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OBJECTIVES We aimed to clarify the definition, distribution, clinical association and outcomes of large calcinosis in patients with systemic sclerosis (SSc). METHODS We conducted a systematic literature review (SLR) focusing on SSc-related large calcified masses. Upon updating the terminology and definition, all cases of "pseudotumoral" calcinosis seen at the Cochin and Padova University Hospitals were reviewed. RESULTS The SLR yielded 30 SSc cases, with large calcified masses mainly defined as "tumoral" or "pseudotumoral". Among the 629 SSc cases included in the Cochin and Padova cohorts, 19 (3%) living and 7 deceased patients were affected by pseudotumoral calcinosis; among these, the great majority had a severe vascular phenotype. The mean age in the whole population (56 cases) was 59 ± 11.4 years with a median disease duration at calcinosis onset of 7 (5-10) years. Twenty-five out of 56 patients (44.6%) had the diffuse cutaneous form of SSc. Anti-topisomerase I and anticentromere were found equally. Pseudotumoral calcinosis were commonly symmetrical and the size ranged from 2 to 15.5 cm. Most patients had multiple site involvement 52% hand/wrist, 29% shoulders and elbows, 20% hips and 25% spinal calcinosis. Fistulization/ulceration and infections were reported in 32% and 23% of cases, respectively; nerve compression was found in 40% of spinal calcinosis and in one patient with limb calcinosis. There was no clear evidence of clinical and radiological improvement with any treatment. A partial improvement was seen in 7 patients that underwent surgery. CONCLUSION Pseudotumoral calcinosis may occur in about 3% of SSc patients, commonly symmetrical and in multiple sites without differences regarding the cutaneous subtypes but often in those with a severe vascular phenotype. Medical treatment seems ineffective, whereas a surgical approach may be considered. The Open Source PIPER child scalable human body model was publicly released in April 2017 (www.piper-project.org) along with frontal and side impact validation conditions. The objective of this paper is to investigate the effect of anthropometry scaling on the response of the model in side pelvic impact. Three setups from two published studies were used (1) a lateral drop test (2) a greater trochanter impact with a rigid pendulum (3) a pelvis side impact with a flat surface. The first study used scaling assumption developed for crash test dummy design (setups 1 and 2) and the second performed tests on post mortem human surrogates. The baseline 6 years old child model was scaled using a model morphing methodology to match the stature and weight of the surrogates used in the two published studies. Overall, the main trends observed in the three setups can be approached using the baseline model. Although the model morphing did not account for specific skeletal dimensions, it reduced some of the discrepancies between model response and reference for the drop test and flat plate impact. However, it had little effect on the pendulum test. In that case, the model response was in the corridor at low speed but above at higher speeds. Possible reasons for this difference should be further investigated. RATIONALE & OBJECTIVE The use of kidney histopathology for predicting kidney failure is not established. We hypothesized that the use of histopathologic features of kidney biopsy specimens would improve prediction of clinical outcomes made using demographic and clinical variables alone. STUDY DESIGN Retrospective cohort study and development of a clinical prediction model. SETTING & PARTICIPANTS All 2,720 individuals from the Biopsy Biobank Cohort of Indiana who underwent kidney biopsy between 2002 and 2015 and had at least 2 years of follow-up. NEW PREDICTORS & ESTABLISHED PREDICTORS Demographic variables, comorbid conditions, baseline clinical characteristics, and histopathologic features. OUTCOMES Time to kidney failure, defined as sustained estimated glomerular filtration rate ≤ 10mL/min/1.73m2. ANALYTICAL APPROACH Multivariable Cox regression model with internal validation by bootstrapping. Models including clinical and demographic variables were fit with the addition of histopathologic features. To asseificantly change the results. LIMITATIONS Selection bias from the use of clinically indicated biopsies and exclusion of patients with less than 2 years of follow-up, as well as reliance on surrogate indicators of kidney failure onset. CONCLUSIONS A model incorporating histopathologic features from kidney biopsy specimens improved prediction of kidney failure and may be valuable clinically. Future studies will be needed to understand whether even more detailed characterization of kidney tissue may further improve prognostication about the future trajectory of estimated glomerular filtration rate. STUDY OBJECTIVE We validate the Clinical Frailty Scale by examining its independent predictive validity for 30-day mortality, ICU admission, and hospitalization and by determining its reliability. We also determine frailty prevalence in our emergency department (ED) as measured with the Clinical Frailty Scale. METHODS This was a prospective observational study including consecutive ED patients aged 65 years or older, from a single tertiary care center during a 9-week period. To examine predictive validity, association with mortality was investigated through a Cox proportional hazards regression; hospitalization and ICU transfer were investigated through multivariable logistic regression. We assessed reliability by calculating Cohen's weighted κ for agreement of experts who independently assigned Clinical Frailty Scale levels, compared with trained study assistants. Frailty was defined as a Clinical Frailty Scale score of 5 and higher. RESULTS A total of 2,393 patients were analyzed in this study, of whom 128 died. Higher frailty levels were associated with higher hazards for death independent of age, sex, and condition (medical versus surgical). The area under the curve for 30-day mortality prediction was 0.81 (95% confidence interval [CI] 0.77 to 0.85), for hospitalization 0.72 (95% CI 0.70 to 0.74), and for ICU admission 0.69 (95% CI 0.66 to 0.73). Interrater reliability between the reference standard and the study team was good (weighted Cohen's κ was 0.74; 95% CI 0.64 to 0.85). Frailty prevalence was 36.8% (n=880). CONCLUSION The Clinical Frailty Scale appears to be a valid and reliable instrument to identify frailty in the ED. It might provide ED clinicians with useful information for decisionmaking in regard to triage, disposition, and treatment. https://www.selleckchem.com/
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