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Excessive opioid prescribing after surgery has contributed to the current opioid crisis; however, the value of prescribing opioids at surgical discharge remains uncertain. We aimed to estimate the extent to which opioid prescribing after discharge affects self-reported pain intensity and adverse events in comparison with an opioid-free analgesic regimen.In this systematic review and meta-analysis, we searched MEDLINE, Embase, the Cochrane Library, Scopus, AMED, Biosis, and CINAHL from Jan 1, 1990, until July 8, 2021. We included multidose randomised controlled trials comparing opioid versus opioid-free analgesia in patients aged 15 years or older, discharged after undergoing a surgical procedure according to the Physiological and Operative Severity Score for the Enumeration of Mortality and Morbidity definition (minor, moderate, major, and major complex). We screened articles, extracted data, and assessed risk of bias (Cochrane's risk-of-bias tool for randomised trials) in duplicate. The primary outcomes of interest were self-reported pain intensity on day 1 after discharge (standardised to 0-10 cm visual analogue scale) and vomiting up to 30 days. Pain intensity at further timepoints, pain interference, other adverse events, risk of dissatisfaction, and health-care reutilisation were also assessed. We did random-effects meta-analyses and appraised evidence certainty using the Grading of Recommendations, Assessment, Development, and Evaluations scoring system. The review was registered with PROSPERO (ID CRD42020153050).47 trials (n=6607 patients) were included. 30 (64%) trials involved elective minor procedures (63% dental procedures) and 17 (36%) trials involved procedures of moderate extent (47% orthopaedic and 29% general surgery procedures). Compared with opioid-free analgesia, opioid prescribing did not reduce pain on the first day after discharge (weighted mean difference 0·01cm, 95% CI -0·26 to 0·27; moderate certainty) or at other postoperative timepoints (moderate-to-very-low certainty). Opioid prescribing was associated with increased risk of vomiting (relative risk 4·50, 95% CI 1·93 to 10·51; high certainty) and other adverse events, including nausea, constipation, dizziness, and drowsiness (high-to-moderate certainty). Opioids did not affect other outcomes.Findings from this meta-analysis support that opioid prescribing at surgical discharge does not reduce pain intensity but does increase adverse events. Evidence relied on trials focused on elective surgeries of minor and moderate extent, suggesting that clinicians can consider prescribing opioid-free analgesia in these surgical settings. Data were largely derived from low-quality trials, and none involved patients having major or major-complex procedures. Given these limitations, there is a great need to advance the quality and scope of research in this field.The Canadian Institutes of Health Research.

The aim of this systematic review was to assess dysregulated miRNA biomarkers in coronary artery disease (CAD). Dysregulated microRNA (miRNAs) have been shown to be linked to cardiovascular pathologies including CAD and may have utility as diagnostic and prognostic biomarkers. We compared miRNAs identified in acute coronary syndrome (ACS) compared with stable CAD and control populations. We conducted a systematic search of controlled vocabulary and free text terms related to ACS, stable CAD and miRNA in Biosis Previews (OvidSP), The Cochrane Library (Wiley), Embase (OvidSP), Global Health (OvidSP), Medline (PubMed and OvidSP), Web of Science (Clarivate Analytics), and ClinicalTrials.gov which yielded 7370 articles. Of these, 140 original articles were appropriate for data extraction. The most frequently reported miRNAs in any CAD (miR-1, miR-133a, miR-208a/b, and miR-499) are expressed abundantly in the heart and play crucial roles in cardiac physiology. In studies comparing ACS cases with stable CAD patients, miR-21, miR-208a/b, miR-133a/b, miR-30 family, miR-19, and miR-20 were most frequently reported to be dysregulated in ACS. While a number of miRNAs feature consistently across studies in their expression in both ACS and stable CAD, when compared with controls, certain miRNAs were reported as biomarkers specifically in ACS (miR-499, miR-1, miR-133a/b, and miR-208a/b) and stable CAD (miR-215, miR-487a, and miR-502). Thus, miR-21, miR-133, and miR-499 appear to have the most potential as biomarkers to differentiate the diagnosis of ACS from stable CAD, especially miR-499 which showed a correlation between the level of their concentration gradient and myocardial damage. Although these miRNAs are potential diagnostic biomarkers, these findings should be interpreted with caution as the majority of studies conducted predefined candidate-driven assessments of a limited number of miRNAs (PROSPERO registration: CRD42017079744).

Laparoscopic suturing (LS) has become a common technique used in a variety of advanced laparoscopic procedures. However, LS is a challenging skill to master, and many trainees may not be competent in performing LS at the end of their training. The purpose of this review is to identify simulation platforms available for assessment of LS skills, and determine the characteristics of the platforms and the LS skills that are targeted. A scoping review was conducted between January 1997 and October 2018 for full-text articles. The search was done in various databases. Only articles written in English or French were included. Additional studies were identified through reference lists. The search terms included “laparoscopic suturing” and “clinical competence.” Sixty-two studies were selected. The majority of the simulation platforms were box trainers with inanimate tissue, and targeted basic suturing and intracorporeal knot-tying techniques. Most of the validation came from internal structure (rater reliability) and relationship to other variables (compare training levels/case experience, and various metrics). Consequences were not addressed in any of the studies. We identified many types of simulation platforms that were used for assessing LS skills, with most being for assessment of basic skills. Platforms assessing the competence of trainees for advanced LS skills were limited. Therefore, future research should focus on development of LS tasks that better reflect the needs of the trainees.

Background Exercise-based interventions have become part of the standard of care in rehabilitation programs for cardiovascular risk reduction and the promotion of a healthy lifestyle. The systematic review describes the current state of knowledge of the effects of preoperative exercise training (prehabilitation) on perioperative clinical outcomes in patients undergoing cardiac and vascular interventions. Methods Studies were systematically searched within 14 databases from inception to October 2016. Only studies that assessed a preoperative exercise program in adult patients undergoing cardiac or vascular interventions with clinical or patient-centered endpoints were included in the review. Two independent reviewers selected studies for inclusion, extracted data, and assessed quality using Cochrane Collaboration's tool for RCTs11111111111111111 and ROBINS-I tool for nonrandomized studies. Results Nine studies met our inclusion criteria and were stratified for qualitative analyses by cardiac (n = 7) and vascular (n = 2) procedures. Prehabilitation was associated with decreased length of stay, reduced postoperative complications, improved objective physical functioning, and improved subjective quality of life (SF-36 physical and mental health domains) measures in patients undergoing cardiac and vascular procedures. Given the amount of heterogeneity that was present in the designs, populations, and comparators among the included studies, we were unable to statistically pool data across trials. Conclusions Our qualitative findings suggest that prehabilitation may improve clinical outcomes, physical performance, and health-related quality-of-life measures in patients undergoing cardiac and vascular surgery procedures.

Postoperative ileus (POI) is regarded as the most clinically significant morbidity following loop ileostomy closure; however, its incidence remains poorly understood. Our objective was therefore to determine the pooled incidence of POI after loop ileostomy closure and identify risk factors associated with its development. We systematically searched MEDLINE (via Ovid and PubMed), Embase, the Cochrane Library, Biosis Previews, and Scopus to identify studies reporting the incidence of POI in patients who underwent loop ileostomy closure. Two independent reviewers extracted data and appraised study quality. Cumulative incidence proportions were pooled across studies using a random-effects meta-analytic model. Sixty-seven studies, including 9528 patients, met our inclusion criteria. The pooled estimate of POI was 8.0% (95% CI 6.9–9.3%; I2 = 74%). The estimated incidence varied by POI definition: studies with a robust definition of POI (n = 8) demonstrated the highest estimate of POI (12.4%, 95% CI 9.2–16.5%; I2 = 79%) while studies that did not report an explicit POI definition (n = 38) demonstrated the lowest estimate (6.7%, 95% CI 5.3–8.3%; I2 = 61%). Small bowel anastomosis technique (hand-sewn) and interval time from ileostomy creation to closure (longer time) were the factors most commonly associated with POI after loop ileostomy closure. However, most comparative studies were not powered to examine risk factors for POI. POI is an important complication after loop ileostomy closure, and its incidence is dependent on its definition. More research aimed at studying this complication is required to better understand risk factors for POI after loop ileostomy closure.

Operative skills correlate with patient outcomes, yet at the completion of training or after learning a new procedure, these skills are rarely formally evaluated. There is interest in the use of summative video assessment of laparoscopic benign foregut and hiatal surgery (LFS). If this is to be used to determine competency, it must meet the robust criteria established for high-stakes assessments. The purpose of this review is to identify tools that have been used to assess performance of LFS and evaluate the available validity evidence for each instrument. A systematic search was conducted up to July 2017. Eligible studies reported data on tools used to assess performance in the operating room during LFS. Two independent reviewers considered 1084 citations for eligibility. The characteristics and testing conditions of each assessment tool were recorded. Validity evidence was evaluated using five sources of validity (content, response process, internal structure, relationship to other variables, and consequences). There were six separate tools identified. Two tools were generic to laparoscopy, and four were specific to LFS [two specific to Nissen fundoplication (NF), one heller myotomy (HM), and one paraesophageal hernia repair (PEH)]. Overall, only one assessment was supported by moderate evidence while the others had limited or unknown evidence. Validity evidence was based mainly on internal structure (all tools reporting reliability and item analysis) and content (two studies referencing previous papers for tool development in the context of clinical assessment, and four listing items without specifying the development procedures). There was little or no evidence supporting test response process (one study reporting rater training), relationship to other variables (two comparing scores in subjects with different clinical experience), and consequences (no studies). Two tools were identified to have evidence for video assessment, specific to NF. There is limited evidence supporting the validity of assessment tools for laparoscopic foregut surgery. This precludes their use for summative video-based assessment to verify competency. Further research is needed to develop an assessment tool designed for this purpose.

Background Trauma registries (TR) provide invaluable data, informing resource allocation and quality improvement. The purpose of this systematic review was to identify factors promoting and inhibiting successful TR implementation in low- and middle-income countries (LMICs). Methods The protocol was registered a priori (CRD42017058586). With librarian oversight, a peer-reviewed search strategy was developed. Adhering to PRISMA guidelines, two independent reviewers performed first-screen and full-text screening. Studies describing implementation of a TR in LMICs or reviewed the experience of registry users/implementers were included. Extracted data, focusing on publication, institution, registry and data factors, was summarized using descriptive statistics and subjected to thematic qualitative analysis. Results Out of 3842 screened references, 40 articles were included for analysis. Most registries were paper-based, implemented in single publicly-funded institutions within LMICs, benefited from funding, and were run by untrained house-staff with other clinical responsibilities. Constituent variables, injury scoring, outcome assessment, and quality assurance practices were very diverse. Principal obstacles to successful implementation were lack of funding, significant missing data, and insufficient resources. Conclusions This work may contribute to the planning of future efforts towards TR implementation in LMICs, where better injury data has the potential to alleviate the morbidity and mortality associated with trauma through advocacy and quality-improvement.

Background Alvimopan is a Food and Drug Administration–approved treatment to accelerate gastrointestinal recovery after abdominal surgery; however, benefits may vary across different procedures and contexts of care. The purpose of this study is to summarize the evidence regarding the effect of alvimopan on postoperative outcomes after abdominal surgery. Methods Major databases (Medline, Embase, Biosis, Cochrane, Web of Science, and Scopus) were searched for randomized controlled trials and nonrandomized studies comparing alvimopan versus control. Risk of bias was assessed using Cochrane’s risk of bias tool 2.0 (for randomized controlled trials) and Risk of Bias in Nonrandomized Studies-of Intervention tool (for nonrandomized studies). Results were appraised descriptively as heterogeneity in reporting and risk of bias hindered meta-analysis. Quality of evidence across different surgical procedures and contexts of care (ie, open versus minimally invasive surgery, traditional care versus enhanced recovery pathway) was evaluated using Grading of Recommendations Assessment, Development, and Evaluation. Results Nine randomized controlled trials and 35 nonrandomized studies were identified. Evidence of low to moderate certainty supports that alvimopan reduces length of stay and improves gastrointestinal recovery after open bowel resection and open radical cystectomy. Limited evidence supports alvimopan for surgeries not listed in Food and Drug Administration labels (ie, total abdominal hysterectomy and retroperitoneal lymph node dissection). Similar effects were observed in traditional and enhanced recovery pathway settings, but enhanced recovery pathway elements varied across studies. There is very low certainty of evidence supporting alvimopan for patients undergoing minimally invasive surgery. Conclusion Evidence supports that alvimopan improves outcomes after open bowel resection and open radical cystectomy. Benefits for patients undergoing minimally invasive surgery and treated in contemporary enhanced recovery pathway settings remain uncertain. These findings contribute important new knowledge to inform evidence-based alvimopan prescribing.

IntroductionExcessive prescribing after surgery has contributed to a public health crisis of opioid addiction and overdose in North America. However, the value of prescribing opioids to manage postoperative pain after surgical discharge remains unclear. We propose a systematic review and meta-analysis to assess the extent to which opioid analgesia impact postoperative pain intensity and adverse events in comparison to opioid-free analgesia in patients discharged after surgery.Methods and analysisMajor electronic databases (MEDLINE, Embase, Cochrane Library, Scopus, AMED, BIOSIS, CINAHL and PsycINFO) will be searched for multi-dose randomised-trials examining the comparative effectiveness of opioid versus opioid-free analgesia after surgical discharge. Studies published from January 1990 to July 2019 will be targeted, with no language restrictions. The search will be re-run before manuscript submission to include most recent literature. We will consider studies involving patients undergoing minor and major surgery. Teams of reviewers will, independently and in duplicate, assess eligibility, extract data and evaluate risk of bias. Our main outcomes of interest are pain intensity and postoperative vomiting. Study results will be pooled using random effects models. When trials report outcomes for a common domain (eg, pain intensity) using different scales, we will convert effect sizes to a common standard metric (eg, Visual Analogue Scale). Minimally important clinical differences reported in previous literature will be considered when interpreting results. Subgroup analyses defined a priori will be conducted to explore heterogeneity. Risk of bias will be assessed according to the Cochrane Collaboration's Risk of Bias Tool 2.0. The quality of evidence for all outcomes will be evaluated using the GRADE rating system.Ethics and disseminationEthical approval is not required since this is a systematic review of published studies. Our results will be published in a peer-reviewed journal and presented at relevant conferences. Further knowledge dissemination will be sought via public and patient organisations focussed on pain and opioid-related harms.

BACKGROUND: We assessed the comparative efficacy of different dysplasia detection techniques in patients with ulcerative colitis (UC) through a network meta-analysis and rated the quality of evidence using GRADE approach. METHODS: Through a systematic literature review of multiple databases through June 30, 2017, we identified parallel-group randomized controlled trials (RCTs) in adults with long-standing UC undergoing surveillance colonoscopy with standard definition-white light endoscopy (SD-WLE), high-definition WLE (HD-WLE), narrow band imaging (NBI), or dye-based chromoendoscopy. The primary outcome was the total number of dysplastic lesions. Pairwise and network meta-analysis was performed; ranking was assessed using surface under the cumulative ranking (SUCRA) probabilities. RESULTS: Based on 8 parallel-group RCTs (924 patients), low-quality evidence supports chromoendoscopy over SD-WLE (odds ratio [OR], 2.37; 95% credible interval [CrI], 0.81-6.94) for any dysplasia detection, whereas very low-quality evidence supports using HD-WLE or NBI over SD-WLE (HD-WLE [vs SD-WLE]: OR, 1.21; 95% CrI, 0.30-4.85; NBI: OR, 1.68; 95% CrI, 0.54-5.22). Very low-quality evidence from indirect comparative analysis supports the use of chromoendoscopy over HD-WLE (OR, 1.96; 95% CrI, 0.72-5.34) or NBI (OR, 1.41; 95% CrI, 0.70-2.84) for any dysplasia detection. The number of patients with advanced neoplasia was very small, precluding meaningful analysis. CONCLUSIONS: Although we did not find any single technique to be superior, chromoendoscopy is probably more effective than SD-WLE for detecting any dysplasia, and there is low confidence in estimates supporting its use over HD-WLE or NBI. There is very low-quality evidence to inform the comparative efficacy of these interventions in detecting advanced neoplasia or preventing future colorectal cancer. Pragmatic, parallel-group RCTs with longitudinal follow-up are warranted to inform optimal dysplasia surveillance techniques. 10.1093/ibd/izy188_video1izy188.video15789702674001. ispartof: INFLAMMATORY BOWEL DISEASES vol:24 issue:12 pages:2518-2526 ispartof: location:England status: published

Background Pediatric surgical randomized clinical trials (RCTs) are labor-intensive and costly. This systematic review investigated patient accrual and estimates of study duration in RCTs by interrogating enrollment and registration practices. Methods We performed a peer-review search of multiple databases from 2000 to 2016 evaluating RCTs salient to the field with inclusion mandated that a self-identified pediatric surgeon be listed as an author. Trial registries were also searched. RCTs were appraised, and predictors of success were evaluated using multivariate logistic regression, with success defined as achievement of recruitment objectives. Results After screening, 137 RCTs were analyzed. Mean Jadad score was 1.80 (median=2). CONSORT scores ranged between 17% and 97% (median=58%). Sixty-seven studies described sample-size determination, 49 reported projected enrollment, and 26 were successful. Among 26 registered RCTs, 15 disclosed their expected completion date, which was achieved by 8. On average, protocols underwent 3.42 iterations. 9% of trials were terminated before completion, most commonly owing to poor recruitment. Trial registration and urgent cases significantly predicted success on multivariable analysis (p Conclusion Overall quality of reporting in pediatric surgical trials is poor. Sample-size calculation and patient accrual are frequently poorly performed or underestimated, resulting in trial overrun and/or premature termination. These data may help inform subsequent study design and facilitate successful completion. Level of Evidence Level III—Systematic Review and Observational (Case–Control) Analysis.

To appraise the level of evidence supporting the measurement properties of patient-reported outcome measures (PROMs) in the context of postoperative recovery after abdominal surgery.There is growing interest in using PROMs to support value-based care in abdominal surgery; however, to draw valid conclusions regarding patient-reported outcomes data, PROMs with robust measurement properties are required.Eight databases (MEDLINE, EMBASE, Biosis, PsycINFO, The Cochrane Library, CINAHL, Scopus, Web of Science) were searched for studies focused on the measurement properties of PROMs in the context of recovery after abdominal surgery. The methodological quality of individual studies was evaluated using the consensus-based COSMIN checklist. Evidence supporting the measurement properties of each PROM was synthetized according to standardized criteria and compared against the International Society of Quality of Life Research minimum standards for the selection of PROMs for outcomes research.We identified 35 studies evaluating 22 PROMs [12 focused on nonspecific surgical populations (55%), 4 focused on abdominal surgery (18%), and 6 generic PROMs (27%)]. The great majority of the studies (74%) received only poor or fair quality ratings. Measurement properties of PROMs were predominantly supported by limited or unknown evidence. None of the PROMs fulfilled International Society of Quality of Life Research's minimum standards, hindering specific recommendations.There is very limited evidence supporting the measurement properties of existing PROMs used in the context of recovery after abdominal surgery. This precludes the use of these PROMs to support value-based surgical care. Further research is required to bridge this major knowledge gap.International Prospective Register of Systematic Reviews (PROSPERO): CRD42014014349.

Background The benefits of trauma registries have been well described. The crucial data they provide may guide injury prevention strategies, inform resource allocation, and support advocacy and policy. This has been shown to reduce trauma-related mortality in various settings. Trauma remains a leading cause of mortality in low- and middle-income countries (LMICs). However, the implementation of trauma registries in LMICs can be challenging due to lack of funding, specialized personnel, and infrastructure. This study explores strategies for successful trauma registry implementation in LMICs. Methods The protocol was registered a priori (CRD42017058586). A peer-reviewed search strategy of multiple databases will be developed with a senior librarian. As per PRISMA guidelines, first screen of references based on abstract and title and subsequent full-text review will be conducted by two independent reviewers. Disagreements that cannot be resolved by discussion between reviewers shall be arbitrated by the principal investigator. Data extraction will be performed using a pre-defined data extraction sheet. Finally, bibliographies of included articles will be hand-searched. Studies of any design will be included if they describe or review development and implementation of a trauma registry in LMICs. No language or period restrictions will be applied. Summary statistics and qualitative meta-narrative analyses will be performed. Discussion The significant burden of trauma in LMIC environments presents unique challenges and limitations. Adapted strategies for deployment and maintenance of sustainable trauma registries are needed. Our methodology will systematically identify recommendations and strategies for successful trauma registry implementation in LMICs and describe threats and barriers to this endeavor. Systematic review registration The protocol was registered on the PROSPERO international prospective register of systematic reviews (CRD42017058586). Electronic supplementary material The online version of this article (10.1186/s13643-018-0700-2) contains supplementary material, which is available to authorized users.

Women with prior hypertensive disorders of pregnancy (HDP) are at twice the risk of cardiovascular disease compared with women with prior normotensive pregnancy, possibly because of sustained vascular dysfunction after delivery. The aim of this systematic review and meta-analysis is to summarize evidence of vascular dysfunction at least 3 months after HDP. Articles in all languages were retrieved from principal databases. Studies included were observational, with HDP as the main exposure and measurements of vascular dysfunction via imaging modalities or serum biomarkers as the main outcome, assessed at least 3 months postpartum. We pooled results of modalities reported in >3 studies using a random effects model. Of 6109 potentially relevant studies, 72 were included that evaluated 10 imaging modalities and 11 serum biomarkers in 8702 women. There was evidence of vascular dysfunction in women post HDP compared with women with prior normal pregnancy when measured by carotid-femoral pulse wave velocity (0.64 m/s [0.17–1.11]), carotid intima–media thickness (0.025 mm [0.004–0.045]), and augmentation index (5.48% [1.58–9.37]), as well as mean levels of soluble fms-like tyrosine kinase (6.12 pg/mL [1.91–10.33]). Between-groups differences in measures of vascular dysfunction were more pronounced when assessments were performed in younger women (

Objective Benzodiazepines are often recommended first-line for management of cocaine and amphetamine toxicity while antipsychotic treatment is discouraged due to the potential for lowering seizure threshold, prolonging the QT interval, and decreasing heat dissipation. We performed a systematic review including animal and human studies to elucidate the efficacy and safety of antipsychotics in managing sympathomimetic toxicity specifically evaluating the effect of treatment on mortality, seizures, hyperthermia, and cardiovascular effects. Methods We searched MEDLINE, Embase, BIOSIS Previews, Web of Science, Scopus, CENTRAL and gray literature from inception to 31 May 2017 to answer: Can antipsychotics be used safely and effectively to treat cocaine or amphetamine toxicity? Citations were screened by title and abstract. Additional citations were identified with citation tracking. Data were extracted from full-texts. Results 6539 citations were identified; 250 full-text articles were assessed. Citation tracking identified 2336 citations; 155 full texts were reviewed. Seventy-three papers were included in this review. In 96 subjects with cocaine toxicity treated with an antipsychotic, there were three deaths, two cardiac arrests, two seizures, and one episode of hyperthermia. In 330 subjects with amphetamine toxicity treated with an antipsychotic, there were two episodes of coma and QT prolongation and one episode of each: hypotension, NMS, cardiac arrest, and death. Conclusion This systematic review represents an exhaustive compilation of the available evidence. There is neither a clear benefit of antipsychotics over benzodiazepines nor a definitive signal of harm noted. We encourage clinicians to adapt treatment based on specific circumstances and characteristics of their individual patients.

Objective To systematically review and summarize studies investigating an association between a history of preeclampsia and cognitive function later in life. Data sources Studies published before August 2017 were identified without any language restriction or study design limits through electronic searches of 10 main databases including MEDLINE and ClinicalTrials.gov. Methods of study selection We considered all observational studies that included preeclampsia as a clearly defined prespecified risk factor and that examined a cognition-related outcome measure including validated cognitive tests, magnetic resonance brain imaging, or a clinical diagnosis of dementia. Study quality was assessed using the New-Castle Ottawa scale. All review stages were conducted independently by two reviewers, and disagreement was resolved by a third reviewer. Where possible, data were pooled using a random-effects model. Tabulation, integration, and results Of 3,126 potentially relevant studies, 13 were included in our review (1,314 women with prior preeclampsia and 289,080 women with prior normotensive pregnancy); median time since pregnancy was 6 years. A higher number of self-reported deficits in perception, memory, and motor functioning on the Cognitive Failure Questionnaire was reported in women with vs without prior preeclamptic pregnancies (Cognitive Failure Questionnaire mean total score 41.5 vs 36.8 out of 100, weighted mean difference of -5.1 points [-9.4 to -0.8]). Our meta-analysis did not reveal significant differences in studies assessing attention (Digit Symbol Substitution or Coding); however, women with preeclampsia performed worse on one of two meta-analyzed tests assessing memory (Letter Number Sequencing mean total score: 10.6 vs 10.1 out of 21, weighted mean difference of 0.63 points 0.06-1.2). Pooling of cognitive outcome measures for studies assessing brain imaging or a clinical diagnosis of dementia were limited by differences in reporting and marked heterogeneity between studies. Conclusion Although preeclampsia is associated with subjective cognitive symptoms, our systematic review did not demonstrate clear evidence of impairment on standard neurocognitive tests. There is a paucity of high-quality studies assessing cognitive outcomes after preeclampsia.

Objective This review sought to describe the current state of knowledge of the impact of frailty on perioperative clinical outcomes in patients undergoing vascular interventions. Methods A scoping review of the literature from both PubMed and Ovid Embase databases was conducted to identify relevant English- and French-language articles published from inception to May 31, 2018. Patients undergoing vascular surgery interventions were included. Results Twenty-three studies have addressed the prevalence or prognostic impact of frailty in patients undergoing vascular surgery procedures. The prevalence of frailty ranged from 20% to 60%, and notably 14 different frailty assessments were used in these studies. Frailty was associated with increased comorbid status, prolonged length of stay, discharge to assisted living facility, loss of independence, postoperative morbidity, and all-cause mortality. Conclusions There are a variety of heterogeneous tools to measure frailty in patients undergoing vascular surgery interventions. The prevalence of frailty varies by the scale used to measure it, as does its predictive value. Clinicians and surgeons should be sensitized to the importance of assessing frailty preoperatively in older adults undergoing vascular surgery and using it to assist in the decision-making process and allocation of surgical resources.

We initiated a research program to develop a novel patient-reported outcome measure (PROM) to assess postoperative recovery from the perspective of abdominal surgery patients. In light of FDA recommendations, the first stage of our program aimed to, based on previous literature and expert input, develop a hypothesized conceptual framework portraying the health domains that are potentially relevant to the process of recovery after abdominal surgery. This study was conducted in three phases: (1) systematic review to identify PROMs with measurement properties appraised in the context of recovery after abdominal surgery, (2) content analysis to categorize the health domains covered by the PROMs according to the ICF, and (3) two-round Delphi study to gain expert input regarding which of these health domains are relevant to the process of recovery. Participants were experts in perioperative care identified through two major surgical societies (35 invited). The systematic review identified 19 PROMs covering 66 ICF domains. 23 experts (66%) participated in the Delphi process. After Round 2, experts agreed that 22 health domains (8 body functions, 14 activities and participation) are potentially relevant to the process of recovery after abdominal surgery. These domains were organized into a diagram, representing our hypothesized conceptual framework. This hypothesized conceptual framework is an important first step in our research program and will be further refined based on in-depth qualitative interviews with patients. The sound methodological approach used to derive this framework may be valuable for studies aimed to develop PROMs according to FDA standards.

The longer term cardiovascular effects of fertility therapy are unknown.The aim of this study was to summarize data linking fertility therapy with subsequent cardiovascular outcomes.We systematically searched published reports for studies addressing the question "does fertility therapy increase the risk of longer term cardiovascular outcomes?" We included: 1) human studies; 2) case control, cohort, or randomized designs with 3) exposure to fertility therapy and 4) cardiovascular outcomes clearly reported; 5) presence of comparison group; 6) minimum 1-year follow-up; and 7) adjustment for age. Two independent reviewers screened abstracts, titles, and full texts, and assessed study quality. We used the DerSimonian and Laird random-effects models to pool hazard ratios (HRs) with 95% confidence intervals (CIs) of the following outcomes: acute cardiac event; stroke; venous thromboembolism; hypertension; and diabetes mellitus, comparing women who received fertility therapy with those who did not.Six observational studies met inclusion criteria including 41,910 women who received fertility therapy and 1,400,202 women who did not. There was no increased risk of a cardiac event (pooled HR: 0.91; 95% CI: 0.67 to 1.25; IThe small number of studies and significant heterogeneity precludes definitive reassurance about the longer term cardiovascular safety of these treatments, particularly stroke. Future studies are needed to address ongoing knowledge gaps in this area.

Background. Mentorship is important but may not be feasible for distance learning. To bridge this gap, telementoring has emerged. The purpose of this systematic review was to evaluate the effectiveness of telementoring compared with on-site mentoring. Methods. A search was done up to March 2015. Studies were included if they used telementoring between surgeons during a clinical encounter and if they compared on-site mentoring and telementoring. Results. A total of 11 studies were included. All reported no difference in complication rates, and 9 (82%) reported similar operative times; 4 (36%) reported technical issues, which was 3% of the total number of cases in the 11 studies. No study reported on higher levels of evidence for effectiveness of telementoring as an educational intervention. Conclusion. Studies reported that telementoring is associated with similar complication rates and operative times compared with on-site mentoring. However, the level of evidence to support the effectiveness of telementoring as a training tool is limited. There is a need for studies that provide evidence for the equivalence of the effectiveness of telementoring as an educational intervention in comparison with on-site mentoring.

Background Parastomal hernia (PSH) is common after stoma formation. Studies have reported that mesh prophylaxis reduces PSH, but there are no cost-effectiveness data. Our objective was to determine the cost effectiveness of mesh prophylaxis vs no prophylaxis to prevent PSH in patients undergoing abdominoperineal resection with permanent colostomy for rectal cancer. Study Design Using a cohort Markov model, we modeled the costs and effectiveness of mesh prophylaxis vs no prophylaxis at the index operation in a cohort of 60-year-old patients undergoing abdominoperineal resection for rectal cancer during a time horizon of 5 years. Costs were expressed in 2012 Canadian dollars (CAD$) and effectiveness in quality-adjusted life years. Deterministic and probabilistic sensitivity analyses were performed. Results In patients with stage I to III rectal cancer, prophylactic mesh was dominant (less costly and more effective) compared with no mesh. In patients with stage IV disease, mesh prophylaxis was associated with higher cost (CAD$495 more) and minimally increased effectiveness (0.05 additional quality-adjusted life years), resulting in an incremental cost-effectiveness ratio of CAD$10,818 per quality-adjusted life year. On sensitivity analyses, the decision was sensitive to the probability of mesh infection and the cost of the mesh, and method of diagnosing PSH. Conclusions In patients undergoing abdominoperineal resection with permanent colostomy for rectal cancer, mesh prophylaxis might be the less costly and more effective strategy compared with no mesh to prevent PSH in patients with stage I to III disease, and might be cost effective in patients with stage IV disease.

Background Internet and software-based platforms (e-learning) have gained popularity as teaching tools in medical education. Despite widespread use, there is limited evidence to support their effectiveness for surgical training. This study sought to evaluate the effectiveness of e-learning as a teaching tool compared with no intervention and other methods of surgical training. Methods A systematic literature search of bibliographical databases was performed up to August 2015. Studies were included if they were RCTs assessing the effectiveness of an e-learning platform for teaching any surgical skill, compared with no intervention or another method of training. Results From 4704 studies screened, 87 were included with 7871 participants enrolled, comprising medical students (52 studies), trainees (51 studies), qualified surgeons (2 studies) and nurses (6 studies). E-learning tools were used for teaching cognitive (71 studies), psychomotor (36 studies) and non-technical (8 studies) skills. Tool features included multimedia (84 studies), interactive learning (60 studies), feedback (27 studies), assessment (26 studies), virtual patients (22 studies), virtual reality environment (11 studies), spaced education (7 studies), community discussions (2 studies) and gaming (2 studies). Overall, e-learning showed either greater or similar effectiveness compared with both no intervention (29 and 4 studies respectively) and non-e-learning interventions (29 and 22 studies respectively). Conclusion Despite significant heterogeneity amongst platforms, e-learning is at least as effective as other methods of training.

To assess the efficacy, tolerability, and safety of cannabinoids (phyto- and syntheto-) in the management of rheumatic diseases.Multiple databases, including Medline, Embase, and CENTRAL, were searched. Randomized controlled trials with outcomes of pain, sleep, quality of life, tolerability (dropouts due to adverse events), and safety (serious adverse events), with comparison of cannabinoids with any type of control, were included. Study methodology quality was evaluated with the Cochrane risk of bias tool.In 4 short-term studies comprising 203 patients (58 with rheumatoid arthritis, 71 with fibromyalgia, and 74 with osteoarthritis [OA]), cannabinoids had a statistically significant effect on pain in 2, sleep in 2, and improved quality of life in 1, with the OA study prematurely terminated due to futility. The risk of bias was high for all 3 completed studies. Dizziness, cognitive problems, and drowsiness, as well as nausea, were reported for almost half of the patients. No serious adverse events were reported for cannabinoids during the study duration. No studies of herbal cannabis were identified.Extremely small sample sizes, short study duration, heterogeneity of rheumatic conditions and products, and absence of studies of herbal cannabis allow for only limited conclusions for the effects of cannabinoids in rheumatic conditions. Pain relief and effect on sleep may have some potential therapeutic benefit, but with considerable mild to moderate adverse events. There is currently insufficient evidence to recommend cannabinoid treatments for management of rheumatic diseases pending further study.

Guidelines recommend the use of bioprosthetics for abdominal wall reinforcement in contaminated fields, but the evidence supporting the use of biologic over synthetic non-absorbable prosthetics for this indication is poor. Therefore, the objective was to perform a systematic review of outcomes after synthetic non-absorbable and biologic prosthetics for ventral hernia repair or prophylaxis in contaminated fields. The systematic literature search identified all articles published up to 2013 that reported outcomes after abdominal wall reinforcement using synthetic non-absorbable or biologic prosthetics in contaminated fields. Studies were included if they included at least 10 cases (excluding inguinal and parastomal hernias). Quality assessment was performed using the MINORS instrument. The main outcomes measures were the incidence of wound infection and hernia at follow-up. Weighted pooled proportions were calculated using a random effects model. A total of 32 studies met the inclusion criteria and were included for synthesis. Mean sample size was 41.4 (range 10–190), and duration of follow-up was >1 year in 72 % of studies. Overall quality was low (mean 6.2, range 1–12). Pooled wound infection rates were 31.6 % (95 % CI 14.5–48.7) with biologic and 6.4 % (95 % CI 3.4–9.4) with synthetic non-absorbable prosthetics in clean-contaminated cases, with similar hernia rates. In contaminated and/or dirty fields, wound infection rates were similar, but pooled hernia rates were 27.2 % (95 % CI 9.5–44.9) with biologic and 3.2 % (95 % CI 0.0–11.0) with synthetic non-absorbable. Other outcomes were comparable. The available evidence is limited, but does not support the superiority of biologic over synthetic non-absorbable prosthetics in contaminated fields.

Objective Enhanced-recovery pathways aim to accelerate postoperative recovery and facilitate early hospital discharge. The aim of this systematic review was to summarize the evidence regarding the influence of this intervention in patients undergoing lung resection. Methods The review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Statement. Eight bibliographic databases (Medline, Embase, BIOSIS, CINAHL, Web of Science, Scopus, Cochrane Database of Systematic Reviews, and Cochrane Central Register of Controlled Trials) were searched for studies comparing postoperative outcomes in adult patients treated within an enhanced-recovery pathway or traditional care. Risk of bias was assessed using the Cochrane Collaboration risk of bias tool. Results Six studies fulfilled our selection criteria (1 randomized and 5 nonrandomized studies). All the nonrandomized studies reported shorter length of stay in the intervention group (difference, 1.2-9.1 days), but the randomized study reported no differences. There were no differences between groups in readmissions, overall complications, and mortality rates. Two nonrandomized studies reported reduction in hospital costs in the intervention group. Risk of bias favoring enhanced recovery pathways was high. Conclusions A small number of low-quality comparative studies have evaluated the influence of enhanced-recovery pathways in patients undergoing lung resection. Some studies suggest that this intervention may reduce length of stay and hospital costs, but they should be interpreted in light of several methodologic limitations. This review highlights the need for well-designed trials to provide conclusive evidence about the role of enhanced-recovery pathways in this patient population.

Background The traditional classification of COPD, which relies solely on spirometry, fails to account for the complexity and heterogeneity of the disease. Phenotyping is a method that attempts to derive a single or combination of disease attributes that are associated with clinically meaningful outcomes. Deriving phenotypes entails the use of cluster analyses, and helps individualize patient management by identifying groups of individuals with similar characteristics. We aimed to systematically review the literature for studies that had derived such phenotypes using unsupervised methods. Methods Two independent reviewers systematically searched multiple databases for studies that performed validated statistical analyses, free of definitive pre-determined hypotheses, to derive phenotypes among patients with COPD. Data were extracted independently. Results 9156 citations were retrieved, of which, 8 studies were included. The number of subjects ranged from 213 to 1543. Most studies appeared to be biased: patients were more likely males, with severe disease, and recruited in tertiary care settings. Statistical methods used to derive phenotypes varied by study. The number of phenotypes identified ranged from 2 to 5. Two phenotypes, with poor longitudinal health outcomes, were common across multiple studies: young patients with severe respiratory disease, few cardiovascular co-morbidities, poor nutritional status and poor health status, and a phenotype of older patients with moderate respiratory disease, obesity, cardiovascular and metabolic co-morbidities. Conclusions The recognition that two phenotypes of COPD were often reported may have clinical implications for altering the course of the disease. This review also provided important information on limitations of phenotype studies in COPD and the need for improvement in future studies. Electronic supplementary material The online version of this article (doi:10.1186/s12931-015-0208-4) contains supplementary material, which is available to authorized users.