一氧化二氮 (笑氣)
別名: Entonox, Laughing gas
藥物類別: Inhalational Anesthetic
一氧化二氮（俗稱笑氣）是獸醫在全身麻醉期間常用的一種安全氣體，通常與氧氣及其他麻醉藥物搭配使用，以確保您的寵物在手術過程中保持熟睡且無痛。它能幫助主要麻醉藥物更快發揮作用，並讓獸醫能減少其他藥物的劑量。手術結束後，它會非常迅速地排出體外，讓寵物能平穩地甦醒。
劑量必須由獸醫依你寵物的個別情況決定。切勿在沒有獸醫指導下給予人類藥物或其他寵物的處方藥。
用途
- Adjunct for induction and maintenance of anaesthesia
- Adjunct for induction and maintenance of anaesthesia
給藥方式
Inhalational
可能的副作用
- Diffusion hypoxia (if oxygen is not supplemented upon discontinuation)
- Megaloblastic changes in bone marrow (with exposure lasting a few hours)
- Agranulocytosis (with prolonged exposure of a few days)
注意事項與禁忌
- Patients with air-filled spaces within the body (e.g., pneumothorax, gastric dilatation/GDV, intestinal obstruction)
- Marked respiratory compromise (due to hypoxia risks)
- Raised intracranial pressure (due to associated increases in cerebral blood flow)
- **Human Safety & Scavenging:** Prolonged exposure can have serious adverse effects on human health. Active scavenging is essential. > **Important:** N2O is **not** absorbed by activated charcoal in passive scavenging systems. **Hypoxia Risk:** A minimum oxygen concentration of 30% is required during anaesthesia. The inspired concentration of oxygen may fall to critically low levels when N2O is used in rebreathing circuits during low flow rates. Do not use in such systems unless the inspired oxygen concentration can be measured on a breath-by-breath basis. **Diffusion Hypoxia:** Always supplement with 100% oxygen for 5-10 minutes after turning off N2O.
常見問題
一氧化二氮 (笑氣)用於寵物有什麼用途？
一氧化二氮（俗稱笑氣）是獸醫在全身麻醉期間常用的一種安全氣體，通常與氧氣及其他麻醉藥物搭配使用，以確保您的寵物在手術過程中保持熟睡且無痛。它能幫助主要麻醉藥物更快發揮作用，並讓獸醫能減少其他藥物的劑量。手術結束後，它會非常迅速地排出體外，讓寵物能平穩地甦醒。
一氧化二氮 (笑氣)對我的寵物安全嗎？
劑量必須由獸醫依你寵物的個別情況決定。切勿在沒有獸醫指導下給予人類藥物或其他寵物的處方藥。
本文僅供一般健康教育，不能取代專業獸醫意見。如寵物身體不適，請諮詢獸醫。