Table 1—

Mean best sniff nasal inspiratory pressure(SNIP) in the first 10 sniffs (best SNIP1–10) compared with mean best SNIP in the next 10 sniffs (best SNIP11–20)

Patients nBest SNIP1–10 cmH2OBest SNIP11–20 cmH2Op-valueBest SNIP1–20 cmH2O
Myotonic dystrophyA 59/C 050.3±24.852.7±25.50.00353.7±25.6
SCIA 41/C 061.4±27.067.3±29.60.000167.7±29.3
PoliomyelitisA 32/C 051.5±21.255.9±25.80.013557.2±25.4
DMDA 13/C 1524.9±15.727.1±16.00.1428.4±16.4
Spinal amyotrophyA 5/C 632.5±16.733.0±16.50.4833.6±17.0
Myasthenia gravisA 10/C 043.5±19.649.7±22.30.06551.0±21.8
Idiopathic scoliosisA 10/C 044.6±18.351.9±24.50.0652.4±24.4
Cerebellar ataxiaA 9/C 061.2±28.766.8±30.50.1468.0±30.3
Cystic fibrosisA 5/C 2056.5±21.060.5±22.50.0261.5±21.9
Other neuromuscular or restrictive pulmonary disordersA 64/C 1045.2±28.049.2±29.10.000152.5±36.0
  • Data are presented as n or mean±sd, unless otherwise stated. The mean best SNIP for all 20 sniffs (best SNIP1–20) is also reported. SCI: spinal cord injury; DMD: Duchenne muscular dystrophy; A: adults; C: children.