背景本研究旨在探讨 EIT 引导的瑜伽呼吸训练对食管癌患者术后肺部并发症 (PPC) 的影响。材料和方法 共有 62 名患者接受了食管癌根治性切除术。食管癌患者被随机分为标准护理组，或在AICU EIT指导下接受额外的完整呼吸练习的干预组。食管切除术后拔管后，通过 EIT 评估肺功能，包括通气中心 (CoV)、依赖静默空间 (DSS) 和非依赖静默空间 (NSS)。结果最终分析61例老年食管癌患者（对照组31例，EIT组30例）。 44 例患者在食管切除术后出现肺部并发症，其中对照组 27 例（87.1%），EIT 组 17 例（36.7%）（RR，0.42（95% CI：0.26，0.69）。最常见的肺部并发症是胸膜胸腔积液的发生率，EIT 组为 30%，对照组为 74.2%，RR 为 0.40（95% CI：0.23，0.73）。EIT 组首次出现肺部并发症的时间明显长于对照组。对照组（风险比，HR，0.43；95% CI 0.21 至 0.87；P=0.019）。在AICU标准化护理中加入术后呼吸练习可以进一步改善肺功能，减少食管癌术后肺部并发症。

BACKGROUND This study aimed to investigate the impact of EIT-guided yoga breathing training on postoperative pulmonary complications (PPCs) for esophageal cancer patients. MATERIAL AND METHODS Total of 62 patients underwent radical resections of esophageal cancer. Esophageal cancer patients were randomized to the standard care group, or the intervention group receiving an additional complete breathing exercise under the guidance of EIT in AICU. Following extubation after the esophagectomy, pulmonary functions were evaluated by EIT with center of ventilation (CoV), dependent silent spaces (DSS), and non-dependent silent spaces (NSS). RESULTS Sixty-one older esophageal cancer patients (31 in the Control group and 30 in the EIT group) were included in the final analysis. Forty-four patients experienced pulmonary complications after esophagectomy, 27 (87.1%) in the Control group and 17 (36.7%) in the EIT group (RR, 0.42 (95% CI: 0.26, 0.69). The most common pulmonary complication was pleural effusion, with an incidence of 30% in the EIT group and 74.2% in the Control group, with RR of 0.40 (95% CI: 0.23, 0.73). Time for the first pulmonary complication was significantly longer in the EIT group than in the Control group (hazard ratio, HR, 0.43; 95% CI 0.21 to 0.87; P=0.019). Patients in the EIT group had significantly higher scores in CoV, DSS, and NSS than in the Control group. CONCLUSIONS Guided by EIT, the addition of the postoperative breathing exercise to the standardized care during AICU could further improve pulmonary function, and reduce postoperative pulmonary complications after esophagectomy.