Table 1A.

The Effect of Pharyngeal Fluid Infusion on Physiological Responses

SupinePProneP
ControlResponseControlResponse
Swallow occurrence
 (% of the total infusions)
 Active sleep42* 98≤.012190≤.01
 Quiet sleep096≤.01595≤.01
Swallow frequency
 (swallows per min),
  mean (SEM)
 Active sleep0.7 (0.2)* 32  (2.2)≤.010.5 (0.2)21.3 (1.9) ≤.01
 Quiet sleep0 (0) >28  (2.8)≤.010.01 (0) 23 (1.9) ≤.01
Arousal occurrence
 (% of the total infusions)
 Active sleep33* 50NS10 50≤.01
 Quiet sleep054≤.01063≤.01
  • * Indicates P ≤ .01, active versus quiet sleep;

  • indicates P ≤ .01 prone versus supine; NS indicates not significant P > .01.