Re: [問題] 可以請教一下體內空氣的問題嗎~"~...
看板medstudent (醫學生)作者spicy (loma~loma~ya)時間15年前 (2010/12/07 10:16)推噓3(3推 0噓 15→)留言18則, 4人參與討論串2/2 (看更多)
※ 引述《triticeal (triticeal cartilage)》之銘言：
: 因為感覺我關鍵字抓不對...
: 結果一直找不到相關的資料
: 想問一下前輩
: 打iv時有時候不小因會把空氣打進去，這個空氣應該有個最大量限制吧？大概是多少？
: (可以的話也可以提供我關鍵字...)
: 另外如果是做Rubin test，我找不到到底該注入多少co2為上限。
: 不知道能不能稍微指點一下...感謝！
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1.
http://qjmed.oxfordjournals.org/content/98/3/231.full
裡面提到: (抱歉我沒學標顏色 @@)
In humans, the fatal dose is "uncertain" but is estimated as " 200–300cc."
A much lower volume can prove fatal if a right-to-left shunt allows air to
bypass the lungs and enter the systemic circulation...
至於其中200~300 ml的出處從http://www.ncbi.nlm.nih.gov/pubmed/11176104來
2.
http://emedicine.medscape.com/article/761367-overview
可以自己仔細看看
裡面可以看到重點有:
(2a)
The key factors determining the degree of morbidity and mortality in venous
air emboli are related to
~~the volume of gas entrainment,
~~the rate of accumulation, and
~~the patient’s position at the time of the event.
為什麼說是重點?因為致死體積會受到上述因素影響~
(2b)
Traditionally, it has been estimated that more than 5 mL/kg of air displaced
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
into the intravenous space is required for significant injury (shock or
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cardiac arrest) to occur.However, complications have been reported with as
little as 20 mL of air (the length of an unprimed IV infusion tubing) that
was injected intravenously....
個人結論:一般週邊IV而言，10ml 的空氣應該還算是相當安全的
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