A case of abnormally dilated and tortuous arc of Buhler and pancreaticoduodenal arteries in the absence of celiac trunk stenosis.

INTRODUCTION: The Arc of Buhler is a rare vascular variant describing a persistent remnant of the embryologic ventral anastomosis between the celiac trunk (CT) and superior mesenteric artery (SMA), invariably reported in the context of CT stenosis. PURPOSE: To report a case of (1) a large and tortuous pancreaticoduodenal arcade and (2) a large and tortuous Arc of Buhler in the absence of celiac axis stenosis. METHODS: The variant was discovered during routine cadaver dissection. We acquired transverse biopsies of variant vessels and evaluated their wall thickness. RESULTS: The donor's anterior PDA, posterior PDA, and Arc of Buhler had larger diameters, and the common hepatic artery had a smaller diameter than the literature-reported values of a standard human body. The posterior PDA had significantly increased wall thickness compared to the other investigated vessels. CONCLUSIONS: The Arc of Buhler is a rare remnant of the embryologic ventral anastomosis that is estimated to be hemodynamically active in only half of cases. Previous reports have documented hemodynamically active Arcs of Buhler only in cases of CT stenosis. To the best of the authors' knowledge, this is a unique case of a persistent and hemodynamically active Arc of Buhler in the absence of CT stenosis. Clinicians should be aware of this variant as its abnormal position may increase risk of herniation and surgical complications, and its tortuosity may increase risk of clot formation.

A designated trauma social worker improves coordination of patient care by coordinating ancillary consults.

Trauma patients face unique challenges that require coordination by social workers knowledgeable in the intricacies of trauma patient psychosocial support which is often achieved by obtaining ancillary consultations. The impact of employing a designated trauma social worker (DTSW) in the utilization of these consults has not been described. A retrospective review was conducted of trauma patients admitted to an academic, urban Level 1 trauma center. The pre-intervention cohort (n = 272) corresponded to patients admitted before the presence of a DTSW (01/2013 to 06/2013), while the post-intervention cohort (n = 282) corresponded to patients admitted afterward (09/2015 to 01/2016). Data collection included demographics, injury profile, and types of interdisciplinary or therapy consultations. Post-intervention patients were found to be older and admitted with more injuries. Supportive care, physical therapy and occupational therapy consultations were more likely to be obtained in the post-intervention cohort. Hospital length of stay remained unchanged. This study suggests that the implementation of a DTSW significantly facilitates the utilization of interdisciplinary consultations. Length of stay remains unchanged, suggesting that a DTSW helps to coordinate care in a timely manner without increasing the hospital stay. DTSW implementation may be considered in trauma centers where one does not currently exist.

A systematic review of chlorine-based surface disinfection efficacy to inform recommendations for low-resource outbreak settings.

BACKGROUND: Infectious diseases can be transmitted via fomites (contaminated surfaces/objects); disinfection can interrupt this transmission route. However, disinfection guidelines for low-resource outbreak settings are inconsistent and not evidence-based. METHODS: A systematic review of surface disinfection efficacy studies was conducted to inform low-resource outbreak guideline development. Due to variation in experimental procedures, outcomes were synthesized in a narrative summary focusing on chlorine-based disinfection against 7 pathogens with potential to produce outbreaks in low-resource settings (Mycobacterium tuberculosis, Vibrio cholerae, Salmonella spp., hepatitis A virus, rotavirus, norovirus, and Ebola virus). RESULTS: Data were extracted from 89 laboratory studies and made available, including 20 studies on relevant pathogens used in combination with surrogate data to determine minimum target concentration × time ("CT") factors. Stainless steel (68%) and chlorine-based disinfectants (56%) were most commonly tested. No consistent trend was seen in the influence of chlorine concentration and exposure time on disinfection efficacy. Disinfectant application mode; soil load; and surface type were frequently identified as influential factors in included studies. CONCLUSIONS: This review highlights that surface disinfection efficacy estimates are strongly influenced by each study's experimental conditions. We therefore recommend laboratory testing to be followed by field-based testing/monitoring to ensure effectiveness is achieved in situ.

Decreased transport time to the surgical intensive care unit.

INTRODUCTION: Extended stay in the emergency department (ED) is associated with worse outcomes in critically ill trauma patients. We conducted a human factors analysis to better understand impediments for patient flow when a surgical ICU (SICU bed is available in order to reduce ED LOS. METHODS: This is a retrospective review of all trauma patients admitted to a protected SICU through the ED during 2011 and 2014. In 2010, a 24-hour protected SICU bed protocol was implemented to make a bed readily available. During 2013 human factors analysis helped to describe flow disruptions; related interventions were introduced to facilitate rapid transport from the ED to SICU. The interventions required the following prior to CT scanning: immediate ICU bed orders placed by the ED physician and ED to ICU personnel communication. Direct transport from the CT scanner to the ICU was mandated. Data including patient demographics, injury severity, ED LOS, ICU LOS, and hospital LOS was collected and compared between 2011 (PRE) and 2014 (POST). RESULTS: A total of 305 trauma patients admitted from the ED to the SICU were analyzed; 174 patients in 2011 (PRE) and 131 in 2014 (POST). Average age was 46 years and patients had a mean admission GCS and injury severity score (ISS) of 12.3 and 15.9, respectively. The cohorts were similar in age, mechanism of injury, initial vital signs, and injury severity. After implementing the human factors interventions, decreases were noted in the mean ED LOS (2.4 v. 3.0 hours, p=0.005) and ICU LOS (4.0 v. 4.8 days, p=0.023). No differences in hospital LOS or mortality were observed. CONCLUSIONS: While an open SICU bed protocol may facilitate rapid transport of trauma patients from the ED to the ICU, additional human factors interventions emphasizing improved communication and coordination can further reduce time spent in the ED. LEVEL OF EVIDENCE: Level IV, Economic/Decision.