Six-minute Walking and Pulmonary Function Test Outcomes during the Early Period after Lung Cancer Surgery with Special Reference to Patients with Chronic Obstructive Pulmonary Disease

Hiroaki Nomori, Kenichi Watanabe, Takashi Ohtsuka, Tsuguo Naruke, Keiichi Suemasu

研究成果: Article査読

16 被引用数 (Scopus)

抄録

Objective: To evaluate physical dysfunction during the early period after lung resection in patients with lung cancer and coexisting chronic obstructive pulmonary disease (COPD), we examined the relationship between the ratio of the forced expiratory volume in 1 second to the forced vital capacity (FEV 1/FVC%) and the results of a 6-minute walk (6MW) test before and after surgery. Methods: Eighty-three patients who underwent lobectomy for lung cancer were classified into three groups according to their preoperative FEV1/FVC: more than 70% (non-COPD, n=61), 60-69% (mild COPD, n=15), and 40-59% (moderate COPD, n=7). The 6MW and pulmonary function tests were performed before surgery and repeated 1 and 2 weeks after surgery. During the 6MW test, the distance covered during a 6MW test (6MWD) and the decrease in oxygen saturation (SpO2) were measured. Results: During both the preoperative and postoperative 6MW tests, the decrease in SpO2 correlated significantly with the preoperative FEV1/FVC% (p<0.001). The percentage decrease in 6MWD at 1 and 2 weeks after surgery correlated significantly with the preoperative FEV1/FVC% (p<0.001 and p=0.04, respectively), but not with the concomitant percentage reduction in vital capacity (VC). The differences of the decreases in postoperative 6MWD and SpO2 during the 6MW test were significant between the moderate and mild COPD patients and between the mild COPD and non-COPD patients (p<0.01-0.001). Conclusion: The decreases in 6MWD and SpO2 after surgery were significantly influenced by the preoperative FEV1/FVC%, but not by the decrease in VC. COPD patients have a limited capacity for walking during the early period after surgery due to significant oxygen desaturation.

本文言語English
ページ(範囲)113-119
ページ数7
ジャーナルJapanese Journal of Thoracic and Cardiovascular Surgery
52
3
DOI
出版ステータスPublished - 2004 3月

ASJC Scopus subject areas

  • 循環器および心血管医学

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