Scoping Review on Educational Programs for Medical Professionals on the Management of Acute Agitation.

BACKGROUND: Agitation is a common reason for psychiatric consultation in the general hospital. The consultation-liaison (CL) psychiatrist is often tasked with teaching the medical team how to manage agitation. OBJECTIVE: The purpose of this scoping review is to explore what resources the CL psychiatrist has for educational tools on teaching about agitation management. Given the frequency with which CL psychiatrists help with on-the-ground management of agitation, we hypothesized that there would be a scarcity of educational resources to teach front-line providers how to manage agitation. METHODS: Following current Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, a scoping review was conducted. The literature search focused on the electronic databases MEDLINE (PubMed), Embase (Embase.com), The Cochrane Library (Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials (CENTRAL), Cochrane Methodology Register), PsycInfo (EbscoHost), Cumulated Index to Nursing and Allied Health Literature (CINAHL) (EbscoHost), and Web of Science. Using Covidence software, after screening for titles and abstracts, full texts were screened independently and in duplicate according to our inclusion criteria. For data extraction, we created a predefined set of criteria according to which each article was analyzed. We then grouped the articles in the full-text review according to which patient population a curriculum was designed for. RESULTS: The search yielded a total of 3250 articles. After removing duplicates and reviewing procedures, we included 51 articles. Data extraction captured article type and details; educational program information (staff training, web modules, instructor led seminar); learner population; patient population; and setting. The curricula were further divided based on their target patient population, specifically the acute psychiatric patient (n = 10), the general medical patient (n = 9), and the patient with a major neurocognitive disorder such as dementia or traumatic brain injury (n = 32). Learner outcomes included staff comfort, confidence, skills, and knowledge. Patient outcomes included measurements of agitation or violence using validated scales, PRN medication use, and restraint use. CONCLUSIONS: Despite there being numerous agitation curricula in existence, we found that a large majority of these educational programs were done for patients with major neurocognitive disorders in the long-term care setting. This review highlights the gap in education related to agitation management for both patients and providers in the general medical setting, as less than 20% of total studies are focused on this population. The CL psychiatrist plays a critical role in assisting in agitation management in this setting, which often requires collaboration between technicians, nurses, and nonpsychiatric providers. It calls into question whether the lack of educational programs makes the implementation of management interventions more difficult and less effective, even with the assistance of the CL psychiatrist.

The Utility of Biomarkers in the Clinical Management of Syphilis: A Systematic Review.

BACKGROUND: Routinely available laboratory tests for Treponema pallidum remain suboptimal for diagnostic, prognostic, predictive, and monitoring purposes. Biomarkers with enhanced performance characteristics can improve diagnostic confidence and facilitate management. We conducted a systematic review to examine the utility of biomarkers in the diagnosis and management of syphilis. METHODS: We used the Preferred Reporting Items for Systematic Reviews and Meta-Analyses to identify articles for inclusion and independently reviewed them for eligibility and study quality using a 3-stage procedure. The search, conducted by a senior library informationist, used PubMed, Embase, Cochrane Library, and Scopus and included any study published before May 2022. RESULTS: Of the 111 studies identified, 31 (27.9%) were included in our review. Most studies were cross-sectional or prospective. The data were strikingly heterogeneous examining a variety of biomarkers across different syphilis stages, using different methodologies and definitions of treatment success. Available publications chiefly focused on diagnosing various syphilis stages, neurosyphilis and congenital syphilis, serological cure, the serofast state, and reinfection. CONCLUSIONS: Despite increasing attempts to identify novel biomarkers, we found limited evidence to support the use of any biomarker in clinical decision making at this time; the syphilis biomarker literature is heterogenous and lacks measurement of clinically meaningful end points. We recommend the formation of a working group to set priorities for syphilis biomarker research and to guide future study of clinically meaningful biomarkers.

Factors Leading to Successful Performance on U.S. National Licensure Exams for Medical Students: A Scoping Review.

PURPOSE: To synthesize the evidence of the factors leading to successful performance on knowledge-based national licensure exams (NLEs) for medical students. METHOD: The authors conducted a scoping review to summarize the peer-reviewed empiric literature that used United States Medical Licensing Examination (USMLE) Step 1 or Step 2 Clinical Knowledge or Comprehensive Osteopathic Medical Licensing Examination (COMLEX) Level 1 or Level 2 Cognitive Evaluation scores as outcomes. The authors searched PubMed and Scopus without date restrictions through April 30, 2021. Two reviewers independently screened and selected studies for inclusion. Data were summarized narratively and with descriptive statistics. RESULTS: The authors screened 1,185 unique citations and included 233 full-text studies in their review. Of these, 201 (86%) were studies of USMLE exams, 31 (13%) were studies of COMLEX exams, and 1 (0.4%) reported on both. The authors classified 29 studies (12%) as informing NLE preparation, 163 (70%) as attempting to identify predictive variables, and 76 (33%) as using NLE scores for program evaluation. Preparation studies found that the number of practice test items, practice exam scores, and less time in dedicated preparation correlated with higher NLE scores. Use of other commercial resources or study strategies was not consistently associated with higher scores. Predictive studies found the strongest relationships between individuals' performance on past assessments and their NLE scores. CONCLUSIONS: The factors leading to successful performance on knowledge-based NLEs align with well-known principles from the cognitive sciences. Learners build on existing foundations of knowledge (reflected in their prior academic performance) and are likely to learn more efficiently with testing and spaced learning over time. While commercial test preparation resources are ubiquitous, there is no evidence that a single resource gives students a competitive advantage on NLEs. Developing habits of regular and continuous learning is necessary for clinical practice and successful NLE performance.

Effect of Bioactive and Antimicrobial Nanoparticles on Properties and Applicability of Dental Adhesives.

The aim of the study was to examine the applicability of bioactive and antibacterial nanoparticles to an experimental adhesive. The adhesive (60 wt% BisGMA, 15 wt% TEGDMA, 25 wt% HEMA) was mixed with combinations of 5 wt% methacryl-functionalized polyhedral oligomeric silsesquioxane (MA-POSS) and one kind of bioactive/antibacterial nanoparticles: 1 wt% core-shell silica-silver nanoparticle (SiO2@Ag), 1 wt% bioactive glass with bismuth (BAG-Bi) or 1 wt% calcium phosphate (CAP). Pure adhesive served as control. The physicochemical (degree of conversion (DC), linear shrinkage (LS), shear and complex viscosity, water sorption (WS), sol fraction (SF)), biological (antimicrobial effect) and bioactive (mineral precipitation) properties were investigated. DC and LS remained unchanged. The combination of BAG-Bi/MA-POSS resulted in a significantly increased WS and SF compared to control. In addition, the combination of CAP/MA-POSS slightly increased the shear viscosity of the adhesive. The addition of the nanoparticles did not influence the antimicrobial effects compared to the pure adhesive. Improved mineral inducing capacity could be detected in all nanoparticle combinations. The combination of bioactive and/or antibacterial nanoparticles showed improved mineral inducing capacity, but no antibacterial properties. The material properties were not or only slightly affected.

Comparison of universal screening in major lynch-associated tumors: a systematic review of literature.

Lynch syndrome (LS) is associated with an increased lifetime risk of several cancers including colorectal (CRC), endometrial (EC), ovarian (OC), urinary (UT) and sebaceous tumors (ST). The benefit for universal screening in CRC and EC is well known. However, this benefit in other major lynch-associated tumors is unclear. We performed a systematic review of all published articles in the MEDLINE database between 2005 to 2017 to identify studies performing universal screening for LS in unselected CRC, EC, OC, UT and ST. All cases with MSI-H (instability in two or more markers) or missing one or more proteins on IHC testing were considered screening positive. Cases with MLH1 promoter hypermethylation or BRAF mutation positive were considered to have somatic mutations. A total of 3788 articles were identified in MEDLINE yielding 129 study arms from 113 studies. The overall pooled yield of universal LS screening and germline mismatch gene mutation was significantly different across the major LS-associated tumors (Mann Whitney test, p < 0.001). The pooled screening yield was highest in ST [52.5% (355/676), 95% CI 48.74-56.26%] followed by EC [22.65% (1142/5041), 95% CI 21.54-23.86%], CRC [11.9% (5649/47,545), 95% CI 11.61-12.19%], OC [11.29% (320/2833), 95% CI 10.13-12.47%] and UT [11.2% (31/276), 95% CI 7.48-14.92%]. ST also had the highest pooled germline positivity for mismatch repair gene mutation [18.8%, 33/176, 95%CI 13.03-24.57], followed by EC [2.6% (97/3765), 95% CI 2.09-3.11], CRC [1.8% (682/37,220), 95% CI 1.66-1.94%], UT [1.8%(3/164), 95% CI - 0.24-3.83%] and OC [0.83%(25/2983), 95% CI 0.48-1.12%]. LS screening in EC yielded significantly higher somatic mutations compared to CRC [pooled percentage 16.94% [(538/3176), 95%CI 15.60-18.20%] vs. 5.23% [(1639/26,152), 95% CI 4.93-5.47%], Mann Whitney test, p < 0.0001. Universal LS testing should be routinely performed in OC, UT and STs in addition to CRC and EC. Our findings also support consideration for IHC and somatic mutation testing before germline testing in EC due to higher prevalence of somatic mutations as well as germline testing in all patients with ST. Our results have implications for future design of LS screening programs and further studies are needed to assess the cost effectiveness and burden on genetic counselling services with expanded universal testing for LS.

The Association of Preoperative Frailty and Postoperative Delirium: A Meta-analysis.

BACKGROUND: Both frailty and postoperative delirium (POD) are common in elective surgical patients 65 years of age and older. However, the association between preoperative frailty and POD remains difficult to characterize owing to the large number of frailty and POD assessment tools used in the literature, only a few of which are validated. Furthermore, some validated frailty tools fail to provide clear score cutoffs for distinguishing frail and nonfrail patients. We performed a meta-analysis to estimate the relationship between preoperative frailty and POD. METHODS: We searched several major databases for articles that investigated the relationship between preoperative frailty and POD in patients with mean age ≥65 years who were undergoing elective, nonemergent inpatient surgery. Inclusion criteria included articles published in English no earlier than 1999. Both preoperative frailty and POD must have been measured with validated tools using clear cutoff scores for frailty and delirium. Articles were selected and data extracted independently by 2 researchers. Risk of bias (ROBINS-I) and presence of confounders were summarized. Odds ratios (ORs) for POD associated with frailty relative to nonfrailty were computed with adjusted ORs when available. Original estimates were pooled by random effects analysis. Statistical significance was set at 2-sided P < .05. RESULTS: Nine studies qualified for meta-analysis. The Fried score or a modified version of it was used in 5 studies. Frailty prevalence ranged from 18.6% to 56%. Delirium was assessed with the Confusion Assessment Method (CAM) or Confusion Assessment Method for the Intensive Care Unit (CAM-ICU) in 7 studies, Delirium Observation Scale in 1 study, and Intensive Care Delirium Screening Checklist in 1 study. The incidence of POD ranged from 7% to 56%. ROBINS-I risk of bias was low in 1 study, moderate in 4 studies, serious in 3 studies, and critical in 1 study. Random effects analysis (n = 794) of the OR for POD in frail versus nonfrail patients based on adjusted OR estimates was significant with an OR of 2.14 and a 95% confidence interval of 1.43-3.19. The I2 value was in the low range at 5.5, suggesting small variability from random effects. Funnel-plot analysis did not definitively support either the presence or absence of publication bias. CONCLUSIONS: This meta-analysis provides evidence for a significant association between preoperative frailty and POD in elective surgical patients age 65 years or older.

Mortality outcomes of patients on chronic mechanical ventilation in different care settings: A systematic review.

OBJECTIVES: To determine the outcomes of chronically ventilated patients outside the setting of intensive care units. DESIGN: Systematic review. SETTING AND PARTICIPANTS: Studies evaluating patients on chronic invasive mechanical ventilation in different care settings. METHODS: A systematic literature search of the PubMed, Embase, Cochrane Library, CINAHL (EBSCOhost), LILACS and Scopus databases from inception to March 27, 2020. Studies reporting mortality outcomes of patients ≥18 years of age on chronic invasive mechanical ventilation in intensive care units and other care settings were eligible for inclusion. RESULTS: Sixty studies were included in the systematic review. Mortality rates ranged from 13.7% to 77.8% in ICUs (n = 17 studies), 7.8%-51.0% in non-ICUs including step-down units and inpatient wards (n = 26 studies), and 12.0%-91.8% in home or nursing home settings (n = 19 studies). Age was associated with mortality in all care settings. Weaning rates ranged from 10.0% to 78.2% across non-ICU studies. Studies reporting weaning as their primary outcome demonstrated higher success rates in weaning. Home care studies reported low incidences of ventilator failure. None of the studies reported ventilator malfunction as the primary cause of death. CONCLUSIONS AND IMPLICATIONS: Mortality outcomes across various settings were disparate due to methodological and clinical heterogeneity among studies. However, there is evidence to suggest non-ICU venues of care as a comparable alternative to ICUs for stable, chronically ventilated patients, with the additional benefit of providing specialized weaning programs. By synthesizing the global data on managing chronically ventilated patients in various care settings, this study provides health care systems and providers alternative venue options for the delivery of prolonged ventilatory care in the context of limited ICU resources.

Worldwide variation in lynch syndrome screening: case for universal screening in low colorectal cancer prevalence areas.

To perform a systematic assessment of universal Lynch syndrome (LS) screening yield in colorectal cancer (CRC) patients around the world. Universal screening for LS is recommended in all CRC patients. However, the variation in yield of LS screening in the setting of significant global variation in CRC prevalence is unknown. A systematic review of articles in the MEDLINE database was performed to identify studies performing universal screening for LS. All cases with microsatellite instability (MSI-H) or missing one or more proteins on immunohistochemistry (IHC) were considered screening positive. The overall pooled yield of universal LS screening in 97 study arms from 89 identified studies was 11.9% (5649/47545) and the overall pooled percentage of confirmed LS patients was 1.8% (682/37220). LS screening positivity varied significantly based on geographic region (Kruskal Wallis test, p < 0.001) and reported 5-year CRC prevalence in the country (Fisher's exact, p < 0.001). Significant inverse correlation was found between LS screening positivity and 5-year CRC prevalence (Pearson correlation, r = - 0.56, p < 0.001). The overall yield of LS screening was 15.00% (382/2553) and rate of confirmed LS was 7.7% (113/1475) in LS screening done in patients ≤ 50 years (16 studies). There is significant geographic variation in LS screening positivity with higher yield in countries with lower prevalence of CRC. Our results highlight the importance of universal LS screening in younger patients and low CRC prevalence countries.

Rapid direct detection of pathogens for diagnosis of joint infections by MALDI-TOF MS after liquid enrichment in the BacT/Alert blood culture system.

Pathogen identification is a critical step during diagnosis of infectious diseases. Matrix-Assisted Laser Desorption/Ionization Time-Of-Flight mass spectrometry (MALDI-TOF-MS) has become the gold standard for identification of microorganisms cultured on solid media in microbiology laboratories. Direct identification of microbes from liquid specimen, circumventing the need for the additional overnight cultivation step, has been successfully established for blood culture, urine and liquor. Here, we evaluate the ability of MALDI-TOF MS for direct identification of pathogens in synovial fluid after liquid enrichment in BacT/Alert blood culture bottles. Influence of synovial specimen quality on direct species identification with the MALDI BioTyper/Sepsityper was tested with samples inoculated from pretested native synovia with concomitant inoculation of blood or pus, or highly viscous fluid. Here, we achieved >90% concordance with culture on solid medium, and only mixed-species samples posed significant problems. Performance in routine diagnostics was tested prospectively on bottles inoculated by treating physicians on ward. There, we achieved >70% concordance with culture on solid media. The major contributors to test failure were the absence of a measurable mass signal and mixed-specimen samples. The Sepsityper workflow worked well on samples derived from BacT/Alert blood culture bottles inoculated with synovial fluid, giving concordant results to identification from solid media. Host remnant material in the inoculum, such as blood or pus, had no detrimental effect on identification score values of the BioTyper system after processing with the Sepsityper workflow, and neither had the initial viscosity of the synovial sample.

Remote near infrared identification of pathogens with multiplexed nanosensors.

Infectious diseases are worldwide a major cause of morbidity and mortality. Fast and specific detection of pathogens such as bacteria is needed to combat these diseases. Optimal methods would be non-invasive and without extensive sample-taking/processing. Here, we developed a set of near infrared (NIR) fluorescent nanosensors and used them for remote fingerprinting of clinically important bacteria. The nanosensors are based on single-walled carbon nanotubes (SWCNTs) that fluoresce in the NIR optical tissue transparency window, which offers ultra-low background and high tissue penetration. They are chemically tailored to detect released metabolites as well as specific virulence factors (lipopolysaccharides, siderophores, DNases, proteases) and integrated into functional hydrogel arrays with 9 different sensors. These hydrogels are exposed to clinical isolates of 6 important bacteria (Staphylococcus aureus, Escherichia coli,…) and remote (≥25 cm) NIR imaging allows to identify and distinguish bacteria. Sensors are also spectrally encoded (900 nm, 1000 nm, 1250 nm) to differentiate the two major pathogens P. aeruginosa as well as S. aureus and penetrate tissue (>5 mm). This type of multiplexing with NIR fluorescent nanosensors enables remote detection and differentiation of important pathogens and the potential for smart surfaces.

Proposal for smoke-free public housing: a systematic review of attitudes and preferences from residents of multi-unit housing.

A policy proposal to ban public housing smoking indoors has received support, but it is unclear how certain affected groups, specifically smokers in housing units, perceive such a policy. To review the literature on attitudes and perceptions of housing unit tenants towards an indoor smoke-free housing policy, using various databases, we searched articles for attitudes towards smoking ban enforcement in housing units. We identified fourteen articles. Non-smokers heavily favored indoor policies and current smokers heavily opposed them. Current smokers represented a substantial minority in the reviewed articles, resulting in overall outcomes of the surveys driven by non-smokers. Studies investigating attitudes about housing smoking bans largely represent the views of non-smokers and lack data about barriers and concerns of tenants who do not support a smoke-free policy. Future studies should investigate if such a discrepancy impacts the efficacy of smoke-free housing policies.

Cannabinoid effects on responses to quantitative sensory testing among individuals with and without clinical pain: a systematic review.

There has been an explosion of interest in the utility of cannabinoids as potential analgesics. This systematic review critically synthesizes the evidence for cannabinoid analgesic effects on quantitative sensory testing outcomes in both healthy adults and patients with chronic noncancer pain. Our systematic review protocol is preregistered on PROSPERO (CRD42018117367). An electronic search was made in PsycINFO, Cochrane, Google Scholar, Embase, and Pubmed of all literature published until August 2018. Of the 1217 studies found from the search, a total 39 placebo-controlled studies that met the eligibility criteria were synthesized for this study. Because of substantial heterogeneity of study designs, populations, cannabinoid compounds, and quantitative sensory testing outcomes, meta-analysis was not conducted. More consistent evidence of cannabinoid analgesia was observed for inhaled cannabis than synthetic cannabinoids. Analgesic effects were most commonly observed in tests of cold pain sensitivity, and hyperalgesic effects were most commonly observed in tests of electrical stimulation. Patterns of findings from studies with healthy subjects did not substantively differ from those with chronic noncancer pain. However, these observations are qualified by the high degree of inconsistency across studies and methodological heterogeneity. We offer recommendations for future studies to improve study rigor and reproducibility.

Describing the Evidence Base for Accreditation in Undergraduate Medical Education Internationally: A Scoping Review.

PURPOSE: To summarize the state of evidence related to undergraduate medical education (UME) accreditation internationally, describe from whom and where the evidence has come, and identify opportunities for further investigation. METHOD: The authors searched Embase, ERIC, PubMed, and Scopus from inception through January 31, 2018, without language restrictions, to identify peer-reviewed articles on UME accreditation. Articles were classified as scholarship if all Glassick's criteria were met and as nonscholarship if not all were met. Author, accrediting agency, and study characteristics were analyzed. RESULTS: Database searching identified 1,379 nonduplicate citations, resulting in 203 unique, accessible articles for full-text review. Of these and with articles from hand searching added, 36 articles were classified as scholarship (30 as research) and 85 as nonscholarship. Of the 36 scholarship and 85 nonscholarship articles, respectively, 21 (58%) and 44 (52%) had an author from the United States or Canada, 8 (22%) and 11 (13%) had an author from a low- or middle-income country, and 16 (44%) and 43 (51%) had an author affiliated with a regulatory authority. Agencies from high-income countries were featured most often (scholarship: 28/60 [47%]; nonscholarship: 70/101 [69%]). Six (17%) scholarship articles reported receiving funding. All 30 research studies were cross-sectional or retrospective, 12 (40%) reported only analysis of accreditation documents, and 5 (17%) attempted to link accreditation with educational outcomes. CONCLUSIONS: Limited evidence exists to support current UME accreditation practices or guide accreditation system creation or enhancement. More research is required to optimize UME accreditation systems' value for students, programs, and society.

Women's Health Curricula in Internal Medicine Residency Programs: A Scoping Review.

Background: Despite national efforts to expand women's health education, internal medicine (IM) residents remain unprepared to provide comprehensive care to women. The objectives of this scoping review are to provide an overview of published women's health curricula in IM residency programs and to identify potential areas for improvement. Materials and Methods: Studies were identified using PubMed, Embase, Cochrane Library, Scopus, Education Resources Information Center (ERIC), Web of Science, and MedEdPORTAL. Inclusion criteria included the following: (1) women's health as defined by the authors (2) description of a curriculum (3) designed for IM residents (4) based in North America, and (5) published between 1998 and 2018. Data abstracted included content, educational and assessment methods, and quality. Descriptive analysis was used to compare data. Results: Sixteen articles met the inclusion criteria. The most common women's health topics were intimate partner violence (31%) and menopause (31%). Twelve curricula (75%) were implemented in the outpatient setting. Of the teaching methods, didactics (69%) and in-clinic teaching (44%) were most commonly used. All studies that assessed attitudes, knowledge, and/or behavior showed an improvement post-intervention. No studies evaluated patient outcomes. Conclusion: To our knowledge, this is the first review summarizing published women's health curricula in IM residency. There were a limited number of published articles describing women's health curricula. Although content varied, the curricula were effective in improving attitudes, knowledge, and/or behavior with regard to women's health topics. We encourage IM residency programs to develop and disseminate women's health curricula to inform future improvements and advancements in women's health education.

Using the visual arts to teach clinical excellence.

This article was migrated. The article was marked as recommended. Introduction: The authors conducted a review of the literature to identify curricula that incorporate the visual arts into undergraduate, graduate, and continuing medical education to facilitate the teaching of clinical excellence. Methods: The authors searched the PubMed and ERIC electronic databases in May 2017, using search terms such as "paintings," "visual arts," and "medical education," along with terms corresponding to previously defined domains of clinical excellence. Search results were reviewed to select articles published in the highest impact general medicine and medical education journals describing the use of visual arts to teach clinical excellence to all levels of medical trainees and practicing physicians. Results: Fifteen articles met inclusion criteria. Each article addressed at least one of the following clinical excellence domains: communication and interpersonal skills, humanism and professionalism, diagnostic acumen, and knowledge. No articles described the use of the visual arts to teach the skillful negotiation of the health care system, a scholarly approach to clinical practice, or a passion for patient care. Conclusions: This review supports the use of visual arts in medical education to facilitate the teaching of clinical excellence. However, research designed specifically to evaluate the impact of the visual arts on clinical excellence outcomes is needed.

Influence of proprioceptive insoles on spinal curvature in patients with slight idiopathic scoliosis.

PURPOSE: Proprioceptive insoles are known to influence the functions of posture and gait by modulations of the sensory structures at the sole of the foot. Literature has shown that they could improve the position of the upper-body in patients with postural complaints of the musculoskeletal system. The aim of this study was to evaluate the influence of proprioceptive insoles on the spinal curvature in patients with slight idiopathic scoliosis. PATIENTS AND METHODS: Eighteen patients were included in this prospective, single-centre, randomized study. All patients needed to have a relevant growth potential and suffered from a slight idiopathic scoliosis. Two groups were used, where group 1 performed physiotherapy twice a week, whereas group 2 was additionally supplied with proprioceptive insoles. Patients underwent three-dimensional rasterstereography for back-shape analysis. Furthermore, a conventional x-ray imaging of the spine was performed at the beginning and 1 year later to document the curvatures. RESULTS: There was no statistical difference in the Cobb angles, and in almost all parameters of the rasterstereography, there was no statistically significant change between and within both groups. CONCLUSION: According to the results of this study, there was no evidence of any statistical significant effect of proprioceptive insoles on spinal curvature in patients with slight idiopathic scoliosis.

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.

Posterior dynamic stabilization in the lumbar spine - 24 months results of a prospective clinical and radiological study with an interspinous distraction device.

BACKGROUND: Interspinous distraction devices (IDD) are due to maintain or restore intersegmental range of motion (iROM) in a controlled fashion with the aim of stabilization the affected level dynamically. The following study is the first to present clinical and radiological data with the Wallis® spacer during a follow-up of 24 months. METHODS: Ten patients underwent posterior dynamic stabilization (PDS) of the lumbar spine with an IDD (Wallis® spacer) and were controlled clinically and radiologically after 3, 6, 12, and 24 months in a prospective study design. Pain intensity, functional disability and life quality were assessed by use of subjective scores. Motion analyses were performed with the help of lateral functional x-rays to determine the iROM of the operated segments and total ROM (tROM) of the lumbar spine. In addition, roentgen stereophotogrammetric analysis (RSA) was used to measure the iROM of the treated levels. RESULTS: During the postoperative course pain and disability most clinical scores were significantly improved. After 24 months we observed statistically significant reduction in back pain intensity with a mean value of 6.0 on visual analog scale (VAS) before surgery and of 2.7 at the latest evaluation. The leg pain was also decreased without statistical significance from 4.7 preoperatively to 2.1 at final follow-up. The functional disability according to Oswestry Disability Index (ODI) and Roland-Morris Disability Questionnaire (RM) was decreased both with statistical significance at all examination dates with a mean value in ODI of 40.0 % before operation and of 17.3 % after 2 years and an initial mean value in RM of 55.2 and of 23.5 % after latest follow-up. After 24 months, the results of the health related quality of life score also showed much better values with only two exceptions. The iROM of the treated levels was reduced during each follow-up examination with preserved residual mobility. Directly postoperatively and after 3 and 12 months intersegmental mobility was statistically significantly decreased with an average iROM of 6.62° before operation and of 2.69° few days after surgery, of 3.79° and 3.16° 3 and 12 months later. At 6 (4.37°) and 24 (4.01°) months follow-up iROM was also but not statistically significantly reduced. The mean tROM did not change significantly during all postoperative controls. CONCLUSIONS: The radiological findings support the thesis of posterior dynamic stabilization by the used implant. The positive clinical findings should be interpreted with caution because of the limited number of patients and the missing control group.

Has overweight any influence on the effectiveness of conservative treatment in patients with low back pain?

PURPOSE: Low back pain and overweight are two relevant disabling health conditions. To date, there is a lack of information about the effectiveness of nonoperative therapy in persons with overweight and low back pain. The aim of our study was to evaluate if overweight has any influence on the effectivity of conservative treatment in patients with low back pain during a mid- to long-term time period. METHODS: 128 patients with low back pain participated in this study. All of them got an inpatient conservative treatment program. The weight status was classified according to the body mass index (BMI) in three weight groups (normal, overweight, obesity). The patients were asked to fill out a standardized questionnaire regarding self-reported pain with the visual analog scale and their disability with the Oswestry Disability Index and the Roland-Morris Disability Questionnaire at four time points (beginning and end of hospital stay and after 5 and 17 months). RESULTS: Concerning the short-term results of the three scores, we always observed an improvement of the patients' condition with statistically significant reduction of pain and disability at discharge. This was true for the total collective as well as for each of the three BMI-groups when considered separately. The pain intensity and disability were still and mostly statistically significantly decreased in the mid- to long-term follow-up. Regarding the three BMI-groups among themselves, the differences of the data in the pain and disability scores showed generally no statistical significance. CONCLUSIONS: We conclude for the first time that a conservative treatment program in patients even with chronic low back pain is effective both in a short-term and a mid- to long-term time period respectively without any significant differences between patients with a normal BMI or with overweight or obesity.