PT  - JOURNAL ARTICLE
AU  - Tomomi Ichiba
AU  - Tetsuo Miyagawa
AU  - Takeshi Kera
AU  - Toru Tsuda
AU  - Fumio Kokubu
TI  - Late-breaking abstract: Efficacy of relaxation posture in patients with chronic obstructive pulmonary disease (COPD)
DP  - 2011 Sep 01
TA  - European Respiratory Journal
PG  - p3641
VI  - 38
IP  - Suppl 55
4099  - http://erj.ersjournals.com/content/38/Suppl_55/p3641.short
4100  - http://erj.ersjournals.com/content/38/Suppl_55/p3641.full
SO  - Eur Respir J2011 Sep 01; 38
AB  - Background: Relaxation postures are recommended to reduce the work of breathing and dyspnea in patients with COPD. Semi-fowler position, forward-leaning posture and orthopnea position are used efficiently. However, it is not clear that the effects of these positions in reducing dyspnea and work of breathing in patients with COPD.The purpose of this study is to clarify efficacy of relaxation posture.Method: Thirty-eight stable outpatients with COPD participated in the study. We measured mouth occlusion pressure (P0.1), VCO2, VO2, tidal volume, heart rate variability and degree of relaxation used by visual analogue scale (VAS) in quiet breathing at sitting, forward-leaning sitting and semi-fowler position. We also measured pulmonary function and maximal inspiratory pressure (PImax). We analyzed these data depend on GOLD classification. Data analysis was performed by using sof tware SPSS Statistics 17.0.Results: The following respiratory function in 38 patients were FVC 2.86±1.08L, FEV 1.0 1.40±0.76L, FEV1.0% 48.6±14.3%, %FEV1.0 52.2±23.3%, FRC 3.84±1.24L, RV 2.96±0.95, PImax 58±22.7cmH2O.There were no significant differences in P0.1 and P0.1/PImax among each position. However, VAS in semi-fowler position was more reduced than sitting on multiple comparison (p<0.05). In the GOLD classification, P0.1 on forward-leaning sitting significantly increased in stage4 compared stage1 and stage2 (p<0.01) and also P0.1/PImax on every position significantly increased in stage4 compared stage1 and stage2 (p<0.01).Conclusions: Semi-fowler position may be most effective to reduce respiratory output of and dyspnea in patients with COPD.