机械通气并发气胸的诊断及处理

气胸是机械通气常见的并发症，在成人呼吸窘迫综合征（ＡＲＤＳ）及慢性阻塞性肺部疾病（ＣＯＰＤ）中发生率较高，分别是２９．４％和２７．８％，且多为张力性气胸。预防气胸发生的简便方法是在保证有效通气量的前提下，适当降低潮气量。机械通气过程中，患者出现血氧饱和度下降、气道压力增高、患侧呼吸音降低、心率加快及呼吸困难等临床症状均高度提示并发气胸，试穿患侧胸腔有大量气体即可诊断。安置该侧胸腔闭式引流是有效的治疗方法。     

Routine postoperative chest x-ray following laparoscopic nephrectomy.

PURPOSE: To determine whether a routine postoperative chest x-ray is required following uneventful laparoscopic nephrectomy to rule out pneumothorax. METHODS: From June 1999 to May 2003, 308 laparoscopic nephrectomy cases were performed by 5 different surgeons. This consisted of 121 radical nephrectomies, 106 donor nephrectomies, 29 simple nephrectomies, 29 partial nephrectomies, and 23 nephroureterectomies. Of the 308 procedures, 186 postoperative chest x-ray s were obtained in the recovery room: 183 routinely and 3 for known intraoperative diaphragmatic injuries. Routine chest x-rays were not obtained in 122 cases due to the individual surgeon's preference. Of these 122 patients, 15 underwent chest x-ray performed while hospitalized secondary to pulmonary issues or fever. RESULTS: Of the 308 cases, 4 pneumothoraces were identified on chest x-ray. Three were identified in the patients who had intraoperative identification of diaphragmatic injury. The fourth pneumothorax was identified in a patient who did not have a routine postoperative chest x-ray but did have a chest x-ray obtained due to postoperative shoulder pain. The pneumothorax in this patient resolved spontaneously. No incidental findings existed of pneumothorax in any patient who underwent routine postoperative chest x-ray. CONCLUSION: In our series, a pneumothorax was identified either intraoperatively or based on postoperative clinical findings. None of the 183 routine postoperative chest x-rays changed patient management. Routine postoperative chest x-ray is not necessary in uncomplicated laparoscopic nephrectomy.     

老年自发性气胸误诊原因及影响疗效的因素分析

目的：为了分析老年人自发性气胸的临床特点,找出易发生误诊的原因以及影响疗效的因素;方法：对７５例老年人 性气胸的临床资料与同期６０例中青年人自发性气胸作对比分析;结果：老年气胸存在的基础病和发生并发症比例高,气急为最突出症状,以开放型,张力型气胸居多,与对照组有显著差异。老年气胸胸痛相对较轻,肺压缩程度显著低于对照组。老年气胸肺复张时间长,需行胸腔闭式引流术比例高。严重病例易发生呼吸衰竭和多器官衰     

Chest ultrasonography for the emergency diagnosis of traumatic pneumothorax and haemothorax: A systematic review and meta-analysis

ObjectiveTo assess the accuracy of the chest ultrasonography for the emergency diagnosis of traumatic pneumothorax and haemothorax in adults.Study designSystematic review and meta-analysis.MethodsPubMed, EMBASE, Scopus, Web of Science and LILACS (up to 2016) were systematically searched for prospective studies on the diagnostic accuracy of ultrasonography for pneumothorax and haemothorax in adult trauma patients. The references of other systematic reviews and the included studies were checked for further articles. The characteristics and results of the studies were extracted using a standardised form, and their methodological quality was assessed using the Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2). Primary analysis was performed considering each hemithorax as an independent unit, while secondary analysis considered each patient. The global diagnostic accuracy of the chest ultrasonography was estimated using the Rutter–Gatsonis hierarchical summary ROC method. Moreover, Reitsma’s bivariate model was used to estimate the sensitivity, specificity, positive likelihood ratio (LR + ) and negative likelihood ratio (LR–) of each sonographic sign. This review was previously registered (PROSPERO CRD42016048085).ResultsNineteen studies were included in the review, 17 assessing pneumothorax and 5 assessing haemothorax. The reference standard was always chest tomography, alone or in parallel with chest radiography and observation of the chest tube. The overall methodological quality of the studies was low. The diagnostic accuracy of chest ultrasonography had an area under the curve (AUC) of 0.979 for pneumothorax (Fig). The absence of lung sliding and comet-tail artefacts was the most reported sonographic sign of pneumothorax, with a sensitivity of 0.81 (95% confidence interval [95%CI], 0.71–0.88), specificity of 0.98 (95%CI, 0.97–0.99), LR+ of 67.9 (95%CI, 26.3–148) and LR– of 0.18 (95%CI, 0.11–0.29). An echo-poor or anechoic area in the pleural space was the only sonographic sign for haemothorax, with a sensitivity of 0.60 (95%CI, 0.31–0.86), specificity of 0.98 (95%CI, 0.94–0.99), LR+ of 37.5 (95%CI, 5.26–207.5), LR– of 0.40 (95%CI, 0.17–0.72) and AUC of 0.953.ConclusionNotwithstanding the limitations of the included studies, this systematic review and meta-analysis suggested that chest ultrasonography is an accurate tool for the diagnostic assessment of traumatic pneumothorax and haemothorax in adults.     

胸膜疾病纤维支气管镜胸腔诊治的应用价值

目的　探讨纤支镜代胸腔镜诊治胸膜疾病的临床应用价值。方法 对25例自发性气胸和22例胸腔积液患者在局麻下用纤支镜行开放式胸腔检查治疗术。结果 胸腔积液患者的诊断率为95.4%(21/22),包括胸膜转移癌11例,胸膜间皮瘤1例,胸膜结核6例,脓胸3例,气胸患者中13例寻找到肺大疱或胸膜破口,而48%(12例)镜下未见明显异常。结论 局麻下纤支镜代胸腔镜术安全、简便,可直视下观察胸腔病变并进行活检,有利明确积液病因,对脓胸和自发性气胸的诊治也有较大的意义。     

应用引流管侧释放套管针胸腔内置入双腔球囊导尿管治疗气胸29例临床观察

目的 观察改良胸腔套管针胸腔内置入双腔球囊导尿管治疗气胸的疗效和安全性.方法 29例自发性气胸患者,应用引流管侧释放套管针,经胸壁胸腔内置入可冲洗胸腔引流管治疗气胸.结果 2周后有效率90%(23/29),无明显不良反应.结论 应用引流管侧释放套管针,胸腔内置入双腔球囊导尿管治疗气胸是一种简单、安全、价廉和有效的方法.