Hypotension in the Emergency Department and Contrast Extravasation on Computerized Tomography Predict Blood Transfusion in Low-Energy Pelvic Fractures.

INTRODUCTION: Although low-energy pelvic fractures seldom present with significant hemorrhage, early recognition of at-risk patients is essential. We aimed to identify predictors of transfusion requirements in this cohort. METHODS: A 7-y retrospective chart review was performed. Low-energy mechanism was defined as falls of ≤5 feet. Fracture pattern was classified using the Orthopedic Trauma Association/Arbeitsgemeinschaft für Osteosynthesefragen system as A, B, or C. Primary outcome was transfusion of ≥2 units of packed red blood cells in the first 48 h. Univariable analysis and logistic regression analysis were performed. A P value ≤0.05 was considered significant. RESULTS: Five hundred forty six patients were included with median (interquartile range) age of 86 (79-91) and median (interquartile range) Injury Severity Score of 5 (4-8). Five hundred forty one (99%) had type A fractures. Twenty six (5%) had the primary outcome and 17 (3%) died. Logistic regression found that systolic blood pressure <100 mmHg at any time in the Emergency Department, Injury Severity Score, and pelvic angiography were predictors of the primary outcome. Seventeen percent of those who had the primary outcome died compared with 2% who did not (P = 0.0004). Three hundred sixty four (67%) received intravenous contrast for computerized tomography scans and of these, 44 (12%) had contrast extravasation (CE). CE was associated with the primary outcome but not mortality. CONCLUSIONS: Hypotension at any time in the Emergency Department and CE on computerized tomography predicted transfusion of ≥2 units packed red blood cells in the first 48 h in patients with low-energy pelvic fractures.

Negative Splenic Angiography in Blunt Trauma: Does Embolization Affect Splenic Salvage?

Angioembolization in blunt splenic trauma is used to maximize splenic preservation. Superiority of prophylactic embolization over expectant management in patients with a negative splenic angiography (SA) is debated. We hypothesized that embolization in negative SA would be associated with splenic salvage. Of 83 patients undergoing SA, 30 (36%) had a negative SA. Embolization was performed in 23 (77%). Grade of injury, contrast extravasation (CE) on computed tomography (CT) or embolization were not associated with splenectomy. In 20 patients with either a high-grade injury or CE on CT, 17 (85%) underwent embolization with a failure rate of 24%. In the remaining 10 without high-risk features, 6 underwent embolization with a 0% splenectomy rate. Despite embolization, the failure rate of nonoperative management (NOM) remains significant in those with high-grade injury or CE on CT. A low threshold for early splenectomy after prophylactic embolization is needed.

Distal Pancreatic Necrosis After Splenic Angioembolization.

Pancreatic ischemia with necrosis is an extremely rare complication of splenic angioembolization (SAE). A 48-year-old male with a grade IV blunt splenic injury underwent angiography which demonstrated no active bleeding or pseudoaneurysm. Proximal SAE was performed. One week later, he developed severe sepsis. Repeat CT imaging showed nonperfusion of the distal pancreas, and laparotomy found necrosis of approximately 40% of the pancreas. Distal pancreatectomy and splenectomy were performed. He endured a prolonged hospital course with multiple complications. Clinicians should have a high index of suspicion for ischemic complications after SAE when sepsis develops.

Bilateral Lower Extremity Compartment Syndrome Secondary to COVID-19 Myositis in a Young Vaccinated Woman.

Coronavirus disease 2019 (COVID-19) typically manifests with respiratory symptoms and can ultimately progress to severe multiorgan failure. Viral myositis, systemic capillary leak syndrome, and arteriovenous thrombosis are atypical manifestations of COVID-19. We present a case of a 33-year-old woman, fully vaccinated against COVID-19, who developed myositis and shock. She ultimately required bilateral lower extremity fasciotomies secondary to compartment syndrome, presumably from COVID-19 myositis. Although compartment syndrome from COVID-19 myositis has been reported for ocular, hand, and thigh compartment syndromes, this is the first case report showing bilateral lower extremity compartment syndrome secondary to COVID-19 myositis in a fully vaccinated individual. As we learn more about COVID-19 and its extrapulmonary effects, it is imperative to consider all working diagnoses when working up patients. Providers must be aware of extrapulmonary effects of COVID-19, particularly in individuals who might deviate from traditional symptoms.

Is clinician assessment accurate or is routine pan-body CT needed in the stable intoxicated trauma patient?

BACKGROUND: We sought to determine if clinician suspicion of injury was useful in predicting injuries found on pan-body computed tomography (PBCT) in clinically intoxicated patients. METHODS: We prospectively enrolled awake, intoxicated patients with low-energy mechanism of injury. For each of four body regions (head/face, neck, thorax and abdomen/pelvis), clinician suspicion for injury was recorded as "low index" or "more than a low index". The reference standard was the presence of any pre-defined significant finding (SF) on CT. Sensitivity, specificity, positive (LR+) and negative (LR-) likelihood ratios were calculated. RESULTS: Enrollment of 103 patients was completed. Sensitivity, specificity, LR+ and LR-for clinician index of suspicion were: 56%, 68%, 1.75, 0.64 (head/face), 50%, 92%, 6.18, 0.54 (neck), 10%, 96%, 2.60, 0.94 (thorax) and 67%, 93%, 9.56, 0.36 (abdomen/pelvis). CONCLUSION: Clinician judgement was most useful to guide need for CT imaging in the neck and abdomen/pelvis. Routine PBCT may not be necessary. SUMMARY: For awake, stable intoxicated patients after falls and assaults, clinician index of suspicion was most useful to guide the need for CT imaging in the neck and abdomen/pelvis. Our findings support selective use of CT if the index of suspicion is low. Routine PBCT may not be necessary.

The Role of Trauma Video Review in Optimizing Patient Care.

Trauma video review allows for monitoring of performance improvement initiatives, leadership skills, system process issues, and guideline compliance. Despite the well-documented benefits, there are persistent barriers to its use including patient privacy concerns, cost, and provider anxiety. Optimizing implementation by ensuring that informed consent processes are in place, as well as a structured peer review process, can help trauma centers overcome these hurdles. Trauma video review is a unique and beneficial tool that helps tie patient care to quantifiable data, as well as serves as a platform for education opportunities.

Traumatic tension pneumocephalus - Two cases and comprehensive review of literature.

Although traumatic pneumocephalus is not uncommon, it rarely evolves into tension pneumocephalus (TP). Characterized by the presence of increasing amounts of intracranial air and concurrent appearance or worsening neurological symptoms, TP can be devastating if not recognized and treated promptly. We present two cases of traumatic TP and a concise review of literature on this topic. Two cases of traumatic TP are presented. In addition, a literature search revealed 20 additional cases, of which 18 had sufficient information for inclusion. Literature cases were combined with the 2 reported cases and analyzed for demographics, mechanism of injury, symptoms, time to presentation (acute <72 h; delayed >72 h), diagnostic/treatment modalities, and outcomes. Twenty cases were analyzed (17 males, 3 females, median age 26, range 8-92 years). Presentation was acute in 13/20 and delayed in 7/20 patients. Injury mechanisms included motor vehicle collisions (6/20), assault/blunt trauma to the craniofacial area (5), falls (4), and motorcycle/ bicycle crashes (3). Common presentations included depressed mental status (10/20), cerebrospinal fluid rhinorrhea (9), headache (8), and loss of consciousness (6). Computed tomography (CT) was utilized in 19/20 patients. Common underlying injuries were frontal bone/sinus fracture (9/20) and ethmoid fracture (5). Intracranial hemorrhage was seen in 5/20 patients and brain contusions in 4/20 patients. Nonoperative management was utilized in 6/20 patients. Procedural approaches included craniotomy (11/20), emergency burr hole (4), endoscopy (2), and ventriculostomy (2). Most patients responded to initial treatment (19/20). One early and one delayed death were reported. Traumatic TP is rare, tends to be associated with severe craniofacial injuries, and can occur following both blunt and penetrating injury. Early recognition and high index of clinical suspicion are important. Appropriate treatment results in improvement in vast majority of cases. CT scan is the diagnostic modality of choice for TP. REPUBLISHED WITH PERMISSION FROM: Pillai P, Sharma R, MacKenzie L, Reilly EF, Beery II PR, Papadimos TJ, Stawicki SPA. Traumatic tension pneumocephalus: Two cases and comprehensive review of literature. OPUS 12 Scientist 2010;4(1):6-11.

Nonoperative management of splenic injuries: significance of age.

BACKGROUND: In the nonoperative management (NOM) of blunt splenic injuries (BSI), the clinical relevance of age as a risk factor has not been well studied. METHODS: Using the 2011 National Trauma Data Bank data set, age was analyzed both as a continuous variable and a categorical variable (group 1 [13-54 y], group 2 [55-74 y], and group 3 [≥75 y]). BSI severity was stratified by abbreviated injury scale (AIS): group 1 (AIS ≤2), group 2 (AIS 3), and group 3 (AIS ≥4). A semiparametric proportional odds model was used to model NOM outcomes and effects due to age and BSI severity. RESULTS: Of 15,113 subjects, 15.3% failed NOM. The odds of failure increased by a factor of 1.014 for each year of age, or factor of 1.5 for groups 2 and 3 each. BSI severity groups 2 and 3 had increases in the odds of failure by factors of 3.9 and 13, respectively, compared with those of group 1. Most failures occurred by 48 h irrespective of age. The effect of age was most pronounced in age groups 2 and 3 with the most severe BSI, where a NOM failure rate of >50% was seen. Both age and failure of NOM were independent predictors of mortality. CONCLUSIONS: Age is associated with failure of NOM but its effect seems more clinically relevant only in high-grade BSI. Factors that could influence NOM success in elderly patients with high-grade injuries deserve further study.

Protein-based multiplex assays: mock presubmissions to the US Food and Drug Administration.

As a part of ongoing efforts of the NCI-FDA Interagency Oncology Task Force subcommittee on molecular diagnostics, members of the Clinical Proteomic Technology Assessment for Cancer program of the National Cancer Institute have submitted 2 protein-based multiplex assay descriptions to the Office of In Vitro Diagnostic Device Evaluation and Safety, US Food and Drug Administration. The objective was to evaluate the analytical measurement criteria and studies needed to validate protein-based multiplex assays. Each submission described a different protein-based platform: a multiplex immunoaffinity mass spectrometry platform for protein quantification, and an immunological array platform quantifying glycoprotein isoforms. Submissions provided a mutually beneficial way for members of the proteomics and regulatory communities to identify the analytical issues that the field should address when developing protein-based multiplex clinical assays.

Has the 80-hour work week had an impact on voluntary attrition in general surgery residency programs?

BACKGROUND: This article attempts to assess the effect of the duty-hour limitations implemented in 2003 on voluntary withdrawal of general surgery residents. STUDY DESIGN: A questionnaire asked the program directors how many categorical general surgery residents left voluntarily in 2003 to 2004, their training levels, why they left, and where they went. Results were compared with an identical study of 2000 to 2001 and analyzed statistically using chi-square analysis. RESULTS: A total of 215 programs (85%) responded, compared with 206 programs (81%) in the previous study. One hundred two programs (48%) reported voluntary attrition of 148 residents, compared with 110 programs (53%) and 167 residents previously. An average of 1.5 residents per program left in programs that reported attrition and 0.7 residents per program in all responders, compared with 1.5 and 0.8 residents in the previous study. In both studies, most programs with attrition lost one (66% [2000 to 2001] and 65% [2003 to 2004]) or two residents (21% [2000 to 2001] and 27% [2003 to 2004]). Most attrition occurred at PGY1 (47%) and PGY2 (28%) levels; a total of 75% of all attrition occurred at these levels, compared with a total of 76% in the previous study. One hundred eleven residents (75%) entered other medical specialties, and 23 (16%) transferred to other general surgery programs, compared with 105 residents (63%) and 40 residents (24%) in the previous study. In both studies, personal issues and work hours/lifestyle were cited as the most common reasons for leaving. In each study, the net loss to general surgery (the number of residents who left voluntarily divided by the total resident population at risk) was 3% for that academic year. Analysis showed no statistically significant difference. CONCLUSIONS: Rates and patterns of attrition seem to have been unaffected by Accreditation Council for Graduate Medical Education work-hours limitations.

Spontaneous colonic mesenteric hemorrhage: report of an unusual case of abdominal apoplexy.

We describe a case of idiopathic abdominal apoplexy secondary to a spontaneous mesocolic bleed. Preoperative computed tomography of the abdomen suggested a ruptured colonic mass at the splenic flexure. The diagnosis was made when exploratory laparotomy revealed hemoperitoneum and an extensive hematoma in the transverse mesocolon, with no apparent source. Idiopathic abdominal apoplexy is rare, the reported mortality has historically been high, and a short hospital stay and rapid, complete recovery are uncommon, although outcomes may be improving in recent years. We present such a case and examine the clinical presentation, management, and prognosis through literature review.

Comparison of the dissolution of metaxalone tablets (Skelaxin) using USP Apparatus 2 and 3.

The purpose of this study was to evaluate the effect of pH on the dissolution behavior of metaxalone in the marketed product Skelaxin tablets. The dissolution was evaluated using United States Pharmacopeia (USP) dissolution Apparatus 2 and 3 at pHs ranging from 1.5 to 7.4. Results from these studies show that the dissolution of this product is pH dependent. At low pH (simulated gastric fluid, pH 1.5), the dissolution of metaxalone from Skelaxin tablets was less than 10% over 75 minutes; whereas, dissolution at pH 4.5 showed greater than 90% release in the same time period. These results were consistent for both Apparatus 2 and 3. This suggests that Skelaxin Tablets should be considered a delayed release dosage form.

General surgery residency program websites: usefulness and usability for resident applicants.

OBJECTIVE: To assess the content of general surgery residency program websites, the websites' potential as tools in resident recruitment, and their "usability." DESIGN: The homepages of general surgery residency programs were evaluated for accessibility, ease-of-use, adherence to established principles of website design, and content. Investigators completed a questionnaire on aspects of their online search, including number of mouse-clicks used, number of errors encountered, and number of returns to the residency homepage. SETTING: The World Wide Web listings on the Fellowship and Residency Electronic Interactive Database (FREIDA) of the American Medical Association (AMA). PARTICIPANTS: A total of 251 ACGME-accredited general surgery residency programs. RESULTS: One hundred sixty-seven programs (67%) provided a viable link to the program's website. Evaluators found an average of 5.9 of 16 content items; 2 (1.2%) websites provided as many as 12 content items. Five of the 16 content items (program description, conference schedules, listing of faculty, caseload, and salary) were found on more than half of the sites. An average of 24 mouse-clicks was required to complete the questionnaire for each site. Forty-six sites (28%) generated at least 1 error during our search. The residency homepage was revisited an average of 5 times during each search. On average, programs adhered to 6 of the 10 design principles; only 6 (3.6%) sites adhered to all 10 design principles. Two of the 10 design principles (use of familiar fonts, absence of frames) were adhered to in more than half of the sites. Our overall success rate when searching residency websites was 38%. CONCLUSIONS: General surgery residency programs do not use the World Wide Web optimally, particularly for users who are potential residency candidates. The usability of these websites could be increased by providing relevant content, making that content easier to find, and adhering to established web design principles.

Ineffectiveness of histone deacetylase inhibitors to induce apoptosis involves the transcriptional activation of NF-kappa B through the Akt pathway.

Histone deacetylase (HDAC) inhibitors are emerging as a new class of anticancer agents for the treatment of solid and hematological malignancies. Although HDAC inhibitors induce cell death through an apoptotic process, little is known about the molecular events that control their effectiveness. In this study, we demonstrate that HDAC inhibitors are limited in their ability to induce apoptosis in non-small cell lung cancer (NSCLC) cell lines despite their ability to effectively inhibit deacetylase activity. Because the anti-apoptotic transcription factor NF-kappa B has been shown to be under the control of HDAC-mediated repression, we analyzed whether HDAC inhibitors activated NF-kappa B in NSCLC cells. HDAC inhibitors effectively stimulated endogenous NF-kappa B-dependent gene expression by up-regulating IL-8, Bcl-XL, and MMP-9 transcripts. The ability of HDAC inhibitors to increase NF-kappa B transcriptional activity was not associated with signaling events that stimulated nuclear translocation, but rather modulated the transactivation potential of the RelA/p65 subunit of NF-kappa B. The inhibition of HDAC activity was associated with the recruitment of the p300 transcriptional co-activator to chromatin in an Akt-dependent manner. Moreover, Akt directly phosphorylated p300 in vitro and was required for stimulating the transactivation potential of the co-activator following the addition of HDAC inhibitors. Selective inhibition of either the phosphoinositide 3-kinase/Akt pathway, or NF-kappa B itself blocked the ability of HDAC inhibitors to activate NF-kappa B and dramatically sensitized NSCLC cells to apoptosis following of the addition of HDAC inhibitors. Our study indicates that the ineffectiveness of HDAC inhibitors to induce apoptosis in NSCLC cancer cells is associated with the ability of these molecules to stimulate NF-kappa B-dependent transcription and cell survival.