%0期刊文章%A ELBEHAIRY,AMANY F.%A Faisal,Azmy%A McIsaac,Hannah%A Domnik,Nicolle J.%A Milne,Kathryn M.%A James,Matthew D.%NEDER,J。Alberto%,J。Alberto%A o'Donnell,Denis E.%a%t orthopnoea的患者患有晚期COPD%D 2021%R 10.1183/13993003.00754-2020%J欧洲呼吸期刊%P 2000754%p 2000754%v 57%n 3%X许多患有严重严重的严重严重的患者,慢性阻塞性肺疾病(COPD)报告了静止时的不愉快呼吸道感觉,这通过采用仰卧位(Orthopnoea)进一步扩大。这种急性症状恶化的机制知之甚少。有十六名高级COPD患者和正呼Noea病史和16个年龄和性别匹配的健康对照接受了肺功能测试(PFTS)和详细的感官机能 - 机械测量值(包括Induration神经驱动器))在坐姿和仰卧位置通过隔膜肌电图(EMGDI),食道压力(PES)和胃压(PGA)评估。患者具有严重的气流阻塞(1 s强迫呼气量(FEV1):40±18%PER)和肺部过滤。不管该职位如何,给定潮汐体积(即更大的神经力学解离(NMD))的灵感能力(IC)和较高的IND具有较高的IND,呼吸不适的强度较高,更高的分钟通风(V'E)和较高与对照组相比,呼吸频率(FB)(全p <0.05)。对于仰卧位置的对照,IC与坐姿相比增加了0.48 l,V'e的下降较小,主要是由于FB降低(所有P <0.05)。相比之下,IC在COPD患者中保持不变,但动态肺依从性(CLDYN)在仰卧位中降低(p <0.05)。呼吸不适,呼吸的吸气工作(WOB),Insins努力,IND,NMD和神经源性解耦合在仰卧位的COPD患者中都增加了(P <0.05),但在健康对照组中没有增加。 Orthopnoea was associated with acute changes in IND (r=0.65, p=0.01), neuroventilatory uncoupling (r=0.76, p=0.001) and NMD (r=0.73, p=0.002).In COPD, onset of orthopnoea coincided with an abrupt increase in elastic loading of the inspiratory muscles in recumbency, in association with increased IND and greater NMD of the respiratory system.Orthopnoea, a troublesome symptom in patients with severe COPD, is associated with increased neural drive to the diaphragm and heightened respiratory effort to compensate for abrupt augmentation of load–capacity imbalance of the inspiratory muscles https://bit.ly/2ZLvyiI %U //www.qdcxjkg.com/content/erj/57/3/2000754.full.pdf