Q: Colorimetric capnography is a reliable method to identify misplacement of nasogastric tube (NGT) position in mechanically ventilated patients?
A) Yes
B) No
Answer: A
Although not frequently used for this purpose, a meta-analysis of five studies showed a colorimetric capnography to have a sensitivity of 88 to 100 percent and a specificity of 99 to 100 percent to identify misplacement of the nasogastric tube into the airway in mechanically ventilated patients.
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Reference:
Bennetzen LV, Håkonsen SJ, Svenningsen H, Larsen P. Diagnostic accuracy of methods used to verify nasogastric tube position in mechanically ventilated adult patients: a systematic review. JBI Database System Rev Implement Rep 2015; 13:188.
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