硬膜下积脓的临床特点及治疗分析

目的探讨硬膜下积脓(Subdural empyema,SDE)的临床特点,为临床治疗提供借鉴。方法回顾性分析本科保守治疗的硬膜下积脓病例1例,并对已有文献报道进行综述,总结其临床、影像学表现及治疗。结果文献报道共50例患者,48例外科手术治疗,2例内科保守治疗。SDE起病急,主要临床表现为大脑镰综合征、抽搐,意识障碍。头磁共振表现:大脑镰及小脑幕下积脓呈长T1,长T2信号,FLAIR呈高信号,DWI呈高信号,积脓周围脑膜强化。治疗上主要以外科手术为主,少数病例通过合理的抗菌药物治疗也可好转。结论镰幕硬膜下积脓的临床特点是大脑镰综合征和镰幕下积脓;以外科治疗为主,内科保守治疗也是一种可行的治疗方法。     

改良纤维板剥脱术对慢性结核性脓胸患者围手术期临床指标、肺功能及术后并发症的影响

目的探讨改良纤维板剥脱术对慢性结核性脓胸患者围手术期临床指标、肺功能及术后并发症的影响。方法选取慢性结核性脓胸患者140例,采用随机数字表法分为对照组(70例)和试验组(70例),分别常规纤维板剥脱术和改良纤维板剥脱术治疗。比较两组患者围手术期临床指标,术后肺活量(VC)和最大通气量(MVV)增加量及术后胸腔再次感染率等。结果两组患者手术时间、术中出血量、术后24 h引流量、引流管放置时间及住院时间等围手术期临床指标比较差异无统计学意义(P0.05);试验组患者治疗后VC和MVV增加量均高于对照组,差异有统计学意义(P0.05);两组患者术后胸腔再次感染率比较差异无统计学意义(P0.05)。结论改良纤维板剥脱术治疗慢性结核性脓胸患者可有效改善肺功能,且未对围手术期临床指标及术后并发症产生明显影响,具有临床应用价值。     

单节段内固定术治疗胸腰椎骨折的手术方法与临床疗效分析

目的 研究单节段内固定术治疗胸腰椎骨折的手术方法与临床疗效.方法 将90例胸腰椎骨折患者按随机数字表法分为观察组（单节段内固定术）和对照组（双节段内固定术）,每组45例,比较两组手术情况、术后疼痛程度、矫正情况、伤椎相邻椎关节病变情况等.结果 观察组手术时间、出血量、切口长度、术后疼痛发生率、上节段和下节段间盘退变发生率明显少于对照组[（107.93±2.75） min比（132.68±2.81） min、（198.44±9.17）ml比（314.18±8.73）ml、（8.36±1.15）cm比（12.33±1.08） cm、8.89％（4/45）比26.67％（12/45）、6.67％（3/45）比22.22％（10/45）和4.44％（2/45）比20.00％（9/45）],差异有统计学意义（P＜0.01）.两组矫正情况比较差异无统计学意义（P＞0.05）.结论 在症状适宜的情况下,单节段内固定术治疗胸腰椎骨折效果突出,术后患者恢复状况好,术后并发症少,远期不良影响轻微,建议在临床中推广应用.     

Post-operative bracing after pedicle screw fixation for thoracolumbar burst fractures: A cost-effectiveness study

PurposeWhile frequently prescribed to patients following fixation for spine trauma, the utility of spinal orthoses during the post-operative period is poorly described in the literature. In this study, we calculated rates of reoperation and performed a decision analysis to determine the utility of bracing following pedicle screw fixation for thoracic and lumbar burst fractures.MethodsPubmed was searched for articles published between 2005 and 2015 for terms related to pedicle screw fixation of thoracolumbar fractures. Additionally, a database of neurosurgical patients operated on within the authors institution was also used in the analysis. Incidences of significant adverse events (wound revision for either dehiscence or infection or re-operation for non-union or instability due to hardware failure) were determined. Pooled means and variances of reported parameters were obtained using a random-effects, inverse variance meta-analytic model for observational data. Utilities for surgical outcome and complications were assigned using previously published values.ResultsOf the 225 abstracts reviewed, 48 articles were included in the study, yielding a total of 1957 patients. After including patients from the institutional registry, together a total of 2081 patients were included in the final analysis, 1328 of whom were braced. Non-braced patients were older then braced patients, although this only approached significance (p = 0.051). Braced patients had significantly lower rates of re-operation for non-union or clinically significant hardware failure (1.3% vs. 1.8%, p < 0.001) although the groups had comparable rates of operative wound dehiscence and infection (p = 1.000). These two approaches yielded comparable utility scores (p = 0.120). Costs between braced and non-braced patients were comparable excluding the cost of the brace (p = 0.256); hence, the added cost of the brace suggests that bracing post-operatively is not a cost effective measure.ConclusionsBracing following operative stabilization of thoracolumbar fracture does not significantly improve stability, nor does it increase wound complications. Moreover, our data suggests that post-operative bracing may not be a cost-effective measure.     

Outcome predictors of cirrhotic patients with spontaneous bacterial empyema

Background: Spontaneous bacterial empyema (SBE) is a complication of cirrhotic patients in which a pre‐existing pleural effusion becomes infected. This retrospective study was designed to investigate the bacteriology and outcome predictors of SBE in cirrhotic patients. Methods: Medical records of cirrhotic patients treated in a tertiary care university hospital from December 2004 to December 2008 were retrospectively reviewed. Results: Of 3390 cirrhotic patients seen during the study period, 81 cases of SBE were diagnosed. The incidence of SBE was 2.4% (81/3390) in cirrhotic patients and 16% (81/508) in patients with cirrhosis with hydrothorax. There were 46 monomicrobial infections found in 46 SBE patients. Aerobic Gram‐negative organisms were the predominant pathogens (n=29, 63%), and Escherichia coli (n=9, 20%) was the most frequently isolated sole pathogen. The mortality rate of SBE was 38% (31/81). Univariate analysis showed that Child–Pugh score, model for end‐stage liver disease (MELD)–Na score, concomitant bacteraemia, concomitant spontaneous bacterial peritonitis, initial intensive care unit (ICU) admission and initial antibiotic treatment failure were predictors of poor outcomes. Multivariate regression analysis demonstrated that the independent factors related to a poor outcome were initial ICU admission [odds ratio (OR): 4.318; 95% confidence interval 1CI) 1.09–17.03; P=0.037], MELD–Na score (OR: 1.267; 95% CI 1.08–1.49; P=0.004) and initial antibiotic treatment failure (OR: 13.10; 95% CI 2.60–66.03). Conclusion: Spontaneous bacterial empyema in cirrhotic patients is a high mortality complication. The independent factors related to poor outcome are high MELD–Na score, initial ICU admission and initial antibiotic treatment failure. High MELD–Na score may be a useful mortality predictor of SBE in cirrhotic patients.     

Routine spinal navigation for thoraco–lumbar pedicle screw insertion using the O-arm three-dimensional imaging system improves placement accuracy

Modern image-guided spinal navigation employs high-quality intra-operative three dimensional (3D) images to improve the accuracy of spinal surgery. This study aimed to assess the accuracy of thoraco-lumbar pedicle screw insertion using the O-arm (Breakaway Imaging, LLC, Littleton, MA, USA) 3D imaging system. Ninety-two patients underwent insertion of thoraco–lumbar pedicle screws guided by O-arm navigation over a 27 month period. Intra-operative scans were retrospectively reviewed for pedicle breach. The operative time of patients where O-arm navigation was used was compared to a matched control group where fluoroscopy was used. A total of 467 pedicle screws were inserted. Four hundred and forty-five screws (95.3%) were placed within the pedicle without any breach (Gertzbein classification grade 0). Sixteen screws (3.4%) had a pedicle breach of less than 2 mm (Gertzbein classification grade 1), and six screws (1.3%) had a pedicle breach between 2 mm and 4 mm (Gertzbein classification grade 2). The grade 2 screws were revised intra-operatively. There was no incidence of neurovascular injury in this series of patients. The mean operative time for O-arm patients was 5.25 hours. In a matched control group of fluoroscopy patients, the mean operative time was 4.75 hours. The difference in the mean operative time between the two groups was not statistically significant (p = 0.15, paired t-test). Stereotactic navigation based on intra-operative O-arm 3D imaging resulted in high accuracy in thoraco–lumbar pedicle screw insertion.