Julia S. Whelan

The Landscape of Inappropriate Laboratory Testing: A 15-Year Meta-Analysis

Background Laboratory testing is the single highest-volume medical activity and drives clinical decision-making across medicine. However, the overall landscape of inappropriate testing, which is thought to be dominated by repeat testing, is unclear. Systematic differences in initial vs. repeat testing, measurement criteria, and other factors would suggest new priorities for improving laboratory testing. Methods A multi-database systematic review was performed on published studies from 1997–2012 using strict inclusion and exclusion criteria. Over- vs. underutilization, initial vs. repeat testing, low- vs. high-volume testing, subjective vs. objective appropriateness criteria, and restrictive vs. permissive appropriateness criteria, among other factors, were assessed. Results Overall mean rates of over- and underutilization were 20.6% (95% CI 16.2–24.9%) and 44.8% (95% CI 33.8–55.8%). Overutilization during initial testing (43.9%; 95% CI 35.4–52.5%) was six times higher than during repeat testing (7.4%; 95% CI 2.5–12.3%; P for stratum difference <0.001). Overutilization of low-volume tests (32.2%; 95% CI 25.0–39.4%) was three times that of high-volume tests (10.2%; 95% CI 2.6–17.7%; P<0.001). Overutilization measured according to restrictive criteria (44.2%; 95% CI 36.8–51.6%) was three times higher than for permissive criteria (12.0%; 95% CI 8.0–16.0%; P<0.001). Overutilization measured using subjective criteria (29.0%; 95% CI 21.9–36.1%) was nearly twice as high as for objective criteria (16.1%; 95% CI 11.0–21.2%; P = 0.004). Together, these factors explained over half (54%) of the overall variability in overutilization. There were no statistically significant differences between studies from the United States vs. elsewhere (P = 0.38) or among chemistry, hematology, microbiology, and molecular tests (P = 0.05–0.65) and no robust statistically significant trends over time. Conclusions The landscape of overutilization varies systematically by clinical setting (initial vs. repeat), test volume, and measurement criteria. Underutilization is also widespread, but understudied. Expanding the current focus on reducing repeat testing to include ordering the right test during initial evaluation may lead to fewer errors and better care.

Therapeutic Intervention for Chronic Prostatitis/Chronic Pelvic Pain Syndrome (CP/CPPS): A Systematic Review and Meta-Analysis

Background Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) has been treated with several different interventions with limited success. This meta-analysis aims to review all trials reporting on therapeutic intervention for CP/CPPS using the National Institutes of Health-Chronic Prostatitis Symptom Index (NIH-CPSI). Methods We searched Medline, PubMed, the Cochrane Pain, Palliative & Supportive Care Trials, the Cochrane Register of Controlled Trials, CINAHL, ClinicalTrials.gov, and the NIDDK website between 1947 and December 31, 2011 without language or study type restrictions. All RCTs for CP/CPPS lasting at least 6 weeks, with a minimum of 10 participants per arm, and using the NIH-CPSI score, the criterion standard for CP/CPPS, as an outcome measure were included. Data was extracted from each study by two independent reviewers. Gillbraith and I-squared plots were used for heterogeneity testing and Eggers and Peters methods for publication bias. Quality was assessed using a component approach and meta-regression was used to analyze sources of heterogeneity. Results Mepartricin, percutaneous tibial nerve stimulation (PTNS), and triple therapy comprised of doxazosin + ibuprofen + thiocolchicoside (DIT) resulted in clinically and statistically significant reduction in NIH-CPSI total score. The same agents and aerobic exercise resulted in clinically and statistically significant NIH-CPSI pain domain score reduction. Acupuncture, DIT, and PTNS were found to produce statistically and clinically significant reductions in the NIH-CPSI voiding domain. A statistically significant placebo effect was found for all outcomes and time analysis showed that efficacy of all treatments increased over time. Alpha-blockers, antibiotics, and combinations of the two failed to show statistically or clinically significant NIH-CPSI reductions. Conclusion Results from this meta-analysis reflect our current inability to effectively manage CP/CPPS. Clinicians and researchers must consider placebo effect and treatment efficacy over time and design studies creatively so we can more fully elucidate the etiology and role of therapeutic intervention in CP/CPPS.

50 years of publication in the field of medical education

Background: The advent of new medical education (ME) journals makes evident the growth of the field of ME. However, the nature and context of growth is undefined. Aim: To analyze the evolution of publication in ME. Methods: MEDLINE retrieval using medical subject headings was used to analyze patterns of ME publications from 1960–2010: changes in number of ME publications; number of journals publishing ME articles; co-topics occurring frequently in ME articles; differences among journals’ publication of co-topics. Results: Annual publication of ME articles increased from 279 in 1960 to 3760 in 2010. 81 531 articles were published in 4208 different journals. 104 journals published ME articles in 1960, 855 in 2010. Despite an increase in journals in all fields, ME journals now account for a larger proportion of all journals indexed in MEDLINE than in 1960. One-quarter of all ME articles were indexed as internship/residency; 16% as graduate ME; 15% as undergraduate ME; and 14% as continuing ME. The five journals that published the most ME articles distinguished themselves by publishing some topics with greater or less frequency. Conclusions: The increase in the number of ME publications and in the number of journals publishing ME articles suggests a supportive environment for a growing field; but variation in journals’ foci has implications for readers, editors and authors.

Procedural instruction in invasive bedside procedures: a systematic review and meta-analysis of effective teaching approaches

Importance Optimal approaches to teaching bedside procedures are unknown. Objective To identify effective instructional approaches in procedural training. Data sources We searched PubMed, EMBASE, Web of Science and Cochrane Library through December 2014. Study selection We included research articles that addressed procedural training among physicians or physician trainees for 12 bedside procedures. Two independent reviewers screened 9312 citations and identified 344 articles for full-text review. Data extraction and synthesis Two independent reviewers extracted data from full-text articles. Main outcomes and measures We included measurements as classified by translational science outcomes T1 (testing settings), T2 (patient care practices) and T3 (patient/public health outcomes). Due to incomplete reporting, we post hoc classified study outcomes as ‘negative’ or ‘positive’ based on statistical significance. We performed meta-analyses of outcomes on the subset of studies sharing similar outcomes. Results We found 161 eligible studies (44 randomised controlled trials (RCTs), 34 non-RCTs and 83 uncontrolled trials). Simulation was the most frequently published educational mode (78%). Our post hoc classification showed that studies involving simulation, competency-based approaches and RCTs had higher frequencies of T2/T3 outcomes. Meta-analyses showed that simulation (risk ratio (RR) 1.54 vs 0.55 for studies with vs without simulation, p=0.013) and competency-based approaches (RR 3.17 vs 0.89, p<0.001) were effective forms of training. Conclusions and relevance This systematic review of bedside procedural skills demonstrates that the current literature is heterogeneous and of varying quality and rigour. Evidence is strongest for the use of simulation and competency-based paradigms in teaching procedures, and these approaches should be the mainstay of programmes that train physicians to perform procedures. Further research should clarify differences among instructional methods (eg, forms of hands-on training) rather than among educational modes (eg, lecture vs simulation).

Tropical American Plants in the Treatment of Infectious Diseases

The increasingly diverse U.S. immigrant populations and the growing use of medicinal herbs create a need for health care professionals to expand their knowledge in this area. This is a review of tropical plants, Annona Muricata, Artemisia absinthium, Cinchona officinalis, Illicium verum, Momordica charantia, Opuntia streptacantha, Schinus terebinthifolius, and Tabebuia avellanedae (impetiginosa), commonly used by Latino and Haitian populations for the treatment of infectious disease. All the eight plants discussed here have one or more of the following: antibacterial, antiviral, antifungal, or antiparasitic properties. All of these plants are primarily known and used in the tropical region, but they are also readily available for purchase in the United States, specifically in the ethnic markets. This review discusses their traditional uses, chemical constituents, proven scientific evidence, and toxicities.

Views of Pediatric Health Care Providers on the Use of Herbs and Dietary Supplements in Children

Herbs and dietary supplements (HDS) are widely used by adults for treating illnesses and/or preserving good health, and many parents use HDS for their children as well. Previous reports suggest parents will not divulge HDS use to health care providers for fear of their skepticism or disapproval. Yet the views of pediatric health care providers on HDS use in children are not well known. This study investigated the attitudes and practices of pediatric nurses and physicians regarding HDS use in children, in order to identify those characteristics associated with a high degree of confidence in initiating a dialogue on the topic of HDS with families in their practice. A written survey on attitudes and practices toward HDS was developed, piloted, revised, and then administered to a convenience sample of practitioners attending a regional postgraduate course in general pediatrics. Only 42% of 204 pediatric health care providers sampled felt confident in initiating discussions about the therapeutic use of herbs and dietary supplements with families in their practice. Confidence in discussing HDS with families correlated with both personal use of an HDS (OR 3.22; p=0.033) and length of time in practice less than 10 years (OR 8.26; p=0.007). Less than 18% felt that HDS were safe for children under 6 months of age; and only 35% felt they were safe for use in children < 24 months old. Only 7% felt that parents should be allowed to give their hospitalized child an herb or dietary supplement they had brought with them from home, although this increased to 35% if the herb or dietary supplement had been prescribed by a physician. Ninety-two percent of practitioners thought that HDS should be more closely regulated by the FDA. Only a minority of pediatric community practitioners felt confident in discussing HDS with families of children in their practice. Those who had been in practice for a shorter time and who had used HDS themselves were more likely to report confidence in initiating such discussions. The provision of more postgraduate educational opportunities to learn about herbs and dietary supplements may alleviate some practitioners’ concerns about their own competency in discussing HDS with families in their practice.

Pain and Temporomandibular Disorders: A Pharmaco-Gender Dilemma

Gender is the biggest risk factor in the development of temporomandibular disorders (TMD) and orofacial pain. Gender differences in pain thresholds, temporal summation, pain expectations, and somatic awareness exist in patients with chronic TMD or orofacial pain. There are gender differences in pharmacokenetics and pharmacodynamics of medications used to treat pain. A better understanding of the mechanisms that contribute to the increased incidence and persistence of chronic pain in females is needed. Future research will elucidate the sex effects on factors that protect against developing pain or prevent debilitating pain. Gender-based treatments for TMD and orofacial pain treatment will evolve from the translational research stimulated by this knowledge.

Assessing Strength of Evidence of Appropriate Use Criteria for Diagnostic Imaging Examinations

OBJECTIVE For health information technology tools to fully inform evidence-based decisions, recommendations must be reliably assessed for quality and strength of evidence. We aimed to create an annotation framework for grading recommendations regarding appropriate use of diagnostic imaging examinations. METHODS The annotation framework was created by an expert panel (clinicians in three medical specialties, medical librarians, and biomedical scientists) who developed a process for achieving consensus in assessing recommendations, and evaluated by measuring agreement in grading the strength of evidence for 120 empirically selected recommendations using the Oxford Levels of Evidence. RESULTS Eighty-two percent of recommendations were assigned to Level 5 (expert opinion). Inter-annotator agreement was 0.70 on initial grading (κ = 0.35, 95% CI, 0.23-0.48). After systematic discussion utilizing the annotation framework, agreement increased significantly to 0.97 (κ = 0.88, 95% CI, 0.77-0.99). CONCLUSIONS A novel annotation framework was effective for grading the strength of evidence supporting appropriate use criteria for diagnostic imaging exams.

Efficacy of Treatments for Opioid-Induced Constipation: Systematic Review and Meta-analysis

Background & Aims Opioid‐induced constipation (OIC) is a common problem in patients on chronic opioid therapy for cancer‐related and non–cancer‐related pain. Approved treatments for OIC are methylnaltrexone, naloxone, naloxegol, alvimopan, naldemedine, and lubiprostone. Since a meta‐analysis performed in 2014, 2 new agents have been approved by the Food and Drug Administration for treatment of OIC (naloxegol and naldemedine). Methods We conducted a search of the medical literature following the protocol outlined in the Cochrane Handbook for systematic review. We searched MEDLINE, EMBASE, EMBASE Classic, Web of Science, and the Cochrane Central Register of Controlled Trials until March 2017 to identify randomized controlled trials of peripheral &mgr;‐opioid–receptor antagonists (methylnaltrexone, naloxone, naloxegol, alvimopan, axelopran, or naldemedine), lubiprostone, or prucalopride. Response to therapy was extracted in a dichotomous assessment as an overall response to therapy. The effect of pharmacologic therapies was pooled and reported as a relative risk (RR) of failure to respond to the treatment drug, with 95% CIs. Results We included 27 placebo‐controlled trials in our meta‐analysis (23 trials evaluated &mgr;‐opioid–receptor antagonists, 3 trials evaluated lubiprostone, and 1 trial evaluated prucalopride). In these trials, 5390 patients received a drug and 3491 received a placebo. Overall, &mgr;‐opioid–receptor antagonists, lubiprostone, and prucalopride were superior to placebo for the treatment of OIC, with a RR of failure to respond to therapy of 0.70 (95% CI, 0.64–0.75) and an overall number needed to treat of 5 (95% CI, 4–7). When restricted to only Food and Drug Administration–approved medications for OIC, the RR of failure to respond to therapy was 0.69 (95% CI, 0.62‐0.77), with a number needed to treat of 5 (95% CI, 4–7). Sensitivity analyses and meta‐regression performed to account for heterogeneity showed that treatment was more likely to be effective in study populations taking higher doses of opiates at baseline or refractory to laxatives. Study duration and prespecified primary outcome did not affect the RR of failure. Participants who received &mgr;‐opioid–receptor antagonists were significantly more likely to have diarrhea, abdominal pain, nausea, or vomiting than patients who received placebo. Conclusions In a systematic review and meta‐analysis, we found &mgr;‐opioid–receptor antagonists to be safe and effective for the treatment of OIC. Prescription‐strength laxatives (prucalopride, lubiprostone) are slightly better than placebo in reducing OIC.

A systematic review of adenosine triphosphate as a surrogate for bacterial contamination of duodenoscopes used for endoscopic retrograde cholangiopancreatography

HighlightsThis systematic review identified 10 studies with concomitant ATP and culture samples.Four studies quantified the relationship between these methods and found poor correlation.A decrease in ATP measurements was seen after each reprocessing stage.ATP does not effectively substitute for culture surveillance of duodenoscopes.ATP may be an indicator of the quality of manual cleaning. Background: Bacterial culture is the accepted standard to measure the adequacy of high‐level disinfection (HLD) of duodenoscopes. Adenosine triphosphate (ATP) bioluminescence assays have been suggested as an alternative method of evaluating the quality of reprocessing. We systematically reviewed published research describing the correlation between ATP and bacterial cultures. Methods: The primary outcome was the correlation or concordance between concomitantly sampled ATP and bacterial contamination obtained from the instrument channel and/or elevator mechanism of the duodenoscope. A secondary outcome included the reduction in ATP measurements between paired samples before and after stages of duodenoscope reprocessing. Results: Ten studies were included in the analysis. Four studies reported the relationship between concomitantly sampled ATP and cultures. Three studies reported receiver operating characteristic curves (1 study additionally reported a Wilcoxon rank sum test), and 1 study reported Spearman correlation coefficients and paired dichotomous measurements of ATP and bacterial contamination. All analyses suggested a poor relationship between the 2 measures. Studies measuring ATP before and after manual cleaning and before and after HLD reported a reduction in ATP after the reprocessing stage. Conclusion: Current research does not support the direct substitution of ATP for bacterial culture surveillance of duodenoscopes. Serial ATP measurement may be a useful tool to evaluate the adequacy of manual cleaning and for training of endoscopic reprocessing staff.