Page 206 - Clinical Application of Mechanical Ventilation
P. 206
172 Chapter 6
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Figure 6-15A Use of a commercially made harness to secure an oral endotracheal tube.
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Figure 6-15B One method of securing the tube of a nasally intubated patient.
The ET tube cuff pressure should be 25 mm Hg or less to allow adequate capil-
The ET tube cuff pressure lary perfusion in the trachea. For patients with hypotension, the cuff pressure should
should be 25 mm Hg or less
to minimize pressure-induced be kept even lower to compensate for the reduced capillary flow due to hypotension.
injuries to the trachea. Figure 6-16 shows the use of a pressure manometer and syringe to adjust the ET tube
cuff pressure. Figure 6-17 shows a photograph of the Posey Cufflator with a built-in ma-
nometer. Air may be added to the ET tube cuff by pumping the bulb on the cufflator.
Air may be removed from the ET tube cuff by opening the release valve on the cufflator.
Minimal Occlusion Volume and Minimal
Leak Technique
If a cuff pressure manometer is not readily available, the minimal occlusion volume
or minimal leak technique may be used to reduce the likelihood of pressure-induced
injuries to the trachea caused by excessive cuff pressure.
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