Air hunger — the uncomfortable feeling of breathing difficulty — is one of the most common end-of-life symptoms that doctors work to ease.
空气饥渴——呼吸困难的不舒服感觉——是医生们努力缓解的最常见临终症状之一。
The treatment? Opiates, usually morphine.
治疗方法是什么呢?麻醉剂,通常是吗啡。
People sometimes ask why the treatment for painful breathing is a medication that can depress breathing. You’d guess that opiates would worsen air hunger.
人们有时会问,为什么治疗痛苦的呼吸困难的药物是一种会抑制呼吸的药物。你可能会觉得,麻醉剂会加重对空气的渴求。
The answer hinges on defining why air hunger is uncomfortable in the first place.
答案的关键在于弄清为什么空气饥渴让人不舒服。
Some researchers think the discomfort of air hunger is from the mismatch between the breathing our brain wants and our lungs’ ability to inflate and deflate. Opiates provide relief because they tune our brain’s appetite for air to what our body can provide. They take the “hunger” out of “air hunger.”
有些研究者认为,空气饥渴的不适源于大脑想要的呼吸量与肺部吸气和呼气的能力不相匹配。麻醉剂的作用在于它微微调整了大脑对空气的需求量,使之与身体能够提供的量相匹配。它将“空气饥渴”中的“饥渴”去除了。
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