Tables
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表1
Sulfur hexafluoride multiple breath washout and breathing pattern variables compared supine and sitting in 41 infants
Supine Sitting p-value Washout time s 33±6 34±7 0.19 Washout breaths n 13.4±2.3 12.9±1.9 0.009 FRC mL 185±47 189±54 0.21 FRC mL·kg−1b.w. 18.1±2.9 18.4±3.4 0.39 LCI 6.60±0.41 6.45±0.45 0.001 µ1/µ0 1.54±0.10 1.51±0.10 <0.001 µ2/µ0 4.46±0.59 4.26±0.59 <0.001 FRC CV% 2.0±1.2 2.0±1.5 0.75 LCI CV% 2.4±1.4 2.8±1.9 0.37 VDaw, CO2mL 21±4 20±4 0.003 VDaw, CO2/VT % 22±2.6 20.8±2.9 <0.001 VTmL 96±23 98±22 0.09 VT/FRC % 53±8 53±7 0.63 Respiratory rate breaths·min−1 24.3±4.3 22.9±2.9 <0.001 Minute ventilation mL·min−1 2263±323 2180±296 <0.001 CO2end-tidal % 5.85±0.32 5.92±0.34 0.002 Data are presented as mean±sd,unless otherwise stated. FRC: fuctional residual capacity; LCI: lung clearance index;VDaw: airway dead space;VT: tidal volume.
Supplementary Materials
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Supplementary Material
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