds through the nose while feeding, and it seems like there is phlegm in their throat. Their breathing is normal while sleeping. When awake and at rest, their breathing is normal, but when playing, it seems like there is phlegm in their throat making snoring sounds.
Duration of the current illness: Since the child was discharged from the hospital, it has been more than 60 days.
Medical history: The child was hospitalized for 10 days due to bronchitis at 38 days old. Before admission, they did not have a runny nose, no snoring sounds, no coughing, and normal body temperature. During the admission examination (X-ray), it may have been due to the child being over-wrapped, causing excessive sweating, and the examination room being too cold. After the examination, the child

Doctor's answer:

Hello: According to the situation you described, it still falls under the symptoms of tracheitis. Key treatment points
1. For infants with high fever and systemic toxic symptoms, regardless of whether white blood cell count is elevated, send blood culture once and strive to perform a tracheal secretion culture once.
2. Symptomatic and supportive therapy is the main approach. Increase air humidity and maintain fluid volume. Use intravenous drip of maintenance fluids as needed.
3. Oxygenation is the primary measure. Oxygen flow rate: 1–3 L/min (nasal cannula method), >3–5 L/min (mask method). Monitor changes in respiratory and heart rate before and after oxygenation, and adjust the oxygen flow rate as needed.
4. Antibiotics
- For mild cases, antiviral oral liquid or intramuscular ribavirin should be used as a principle, or erythromycin derivatives may also be taken orally.
- For infants under 6 months and more severe cases, penicillin or erythromycin derivatives are the first choice. If fluid supplementation is needed, it can be administered via intravenous route.
5. Corticosteroids
- For severe infants with severe dyspnea, hypoxia, and widespread dense pulmonary signs, short-term intravenous drip of hydrocortisone or dexamethasone, or oral prednisone, may be used.