Answer: The two most frequent causes of tracheal bleeding are due to frequent suctioning and lack of humidity. Regarding frequent suctioning, one should not decrease the frequency of suctioning just because of the appearance of some blood. Rather, this should be a cue to switch to softer suction catheters. I usually recommend red rubber catheters, which are not suction catheters, but are actually they are urinary catheters, technically called "coude" catheters.
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