رجل عمره ٧٦ سنة عنده انسداد رئوي مزمن، يستخدم أكسجين منزلي ٢ لتر ١٦ ساعة يومياً. الممرض يزوره في البيت، ويراجع معه السلامة. زوجته تطبخ على الغاز في المطبخ القريب. أي عبارة منه تدل على خطر يحتاج تصحيحاً؟

A 76-year-old man with COPD uses home oxygen at 2 L/min for 16 hours a day. On a home visit the nurse reviews safety; his wife cooks on gas in the nearby kitchen. Which statement indicates a hazard needing correction?

1. I secure the cylinder so it cannot fall
2. I keep the cylinder away from the cooker and heater
3. I put petroleum jelly on my lips because the oxygen dries them
4. I don't let anyone smoke in the house

Answer: C) I put petroleum jelly on my lips because the oxygen dries them. Petroleum products such as Vaseline are flammable with oxygen; water-based moisturisers are used instead. The other statements are correct.