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Table 3 Model study: protocol B

From: Determinants of the cuff-leak test: a physiological study

Parameter

R = 8

R = 16

R = 32

 

C = 20

C = 50

C = 100

C = 20

C = 50

C = 100

C = 20

C = 50

C = 100

Leakpause (ml)

96 ± 9

99 ± 6

96 ± 9

105 ± 10

103 ± 11

110 ± 8

123 ± 12c

115 ± 9

118 ± 12c

Leakconv (ml)

275 ± 11a

257 ± 9

245 ± 8

278 ± 6ab

261 ± 10

253 ± 9

287 ± 13ab

268 ± 7

255 ± 6

  1. Results are means ± SD. C, model compliance (ml/cmH2O); Leakconv, cuff-leak volume measured when the cuff remained deflated during both inspiration and expiration; Leakpause, cuff-leak volume measured when the cuff was deflated at the end of 3 s of inspiratory pause; R, model resistance (cmH2O/litre per second).
  2. aSignificantly different from the corresponding value at C = 100 ml/cmH2O.
  3. bSignificantly different from the corresponding value at C = 50 ml/cmH2O.
  4. cSignificantly different from the corresponding value at R = 8 cmH2O/litre per second.