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Acute lobar atelectasis. A comparison of two chest physiotherapy regimens
Stiller K, Geake T, Taylor J, Grant R, Hall B
Chest 1990 Dec;98(6):1336-1340
clinical trial
4/10 [Eligibility criteria: Yes; Random allocation: No; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; 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*

Fourteen cases of acute lobar atelectasis were alternately allocated to one of two chest physiotherapy regimens for treatment. Treatment in group 1 comprised positioning, vibrations, hyperinflation, and suction, and in group 2, treatment consisted of hyperinflation and suction alone. Treatment in either group was given hourly for six hours. Patients in group 1 had a significantly higher mean percentage resolution of their atelectasis (mean value 60.1%), as seen on chest roentgenogram, after one treatment intervention than patients in group 2 (mean value 7.6%; p < 0.006). After the intensive six-hour treatment period, the difference between the groups was marginally statistically significant, still favoring group 1 over group 2 (p < 0.055). Follow-up roentgenograms at 24 and 48 hours revealed no significant difference between the treatment groups (p > 0.10 and > 0.20, respectively). These results suggest that, at least initially in the course of acute lobar atelectasis, positioning and vibrations add to the efficacy of a treatment of hyperinflation and suction alone.

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