BACKGROUND & AIMS: Visual optics is taking on new clinical significance. Given that current refractive procedures can and do induce large amounts of higher order ocular aberration that often affects the patient's daily visual function and quality of life, we can no longer relegate the considerations of ocular aberrations to academic discussions. Instead, we need to move toward minimizing (not increasing) the eye's aberrations at the same time we are correcting the eye's spherical and cylindrical refractive error. These are exciting times in refractive surgery, which need to be tempered by the fact that after all the research, clinical, and marketing dust settles, the level to which we improve the quality of the retinal image will be guided by the trade-off between cost and the improvement in the quality of life that refractive surgery offers.

背景与目标： 视觉光学具有新的临床意义。鉴于当前的屈光手术可以并且确实会引起大量的高阶眼像差，这些像差通常会影响患者的日常视觉功能和生活质量，因此我们不能再将眼像差的考虑因素置于学术讨论中。相反，我们需要在校正眼睛的球形和圆柱形屈光不正的同时，朝着最小化 (不增加) 眼睛的像差的方向发展。在屈光手术中，这是激动人心的时刻，需要通过以下事实来缓解: 在所有研究，临床和营销尘埃落定之后，我们提高视网膜图像质量的水平将取决于成本与屈光手术提供的生活质量之间的权衡。

BACKGROUND & AIMS: OBJECTIVE:To assess the prevalence of night eating syndrome (NES) and binge eating disorder (BED) and their related behavioral and psychological correlates in persons who sought bariatric surgery. RESEARCH METHODS AND PROCEDURES:A consecutive series of 215 persons with extreme obesity (82% women, 70% European American) completed the Weight and Lifestyle Inventory and a semistructured interview as part of a pre-surgery behavioral/psychological assessment. Diagnoses for NES and BED were based on graded diagnostic criteria. RESULTS:Percentages of participants who met diagnostic criteria for NES by interview were 1.9% for the strictest definition and 8.9% across all definitions of NES. After interview, full DSM-TR criteria for BED were met by 4.2%; an additional 1.4% reported binge eating at least once per week. Self-reported prevalence of NES and BED were higher. Those with NES or BED had significantly more symptoms of depression and a greater history of psychological complications than the remaining sample. DISCUSSION:The prevalence rates of NES and BED among this population of bariatric surgery candidates were lower than expected based on previous reports. Findings and hypotheses regarding lowered prevalence rates are discussed.

背景与目标：

BACKGROUND & AIMS: BACKGROUND:The literature reports that the learning curve for laparoscopic Roux-en-Y gastric bypass (LRYGBP) is approximately 75-100 cases. This aim of the present study was to evaluate the safety and feasibility of shortening the learning curve for performing LRYGBP by an experienced laparoscopic surgeon. METHODS:This study analyzed retrospectively the first 100 consecutive LRYGBP cases performed by an experienced laparoscopic surgeon between April 2003 and September 2003. The surgeon performed these cases after first assisting in 30 cases, and the first 4 cases were proctored by an experienced laparoscopic bariatric surgeon. Two cases done after previous gastric stapling and Nissen fundoplication were excluded from the study. Outcome variables included operative time, complications, conversion, and mortality. RESULTS:For the first 100 LRYGBP patients, the mean age was 42.6 years (range, 22-62 years) and mean body mass index (BMI) was 47.6 kg/m2 (range, 36-71.8). The complications included 1 case of intestinal leak, 1 case of small bowel obstruction, 6 cases of gastrojejunal stenosis, 8 cases of wound infection, 1 case of wound seroma, and 2 cases of pulmonary embolism, resulting in 1 mortality. One case was converted to an open technique. Over the second 50 cases, there was a significant reduction in mean operative time, to 73 minutes (range, 39-145 minutes) from 113 minutes (range, 54-238 minutes) (P < .0001). However, despite the reduction in complication frequency (no gastrointestinal leak or obstruction, 2 cases of gastrojejunal stenosis, 2 cases of wound infection, no pulmonary embolism/deep venous thrombosis, and no mortality), there was no significant correlation between the mortality, conversion, and complication rates and the surgeon's experience. CONCLUSION:A bariatric surgical practice incorporating LRYGBP can be safely done by an experienced laparoscopic surgeon. With appropriate advanced laparoscopic skills, preparatory steps, proctorship, and adequate volume of cases, the learning curve for performing LRYGBP can be reduced to 50 cases. Further experience is associated with a significant reduction in operative time with acceptable mortality, complication, and conversion rates.

背景与目标：

BACKGROUND & AIMS: :Professional antigen-presenting cells (APC) are able to process and present exogenous antigen leading to the activation of T cells. Antigen-immunoglobulin (Ig)G complexes (IC) are much more efficiently processed and presented than soluble antigen. Dendritic cells (DC) are known for their ability to take up and process immune complex (IC) via FcgammaR, and they have been shown to play a crucial role in IC-processing onto major histocompatibility complex (MHC) class I as they contain a specialized cross-presenting transport system required for MHC class I antigen-processing. However, the MHC class II-antigen-processing pathway is distinct. Therefore various other professional APC, like macrophages and B cells, all displaying FcgammaR, are thought to present IC-delivered antigen in MHC class II. Nonetheless, the relative contribution of these APC in IC-facilitated antigen-presentation for MHC class II in vivo is not known. Here we show that, in mice, both macrophages and DC, but not B cells, efficiently capture IC. However, only DC, but not macrophages, efficiently activate antigen-specific MHC class II restricted CD4(+) T cells. These results indicate that mainly DC and not other professional APC, despite expressing FcgammaR and MHC class II, contribute significantly to IC-facilitated T cell activation in vivo under steady-state conditions.

背景与目标： : 专业抗原呈递细胞 (APC) 能够处理和呈递导致T细胞活化的外源性抗原。抗原-免疫球蛋白 (Ig)G复合物 (IC) 比可溶性抗原更有效地处理和呈现。树突状细胞 (DC) 以其通过FcgammaR吸收和处理免疫复合物 (IC) 的能力而闻名。并且它们已被证明在IC处理到主要组织相容性复合体 (MHC) I类上起着至关重要的作用，因为它们包含MHC I类抗原处理所需的专门交叉呈递转运系统。然而，MHC II类抗原处理途径是不同的。因此，其他各种专业的APC，如巨噬细胞和b细胞，都显示FcgammaR，被认为在MHC II类中呈现IC递送的抗原。尽管如此，这些APC在体内MHC II类的IC促进抗原呈递中的相对贡献尚不清楚。在这里，我们表明，在小鼠中，巨噬细胞和DC，但不是b细胞，有效地捕获IC。然而，只有DC，但不是巨噬细胞，有效激活抗原特异性MHC II类限制性CD4(+) T细胞。这些结果表明，尽管表达FcgammaR和MHC II类，但主要是DC而不是其他专业APC，在稳态条件下对IC促进的T细胞激活有显着贡献。

BACKGROUND & AIMS: :Fine needle aspiration cytology (FNAC) is an important tool in the investigation of thyroid nodules and has few reported complications. We present the first report of recurrent laryngeal nerve palsy arising as a complication of thyroid nodule FNAC. This complication led to inaccurate diagnosis and unnecessarily radical surgery, with consequent increased morbidity.

背景与目标： : 细针穿刺细胞学检查 (FNAC) 是检查甲状腺结节的重要工具，几乎没有并发症的报道。我们提出了作为甲状腺结节FNAC并发症引起的喉返神经麻痹的第一份报告。这种并发症导致不准确的诊断和不必要的根治性手术，从而增加了发病率。

BACKGROUND & AIMS: PURPOSE:Medication and nutrient administration considerations after bariatric surgery are discussed. SUMMARY:Bariatric surgery is categorized by surgical technique (i.e., restrictive procedure or a combination of restrictive and malabsorptive procedures). Roux-en-Y gastric bypass is the most frequently performed bariatric surgery in the United States. Patients who have undergone this surgery are at risk for nutrient deficiencies. Several factors, such as pH and absorption sites, should be considered when providing these patients with appropriate supplementation. Drug solubility and surface area for absorption are also affected by gastric bypass procedures. By bypassing major portions of the small intestine, Roux-en-Y procedures drastically reduce the surface area for absorption. These changes may warrant manipulation in drug route or dose to ensure adequate delivery. Drugs with long absorptive phases that remain in the intestine for extended periods are likely to exhibit decreased bioavailability in these patients. The reduced size of the stomach after surgery can place patients at risk for adverse events associated with some medications. Medications implicated in such adverse events include nonsteroidal antiinflammatory drugs, salicylates, and oral bisphosphonates. Drugs that are rapidly and primarily absorbed in the stomach or duodenum are likely to exhibit decreased absorption in patients who have had combination restrictive-malabsorptive procedures. Because reduced drug absorption may result in decreased efficacy rather than toxicity, increased patient monitoring for therapeutic effects can help detect potential absorption problems. CONCLUSION:Selection of appropriate nutrient salts can improve nutrient replacement in patients who have undergone bariatric surgery. Changes in dosage forms based on drug characteristics can improve bioavailability.

背景与目标：

BACKGROUND & AIMS: :The practice of duplicate publication has been condemned widely in the scientific community and several studies have been conducted to establish the level of the problem in various surgical fields. A retrospective review of original articles from the British Journal of Plastic Surgery and Plastic and Reconstructive Surgery during 2000 was conducted, using Medline (PubMed). A total of 431 abstracts were screened, from which 27 index articles related to 33 'suspected redundant' publications. Further evaluation was carried out by comparing the full text versions of these articles and assigning a grade of non-dual, dual, potentially dual and 'salami-slicing'. Only four suspect articles were confirmed as having some degree of redundancy, and these related to three index articles (3/431, <1%). The incidence of duplication in plastic surgery literature seems to be much lower compared to other surgical specialties, providing reassurance for reviewers, editors and readers of these journals.

背景与目标： : 重复出版的做法在科学界受到广泛谴责，并且已经进行了几项研究以确定各个外科领域的问题水平。使用Medline (PubMed) 对《英国整形外科杂志》和《整形与重建外科2000年》的原始文章进行了回顾性审查。总共筛选了431篇摘要，其中27篇索引文章与33篇 “可疑冗余” 出版物有关。通过比较这些文章的全文版本并分配非对偶，对偶，潜在对偶和 “萨拉米切片” 等级来进行进一步评估。仅四个可疑文章被确认为具有一定程度的冗余，并且这些与三个索引文章有关 (3/431，<1%)。与其他外科专业相比，整形外科文献中重复的发生率似乎要低得多，这为这些期刊的审阅者，编辑和读者提供了保证。

BACKGROUND & AIMS: We have used 600 MHz 1H NMR spectroscopy data to determine the solution structure of a 31-residue domain of a murine class II major histocompatibility (MHC) protein. This domain, I-Ab(beta)-(60-90), binds to the superantigen staphylococcal enterotoxin A. Distance geometry and dynamical simulated annealing calculations were performed using NOESY- and COSY-deduced constraints. I-Ab(beta)-(60-90), which is mostly alpha-helical, is more similar to the corresponding region of the class II MHC protein HLA-DR1 than to the class I MHC protein HLA-A2. Arg-72 and Arg-80 lie on the same side of the helix and face away from the antigenic peptide binding groove. His-81, implicated in both superantigen and peptide binding, is located midway between the surface defined by Arg-72/Arg-80 and residues that define the inside of the peptide binding groove, allowing for its participation in both types of binding.

背景与目标： 我们使用了600 MHz 1H NMR光谱数据来确定鼠II类主要组织相容性 (MHC) 蛋白的31残基结构域的溶液结构。该结构域I-Ab(beta)-(60-90) 与超抗原葡萄球菌肠毒素A结合。使用NOESY和COSY推导的约束进行距离几何和动态模拟退火计算。I-Ab (β)-(60-90)，其主要是 α-螺旋的，比I类MHC蛋白HLA-DR1的相应区域更类似于I类MHC蛋白HLA-A2。Arg-72和Arg-80位于螺旋的同一侧，并远离抗原肽结合槽。His-81与超抗原和肽结合有关，位于由Arg-72/Arg-80定义的表面和定义肽结合凹槽内部的残基之间的中间，允许其参与两种类型的结合。

BACKGROUND & AIMS: BACKGROUND:Several case reports have raised serious concerns about the safety of shoulder surgery in the beach-chair position, related to global cerebral hypoperfusion. We summarize our experiences with 15,014 cases of shoulder arthroscopy over an 11-year period. Our primary aim was to evaluate the incidence of intraoperative or immediate postoperative neurologic events and secondarily to relate other perioperative complications. METHODS:We searched our online deidentified departmental quality improvement and patient safety database for adverse outcomes associated with arthroscopic shoulder surgery performed in the beach-chair position for the 11-year period between April 2001 and November 2011, as well as our hospital-system database and a statewide database. This was compared with the total number of such cases, available from our department billing database. RESULTS:The total rate of adverse events was 0.37%. Neurologic abnormalities suggestive of acute cerebral ischemia or hemorrhage did not occur in the immediate perioperative period. One new neurologic deficit was reported, secondary to ischemic stroke, which occurred 24 hours after the surgery. The most frequent complications detected were unplanned return to care (0.067%), local anesthetic systemic toxicity (0.053%), and airway compromise requiring unplanned intubation (0.033%). Complications were infrequent and did not vary in incidence over the course of the study. CONCLUSIONS:This retrospective study suggests that intraoperative or immediate postoperative stroke is rare when surgery is conducted in beach-chair position in conjunction with regional anesthesia, propofol sedation, and spontaneous respiration via natural airway.

背景与目标：

BACKGROUND & AIMS: PURPOSE:To determine whether corneal topical application of mitomycin-C (MMC) results in measurable plasma levels of systemic absorption. SETTING:Madigan Army Medical Center, Refractive Surgery Center, Fort Lewis, Washington, and Micro-Constants Laboratory, San Diego, California, USA. DESIGN:Case-control study. METHODS:The study comprised male and female active-duty soldiers having excimer laser photorefractive keratectomy with MMC. Patients who met inclusion criteria were asked to provide a blood sample immediately after being treated with MMC 0.2 mg/mL (0.02%) for 30 seconds. Human plasma samples were evaluated by liquid chromatography mass spectrometry to determine whether MMC was present. RESULTS:Thirty samples were submitted for evaluation. There was zero detection of MMC in the submitted samples. The quantifiable limit was greater than 10.0 ng/mL. All samples were below this. CONCLUSIONS:In this study of 30 patients with topical application of MMC for refractive surgery, there was no measurable evidence of systemic absorption. Although systemic absorption has been found with use in larger quantities, it was not known whether MMC toxicity concerns could be extrapolated to the refractive surgery population. This information allows counseling of patients on the extremely low likelihood of systemic absorption or toxicity following current techniques for refractive surgery. FINANCIAL DISCLOSURE:No author has a financial or proprietary interest in any material or method mentioned.

背景与目标：

BACKGROUND & AIMS: :Twenty patients with strabismus and diplopia following surgery for retinal detachment were treated by botulinum toxin injection of the eye muscles. Twelve patients had regained fusion with elimination of diplopia in the primary position at the time of examination, 5 to 96 months after treatment (mean, 24 months). Three patients had partial diplopia elimination, and five patients continued to have diplopia.

背景与目标： : 通过肉毒杆菌毒素注射眼肌治疗20例视网膜脱离术后斜视和复视患者。12名患者在检查时恢复了融合，并在治疗后5至96个月 (平均24个月) 在主要位置消除了复视。3例患者部分复视消除，5例患者继续复视。

BACKGROUND & AIMS: :Hemorrhage is the most preventable cause of posttraumatic death. Many cases are potentially anatomically salvageable, yet remain lethal without logistics or trained personnel to deliver diagnosis or resuscitative surgery in austere environments. Revolutions in technology for remote mentoring of ultrasound and surgery may enhance capabilities to utilize the skill sets of non-physicians. Thus, our research collaborative explored remote mentoring to empower non-physicians to address junctional and torso hemorrhage control in austere environments. Major studies involved using remote-telementored ultrasound (RTMUS) to identify torso and junctional exsanguination, remotely mentoring resuscitative surgery for torso hemorrhage control, understanding and mitigating physiological stress during such tasks, and the technical practicalities of conducting damage control surgery (DCS) in austere environments. Iterative projects involved randomized guiding of firefighters to identify torso (RCT) and junctional (pilot) hemorrhage using RTMUS, randomized remote mentoring of MedTechs conducting resuscitative surgery for torso exsanguination in an anatomically realistic surgical trainer ("Cut Suit") including physiological monitoring, and trained surgeons conducting a comparative randomized study for torso hemorrhage control in normal (1g) versus weightlessness (0g). This work demonstrated that firefighters could be remotely mentored to perform just-in-time torso RTMUS on a simulator. Both firefighters and mentors were confident in their abilities, the ultrasounds being 97% accurate. An ultrasound-naive firefighter in Memphis could also be remotely mentored from Hawaii to identify and subsequently tamponade an arterial junctional hemorrhage using RTMUS in a live tissue model. Thereafter, both mentored and unmentored MedTechs and trained surgeons completed resuscitative surgery for hemorrhage control on the Cut-Suit, demonstrating practicality for all involved. While remote mentoring did not decrease blood loss among MedTechs, it increased procedural confidence and decreased physiologic stress. Therefore, remote mentoring may increase the feasibility of non-physicians conducting a psychologically daunting task. Finally, DCS in weightlessness was feasible without fundamental differences from 1g. Overall, the collective evidence suggests that remote mentoring supports diagnosis, noninvasive therapy, and ultimately resuscitative surgery to potentially rescue those exsanguinating in austere environments and should be more rigorously studied.

背景与目标： : 出血是创伤后死亡最可预防的原因。许多病例在解剖学上可能是可挽救的，但如果没有后勤人员或训练有素的人员在严峻的环境中进行诊断或复苏手术，则仍然致命。超声波和外科手术远程指导技术的革命可能会增强利用非医生技能的能力。因此，我们的研究合作探索了远程指导，以使非医生能够在严峻的环境中解决交界处和躯干出血控制问题。主要研究包括使用远程远程超声 (RTMUS) 识别躯干和交界性放血，远程指导复苏手术以控制躯干出血，理解和减轻此类任务期间的生理压力，以及在严峻环境中进行损伤控制手术 (DCS) 的技术实用性。迭代项目包括随机指导消防员使用RTMUS识别躯干 (RCT) 和交界 (pilot) 出血，随机远程指导MedTechs在解剖学上逼真的外科训练器 (“切割服”) 中进行躯干放血的复苏手术，包括生理监测，和训练有素的外科医生进行了一项比较随机研究，以正常 (1g) 与失重 (0g) 的躯干出血控制。这项工作表明，可以远程指导消防员在模拟器上执行及时的躯干RTMUS。消防员和导师都对自己的能力充满信心，超声波97% 准确。孟菲斯的一名未经超声检查的消防员也可以从夏威夷进行远程指导，以识别并随后在活组织模型中使用RTMUS填塞动脉交界性出血。此后，经过指导和未经指导的MedTechs和训练有素的外科医生都完成了复苏手术，以控制剪裁服上的出血，这证明了所有参与者的实用性。虽然远程指导并没有减少MedTechs的失血，但它增加了程序信心并减少了生理压力。因此，远程指导可能会增加非医生执行心理艰巨任务的可行性。最后，失重的dc是可行的，与1g没有根本差异。总体而言，集体证据表明，远程指导支持诊断，无创治疗以及最终的复苏手术，以潜在地挽救那些在严峻环境中放血的人，因此应进行更严格的研究。

BACKGROUND & AIMS: OBJECTIVES:To evaluate temperament and character traits using the Junior Temperament and Character Inventory (JTCI) in children and adolescents with major depressive disorder (MDD) in comparison with healthy control subjects (HC), and to verify if comorbidity with disruptive behavioral disorders and being currently depressed influence JTCI scores. METHODS:A case-control study comprising 41 MDD children/adolescents matched to 40 HC by gender and age (8-17years). All participants were assessed diagnostically with the Kiddie Schedule for Affective Disorders and Schizophrenia - Present and Lifetime (K-SADS-PL). Temperament and character traits were measured with the parent and child versions of JTCI, and depression was evaluated with the Children's Depression Rating Scale (CDRS). RESULTS:According to child and parent data, MDD subjects had significantly higher scores on harm avoidance and novelty seeking, and lower scores on reward dependence, persistence, self-directedness and cooperativeness compared with HC. According to parent data only, MDD subjects significantly differed from HC on self-transcendence (lower spirituality scores and higher fantasy scores). Comorbidity with disruptive behavioral disorders exerted influence on almost all dimensions, in general increasing the mean differences between MDD and HC subjects. Also, being currently depressed did not influence the results, except for reward dependence according to parent data. LIMITATIONS:The cross-sectional nature of the study and its limited sample size. CONCLUSIONS:MDD children/adolescents have a different temperament and character profile compared to HC subjects. This study supports previous findings of trait-like characteristics of harm avoidance and self-directedness.

背景与目标：

BACKGROUND & AIMS: AIMS:To assess the relationship between ambulance attendances, emergency department (ED) presentations and hospital admissions for acute alcohol intoxication and the timing of public holidays, sporting and social events. DESIGN:Time-series analysis was used to explore trends in intoxication in the context of major events. SETTING:Population of Melbourne, Victoria, Australia between 2000 and 2009. PARTICIPANTS:All patients attended by ambulance, presenting to hospital EDs, or admitted to hospital who were classified as acutely alcohol intoxicated. MEASUREMENT:Analysis of daily numbers of presentations for acute alcohol intoxication associated with major events were undertaken, including lead and lag effects. Analyses controlled for day of week and month of year to address temporal and seasonal variations. FINDINGS:Alcohol intoxication presentations were significantly elevated the day before all public holidays, with intoxication cases on the day of public holidays only higher on New Year's Day (ambulance 6.57, 95% confidence intervals (CI): 3.4-9.74; ED 3.34, 95% CI: 1.28-5.4) and ANZAC Day (ambulance 3.71, 95% CI: 0.68-6.75). The Australian Football League (AFL) Grand Final (ED 2.37, 95% CI: 0.55-4.19), Commonwealth Games (ED 2.45, 95% CI: 0.6-4.3) and Melbourne Cup Day (ambulance 6.14, 95% CI: 2.42-9.85) represented the sporting events with significant elevations in acute intoxication requiring medical attention. The last working day before Christmas was the only social event where a significant increase in acute intoxication occurred (ambulance 8.98, 95% CI: 6.8-11.15). CONCLUSIONS:Acute alcohol intoxication cases requiring ambulance, emergency department and hospital in-patient treatment increase substantially on the day preceding public holidays and other major social events.

背景与目标：

BACKGROUND & AIMS: OBJECTIVES:The role of surgery in stage IV gallbladder (GB) cancer is not well established. This study analyses prognostic factors in patients with stage IV GB cancer following surgical resection with the aim of identifying a subgroup of patients who might benefit from surgical resection. METHODS:Clinicopathological details were analysed for 94 patients who were surgically treated for stage IV GB cancer at Seoul National University Hospital. RESULTS:Median survival was 8 months in patients with either stage IVa or IVb disease. Sixteen patients (17.0%) underwent resection with curative intent, which increased overall survival over that in patients undergoing palliative surgery (P < 0.001). No survival benefit was seen following surgery with curative intent in patients with stage IVa disease (P = 0.764). Surgery with curative intent resulted in a survival benefit in patients with stage IVb disease, patients with an isolated liver metastasis near the GB bed (median survival: 31 months vs. 9 months; P < 0.001) and patients with limited numbers of peritoneal implantations (median survival: 20 months vs. 6 months; P = 0.002). Preoperative serum carcinoembryonic antigen (CEA) (P = 0.018), surgery with curative intent (P = 0.045) and adjuvant chemotherapy (P = 0.002) were independent prognostic factors in patients with stage IV GB cancer. CONCLUSIONS:Surgery in combination with systemic chemotherapy may be beneficial in carefully selected patients with stage IVb GB cancer.

背景与目标：