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How to judge the pressure of the cuff of endotracheal tube inflated properly 

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Author : Joe Wong
Update time : 2021-05-05 09:45:07
How to judge the pressure of the cuff of endotracheal tube inflated properly 

How to judge the pressure of the cuff  after the endotracheal tube is inserted into the trachea, the textbook says 30mmHg, it is impossible to measure each cuff with a pressure gauge in daily work, it always inflated more air into the cuff for some special postures to prevent endotracheal tube off position, but after a long time, it is likely to cause the local tracheal mucosal and cilia oppressive ischemia.
Belows are 2 skills to properly inflate the cuff of endotracheal tube

1. Minimal leak inflation technology. Method: First inflate the cuff until the sound of air leakage being heared, and then slowly withdraw the air until you can just hear the slight sound of air leakage during the inhalation period. After that, in order to replenish the amount of leaked air, it is necessary to inject an appropriate amount of gas in the capsule, but it is still subject to the slight sound of leakage that can always be heard. This method can minimize tracheal damage.

2. Leak-free inflation technology. Method: On the basis of the above method, slowly inject a small amount of air into the cuff, and listen while injecting the air until no air leakage sound is heard. After that, the internal pressure of the cuff is measured regularly, and a small amount of air needs to be injected repeatedly when the internal pressure of the cuff decreases.