Vitamin D status and supplementation before and after bariatric surgery: a comprehensive literature review.

BACKGROUND: Bariatric surgery is the most effective long-term weight loss method. The most common procedures are Roux-en-Y gastric bypass (RYGB) and vertical sleeve gastrectomy (VSG). Bariatric patients are at high risk of vitamin D deficiency (VDD) and insufficiency (VDI), which are associated with skeletal and nonskeletal ailments. There is no consensus regarding the optimal treatment for VDD/VDI in bariatric patients. OBJECTIVES: To critically examine the literature on vitamin D status (serum 25[OH]D concentrations) pre- and postbariatric surgery as well as supplementation regimens currently used. METHODS: We searched PubMed, Embase, and Cochrane from inception to May 2015 for articles relating to vitamin D, RYGB, and VSG. Of 208 citations retrieved, 30 were included. RESULTS: Preoperative VDD (<20 ng/mL) ranged from 13% to 90%, while VDI (<30 ng/mL) was found in up to 98%. Prevalence remained similar postoperatively and was highest after RYGB. Most studies found dosages<800 IU daily insufficient postbariatric surgery. Other studies examined the effectiveness of dosages between 1000 and 5000 IU daily, reaching similar conclusions. Several studies suggested using 50,000 IU weekly plus a daily dose. No studies reported optimization. CONCLUSIONS: It is widely accepted that serum 25(OH)D concentrations above 30 ng/mL are optimal; however, current postbariatric vitamin D supplementation fails to raise 25(OH)D above that level universally. This review highlights both the great need and the lack of consensus on the optimal supplementation regimen (dosage and frequency) for pre- and postbariatric patients. Future studies should investigate multiple regimens and attempt to identify methods for personalizing these regimens if found necessary.

Self-inflicted burns: a systematic review of the literature.

Suicide attempts by self-immolation are relatively rare in North America, but the physical, psychological, and social effects on the patients, families, and staff are significant. An understanding of the characteristics of the self-inflicted burn population is imperative to better inform acute, postacute, and long-term care. The goal of the present systematic review is to summarize existing literature findings on self-inflicted burns in the United States. Seven databases were searched for articles published between 1970 and 2011 in the English language, which investigated self-burning. Thirty-two articles met selection criteria for inclusion. Review of the literature revealed that published studies on self-inflicted burns are scarce, inconclusive, and weak in design. Most studies contained limited contextual information and limited data on the long-term outcomes of survivors of self-inflicted burn injuries. Despite lack of consistency in data-collection methods and contradictory findings across studies, this review provides insight into both the characteristics of self-immolators and the context in which self-immolation events occur. A picture emerged of a group of individuals who act impulsively in the context of psychiatric and or alcohol/drug disorder, and individuals who may be reacting to stressful life events and loss. Although sparse, the existing data examining long-term outcomes in the self-inflicted burn population indicate that survivors can be successfully rehabilitated, provided that early and intense psychiatric and social interventions are in place. Future investigations are needed to further inform the development of best practices for every phase of treatment and recovery of self-inflicted burn survivors.