[The extent of paradoxical thoracoabdominal motion during exercise was improved with oxygen therapy in patients with stable moderate to severe chronic obstructive pulmonary disease]

Full Abstract

OBJECTIVE: To assess the synergetic change of thoracoabdominal motion in COPD patients during incremental exercise testing, and to evaluate the effect of oxygen therapy on thoracoabdominal synergetic motion. METHODS: 30 stable moderate to severe COPD patients performed incremental exercise test with ergometer twice while breathing either air or 30% oxygen. Thoracoabdominal motion (assessed by TCD/VT) was monitored with respigraph during the whole test. RESULTS: 18 of 30 patients had TCD/VT > 1.20 during maximal exercise. TCD/VT at maximal exercise (TCD/VTmax) was significantly correlated with FEV1, FVC, MVV and PaCO2(r = -0.66, -0.63, -0.51, and 0.51), but not correlated with DLCO. The thoracoabdominal synergetic motion could be obviously improved with oxygen therapy. CONCLUSIONS: The change of thoracoabdominal synergetic motion during exercise in COPD patients was related with ventilatory function and blood gases. Oxygen therapy could obviously ameliorate paradoxical thoracoabdominal motion.

Author information

Author/s: Guo, Z (Z); Cai, Y (Y); Liang, Y (Y);

Affiliation: Department of Pulmonary Disease, Zhongshan Hospital, Shanghai Medical University, Shanghai 200032, China.

Journal and publication information

Publication Type: English Abstract; Journal Article

Journal: Zhonghua jie he he hu xi za zhi = Zhonghua jiehe he huxi zazhi = Chinese journal of tuberculosis and respiratory diseases (Zhonghua Jie He He Hu Xi Za Zhi), published in China. (Language: chi)

Reference: 2000-Mar; vol 23 (issue 3) : pp 141-3

Dates: Created 2002/01/07; Completed 2002/01/30; Revised 2006/11/15;

PMID: 11778484, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

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