肺气肿胸腔镜下肺减容术的临床应用

目的探讨肺气肿的外科处理方法及疗效。方法对15例重度肺气肿的患者进行胸腔镜单、双肺减容术的外科治疗。患者男性12例,女性3例,平均年龄64.3岁。6例行部分肺切除术,1例行部分肺切除术加折叠术,8例行双肺减容术。术中计算机气道内监测CO2变化和顺应性改变,发现呼吸道阻力明显下降和肺顺应性增高,术后2例需呼吸机维持通气分别达7 d和10 d。其余患者呼吸机使用时间为4-62 h,平均26.2 h。术后肺持续漏气时间为3-56 d。平均9.2 d。结果全组患者无死亡,平均住院时间23 d,术后所有患者均获随访。经3、6和12个月分别检查肺功能,各项参数均有逐步好转。FEV1从0.39-0.55恢复至0.82-1.5,FVC从1.17-2.36恢复至2.22-3.1。胸片提示膈肌部分弧度从平面恢复弧形。活动能力从术前平卧和只行走10 m到术后可以步行至600 m以上。结论表明严重肺气肿的患者经胸腔镜下肺减容术后各方面肺功能指示均有明显改善,活动能力逐步好转,均能恢复生活自理。胸腔镜下肺减容术具有创伤小,疼痛轻,恢复快,具有美容和消除患者恐惧心理作用,为多数肺气肿患者所接受。     

Tidal Expiratory Flow Limitation at Rest as a Functional Marker of Pulmonary Emphysema in Moderate-to-Severe COPD

Background: Tidal expiratory flow limitation (EFL) is a step of paramount importance in the functional decline in COPD. Among mechanisms contributing to EFL, loss of airway-parenchymal interdependence could mostly be involved. Aim: To assess if EFL is a functional marker more frequently linked to prevalent pulmonary emphysema rather than to prevalent chronic bronchiolitis in COPD patients with moderate-to-severe airflow obstruction. Methods: Forty consecutive stable COPD patients with FEV₁ between 59 and 30% of predicted were functionally evaluated by measuring spirometry, maximal flow-volume curve and lung diffusion capacity (DL_CO) and coefficient of diffusion (K_CO). EFL was assessed by the negative expiratory pressure (NEP) method both in sitting and supine position. Chronic dyspnea was also scored by modified Medical Research Council (mMRC) scale. Results: In sitting position 13 patients (33%) were flow limited (FL) and 27 were non-flow limited (NFL). Only FEV₁/FVC, FEV₁ and MEF_25–75% were different between FL and NFL patients (p < 0.01). In supine position, however, among NFL patients in sitting position those who developed EFL, had significantly lower values of DL_CO and K_CO (p < 0.05) and higher mMRC score (p < 0.01), but similar values of FEV₁ as compared to those who did not have EFL. Conclusions: In COPD EFL in sitting position is highly dependent by the severity of airflow obstruction. In contrast, the occurrence of EFL in supine position is associated with worse DL_CO and K_CO and greater chronic dyspnea, reflecting a prevalent emphysematous phenotype in moderate-to-severe COPD patients.     

COPD-related Bronchiectasis; Independent Impact on Disease Course and Outcomes

Background: COPD and radiographic bronchiectasis frequently coexist but the effect of this on the clinical course of COPD is not fully understood. We determined the impact of bronchiectasis on clinical outcomes in COPD patients, independent of coexisting emphysema and bronchial wall thickening (BWT). Methods: COPD patients admitted with first exacerbation 1998–2008 were identified retrospectively using ICD10 codes J44.0,1,8,9. Patients with suitable CT scans were graded for severity of bronchiectasis, emphysema and BWT on a 5 point scale (0-absent, 1-minor, 2-mild, 3-moderate, 4-severe). Results: 406 patients (71 ± 11 years, 56% male, FEV₁ 52 ± 23% predicted) were included; 278 (69%) patients had bronchiectasis: minor, 112 (40%); mild, 81 (29%); moderate, 62 (22%); severe 23 (8%). Bronchiectasis severity correlated with severity of BWT (p < 0.001) but not emphysema (p = 0.090). Bronchiectasis independently determined sputum isolation of Pseudomonas aeruginosa (Odds ratio (OR) 1.39 (95% CI 1.07 to 1.80), p = 0.013) and atypical mycobacteria (OR 2.44 (95% CI 1.04 to 5.69), p = 0.040), annual respiratory admissions (p = 0.044) and inpatient days (p < 0.001), but did not predict survival (p = 0.256). Conclusions: Radiographic bronchiectasis in COPD patients is associated with increased respiratory infection and hospitalisation, independent of coexisting emphysema and BWT. COPD-related bronchiectasis is therefore an important diagnosis with potential implications for treatment.     

Conservative management of post-intubation tracheal tears—report of three cases

Iatrogenic tracheal rupture is a rare complication after intubation. We present three patients with tracheal tears. In all of these patients, a common finding was a lesion of the posterior tracheal wall with postoperative subcutaneous and emphysema as the first clinical sign of the rupture. Diagnosis and follow-up were based on clinical and endoscopic findings and chest computed tomography (CT) scans. In our cases with progressive subcutaneous and mediastinal emphysema or dyspnea, we performed a tracheotomy and bypassed the lesion with a tracheostomy tube to avoid an increase in air leakage into the mediastinum. Under broad-spectrum antibiotic therapy, no mediastinitis occurred and all patients survived without sequelae. Closure of tracheostomy was scheduled for 1-2 months after tracheal injury. Analysis of surgical and anesthesiological procedures revealed no abnormalities and the accumulation of tracheal injuries was considered as accidental. We found that in clinically stable patients with spontaneous breathing and with no mediastinitis, a conservative management of tracheal tears is a safe procedure.     

单肺移植结合对侧肺减容术治疗终末期肺气肿一例

目的　探讨单肺移植结合对侧肺减容术治疗终末期肺气肿的手术适应证及疗效。方法　对 1例呼吸机依赖的重症肺气肿、肺功能严重下降的 4 7岁患者行左肺移植。术后第 7天因患者对侧肺逐渐过度膨胀致纵隔左移 ,压迫移植肺 ,而行右侧胸腔镜辅助小切口肺减容术。结果　肺减容术后第 1天患者纵隔移位明显改善 ,移植肺扩张良好 ;术后第 9、15天移植肺 2次出现急性排斥反应 ,用免疫抑制剂治疗 ,并于术后第 15天行气管切开、呼吸机间断辅助呼吸 ,病情缓解 ;术后第 2 4天患者下床活动 ,第 2 6天拔除气管插管 ;术后 2个月检查患者肺功能明显改善 ;术后第 71天出院。结论　单肺移植结合对侧肺减容术能治疗重症肺气肿单肺移植后的对侧肺过度膨胀 ,明显改善肺功能。     

70例牙源性下行性坏死性纵隔炎临床分析

目的: 分析牙源性下行性坏死性纵隔炎患者的临床特征,为诊断和治疗提供参考。 方法: 回顾分析2014年1月—2016年12月上海交通大学医学院附属第九人民医院收治的牙源性下行性坏死性纵隔炎患者,收集、分析患者的一般资料、感染来源、临床症状、实验室检查、细菌培养、治疗和预后。采用SPSS 22.0软件包对数据进行统计学分析。 结果: 本组70例患者中,男57例,女13例,平均年龄57.8±11.42岁。主要的发病来源为下颌前磨牙及第一、第二磨牙（38.6%）。根尖周炎是最常见的牙源性感染的病因。治疗包括抗生素和经颈部纵隔引流（63例）、胸廓切开术（7例）。死亡率为5.7%。影响牙源性下行性坏死性纵隔炎患者预后的危险因素为发生并发症（P<0.005）和严重脓毒症或败血性休克（P<0.002）。 结论: 成功治疗牙源性下行性坏死性纵隔炎的关键是对疑似症状的迅速诊断、快速CT扫描和彻底的纵隔引流。     

Lung volume reduction surgery in lieu of pneumonectomy in an infant with severe unilateral pulmonary interstitial emphysema

A male infant with a prenatal diagnosis (at 20 weeks' gestation) of cystic adenomatoid malformation was delivered after 38 weeks' gestation (birth weight, 3 kg) and admitted to the neonatal intensive care unit. During the first few days of life, he developed mild respiratory distress; a chest radiograph and computed tomography scan showed multiple cystic areas in the left lower lobe with hyperinflation and herniation of the upper lobe across the midline. At 3 weeks of age, a left lower lobectomy was performed for presumed cystic malformation. To our surprise the pathology reports revealed pulmonary interstitial emphysema. The postoperative chest radiograph was unchanged, and mechanical ventilation was necessary and required progressively increasing ventilatory settings to provide adequate support. High-frequency oscillatory ventilation and selective right bronchus intubation failed to improve lung function. After 3 weeks, a left thoracotomy was repeated and lung volume reduction was performed with removal of 50' of the peripheral hyperinflated parenchyma. Postoperative recovery was rapid; the child was weaned from the ventilator after 3 days and discharged after 3 weeks. Follow-up chest X-rays showed a normally expanded right lung with mediastinal structures back to midline and a small left lung. Favorable results persisted at 3 years of follow-up. This first and successful experience with lung volume reduction in a neonate suggests that infants who need removal of a large portion of lung parenchyma to achieve adequate ventilation and gas exchange, lung volume reduction surgery should be considered as an alternative to pneumonectomy.     

Treatment of dysphagia in esophageal carcinoma: Transthoracic En-Bloc esophagectomy and reconstruction 48 hours later

In 82 consecutive patients with esophageal cancer (90% squamous cell carcinoma, 10% adenocarcinoma) transthoracic “en bloc” esophagotomy with regional lymphadenectomy was performed. The reconstruction with gastric interposition was carried out with delayed urgency in a second operation 48–72 h after the initial procedure. The results of this group were compared to a group of 65 patients who had transmediastinal esophagectomy without thoractotomy and mediastinal as well as suprapancreatic lymphadenectomy and immediate reconstruction by gastric interposition. The number of postoperative risk situations concerning cardiopulmonary features were comparable in both groups. The 30-day mortality rate and postoperative morbidity was not significantly different between both patient groups (mortality rate: transthoracic: 6.6%, transmediastinal: 7.7%). The advantages of a 2-stage procedure are that esophagectomy and especially mediastinal lymphadenectomy can be performed precisely without time pressure. After 2 days the stomach is hypotonic and dilated as a result of truncal vagotomy and can easily be elevated to the neck. The interval of 48–72 hours was chosen because the postoperative right-to-left shunt has nearly normalized after this time period. En bloc esophagectomy and reconstruction with delayed urgency can be performed without disadvantages compared to a 1-stage procedure. It can especially be recommended for operations in which esophagectomy and mediastinal lymphadenectomy are difficult and wearisome.