It has been suggested that respiratory muscle dysfunction plays a major role in the development of acute ventilatory failure in patients with chronic obstructive pulmonary disease (COPD). In this study, wedevised a respiratory muscle relaxation maneuverusing wedge-shapedwooden plates, with which pressure was exerted on the intercostal and accessory respiratory muscles by hand, or by tapping with a woodenhammer,for 15-20 minutes twice a day. The muscle relaxation maneuverwas performed in 5 moderate to severe p…
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