Socio-demographic and trauma-related predictors of depression within eight weeks of motor vehicle collision in the AURORA study.

BACKGROUND: This is the first report on the association between trauma exposure and depression from the Advancing Understanding of RecOvery afteR traumA(AURORA) multisite longitudinal study of adverse post-traumatic neuropsychiatric sequelae (APNS) among participants seeking emergency department (ED) treatment in the aftermath of a traumatic life experience. METHODS: We focus on participants presenting at EDs after a motor vehicle collision (MVC), which characterizes most AURORA participants, and examine associations of participant socio-demographics and MVC characteristics with 8-week depression as mediated through peritraumatic symptoms and 2-week depression. RESULTS: Eight-week depression prevalence was relatively high (27.8%) and associated with several MVC characteristics (being passenger v. driver; injuries to other people). Peritraumatic distress was associated with 2-week but not 8-week depression. Most of these associations held when controlling for peritraumatic symptoms and, to a lesser degree, depressive symptoms at 2-weeks post-trauma. CONCLUSIONS: These observations, coupled with substantial variation in the relative strength of the mediating pathways across predictors, raises the possibility of diverse and potentially complex underlying biological and psychological processes that remain to be elucidated in more in-depth analyses of the rich and evolving AURORA database to find new targets for intervention and new tools for risk-based stratification following trauma exposure.

Neurocognition after motor vehicle collision and adverse post-traumatic neuropsychiatric sequelae within 8 weeks: Initial findings from the AURORA study.

BACKGROUND: Previous work has indicated that differences in neurocognitive functioning may predict the development of adverse post-traumatic neuropsychiatric sequelae (APNS). Such differences may be vulnerability factors or simply correlates of APNS-related symptoms. Longitudinal studies that measure neurocognitive functioning at the time of trauma are needed to determine whether such differences precede the development of APNS. METHODS: Here, we present findings from a subsample of 666 ambulatory patients from the AURORA (Advancing Understanding of RecOvery afteR trumA) study. All patients presented to EDs after a motor vehicle collision (MVC). We examined associations of neurocognitive test performance shortly after MVC with peritraumatic symptoms in the ED and APNS (depression, post-traumatic stress, post-concussive symptoms, and pain) 2 weeks and 8 weeks later. Neurocognitive tests assessed processing speed, attention, verbal reasoning, memory, and social perception. RESULTS: Distress in the ED was associated with poorer processing speed and short-term memory. Poorer short-term memory was also associated with depression at 2 weeks post-MVC, even after controlling for peritraumatic distress. Finally, higher vocabulary scores were associated with pain 2 weeks post-MVC. LIMITATIONS: Self-selection biases among those who present to the ED and enroll in the study limit generalizability. Also, it is not clear whether observed neurocognitive differences predate MVC exposure or arise in the immediate aftermath of MVC exposure. CONCLUSIONS: Our results suggest that processing speed and short-term memory may be useful predictors of trauma-related characteristics and the development of some APNS, making such measures clinically-relevant for identifying at-risk individuals.

Prognostic neuroimaging biomarkers of trauma-related psychopathology: resting-state fMRI shortly after trauma predicts future PTSD and depression symptoms in the AURORA study.

Neurobiological markers of future susceptibility to posttraumatic stress disorder (PTSD) may facilitate identification of vulnerable individuals in the early aftermath of trauma. Variability in resting-state networks (RSNs), patterns of intrinsic functional connectivity across the brain, has previously been linked to PTSD, and may thus be informative of PTSD susceptibility. The present data are part of an initial analysis from the AURORA study, a longitudinal, multisite study of adverse neuropsychiatric sequalae. Magnetic resonance imaging (MRI) data from 109 recently (i.e., ~2 weeks) traumatized individuals were collected and PTSD and depression symptoms were assessed at 3 months post trauma. We assessed commonly reported RSNs including the default mode network (DMN), central executive network (CEN), and salience network (SN). We also identified a proposed arousal network (AN) composed of a priori brain regions important for PTSD: the amygdala, hippocampus, mamillary bodies, midbrain, and pons. Primary analyses assessed whether variability in functional connectivity at the 2-week imaging timepoint predicted 3-month PTSD symptom severity. Left dorsolateral prefrontal cortex (DLPFC) to AN connectivity at 2 weeks post trauma was negatively related to 3-month PTSD symptoms. Further, right inferior temporal gyrus (ITG) to DMN connectivity was positively related to 3-month PTSD symptoms. Both DLPFC-AN and ITG-DMN connectivity also predicted depression symptoms at 3 months. Our results suggest that, following trauma exposure, acutely assessed variability in RSN connectivity was associated with PTSD symptom severity approximately two and a half months later. However, these patterns may reflect general susceptibility to posttraumatic dysfunction as the imaging patterns were not linked to specific disorder symptoms, at least in the subacute/early chronic phase. The present data suggest that assessment of RSNs in the early aftermath of trauma may be informative of susceptibility to posttraumatic dysfunction, with future work needed to understand neural markers of long-term (e.g., 12 months post trauma) dysfunction. Furthermore, these findings are consistent with neural models suggesting that decreased top-down cortico-limbic regulation and increased network-mediated fear generalization may contribute to ongoing dysfunction in the aftermath of trauma.

Classification and Prediction of Post-Trauma Outcomes Related to PTSD Using Circadian Rhythm Changes Measured via Wrist-Worn Research Watch in a Large Longitudinal Cohort.

Post-Traumatic Stress Disorder (PTSD) is a psychiatric condition resulting from threatening or horrifying events. We hypothesized that circadian rhythm changes, measured by a wrist-worn research watch are predictive of post-trauma outcomes. APPROACH: 1618 post-trauma patients were enrolled after admission to emergency departments (ED). Three standardized questionnaires were administered at week eight to measure post-trauma outcomes related to PTSD, sleep disturbance, and pain interference with daily life. Pulse activity and movement data were captured from a research watch for eight weeks. Standard and novel movement and cardiovascular metrics that reflect circadian rhythms were derived using this data. These features were used to train different classifiers to predict the three outcomes derived from week-eight surveys. Clinical surveys administered at ED were also used as features in the baseline models. RESULTS: The highest cross-validated performance of research watch-based features was achieved for classifying participants with pain interference by a logistic regression model, with an area under the receiver operating characteristic curve (AUC) of 0.70. The ED survey-based model achieved an AUC of 0.77, and the fusion of research watch and ED survey metrics improved the AUC to 0.79. SIGNIFICANCE: This work represents the first attempt to predict and classify post-trauma symptoms from passive wearable data using machine learning approaches that leverage the circadian desynchrony in a potential PTSD population.

Socio-demographic and trauma-related predictors of PTSD within 8 weeks of a motor vehicle collision in the AURORA study.

This is the initial report of results from the AURORA multisite longitudinal study of adverse post-traumatic neuropsychiatric sequelae (APNS) among participants seeking emergency department (ED) treatment in the aftermath of a traumatic life experience. We focus on n = 666 participants presenting to EDs following a motor vehicle collision (MVC) and examine associations of participant socio-demographic and participant-reported MVC characteristics with 8-week posttraumatic stress disorder (PTSD) adjusting for pre-MVC PTSD and mediated by peritraumatic symptoms and 2-week acute stress disorder (ASD). Peritraumatic Symptoms, ASD, and PTSD were assessed with self-report scales. Eight-week PTSD prevalence was relatively high (42.0%) and positively associated with participant sex (female), low socioeconomic status (education and income), and several self-report indicators of MVC severity. Most of these associations were entirely mediated by peritraumatic symptoms and, to a lesser degree, ASD, suggesting that the first 2 weeks after trauma may be a uniquely important time period for intervening to prevent and reduce risk of PTSD. This observation, coupled with substantial variation in the relative strength of mediating pathways across predictors, raises the possibility of diverse and potentially complex underlying biological and psychological processes that remain to be elucidated with more in-depth analyses of the rich and evolving AURORA data.

Prior sleep problems and adverse post-traumatic neuropsychiatric sequelae of motor vehicle collision in the AURORA study.

STUDY OBJECTIVES: Many patients in Emergency Departments (EDs) after motor vehicle collisions (MVCs) develop post-traumatic stress disorder (PTSD) or major depressive episode (MDE). This report from the AURORA study focuses on associations of pre-MVC sleep problems with these outcomes 8 weeks after MVC mediated through peritraumatic distress and dissociation and 2-week outcomes. METHODS: A total of 666 AURORA patients completed self-report assessments in the ED and at 2 and 8 weeks after MVC. Peritraumatic distress, peritraumatic dissociation, and pre-MVC sleep characteristics (insomnia, nightmares, daytime sleepiness, and sleep duration in the 30 days before the MVC, trait sleep stress reactivity) were assessed retrospectively in the ED. The survey assessed acute stress disorder (ASD) and MDE at 2 weeks and at 8 weeks assessed PTSD and MDE (past 30 days). Control variables included demographics, MVC characteristics, and retrospective reports about PTSD and MDE in the 30 days before the MVC. RESULTS: Prevalence estimates were 41.0% for 2-week ASD, 42.0% for 8-week PTSD, 30.5% for 2-week MDE, and 27.2% for 8-week MDE. Pre-MVC nightmares and sleep stress reactivity predicted 8-week PTSD (mediated through 2-week ASD) and MDE (mediated through the transition between 2-week and 8-week MDE). Pre-MVC insomnia predicted 8-week PTSD (mediated through 2-week ASD). Estimates of population attributable risk suggest that blocking effects of sleep disturbance might reduce prevalence of 8-week PTSD and MDE by as much as one-third. CONCLUSIONS: Targeting disturbed sleep in the immediate aftermath of MVC might be one effective way of reducing MVC-related PTSD and MDE.

A Patient's Journey With Rare Biphenotypic Hepatocellular Carcinoma and Cholangiocarcinoma.

Combined hepatocellular-cholangiocarcinoma (cHCC-CC) is a rare neoplastic primary liver cancer that is also known as mixed HCC-CC since it portrays characteristics of both hepatocellular carcinoma (HCC) and cholangiocarcinoma (CC). It constitutes less than 5% of primary liver cancers, hence, the literature lacks guidance on the management of these patients. A handful of case series has been published on clinical features and surgical outcomes. There is next-to-no mention of how to treat these patients. However, surgery has proven the most definitive treatment with varied responses to systemic therapies. We present a case of cHCC-CC in a patient who has undergone multiple treatment modalities, including surgical resection, chemotherapy, immunotherapy, and targeted therapy.

Effectiveness of a multi-session combined near-peer and faculty-led surgical skills course on self-perceived ability to perform basic surgical skills.

BACKGROUND: Newly qualified UK doctors report feeling unprepared to perform basic practical procedures. The Royal College of Surgeons of England (RCSEng) responded to this concern by developing a national surgical curriculum, however, a national survey of UK medical schools identified that surgical skills teaching is inconsistent throughout the UK.Peer assisted teaching sessions are delivered by senior students to junior peers and have been demonstrated to be effective in a number of settings. We aimed to develop a peer-led surgical skills course for medical students and assess its efficacy in teaching surgical skills. METHODS: Combined near-peer and faculty-led teaching sessions were delivered to medical students (N = 14). We assessed for confidence in these skills using pre- and post-course Likert scale questionnaires to determine self-perceived benefit. RESULTS: Overall, student confidence in all skills improved by +1.254 (p < 0.0001). Individually, confidence in every skill increased significantly, including continuous suturing, knot tying and excision and closure, which improved by +1.45 (p < 0.001), +1.22 (p < 0.05) and +1.59 (p < 0.0001), respectively. DISCUSSION: This study demonstrates that teaching provided through near-peer faculty improves medical student confidence in basic surgical skills. A similar course design could be implemented in other UK medical schools to improve the surgical skills of newly graduated doctors.

Access to internet, smartphone usage, and acceptability of mobile health technology among cancer patients.

PURPOSE: The use of mobile health (mHealth) technologies to augment patient care enables providers to communicate remotely with patients enhancing the quality of care and patient engagement. Few studies evaluated predictive factors of its acceptance and subsequent implementation, especially in medically underserved populations. METHODS: A cross-sectional study of 151 cancer patients was conducted at an academic medical center in the USA. A trained interviewer performed structured interviews regarding the barriers and facilitators of patients' current and desired use of mHealth technology for healthcare services. RESULTS: Of the 151 participants, 35.8% were male and ages ranged from 21 to 104 years. 73.5% of participants currently have daily access to internet, and 68.2% currently own a smartphone capable of displaying mobile applications. Among all participants, acceptability of a daily mHealth application was significantly higher in patients with a college-level degree (OR 2.78, CI95% 1.25-5.88) and lower in patients > 80 years of age (OR 0.05, CI95% 0.01-0.23). Differences in acceptability when adjusted for current smartphone use and daily access to internet were nonsignificant. Among smartphone users, the desire to increase cancer knowledge was associated with a higher likelihood of utilizing a mHealth application (OR 261.53, CI95% 10.13-6748.71). CONCLUSION: The study suggests that factors such as age, educational achievement, and access to internet are significant predictors of acceptability of a mHealth application among cancer patients. Healthcare organizations should consider these factors when launching patient engagement platforms.

The AURORA Study: a longitudinal, multimodal library of brain biology and function after traumatic stress exposure.

Adverse posttraumatic neuropsychiatric sequelae (APNS) are common among civilian trauma survivors and military veterans. These APNS, as traditionally classified, include posttraumatic stress, postconcussion syndrome, depression, and regional or widespread pain. Traditional classifications have come to hamper scientific progress because they artificially fragment APNS into siloed, syndromic diagnoses unmoored to discrete components of brain functioning and studied in isolation. These limitations in classification and ontology slow the discovery of pathophysiologic mechanisms, biobehavioral markers, risk prediction tools, and preventive/treatment interventions. Progress in overcoming these limitations has been challenging because such progress would require studies that both evaluate a broad spectrum of posttraumatic sequelae (to overcome fragmentation) and also perform in-depth biobehavioral evaluation (to index sequelae to domains of brain function). This article summarizes the methods of the Advancing Understanding of RecOvery afteR traumA (AURORA) Study. AURORA conducts a large-scale (n = 5000 target sample) in-depth assessment of APNS development using a state-of-the-art battery of self-report, neurocognitive, physiologic, digital phenotyping, psychophysical, neuroimaging, and genomic assessments, beginning in the early aftermath of trauma and continuing for 1 year. The goals of AURORA are to achieve improved phenotypes, prediction tools, and understanding of molecular mechanisms to inform the future development and testing of preventive and treatment interventions.

Predicting Technical Success after Fistuloplasty: An Analysis of 176 Procedures.

BACKGROUND: Significant stenoses in arteriovenous fistulae (AVFs) or arteriovenous grafts (AVGs) with limitation of flow and dialysis inadequacy should prompt consideration for fistuloplasty. We sought to identify fistulae, lesions, and patient-specific variables, which predict for outcomes after fistuloplasty. METHODS: Data were extracted retrospectively from a renal access database from 2011 to 2016 of patients undergoing fistuloplasty. Demographics, comorbidities, outcomes of intervention, and flow rates documented on preintervention and postintervention duplex were collected. Secondary analysis of factors associated with postfistuloplasty flow rates of >600 mL/min, previously shown to be predictive of not requiring future intervention, was performed. RESULTS: Of 204 attempted fistuloplasties, 176 were completed. One hundred forty (79.5%) were native AVFs and 34 (19.3%), AVGs (no data for 2). Median stenosis treated was 75%, with a majority (43.8%) in the proximal outflow vein. Flow rate on duplex after fistuloplasty was significantly better in AVFs (mean improvement 189.2 mL/min) than that in AVGs (mean improvement 51.8 mL/min; P = 0.034). Greatest flow improvement occurred for needling site stenotic lesions compared with other locations (from anastomosis to central vein) but was not significant. Brachio-brachial or brachio-axillary AVGs did significantly (P < 0.05) worse than all other fistulae types. The presence of hypertension was predicted for postfistuloplasty flow rate of >600 mL/min. CONCLUSIONS: Flow rates after fistuloplasty vary depending on the type of fistula treated and the presence of hypertension. Knowledge of this can lead to better patient selection and counseling for fistuloplasty.

Acute Vs. Elective Paraesophageal Hernia Repair: Endoscopic Gastric Decompression Allows Semi-Elective Surgery in a Majority of Acute Patients.

BACKGROUND: Historically, patients presenting acutely with paraesophageal hernia and requiring urgent operation demonstrated inferior outcomes compared to patients undergoing elective repair. METHODS: A prospective IRB-approved database was used to retrospectively review 570 consecutive patients undergoing paraesophageal hernia repair between 2000 and 2016. RESULTS: Thirty-eight patients presented acutely (6.7%) and 532 electively. Acute presentation was associated with increased age (74 vs. 69 years) but similar age-adjusted Charlson comorbidity scores. A history of chest pain, intrathoracic stomach ≥75%, and mesoaxial rotation were more common in acute presentations. Emergency surgery was required in three patients (8%), and 35 patients were managed in a staged approach with guided decompression prior to semi-elective surgery. Acute presentation was associated with an increased hospital stay (5 (2-13) days vs. 4 (1-27) days, p = 0.001). There was no difference in postoperative Clavien-Dindo severity scores. One patient in the elective group died, and the overall mortality was 0.2%. CONCLUSION: Our findings suggest that a majority of patients presenting with acute paraesophageal hernia can undergo a staged approach instead of urgent surgery with comparable outcomes to elective operations in high-volume centers. We suggest elective repair for patients presenting with a history of chest pain, intrathoracic stomach ≥75%, and a mesoaxial rotation.

The Importance of Age on Short-Term Outcomes Associated With Repair of Giant Paraesophageal Hernias.

BACKGROUND: Older patients have an increased incidence of paraesophageal hernia (PEH) and can be denied surgical assessment due to the perception of increased complications and mortality. This study examines the influence of age and comorbidities on early complications and other short-term outcomes of PEH repair. METHODS: From 2000 to 2016, data of surgically treated patients with PEH were prospectively recorded in an Institutional Review Board-approved database. Only patients whose hernia involved over 50% of the stomach were included. Patients were stratified by age (<70, 70 to 79, ≥80 years of age) and compared in univariate and multivariate analyses. RESULTS: Overall, 524 patients underwent surgical PEH repair (<70: 261 [50%]; 70 to 79: 163 [31%]; ≥80: 100 [19%]). Patients greater than or equal to 80 years of age had higher American Society of Anesthesiologists class, more comorbidities, larger hernias, and higher incidences of type IV PEH and acute presentation. Patients greater than or equal to 80 years of age had more postoperative complications, but not higher grade complications (Clavien-Dindo grade ≥IIIa). Median length of stay was 1 day longer for patients greater than or equal to 80 years of age (5 days versus 4 days for patients <70 and 70 to 79 years of age, respectively). Objective, radiologic hernia recurrence at 4.3 months postoperation was 17.3% and was not increased in the greater than or equal to 80 years of age group. After adjustment for comorbidities and other factors, age greater than or equal to 80 years was not a significant factor in predicting severe complications, readmission within 30 days, or early recurrence. CONCLUSIONS: PEH repair is safe in physiologically stable patients, irrespective of age. Incidence of complications is higher in older patients, but complication severity and mortality are similar to those of younger patients. Patients with giant PEH should be given the opportunity to review treatments options with an experienced surgeon.

Outcomes of Surgical Resection of T1bN0 Esophageal Cancer and Assessment of Endoscopic Mucosal Resection for Identifying Low-Risk Cancers Appropriate for Endoscopic Therapy.

BACKGROUND: Invasive esophageal cancers have been managed historically with esophagectomy. Low-risk T1b patients are being proposed for nonsurgical management. The purpose of this study was to evaluate the ability of endoscopic mucosal resections (EMR) to identify low-risk T1b patients and to review surgical treatment outcomes for T1b cancer. METHODS: All esophageal cancer patients, in an institutional review board-approved prospective database, between 2000 and 2013 with clinical stage (cT1bN0), pathological stage (pT1bN0), and no neoadjuvant therapy were retrospectively reviewed. RESULTS: Fifty-one patients, 38 pT1b and 13 cT1b, were assessed. All cT1b had preoperative EMR and five were found to be understaged at esophagectomy. pT1bN0 patients had a mean age of 66 years, mean BMI of 30, and 95 % had adenocarcinoma. Thirty-eight pT1bN0 patients underwent esophagectomy with a median hospital length of stay (LOS) of 9 days. Complications occurred in 14 patients, but 71 % were minor (Accordion score 1-2). In-hospital 30- and 90-day mortality was zero. EMR specimens were re-reviewed to assess low-risk criteria. Degree of differentiation and the presence of lymphovascular invasion could be assessed in all EMR specimens; however, assessment of submucosal invasion limited to the superficial submucosal layer could not be determined in the majority of cases. Kaplan-Meier 5-year overall survival in pT1bN0 patients was 78.7 %. CONCLUSIONS: Clinical staging of superficial esophageal cancer can be inaccurate especially in submucosal tumors. EMR should be routinely used for preoperative staging. Healthy patients with clinical tumor stage greater than cT1a should undergo multidisciplinary review and be considered for surgical resection.

Multidisciplinary treatment of T1a adenocarcinoma in Barrett's esophagus: contemporary comparison of endoscopic and surgical treatment in physiologically fit patients.

BACKGROUND: Previous reports comparing endoscopic therapy (ET) and surgical therapy (ST) have predominantly assessed patients with high-grade dysplasia. The study aim was to compare ET to ST in physiologically fit patients with cT1a adenocarcinoma (EAC). METHODS: Review of two prospective databases yielded 100 patients presenting with clinical cT1a EAC between 2000 and 2013. Only physiologically fit patients who were candidates for either treatment were analyzed. RESULTS: Presenting patient characteristics were similar between ET (n = 36) and ST groups (n = 49). Surgical patients were less likely to be staged with EMR (43 vs 100 %) and were associated with mass lesions >1 cm at EGD (p = 0.01), multifocal EAC (p = 0.03), and positive margins for EAC on EMR (p < 0.05). On multivariate analysis, only multifocal HGD was an independent factor for surgery. Following esophagectomy, R0 resection rates for Barrett's esophagus and cancer were 100 %. Incidence of surgery decreased over the study period from 85 to 25 %. All ET patients had EMR, and 28 patients underwent additional ablative therapies for Barrett's esophagus. Following ET, eradication rates of EAC, dysplasia, and BE were 92, 81, and 53 %, respectively. Morbidity rates were comparable between groups (ST 51 % vs ET 39 %, p = 0.31). In-hospital mortality rate was zero in each group. Recurrence rates in ST and ET group were 2 and 11 % (p = 0.08). In the ET group, two patients with endoluminal cancer recurrence after complete eradication underwent esophagectomy. Age-adjusted overall survival was comparable. CONCLUSION: In high-volume esophageal centers, ST and ET provide equally safe and effective treatment for cT1a EAC in medically fit patients. While the results of this study provide a historical perspective and clearly demonstrate an evolution toward ET over time, the appropriate treatment modality is best selected in a multidisciplinary fashion with EMR providing the most accurate staging. In endoscopically treated patients, indefinite endoscopic follow-up required, however, standardized long-term follow-up protocols are needed.

Functional Conduit Disorder Complicating Esophagectomy.

Esophagectomy remains a key component of treatment for esophageal cancer and is also required in certain benign conditions. The functional sequelae of esophageal resection and reconstruction have taken on increasing importance due to the impact on long-term patient quality of life. Surgeons should be committed to a meticulous approach to conduit construction, avoid anastomoses in the mid and lower chest, and should also commit to careful long-term functional follow-up in their postesophagectomy patient population. Operative strategies to minimize functional disorders have been developed and all surgeons should have a structured approach to dealing with functional issues when they occur.

Relationship between margin distance and local recurrence among patients undergoing wedge resection for small (≤2 cm) non-small cell lung cancer.

OBJECTIVE: Successful pulmonary wedge resection for early-stage non-small cell lung cancer requires a pathologically confirmed negative margin. To date, however, no clear evidence is available regarding whether an optimal margin distance, defined as the distance from the primary tumor to the closest resection margin, exists. Toward addressing this gap, we investigated the relationship between the margin distance and local recurrence risk. METHODS: We reviewed all adult patients who had undergone wedge resection for small (≤2 cm) non-small cell lung cancer from January 2001 to August 2011, with follow-up through to December 31, 2011. The exclusion criteria included other active noncutaneous malignancies, bronchoalveolar carcinomas, lymph node or distant metastases at diagnosis, large cell cancer, adenosquamous cancer, multiple, multifocal, and/or metastatic disease, and previous chemotherapy or radiotherapy. Using Cox regression analysis, we examined the relationship between the margin distance and interval to local recurrence, adjusting for chronic obstructive pulmonary disease, forced expiratory volume in 1 second, smoking, diabetes, tumor size, tumor location, surgeon, open versus video-assisted thoracoscopic surgery, and whether the lymph nodes were sampled. RESULTS: Of 557 consecutive adult patients, 479 met our inclusion criteria. The overall, unadjusted 1- and 2-year local recurrences rate was 5.7% and 11.0%, respectively. From the adjusted analyses, an increased margin distance was significantly associated with a lower risk of local recurrence (P = .033). Patients with a 10-mm margin distance had a 45% lower local recurrence risk than those with a 5-mm distance (hazard ratio, 0.55; 95% confidence interval, 0.35-0.86). Beyond 15 mm, no evidence of additional benefit was associated with an increased margin distance. CONCLUSIONS: In wedge resection for small non-small cell lung cancer, increasing the margin distance ≤15 mm significantly decreased the local recurrence risk, with no evidence of additional benefit beyond 15 mm.

Brachial artery aneurysms following brachio-cephalic AV fistula ligation.

PURPOSE: Peripheral artery aneurysms proximal to a long-standing arteriovenous (AV) fistula can be a serious complication. It is important to be aware of this and manage it appropriately. METHODS: Vascular access nurses input all data regarding patients undergoing dialysis access procedures into a securely held database prospectively. This was retrospectively reviewed to identify cases of brachial artery aneurysms over the last 3 years. RESULTS: In Morriston Hospital, around 200 forearm and arm AV fistulas are performed annually for vascular access in renal dialysis patients. Of these, approximately 15 (7.5%) are ligated. Three patients who had developed brachial artery aneurysms following AV fistula ligation were identified. All 3 patients had developed brachial artery aneurysms following ligation of a long-standing brachio-cephalic AV fistula. Two patients presented with pain and a pulsatile mass in the arm, and one presented with pins and needles and discoloration of fingertips. Two were managed with resection of the aneurysm and reconstruction with a reversed long saphenous vein interposition graft, the third simply required ligation of a feeding arterial branch. CONCLUSIONS: True aneurysm formation proximal to an AV fistula that has been ligated is a rare complication. There are several reasons for why these aneurysms develop in such patients, the most plausible one being the increase in blood flow and resistance following ligation of the AV fistula. Of note, all the patients in this study were on immunosuppressive therapy following successful renal transplantation. Vigilance by the vascular access team and nephrologists is paramount to identify those patients who may warrant further evaluation and investigation by the vascular surgeon.

Maximizing the benefit of minimally invasive surgery.

Minimal invasive surgery is an excellent approach for the diagnosis and treatment of a wide range of thoracic disorders that previously required sternotomy or open thoracotomy. The notable benefits of minimal invasive surgery to patients include less postoperative pain, fewer operative and post-operative major complications, shortened hospital stay, faster recovery times, less scarring, less stress on the immune system, smaller incision, and for some procedures reduced operating time and reduced costs.