Which of the following is 100% accurate in verifying endotracheal tube placement?

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Multiple Choice

Which of the following is 100% accurate in verifying endotracheal tube placement?

No single test can guarantee endotracheal tube placement. The most reliable objective indicator is waveform capnography, which shows CO2 in exhaled gas when the tube is in the trachea, but even this is not 100% foolproof in all situations (low cardiac output, equipment issues, rare anatomical factors). Pulse oximetry monitors oxygenation rather than tube position and can remain normal for a time after malplacement. Syringe aspiration is not a dependable method for confirming placement. Because each method has limitations, none of the options alone is 100% accurate; the best approach is to use multiple confirming cues, with capnography as the primary objective test and adjunctive signs or imaging as available.

No single test can guarantee endotracheal tube placement. The most reliable objective indicator is waveform capnography, which shows CO2 in exhaled gas when the tube is in the trachea, but even this is not 100% foolproof in all situations (low cardiac output, equipment issues, rare anatomical factors). Pulse oximetry monitors oxygenation rather than tube position and can remain normal for a time after malplacement. Syringe aspiration is not a dependable method for confirming placement. Because each method has limitations, none of the options alone is 100% accurate; the best approach is to use multiple confirming cues, with capnography as the primary objective test and adjunctive signs or imaging as available.

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