Introduction: Contrast-induced nephropathy (CIN), defined as an increase in serum creatinine (SCr) greater than 25% or ≥0.5 mg/dL within 3 days of intravenous (IV) contrast administration in the absence of an alternative cause, is the third most common cause of new acute renal failure in hospitalized patients. It is known to increase in-hospital mortality up to 27%. The purpose of this study was to investigate the rate of outpatient follow up and the occurrence of CIN in patients who presented to the emergency department (ED) and were discharged home after computed tomography (CT) of the abdomen and pelvis (AP) with IV contrast.Methods: We conducted a single center retrospective review of charts for patients who required CT of AP with IV contrast and who were discharged home. Patients' clinical data included the presence of diabetes mellitus, hypertension, chronic kidney disease (CKD) and congestive heart failure (CHF).Results: Five hundred and thirty six patients underwent CT of AP with IV contrast in 2011 and were discharged home. Diabetes mellitus was documented in 96 patients (18%). Hypertension was present in 141 patients (26.3%), and 82 patients (15.3%) were on angiotensin-converting-enzyme inhibitors (ACEI). Five patients (0.9%) had documented CHF and all of them were taking furosemide. Seventy patients (13%) had a baseline SCr >1.2 mg/dL. One hundred fifty patients (28%) followed up in one of the clinics or the ED within one week after discharge, but only 40 patients (7.5%) had laboratory workup. Out of 40 patients who followed up within 1 week after discharge, 9 patients (22.5%) developed CIN. One hundred ninety patients (35.4%) followed up in one of the clinics or the ED after 7 days and within 1 month after discharge, but only 71 patients (13.2%) had laboratory workup completed. Out of 71 patients who followed up within 1 month, 11 patients (15%) developed CIN. The overall incidence of CIN was 15.3% (17 out of 111 patients).Conclusion: There was a poor outpatient follow up after CT of AP with IV contrast and biochemically CIN appears to be present in some patients. Unlike previous reports that CKD is the major risk factor for CIN, our results demonstrated that risk factors such as advanced age, DM and hypertension seem to predispose patients to CIN rather than abnormal baseline SCr. [West J Emerg Med. 2014;15(3):276–281.]

We illustrate how technology has influenced creative, embodied practices in urban dance styles by analyzing how technological metaphors underlie conceptual representations of the body, space, and movement in three related styles of urban dance: liquid, digitz, and finger tutting. The creative and technical embodied practices of urban dancers are not well understood in either the ethnographic or creative movement scholarly literature. Following an exploratory netnography of movement practitioners, we claim that unlike most dancers of traditional genres or other urban dance styles, dancers of these three styles frequently employ representations of the body and of space that are geometrical, mathematical, mechanical, or digital. To explain how viewers perceive and understand these metaphors, we extend the perceptual theory of structure from motion in order to apply dance performance reception theory to a model we call 'Structural Illusion from Embodied Motion' (SIEM). Our analysis of performance techniques of these styles suggests that during performance, dancers leverage SIEM to represent two types of 'illusions' to viewers: a) the dancer's body has a reconfigurable structure; and b) the dancer is immersed in a virtual environment that contains invisible, mutable objects and structures that are revealed only through the dancer's movement. The three dance styles exemplify a trend in popular dance in which body, space, and time are understood in the language of technology.

Are elderly adults with vitamin D deficiency at increased risk of developing dementia? EVIDENCE-BASED ANSWERProbably. Vitamin D (25[OH]-D) deficiency and insufficiency in older adults are associated with a greater risk for developing dementia compared with individuals with sufficient levels of 25(OH)-D, but not Alzheimer's dementia (SOR: B, meta-analysis of cohorts). Additionally, older patients with vitamin D deficiency experience more cognitive decline over time than those with normal levels (SOR: B, systematic review of cohorts and cross-sectional studies, and a single cohort).

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