Chewing ability and desaturation during chewing in patients with COPD

Monaldi Archives for Chest Disease

Takeo Shibui¹  Takeshi Nomura¹  Akira Katakura²  Takeshi Terashima³  Tatsu Matsuzaki³  Takahiro Nakajima³  Eri Iwami³ 

[1] Department of Oral Medicine and Maxillofacial Surgery, Tokyo Dental College Ichikawa General Hospital;Department of OralMaxillofacial Surgery, Tokyo Dental College;Department of Respiratory Medicine, Tokyo Dental College Ichikawa General Hospital;

关键词: Periodontitis;    COPD;    chewing ability;    desaturation;    sarcopenia;   

DOI  :  10.4081/monaldi.2019.1090

来源: DOAJ

【 摘 要 】

Chewing ability is essential to maintain nutrition status and can be associated with oral conditions, sarcopenia, and lung function in patients with chronic obstructive pulmonary disease (COPD). Herein, our pilot study investigated the chewing ability and degree of desaturation during chewing in patients with COPD (n = 41) and control subjects (n = 22). Subjects chewed a color-changing chewing gum for 1 minute and chewing ability was assessed by the color of the chewed gum, which was scored from 1 (very poor) to 5 (very good). Arterial oxygen saturation (SpO2) was monitored using a pulse oximeter and the difference in SpO2 was determined by comparison between before and during chewing. The mean color score of the chewed gum was lower in the COPD group than in the control group (3.1±0.7 vs 4.2±0.9, p<0.0001). Muscle mass loss (p<0.05), <20 remaining teeth (p<0.005), and COPD (p<0.001) were risk factors for poor chewing ability. The mean SpO2 decreased by 0.78±1.46% during gum chewing for 1 min. The mean SpO2 during gum chewing (95.1±2.4%) was lower than before gum chewing (95.9±1.7%) (p<0.05). The reduction of SpO2 was greater in COPD patients who had fewer remaining teeth (p<0.05). COPD patients with SpO2 reduction >4% during the 6-minute walk test showed greater reduction during gum chewing (p<0.05). Our results suggest that COPD patients with fewer remaining teeth exhibit poor chewing ability and greater desaturation during chewing.

【 授权许可】

Unknown