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Thorax 59:337-341 doi:10.1136/thx.2003.006783
  • Sleep disordered breathing

Is there a familial association between obstructive sleep apnoea/hypopnoea and the sudden infant death syndrome?

Table 3

Effect of resistive loading

SIDS parents (n = 9) Controls (n = 9) Change from baseline to resistance (parents – controls) p value for differences
Before During Before During
Ti = inspiratory time, Te = expiratory time; fR = respiratory frequency; Vt = tidal volume; Ve =  minute volume.
Ti (s) 1.26 2.56 1.65 3.95 −0.87 0.021
(1.21, 1.71) (1.69, 2.68) (1.32, 2.04) (3.00, 4.26) (−1.75, −0.14)
Te (s) 2.16 2.84 2.69 5.42 −1.3 0.015
(1.70, 2.48) (2.27, 3.98) (2.23, 3.37) (3.68, 6.73) (−2.15, −0.46)
fR (breaths/min) 17.9 11.8 14.4 6.9 −0.4 0.374
(15.0, 21.0) (9.3, 15.8) (11.0, 17.6) (5.8, 9.1) (−2.7, 4.5)
Vt (l) 0.64 0.66 0.68 1.09 0.05 0.953
(0.47, 0.67) (0.59, 1.04) (0.57, 0.92) (0.74, 1.30) (−0.25, 0.17)
Ve (l/min) 10.00 8.17 9.13 7.06 1.02 0.051
(8.83, 11.05) (7.24, 12.09) (8.90, 11.5) (5.87, 7.48) (0.14, 5.51)
Vt/Ti (l/s) 23.4 18.6 25.5 17.0 2.62 0.021
(22.8, 29.7) (15.3, 29.9) (24.1, 28.8) (13.9, 19.6) (0.17, 12.31)

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