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Table 3 Principal Results as a Function of Tube Size.

From: Endotracheal tube cuff pressure in three hospitals, and the volume required to produce an appropriate cuff pressure

  7.0 mm 7.5 mm 8.0 mm 8.5 mm P
Patients with measured cuff pressure >30 cmH 2 O (%) 57 57 47 30 0.444
Measured Cuff Pressure (mmHg) 32 [22, 52] 38 [24, 49] 30 [16, 38] 24 [21, 40] 0.467
Measured Cuff Volume (ml) 3.9 [3.0, 5.0] 4.5 [2.7, 5.0] 4.6 [3.5, 6.1] 3.8 [3.0, 5.0] 0.616
Volume Required for 20 cmH 2 O (ml) 2.6 [2.0, 3.1] 2.5 [1.8, 3.0] 3.0 [2.5. 4.1] 3.3 [2.0, 3.9] 0.143
  1. Results presented as medians [interquartile range] or percent.