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Short-term effects of postural drainage with clapping versus autogenic drainage on oxygen saturation and sputum recovery in patients with cystic fibrosis
Giles DR, Wagener JS, Accurso FJ, Butler-Simon N
Chest 1995 Oct;108(4):952-954
clinical trial
4/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

To compare the short-term effects of postural drainage with clapping (PD) and autogenic drainage (AD) on oxygen saturation, pulmonary function, and sputum recovery, we studied ten patients with cystic fibrosis (CF) randomly treated with PD or AD on separate days. Pulse oximetry was monitored and sputum was collected during and for 1 h following each treatment. Pulmonary function was measured before and then 1, 15, and 60 min after each treatment. There was no significant difference in the amount of sputum recovered with AD (14.0 +/- 3.5 g) versus PD (10.4 +/- 3.0 g) and no significant differences in pulmonary function occurred. Oxygen saturation during PD fell from 93.3 +/- 0.7% to 91.2 +/- 0.8% (p < 0.01) and required 15 min following treatment to return to baseline. Oxygen saturation did not fall during AD and increased to 94.5 +/- 0.7% by 1 h following treatment (baseline, 93.3 +/- 0.8%; p < 0.01). We conclude that AD is less likely to produce oxygen desaturation and may be better tolerated by patients with CF, while producing similar benefits in sputum clearance.

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