Colovesical Fistula: An Uncommon Cause of Hematuria and Rectal Bleeding.

Colovesical fistula is an infrequent complication of diverticular disease that presents with pneumaturia, fecaluria, dysuria and, rarely, hematuria or hematochezia. Here we present a case of concurrent hematuria and rectal bleeding arising from a diverticular bleed traversing a previously undiagnosed colovesical fistula. Other causes of colovesical fistula include Crohn's disease, radiation, and malignancy, though it is most commonly caused by complicated diverticulitis as in this case. Computed tomography (CT) imaging, cystoscopy, and gastrograffin enema have been described as high-yield diagnostic tests. Interestingly, colonoscopy is only successful in diagnosing colovesical fistula in approximately 55% of cases. Management often requires surgical intervention, as in this case, given limited success with conservative management. Colovesical fistula should be considered in patients presenting with fecaluria, pneumaturia, and dysuria as well as in cases of hematuria.

Astrocytic modulation of cortical oscillations.

Brain waves are rhythmic voltage oscillations emerging from the synchronization of individual neurons into a neuronal network. These oscillations range from slow to fast fluctuations, and are classified by power and frequency band, with different frequency bands being associated with specific behaviours. It has been postulated that at least ten distinct mechanisms are required to cover the frequency range of neural oscillations, however the mechanisms that gear the transition between distinct oscillatory frequencies are unknown. In this study, we have used electrophysiological recordings to explore the involvement of astrocytic K+ clearance processes in modulating neural oscillations at both network and cellular levels. Our results indicate that impairment of astrocytic K+ clearance capabilities, either through blockade of K+ uptake or astrocytic connectivity, enhance network excitability and form high power network oscillations over a wide range of frequencies. At the cellular level, local increases in extracellular K+ results in modulation of the oscillatory behaviour of individual neurons, which underlies the network behaviour. Since astrocytes are central for maintaining K+ homeostasis, our study suggests that modulation of their inherent capabilities to clear K+ from the extracellular milieu is a potential mechanism to optimise neural resonance behaviour and thus tune neural oscillations.

Patient emotions and perceptions of antiepileptic drug changes and titration during treatment for epilepsy.

OBJECTIVE: To investigate the impact of antiepileptic drug (AED) change and dose titration on the emotional well-being of patients with epilepsy. METHODS: Members of an online epilepsy community were invited to voluntarily participate in an online survey. The cross-sectional anonymous survey consisted of 31 multiple choice questions balanced in terms of variety and positivity/negativity of emotions concerning participants' most recent AED change. To substantiate survey results, spontaneous comments from epilepsy-related online forums and social media websites that mentioned participants' experiences with AED medication changes (termed passive listening statements) were analyzed and categorized by theme. RESULTS: All 345 survey participants (270 [78.3%] female; 172 [49.9%] were 26-45years old) self-reported an epilepsy/seizure diagnosis and were currently taking seizure medication; 263 (76.2%) were taking ≥2 AEDs and 301 (87.2%) had ≥1 seizure in the previous 18months. All participants reported a medication change within the previous 12months (dose increased [153 participants (44.3%)], medication added [105 (30.4%)], dose decreased [49 (14.2%)], medication removed [38 (11.0%)]). Improving seizure control (247 [71.6%]) and adverse events (109 [31.6%]) were the most common reasons for medication change. Primary emotions most associated (≥10% of participants) with an AED regimen change were (before medication change; during/after medication change) hopefulness (50 [14.5%]; 43 [12.5%]), uncertainty (50 [14.5%]; 69 [20.0%]), and anxiety (35 [10.1%]; 45 [13.0%]), and were largely due to concerns whether the change would work (212/345 [61.4%]; 180/345 [52.2%]). In the text analysis segment aimed at validating the survey, 230 participants' passive listening statements about medication titration were analyzed; additional seizure activity during dose titration (93 [40.4%]), adverse events during titration (71 [30.9%]), higher medication dosages (33 [14.3%]), and drug costs (25 [10.9%]) were the most commonly noted concerns. CONCLUSION: Although the emotional well-being of patients with epilepsy is complex, our study results suggest that participants report their emotional well-being as negatively affected by changes in AED regimen, with most patients reporting uncertainty regarding the outcome of such a change. Future research is warranted to explore approaches to alleviate patient concerns associated with AED medication changes.

Campylobacter Pouchitis Mimicking the Appearance of Crohn's Disease.

An unusual case of campylobacter pouchitis resembling the endoscopic appearance of Crohn's disease is reported.

Retrospective age-of-onset and projected lifetime prevalence of psychiatric disorders among U.S. Army National Guard soldiers.

BACKGROUND: The study of military-related mental health has been disproportionately focused on current symptomology rather than potentially more informative life course mental health. Indeed, no study has assessed age-of-onset and projected lifetime prevalence of disorders among reservists. METHODS: Age-of-onset and projected lifetime DSM-IV anxiety, mood, and substance use disorders were assessed in 671 Ohio Army National Guard soldiers aged 17-60 years. Between 2008 and 2012, face-to-face clinical assessments and surveys were conducted using the Structured Clinical Interview for DSM-IV and Clinician-Administered PTSD Scale. RESULTS: Lifetime prevalence of psychiatric disorders was 61%. Alcohol abuse/dependence (44%) and major depressive disorder (23%) were the most common disorders. The majority (64%) of participants reported disorders antedating enlistment. Median age-of-onset varied with anxiety disorders - particularly phobias and OCD - having the earliest (median=15 years) and mood disorders the latest median age-of-onset (median=21 years). LIMITATIONS: The study was limited by both the retrospective investigation of age-of-onset and the location of our sample. As our sample may not represent the general military population, our findings need to be confirmed in additional samples. CONCLUSIONS: Each psychiatric disorder exhibited a distinct age-of-onset pattern, such that phobias and OCD onset earliest, substance use disorders onset during a short interval from late-adolescence to early-adulthood, and mood disorders onset the latest. Our finding that the majority of participants reported disorders antedating enlistment suggests that an assessment of lifetime psychopathology is essential to understanding the mental health burden of both current and former military personnel.

Adverse Childhood Events and the Risk for New-Onset Depression and Post-Traumatic Stress Disorder Among U.S. National Guard Soldiers.

This article examines the relationship between childhood adversity and postdeployment new-onset psychopathology among a sample of U.S. National Guard personnel deployed during Operation Iraqi Freedom and Operation Enduring Freedom with no history of post-traumatic stress disorder (PTSD) or depression. We recruited a sample of 991 Ohio Army National Guard soldiers and conducted structured interviews to assess traumatic event exposure, a history of childhood adversity, and postdeployment depression, and PTSD, consistent with the Diagnostic and Statistical Manual of Mental Disorders-Fourth Edition. We assessed childhood adversity by using questions from the Childhood Adverse Events Survey. In multivariable logistic models, a history of any childhood adversity was significantly associated with new-onset depression, but not PTSD, postdeployment. This finding suggests that a history of childhood adversity is predisposing for new-onset depression, among U.S. National Guard soldiers who were deployed with no prior history of PTSD or depression. This highlights the centrality of childhood experience for the production of mental health among soldiers.

Civilian stressors associated with alcohol use disorders in the National Guard.

BACKGROUND: Alcohol use disorders are a serious public health concern among soldiers. Although deployment-related exposures have been linked with alcohol use disorders in soldiers, less is understood about the link between modifiable, civilian stressors and post-deployment alcohol use disorders. PURPOSE: To (1) compare the influence of civilian stressors and deployment-related traumatic events and stressors on post-deployment alcohol use disorders among Army National Guardsmen primarily deployed to Afghanistan and Iraq; and (2) evaluate whether civilian stressors influence a different set of alcohol use disorder phenotypes than deployment-related traumatic events and stressors. METHODS: A cohort of Ohio National Guard soldiers was recruited in 2008-2009 and interviewed three times over 3 years. The analytic sample included Ohio National Guard soldiers who had been deployed by 2008-2009, had participated in at least one follow-up wave, had reported consuming at least one alcoholic drink in their lifetime, and had non-missing data on alcohol use disorders (n=1,095). Analyses were conducted in 2013. RESULTS: In a model including measures of civilian stressors and deployment-related traumatic events, only civilian stressors (OR=2.07, 95% CI=1.46, 2.94) were associated with subsequent alcohol use disorder. The effects of civilian stressors were only present among people with no history of alcohol use disorder. CONCLUSIONS: Independent of deployment-related exposures, post-deployment civilian stressors are associated with the onset of alcohol use disorder among reserve-component soldiers. Concerted investment to address daily civilian difficulties associated with reintegration into civilian life may be needed to prevent new cases of alcohol use disorders among returning military personnel.

Synthesis of neural networks for spatio-temporal spike pattern recognition and processing.

The advent of large scale neural computational platforms has highlighted the lack of algorithms for synthesis of neural structures to perform predefined cognitive tasks. The Neural Engineering Framework (NEF) offers one such synthesis, but it is most effective for a spike rate representation of neural information, and it requires a large number of neurons to implement simple functions. We describe a neural network synthesis method that generates synaptic connectivity for neurons which process time-encoded neural signals, and which makes very sparse use of neurons. The method allows the user to specify-arbitrarily-neuronal characteristics such as axonal and dendritic delays, and synaptic transfer functions, and then solves for the optimal input-output relationship using computed dendritic weights. The method may be used for batch or online learning and has an extremely fast optimization process. We demonstrate its use in generating a network to recognize speech which is sparsely encoded as spike times.

Gene signature distinguishes patients with chronic ulcerative colitis harboring remote neoplastic lesions.

BACKGROUND: Individuals with ulcerative colitis (UC) are at increased risk for colorectal cancer. The standard method of surveillance for neoplasia in UC by colonoscopy is invasive and can miss flat lesions. We sought to identify a gene expression signature in nondysplastic mucosa without active inflammation that could serve as a marker for remote neoplastic lesions. METHODS: Gene expression was analyzed by complementary DNA microarray in 5 normal controls, 4 UC patients without dysplasia, and 11 UC patients harboring remote neoplasia. Common gene ontology pathways of significantly differentially expressed genes were identified. Expression of genes which were progressively and significantly upregulated from controls to UC without neoplasia, to UC with remote neoplasia were evaluated by real-time polymerase chain reaction. Several gene products were also examined by immunohistochemistry. RESULTS: Four hundred and sixty-eight genes were significantly upregulated, and 541 genes were significantly downregulated in UC patients with neoplasia compared with UC patients without neoplasia. Nine genes (ACSL1, BIRC3, CLC, CREM, ELTD1, FGG, S100A9, THBD, and TPD52L1) were progressively and significantly upregulated from controls to nondysplastic UC to UC with neoplasia. Immunostaining of proteins revealed increased expression of S100A9 and REG1α in UC-associated cancer and in nondysplastic tissue from UC patients harboring remote neoplasia compared with UC patients without neoplasia and controls. CONCLUSIONS: Gene expression changes occurring as a field effect in the distal colon of patients with chronic UC identify patients harboring remote neoplastic lesions. These markers may lead to a more accurate and less invasive method of detection of neoplasia in patients with inflammatory bowel disease.

Passing the baton: a grounded practical theory of handoff communication between multidisciplinary providers in two Department of Veterans Affairs outpatient settings.

BACKGROUND: Handoffs are communication processes that enact the transfer of responsibility between providers across clinical settings. Prior research on handoff communication has focused on inpatient settings between provider teams and has emphasized patient safety. This study examines handoff communication within multidisciplinary provider teams in two outpatient settings. OBJECTIVE: To conduct an exploratory study that describes handoff communication among multidisciplinary providers, to develop a theory-driven descriptive framework for outpatient handoffs, and to evaluate the strengths and weaknesses of different handoff types. DESIGN & SETTING: Qualitative, in-depth, semi-structured interviews with 31 primary care, mental health, and social work providers in two Department of Veterans Affairs (VA) Medical Center outpatient clinics. APPROACH: Audio-recorded interviews were transcribed and analyzed using Grounded Practical Theory to develop a theoretical model of and a descriptive framework for handoff communication among multidisciplinary providers. RESULTS: Multidisciplinary providers reported that handoff decisions across settings were made spontaneously and without clear guidelines. Two situated values, clinic efficiency and patient-centeredness, shaped multidisciplinary providers' handoff decisions. Providers reported three handoff techniques along a continuum: the electronic handoff, which was the most clinically efficient; the provider-to-provider handoff, which balanced clinic efficiency and patient-centeredness; and the collaborative handoff, which was the most patient-centered. Providers described handoff choice as a practical response to manage constituent features of clinic efficiency (time, space, medium of communication) and patient-centeredness (information continuity, management continuity, relational continuity, and social interaction). We present a theoretical and descriptive framework to help providers evaluate differential handoff use, reflect on situated values guiding clinic communication, and guide future research. CONCLUSIONS: Handoff communication reflected multidisciplinary providers' efforts to balance clinic efficiency with patient-centeredness within the constraints of day-to-day clinical practice. Evaluating the strengths and weaknesses among alternative handoff options may enhance multidisciplinary provider handoff decision-making and may contribute to increased coordination and continuity of care across outpatient settings.

Eating disorders and psychiatric comorbidity among Iraq and Afghanistan veterans.

OBJECTIVE: Individuals with mental health problems are at elevated risk for eating disorders. Veterans serving in support of the conflicts in Afghanistan and Iraq (OEF/OIF) have a high prevalence of deployment-related mental health problems, but little is known about their risk for eating disorders. Our aim was to determine rates of eating disorder diagnoses among OEF/OIF veterans with mental health problems, particularly among those with comorbid mental health problems. METHODS: This retrospective, cross-sectional analysis of nationwide VA healthcare facilities used descriptive statistics and regression analyses to determine eating disorder rates in OEF/OIF veterans who were new users of VA healthcare from October 7, 2001 to December 31, 2010 (N = 593,739). RESULTS: Although the prevalence of eating disorder diagnoses was 0.007% (n = 465) in women and <0.001% (n = 192) in men, veterans diagnosed with mental health problems were significantly more likely to have an eating disorder than those without mental health diagnoses. Eating disorders were significantly more common in women with depression, posttraumatic stress disorder, and alcohol and/or drug use disorders than in women veterans without these mental health disorders. Among men, the associations between eating disorder diagnoses and comorbid mental health diagnoses closely paralleled those observed in women. CONCLUSIONS: Rates of eating disorders are significantly higher among returning veterans with comorbid mental health problems compared with those without mental health diagnoses. Further research should examine methods to improve detection and treatment of eating disorders in this population.

Gender differences in health service utilization among Iraq and Afghanistan veterans with posttraumatic stress disorder.

BACKGROUND: Little is known about gender differences in healthcare use among newly returning veterans with posttraumatic stress disorder (PTSD). We investigated gender differences in Veterans Affairs (VA) medical center health service use among Iraq and Afghanistan veterans with PTSD with and without comorbid depression and alcohol use disorders (AUD). METHODS: Using VA administrative data, bivariate and multivariate statistics were used to examine gender differences in health service use among 159,705 Operation Enduring Freedom/Operation Iraqi Freedom (OEF/OIF) veterans with PTSD seeking VA healthcare from October 7, 2001, to December 31, 2010. RESULTS: Female veterans with PTSD were more likely to be black and single and to have higher mental health, primary care, and emergency care use compared to men with PTSD. Men were more likely to have higher mental health inpatient use compared to women. Women and men with comorbid PTSD and depression or comorbid PTSD and AUD were more likely to have higher use in all domains compared to their counterparts with PTSD without these comorbid disorders. Women with comorbid PTSD and depression were 12.5 times more likely to have a mental health inpatient hospitalization compared to their female counterparts without depression and twice as likely to have a mental health hospitalization compared to men with comorbid PTSD and depression. CONCLUSIONS: Women with PTSD had higher use than men in almost all areas, as did all veterans with comorbid PTSD and depression and comorbid PTSD and AUD, regardless of gender. Better understanding these health service use differences will allow for targeted evaluation and integrated treatment interventions in veterans with PTSD.