Do orbital floor plates adequately protect against serious secondary injury?

Reconstruction of the orbital floor is common in cases of trauma and a variety of alloplastic materials, including titanium, can be used. However, we know of no reports about what happens to these materials if there is a second injury to the surgical site. This pilot study on six human cadavers (12 orbits) was therefore designed to investigate the possible outcomes should this occur. A “blowout fracture” was created in each orbit, which was then repaired using a preformed titanium implant. In two orbits, two implants were placed without fixation. The remaining implants were secured to the anterior orbital floor with a single screw, which was placed laterally or medially. A second impact sufficient to fracture the zygomaticomaxillary complex was then applied and its effect on the implants noted.     

急性脑膨出预防模式在幕上重型颅脑外伤治疗中的应用及脑膨出危险因素分析

目的探讨急性脑膨出预防模式在幕上重型颅脑外伤（sTBI）大骨瓣减压术中的应用及脑膨出危险因素。 方法选取郴州市第一人民医院神经外科自2016年5月至2018年5月收治的行大骨瓣减压术治疗幕上sTBI的患者130例，根据随机数字表法分成对照组（65例）、观察组（65例）。对照组仅进行常规术前准备，观察组采用急性脑膨出预防模式。比较2组患者急性脑膨出发生率，术后随访6个月，利用GOS评分评价患者的预后。采用单因素与Logistic多因素分析急性脑膨出的危险因素。 结果观察组急性脑膨出发生率（9.23%）低于对照组（23.08%），差异有统计学意义（P<0.05）。观察组预后良好率（75.38%）显著高于对照组（56.92%），差异有统计学意义（P<0.05）。Logistic回归模型提示GCS评分（3~5分）、无急性脑膨出预防模式、迟发型出血、弥漫性脑肿胀、脑挫伤是急性脑膨出的危险因素（P<0.05）。采用急性脑膨出预防模式是预防急性脑膨出的保护性因素（P<0.05）。 结论急性脑膨出预防模式的应用能降低幕上sTBI患者急性脑膨出发生率，可提高预后良好率，且急性脑膨出的发生与GCS评分（3~5分）、无急性脑膨出预防模式、迟发型出血、弥漫性脑肿胀、脑挫伤有关。     

Simulation-based training for trauma resuscitation among ACS TQIP-Pediatric centers: Understanding prevalence of use,associated center characteristics,training factors,and implementation barriers

Background

Simulation-based training (SBT) for pediatric trauma resuscitation can improve team performance. The purpose of this study was to describe the nationwide trend in SBT use and barriers to SBT implementation.

Older polytrauma: Mortality and complications

IntroductionOlder adults enduring a polytrauma have an increased mortality risk. Apart from age, the role of other predisposing factors on mortality are mainly described for the total polytrauma population. This study aimed to describe the mortality pattern of older polytrauma patients, its associated risk factors, and the role and etiology of in-hospital complications.MethodsAn eight-year retrospective cohort was constructed from 380 polytrauma patients aged ≥65 in a Dutch level 1 trauma center and linked to the national trauma database (DTR). Demographics, injury characteristics, comorbidity, clinical characteristics, in-hospital mortality, mortality etiology and complications scored according to the Clavien-Dindo classification were analyzed. Primary outcome was the identification of risk factors associated with in-hospital mortality, followed by identification of in-hospital complications and their nature.ResultsOverall in-hospital mortality was 36.3%, rising significantly with age. For patients aged ≥85 in-hospital mortality was 60.8%. Polytrauma patients aged ≥75 showed a peak of late-onset deaths one week following trauma. Age, a Glasgow coma score ≤8, coagulopathy, acidosis, injury severity score and the presence of a large subdural hematoma were significant risk factors influencing in-hospital mortality. Respiratory failure was the most prevalent severe and fatal complication. The proportion of fatal complications grew significantly with age (p < 0.01).ConclusionsAge is strongly associated with in-hospital mortality in polytraumatized elderly. Coagulopathy, acidosis, a low Glasgow coma score, presence of a large subdural hematoma and injury severity score were independently of age associated with an increased mortality. Patients older than 75 years showed a unique trimodal distribution of mortality with a late onset one week following the initial trauma. Elderly were more susceptible for fatal complications. Respiratory failure was the most prevalent severe and fatal complication. Aggressive monitoring and treatment of the pulmonary status is therefore of utmost importance.     

Childhood trauma affects processing of social interactions in borderline personality disorder: An event-related potential study investigating empathy for pain

Objectives: Patients with borderline personality disorder (BPD) have difficulties in empathising with others and show disturbances in social interactions. Using a ‘Social Interaction Empathy Task’, we found that BPD patients judged neutral and psychologically painful conditions as more painful than healthy subjects. Here, we present the neural correlates underlying these differences in empathy for pain.

Methods: Female BPD patients and healthy controls completed the ‘Social Interaction Empathy Task’ during EEG recording. Event-related potentials (ERP) were analysed for an early anterior component and a late latency positivity. Empathic abilities were assessed using the Interpersonal Reactivity Index and early aversive experiences were measured by the Childhood Trauma Questionnaire (CTQ).

Results: ERPs in the patient group matched the behaviour results and correlated with the level of personal distress and CTQ. In addition, ERPs of patients were predicted by childhood maltreatment and stress.

Conclusions: Taken together, our findings indicate that the observed behavioural differences between patients with BPD and controls might be due to modulatory effects of empathic abilities on the evaluation of pain-related social stimuli, which are supposed to be based on childhood maltreatment.     

微创穿刺抽吸术与开颅手术治疗脑出血的疗效

目的探讨微创穿刺抽吸术与开颅手术治疗脑出血的疗效。方法选择2017年1月-2018年1月治疗的脑出血患者80例作为对象,根据住院时间先后顺序随机数字表分为对照组(n=40)和观察组(n=40)。观察组给予患者微创穿刺抽吸术治疗,对照组给予患者开颅手术治疗,比较两组患者术后总治愈效率和手术开展时间、住院天数。结果观察组手术开展时间、住院天数短于对照组(P<0.05);观察组的总治愈效率为90%高于对照组75%(P<0.05);观察组患者术后意识恢复时间短于对照组(P<0.05)观察组患者术后肢体障碍及肺部感染、伤口感染发生率均略低于对照组,但差异不具有统计学意义(P>0.05)。结论微创穿刺抽吸术在脑出血临床治疗中比开颅手术总治愈率高、安全性高、恢复快。     

Early life Adversity,functional connectivity and cognitive performance in Schizophrenia: The mediating role of IL-6

ObjectiveExposure to childhood trauma (CT) is associated with cognitive impairment in schizophrenia, and deficits in social cognition in particular. Here, we sought to test whether IL-6 mediated the association between CT and social cognition both directly, and sequentially via altered default mode network (DMN) connectivity.MethodsThree-hundred-and-eleven participants (104 patients and 207 healthy participants) were included, with MRI data acquired in a subset of n = 147. CT was measured using the childhood trauma questionnaire (CTQ). IL-6 was measured in both plasma and in toll like receptor (TLR) stimulated whole blood. The CANTAB emotion recognition task (ERT) was administered to assess social cognition, and cortical connectivity was assessed based on resting DMN connectivity.ResultsHigher IL-6 levels, measured both in plasma and in toll-like receptor (TLR-2) stimulated blood, were significantly correlated with higher CTQ scores and lower cognitive and social cognitive function. Plasma IL-6 was further observed to partly mediate the association between higher CT scores and lower emotion recognition performance (CTQ total: β_indirect −0.0234, 95% CI: −0.0573 to −0.0074; CTQ physical neglect: β_indirect = −0.0316, 95% CI: −0.0741 to −0.0049). Finally, sequential mediation was observed between plasma IL-6 levels and DMN connectivity in mediating the effects of higher CTQ on lower social cognitive function (β_indirect = −0.0618, 95% CI: −0.1523 to −0.285).ConclusionThis work suggests that previous associations between CT and social cognition may be partly mediated via an increased inflammatory response. IL-6′s association with changes in DMN activity further suggest at least one cortical network via which CT related effects on cognition may be transmitted.