Measurement of Length to Suction
Suction should only be to the tip of the ETT, and should never exceed more than 1cm beyond the tip of the ETT, to prevent mucosal irritation and injury. Measurement of length to suction is to be predetermined at shift commencement. Length is determined by using the centimetre markings on the ETT; and by adding the length of additional space of the ETT adapter (usually 1-1.5 cm). If patient on HFOV or HFJV, allow for different lengths of adaptors.
If the suction catheter does not have centimetre markings, the length for suctioning should be documented on a measuring tape that is clearly visible on the cot.