رجل عمره ٧٧ سنة في الجناح على أكسجين ٤ لتر بالقنية الأنفية منذ ٣ أيام بسبب التهاب رئوي، والجو في الغرفة جاف. يشتكي جفاف الأنف وتشققه ونزفاً بسيطاً عند التمخط. التشبع ٩٥٪. ما التدخل الأنسب؟

A 77-year-old man on the ward has had oxygen at 4 L/min by nasal cannula for 3 days for pneumonia, and the room air is dry. He reports a dry, cracked nose with minor bleeding when blowing it. SpO2 95%. What is the most appropriate intervention?

1. Humidified oxygen and a water-based nasal gel
2. Apply petroleum jelly inside the nose
3. Stop the oxygen entirely until the nose heals
4. Raise the flow to 8 L through the same cannula

Answer: A) Humidified oxygen and a water-based nasal gel. Dry oxygen at moderate or high flow dries membranes; humidification and water-based moisturisers help. Petroleum products are a fire hazard, and nasal cannula flow is not usually raised above 6 L.