The Diagnostic Value of Biomarkers in Acute Mesenteric Ischaemia Is Insufficiently Substantiated: A Systematic Review.

OBJECTIVE: There is an urgent need for accurate biomarkers to support timely diagnosis of acute mesenteric ischaemia (AMI) and thereby improve clinical outcomes. With this systematic review, the aim was to substantiate the potential diagnostic value of biomarkers for arterial occlusive AMI. DATA SOURCES: The Pubmed, Embase, and the Cochrane Library electronic databases were searched. REVIEW METHODS: A systematic review of the literature has been conducted to define the potential diagnostic value of biomarkers for arterial occlusive AMI. All studies including ≥ 10 patients describing biomarkers for macrovascular occlusive AMI between 1950 and 17 February 2023 were identified within the Pubmed, Embase, and the Cochrane Library electronic databases. There were no restrictions to any particular study design, but letters and editorials were excluded. The QUADAS-2 tool was used for the critical appraisal of quality. The study protocol was registered on Prospero (CRD42021254970). RESULTS: Fifty of 4334 studies were eligible for inclusion in this review. Ninety per cent of studies were of low quality. A total of 60 biomarkers were identified, with 24 in two or more studies and 15 in five or more studies. There was variation in reported units, normal range, and cut off values. Meta-analysis was not possible due to study heterogeneity. Biomarkers currently recommended by the European Journal of Vascular and Endovascular Surgery, European Society for Trauma and Emergency Surgery 2016, and World Society of Emergency Surgery 2017 guidelines also had heterogeneous low quality data for use in the diagnosis of AMI. CONCLUSION: This systematic review demonstrates high heterogeneity and low quality of the available evidence on biomarkers for arterial occlusive AMI. No clinical conclusions can be drawn on a biomarker or combination of biomarkers for patients suspected of arterial occlusive AMI. Restraint is advised when rejecting or determining AMI solely based on biomarkers.

Systematic review on management of high-output enterostomy in children: An urgent call for evidence.

OBJECTIVES/BACKGROUND: High-output stoma is one of the most common major morbidities in young children with an enterostomy that could lead to intestinal failure. Management of high-output enterostomy in children is mostly based on personal experience. This systematic review aims to clarify the evidence-based therapeutic approach of high-output enterostomy in children. METHODS: A systematic review was performed using Pubmed, Embase (Ovid), and Cochrane Library to identify studies published until March 20, 2023, following the 2020 Preferred Reporting Items for Systematic Reviews and Meta-Analyses guideline. The study population comprised children (i.e., age <18 years) with high-output enterostomy (i.e., jejuno-, ileo-, and/or colostomy), regardless of underlying aetiology. Interventions comprised any (non)pharmacological and/or surgical treatment. Interventions were compared with each other, placebos, and/or no interventions. Primary outcome was reduction of enterostomy output. Secondary outcomes were morbidity, mortality, quality of life, associated healthcare costs, and adverse events. RESULTS: The literature search identified 4278 original articles of which 366 were screened on full text, revealing that none of the articles met the inclusion criteria. CONCLUSION: This first systematic review on management of high-output enterostomy in children revealed that any evidence on the primary and secondary outcomes is lacking. There is an urgent need for evidence on conservative treatment strategies including fluid restrictions, dietary advices, oral rehydration solution, chyme re-infusion, and pharmacological and surgical treatments of high-output enterostomy in children, aiming to reduce the risk for short- and long-term complications. Till more evidence is available, a systematic and multidisciplinary step-up approach is needed. Therefore, a therapeutic work-up is proposed that could guide the care.

Smart mandibular advancement devices for obstructive sleep apnea: a systematic literature review.

PURPOSE: The goal of this review is to provide sleep physicians, dentists, and researchers with an evidence-based overview of the literature on smart mandibular advancement devices (MADs) for the treatment of obstructive sleep apnea. METHODS: A systematic literature search was conducted by two blinded reviewers and an information specialist. A smart MAD was defined as any MAD with additional functionality besides mandibular protrusion. The bibliographic databases Medline, Embase, and Scopus were used to identify relevant publications. Studies were included if they described any stage of development of smart MADs. A total of 3162 titles and abstracts were screened for their relevance. In total, 58 articles were selected for full-text screening, 26 of which were included in this review. RESULTS: The overall quality of the available literature was low. Most of the studies were observational, clinical or applied-research articles. The authors classified MADs into two main groups: passive and active. Passive MADs measured patient data, most commonly patient compliance. Active MADs adjusted protrusion of the mandible in response to patient data and were found in various phases of technological readiness (in development, demonstration, or deployment). CONCLUSION: Innovations in smart mandibular advancement devices most frequently track patient compliance. Devices measuring other health parameters and active, feedback-controlled, devices are increasingly reported on. However, studies demonstrating their added benefit over traditional methods remain sparse. With further study, smart mandibular advancement devices have the potential to improve the efficiency of obstructive sleep apnea treatment and provide new treatment possibilities.

What are Normal Defecation Patterns in Healthy Children up to Four Years of Age? A Systematic Review and Meta-Analysis.

OBJECTIVE: To summarize available data on defecation frequency and stool consistency of healthy children up to age 4 in order to estimate normal references values. STUDY DESIGN: Systematic review including cross-sectional, observational, and interventional studies published in English, that reported on defecation frequency and/or stool consistency in healthy children 0-4 years old. RESULTS: Seventy-five studies were included with 16 393 children and 40 033 measurements of defecation frequency and/or stool consistency. Based on visual inspection of defecation frequency data, a differentiation was made between two age categories: young infants (0-14 weeks old) and young children (15 weeks-4 years old). Young infants had a mean defecation frequency of 21.8 per week (95 % CI, 3.9-35.2) compared with 10.9 (CI, 5.7-16.7) in young children (P < .001). Among young infants, human milk-fed (HMF) infants had the highest mean defecation frequency per week (23.2 [CI, 8.8-38.1]), followed by formula-fed (FF) infants (13.7 [CI 5.4-23.9]), and mixed-fed (MF) infants (20.7 [CI, 7.0-30.2]). Hard stools were infrequently reported in young infants (1.5%) compared with young children (10.5%), and a reduction in the frequency of soft/watery stools was observed with higher age (27.0% in young infants compared with 6.2% in young children). HMF young infants had softer stools compared with FF young infants. CONCLUSIONS: Young infants (0-14 weeks old) have softer and more frequent stools compared with young children (15 weeks-4 years old).

Hospital-to-home transitions for children with medical complexity: part 1, a systematic review of reported outcomes.

Outcome selection to evaluate interventions to support a successful transition from hospital to home of children with medical complexity (CMC) may be difficult due to the variety in available outcomes. To support researchers in outcome selection, this systematic review aimed to summarize and categorize outcomes currently reported in publications evaluating the effectiveness of hospital-to-home transitional care interventions for CMC. We searched the following databases: Medline, Embase, Cochrane library, CINAHL, PsychInfo, and Web of Science for studies published between 1 January 2010 and 15 March 2023. Two reviewers independently screened the articles and extracted the data with a focus on the outcomes. Our research group extensively discussed the outcome list to identify those with similar definitions, wording or meaning. Consensus meetings were organized to discuss disagreements, and to summarize and categorize the data. We identified 50 studies that reported in total 172 outcomes. Consensus was reached on 25 unique outcomes that were assigned to six outcome domains: mortality and survival, physical health, life impact (the impact on functioning, quality of life, delivery of care and personal circumstances), resource use, adverse events, and others. Most frequently studied outcomes reflected life impact and resource use. Apart from the heterogeneity in outcomes, we also found heterogeneity in designs, data sources, and measurement tools used to evaluate the outcomes.     Conclusion: This systematic review provides a categorized overview of outcomes that may be used to evaluate interventions to improve hospital-to-home transition for CMC. The results can be used in the development of a core outcome set transitional care for CMC.

Effectiveness of transmural team-based palliative care in prevention of hospitalizations in patients at the end of life: A systematic review and meta-analysis.

BACKGROUND: Team-based palliative care interventions have shown positive results for patients at the end of life in both hospital and community settings. However, evidence on the effectiveness of transmural, that is, spanning hospital and home, team-based palliative care collaborations is limited. AIM: To systematically review whether transmural team-based palliative care interventions can prevent hospital admissions and increase death at home. DESIGN: Systematic review and meta-analysis. DATA SOURCES: MEDLINE (Ovid), Embase (Ovid), CINAHL (Ebsco), PsychINFO (Ovid), and Cochrane Library (Wiley) were systematically searched until January 2021. Studies incorporating teams in which hospital and community professionals co-managed patients, hospital-based teams with community follow-up, and case-management interventions led by palliative care teams were included. Data was extracted by two researchers independently. RESULTS: About 19 studies were included involving 6614 patients, of whom 2202 received an intervention. The overall pooled odds ratio of at least one hospital (re)admissions was 0.46 (95% confidence interval (CI) 0.34-0.68) in favor of the intervention group. The highest reduction in admission was in the hospital-based teams with community follow-up: OR 0.21 (95% CI 0.07-0.66). The pooled effect on home deaths was 2.19 (95% CI 1.26-3.79), favoring the intervention, with also the highest in the hospital-based teams: OR 4.77 (95% CI 1.23-18.47). However, studies had high heterogeneity regarding intervention, study population, and follow-up time. CONCLUSION: Transmural team-based palliative care interventions, especially hospital-based teams that follow-up patients at home, show an overall effect on lowering hospital admissions and increasing the number of patients dying at home. However, broad clinical and statistical heterogeneity of included studies results in uncertainty about the effect size.

High resorption rates following glenoid augmentation procedures do not seem to lead to higher recurrence rates or worse clinical outcomes: a systematic review and meta-analysis.

PURPOSE: Bone augmentation techniques show a relatively high complication rate, which might be due to graft non-union and resorption. It is unclear which augmentation techniques demonstrate the highest amount of non-union and resorption and whether this leads to worse clinical or functional outcomes. Therefore, the aim of this review was (i) to compare non-union and resorption rates between surgical approaches, procedures, graft types, donor sites and fixation methods regarding clinical and functional outcomes and (ii) determine whether high non-union or resorption rates lead to less favorable clinical or functional outcomes. METHODS: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses statements were followed. PubMed, EMBASE (Ovid) and Cochrane Library were searched on December 15th 2021 for studies examining bone graft non-union or resorption using radiograph or CT following glenoid augmentation to treat anterior shoulder dislocation. RESULTS: The search resulted in 103 inclusions, comprising 5,128 glenoid augmentations. When comparing pooled proportions of bony union, graft fracture rate, hardware failure rate, recurrence rate, return to sports and Rowe score, most results were similar between approaches, procedures, graft types, donor sites and fixation methods. High resorption rates were seen for allograft augmentation (74.3; 95% CI: 39.8-92.7) compared to autograft augmentation (15.5; 95% CI 10.1-23.2), but this was not associated with higher recurrence rates or worse clinical outcomes. Meta-analyses (8 studies; 494 patients) demonstrated no difference in incomplete and complete non-union rates between arthroscopic and open procedures; however, both analyses showed substantial heterogeneity. Higher partial resorption rates were observed on CT (48.0; 95% CI 43.3-52.7) compared to radiograph (14.1; 95% CI 10.9-18.1). Three studies comprising 267 shoulders demonstrated a higher rate of non-union and recurrence in smokers, whereas one study comprising 38 shoulders did not. CONCLUSION: Non-union and resorption rates were similar among procedures, grafts and fixation methods. Higher resorption rates were observed in allografts, but this was not associated with higher recurrence rates or worse clinical outcomes. Pooling data demonstrated substantial heterogeneity and definitions varied among studies, warranting more standardized measuring. LEVEL OF EVIDENCE: IV.

Surgical margins after partial nephrectomy as prognostic factor for the risk of local recurrence in pT1 RCC: a systematic review and narrative synthesis.

PURPOSE: To systematically review the published literature on surgical margins as a risk factor for local recurrence (LR) in patients undergoing partial nephrectomy (PN) for pT1 renal cell carcinomas (RCC). EVIDENCE ACQUISITION: A systematic literature search of relevant databases (MEDLINE, Embase and the Cochrane Library) was performed according to the PRISMA criteria up to February 2022. The hypothesis was developed using the PPO method (Patients = patients with pT1 RCC undergoing PN, Prognostic factor = positive surgical margins (PSM) detected on final pathology versus negative surgical margins (NSM) and Outcome = LR diagnosed on follow-up imaging). The primary outcome was the rate of PSM and LR. The risk of bias was assessed by the QUIPS tool. EVIDENCE SYNTHESIS: After assessing 1525 abstracts and 409 full-text articles, eight studies met the inclusion criteria. The percentage of PSM ranged between 0 and 34.3%. In these patients with PSM, LR varied between 0 and 9.1%, whereas only 0-1.5% of LR were found in the NSM-group. The calculated odds ratio (95% confident intervals) varied between 0.04 [0.00-0.79] and 0.27 [0.01-4.76] and was statistically significant in two studies (0.14 [0.02-0.80] and 0.04 [0.00-0.79]). The quality analysis of the included studies resulted in an overall intermediate to high risk of bias and the level of evidence was overall very low. A meta-analysis was considered unsuitable due to the high heterogeneity between the included studies. CONCLUSION: PSM after PN in patients with pT1 RCC is associated with a higher risk of LR. However, the evidence has significant limitations and caution should be taken with the interpretation of this data.

Pregnancy in women with liver cirrhosis is associated with increased risk for complications: A systematic review and meta-analysis of the literature.

BACKGROUND: Pregnancy and liver cirrhosis is a rare but increasing combination. Liver cirrhosis can raise the chance of maternal and fetal mortality and morbidity, although the exact risks remain unclear. OBJECTIVE: To provide a systematic literature review and meta-analysis on maternal, fetal and obstetric complications among pregnant women with liver cirrhosis. SEARCH STRATEGY: We performed a systematic literature search in the databases PubMed/MEDLINE and EMBASE (Ovid) from inception through 25 January 2021. SELECTION CRITERIA: Studies including pregnancies with liver cirrhosis and controls were eligible. DATA COLLECTION AND ANALYSIS: Two reviewers independently evaluated study eligibility. We used the random effects model for meta-analysis. MAIN RESULTS: Our search yielded 3118 unique papers. We included 11 studies, including 2912 pregnancies in women with cirrhosis from 1982-2020. Seven studies were eligible for inclusion in the meta-analysis. The overall maternal mortality rate was 0.89%. Maternal mortality and variceal haemorrhage were lower in recent than in older studies. Most cases of maternal mortality due to variceal haemorrhage (70%) occurred during vaginal delivery. Pregnant women with liver cirrhosis had a higher chance of preterm delivery (OR 6.7, 95% CI 5.1-9.1), caesarean section (OR 2.6, 95% CI 1.7-3.9), pre-eclampsia (OR 3.8, 95% CI 2.2-6.5) and small-for-gestational-age neonates (OR 2.6, 95% CI 1.6-4.2) compared with the general obstetric population. Subgroup analyses could not be conducted. CONCLUSIONS: Liver cirrhosis in pregnant women is associated with increases in maternal mortality and obstetric and fetal complications. Large international prospective studies are needed to identify risk factors for unfavourable outcome. TWEETABLE ABSTRACT: Systematic review and meta-analysis: higher risks that pregnant women with liver cirrhosis face are quantified.

Diagnostic accuracy of fibrosis tests in children with non-alcoholic fatty liver disease: A systematic review.

BACKGROUND & AIMS: Non-alcoholic fatty liver disease (NAFLD) has become the most common chronic liver disease in children. Even at young age, it can progress to liver fibrosis. Given the drawbacks of liver biopsy, there is a need for non-invasive methods to accurately stage liver fibrosis in this age group. In this systematic review, we evaluate the diagnostic accuracy of non-invasive methods for staging liver fibrosis in children with NAFLD. METHODS: We searched MEDLINE, Embase, Web of Science and the Cochrane Library, for studies that evaluated the performance of a blood-based biomarker, prediction score or imaging technique in staging liver fibrosis in children with NAFLD, using liver biopsy as the reference standard. RESULTS: Twenty studies with a total of 1787 NAFLD subjects were included, which evaluated three prediction scores, five simple biomarkers, two combined biomarkers and six imaging techniques. Most studies lacked validation. Substantial heterogeneity of studies and limited available study data precluded a meta-analysis of the few fibrosis tests evaluated in more than one study. The most consistent accuracy data were found for transient elastography by FibroScan®, ELF test and ultrasound elastography, with an area under the receiver operating characteristics curve varying between 0.92 and 1.00 for detecting significant fibrosis. CONCLUSION: Due to the lack of validation, the accuracy and clinical utility of non-invasive fibrosis tests in children with NAFLD remains uncertain. As studies have solely been performed in tertiary care settings, accuracy data cannot directly be translated to screening populations.

How to evaluate a flexible ureterorenoscope? Systematic mapping of existing evaluation methods.

OBJECTIVES: The objective of this study was to identify, map and review scope-related and user-related parameters used to evaluate the quality of flexible ureterorenoscopes. Thereby identifying key items and variability in grading systems. METHODS: A literature search of four databases (MEDLINE [Ovid], EMBASE [Ovid], Web of Science, Google scholar and the Cochrane Library) was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines encompassing articles published up to August 2020. A total of 2386 articles were screened. RESULTS: A total of 48 articles were included in this systematic scoping review. All studies had a prospective design. Five key items in the assessment of flexible ureterorenoscopy were distinguished: 'Manoeuvrability' (87.5%), 'Optics' (64.6%), 'Irrigation' (56.3%), 'Handling' (39.6%) and 'Durability' (35.4%). After regrouping, every key item could be divided into specific subcategories. However, the quality assessment showed a wide variation in denomination, method of measurement, circumstances of measurement, tools used during measurements, number of measurements performed, number of observers, and units of outcomes. CONCLUSION: The research field regarding quality assessment of ureterorenoscopes is heterogeneous. In this systematic scoping review we identified five key parameters: Manoeuvrability, Optics, Irrigation, Handling and Durability, used to grade flexible ureterorenoscopes. However, within these categories we found a wide variety in terms of method of measurements. A standardised, uniform grading tool is required to assess and compare the quality of flexible ureterorenoscopes in the future.

Barriers and facilitators for shared decision making in older patients with multiple chronic conditions: a systematic review.

BACKGROUND: The aim of this study was to describe barriers and facilitators for shared decision making (SDM) as experienced by older patients with multiple chronic conditions (MCCs), informal caregivers and health professionals. METHODS: A structured literature search was conducted with 5 databases. Two reviewers independently assessed studies for eligibility and performed a quality assessment. The results from the included studies were summarized using a predefined taxonomy. RESULTS: Our search yielded 3838 articles. Twenty-eight studies, listing 149 perceived barriers and 67 perceived facilitators for SDM, were included. Due to poor health and cognitive and/or physical impairments, older patients with MCCs participate less in SDM. Poor interpersonal skills of health professionals are perceived as hampering SDM, as do organizational barriers, such as pressure for time and high turnover of patients. However, among older patients with MCCs, SDM could be facilitated when patients share information about personal values, priorities and preferences, as well as information about quality of life and functional status. Informal caregivers may facilitate SDM by assisting patients with decision support, although informal caregivers can also complicate the SDM process, for example, when they have different views on treatment or the patient's capability to be involved. Coordination of care when multiple health professionals are involved is perceived as important. CONCLUSIONS: Although poor health is perceived as a barrier to participate in SDM, the personal experience of living with MCCs is considered valuable input in SDM. An explicit invitation to participate in SDM is important to older adults. Health professionals need a supporting organizational context and good communication skills to devise an individualized approach for patient care.

Factors Associated With Achalasia Treatment Outcomes: Systematic Review and Meta-Analysis.

BACKGROUND & AIMS: Identification of factors associated with achalasia treatment outcome might help physicians select therapies based on patient characteristics. We performed a systematic review and meta-analysis to identify factors associated with treatment response. METHODS: We searched MEDLINE, EMBASE, and the Cochrane Library through February 21, 2019, for randomized controlled trials and cohort, case-control, and cross-sectional studies that reported patient-specific outcomes of treatment (botulinum toxin injection, pneumatic dilation, peroral endoscopic myotomy, or laparoscopic Heller myotomy). We assessed the methodologic quality of the included studies using the quality in prognosis studies tool. We planned qualitative and quantitative analyses. RESULTS: We analyzed data from 75 studies (8 randomized controlled trials, 27 prospective cohort studies, and 40 retrospective studies) on a total of 34 different factors associated with outcomes (3 demographic, 17 clinical, and 14 diagnostic factors). Qualitative assessment showed age, manometric subtype, and presence of a sigmoid-shaped esophagus as factors associated with outcomes of treatment for achalasia with a strong level of evidence. The cumulative evidence for the association with chest pain, symptom severity, and lower esophageal sphincter pressure was inconclusive. A meta-analysis confirmed that older age (mean difference, 7.9 y; 95% CI, 1.5-14.3 y) and manometric subtype 3 (odds ratio, 7.1; 95% CI, 4.1-12.4) were associated with clinical response. CONCLUSIONS: In a systematic review and meta-analysis, we found age and manometric subtype to be associated with outcomes of treatment for achalasia. This information should be used to guide treatment decisions.

Bowel ultrasound measurements in healthy children - systematic review and meta-analysis.

BACKGROUND: Ultrasound (US) is a noninvasive method of assessing the bowel that can be used to screen for bowel pathology, such as Inflammatory Bowel Disease, in children. Knowledge about US findings of the bowel in healthy children is important for interpreting US results in cases where disease is suspected. OBJECTIVE: To assess the bowel wall thickness in different bowel segments in healthy children and to assess differences in bowel wall thickness among pediatric age categories. MATERIALS AND METHODS: We conducted a systematic search in the PubMed, Embase, Cochrane, and CINAHL databases for studies describing bowel wall thickness measured by transabdominal US in healthy children. We excluded studies using contrast agent. We calculated the pooled mean and standard deviation scores and assessed differences among age categories (0-4 years, 5-9 years, 10-14 years, 15-18 years), first with analysis of variance (ANOVA) and further with subsequent Student's t-tests for independent samples, corrected for multiple testing. RESULTS: We identified 191 studies and included 7 of these studies in the systematic review. Reported bowel wall thickness values ranged from 0.8 mm to 1.9 mm in the small bowel and from 1.0 mm to 1.9 mm in the colon. The mean colonic bowel wall thickness is larger in children ages 15-19 years compared to 0-4 years (range in difference: 0.3-0.5 mm [corrected P<0.02]). CONCLUSION: The reported upper limit of bowel wall thickness in healthy children is 1.9 mm in the small bowel and the colon, and mean thickness increases slightly with age in jejunum and colon. These values can be used as guidance when screening for bowel-related pathology in children.

Quality of Life in Children with Functional Constipation: A Systematic Review and Meta-Analysis.

OBJECTIVE: To systematically review the literature on health-related quality of life (HRQoL) in children with functional constipation and to identify disease-related factors associated with HRQoL. STUDY DESIGN: The Pubmed, Embase, and PsycINFO database were searched. Studies were included if they prospectively assessed HRQoL in children with functional constipation according to the Rome criteria. Articles were excluded if patients had organic causes of constipation and if HRQoL was only assessed after successful therapeutic interventions. A meta-analysis was performed calculating sample size-weighted pooled mean and SD of HRQoL scores. The quality of the studies was also assessed. RESULTS: A total of 20 of 2658 studies were included, providing HRQoL data for 2344 children. Quality of evidence was considered to be poor in 9 of the 20 studies (45%); 13 of the 20 studies reported sufficient data to be included in the meta-analysis. Pooled total HRQoL scores of children with functional constipation were found to be lower compared with healthy reference samples (65.6 vs 86.1; P < .01). Similar HRQoL scores were found according to self-report and parent proxy report. Hospital-based studies reported lower HRQoL scores as compared with community-based studies. Two studies reported on HRQoL scores of children with and without fecal incontinence, but no significant difference was found. CONCLUSIONS: HRQoL is compromised in children with functional constipation.

Frequent premature atrial contractions are associated with atrial fibrillation, brain ischaemia, and mortality: a systematic review and meta-analysis.

AIMS: Premature atrial contractions (PACs) are a common cardiac phenomenon, traditionally considered to be of little clinical significance. Recent studies, however, suggest that PACs are associated with atrial fibrillation (AF), as well as ischaemic stroke, transient ischaemic attack, and mortality. This systematic review aims to investigate the association between PACs on standard electrocardiogram (ECG) as well as PAC-count on Holter monitor and future detection of AF, brain ischaemia, and all-cause mortality in patients without a history of AF. METHODS AND RESULTS: We searched PubMed, Embase (OVID), and Cochrane Database of Systematic Reviews from inception through 11 April 2018 and performed a systematic review and meta-analysis. We assessed risk of bias using a modified Quality In Prognosis Studies tool. The primary expression of associations in meta-analysis was the unadjusted hazard ratio (HR) using a random effects model. We identified 33 eligible studies including 198 876 patients from Western and East Asian populations with mean age ranging 52-76 years. Frequent PACs on 24-48 h Holter was associated with AF [HR 2.96, 95% confidence interval (CI) 2.33-3.76; 15 cohorts, n = 16 613], first stroke (HR 2.54, 95% CI 1.68-3.83; 3 cohorts, n = 1468), and all-cause mortality (HR 2.14, 95% CI 1.94-2.37; 6 cohorts, n = 7571). There was insufficient evidence to conclude that presence of ≥1 PAC on standard 12-lead ECG is associated with future AF detection. CONCLUSION: In older patients without a history of AF, frequent PACs on 24-48 h Holter are significantly associated with AF, first stroke, and mortality.

The negative effect of joint line elevation after total knee arthroplasty on outcome.

PURPOSE: Total knee arthroplasty (TKA) is widely used as a treatment for knee osteoarthritis. However, still up to 20% of the patients are dissatisfied. Joint line elevation after TKA might be a contributing factor as it alters knee kinematics. The aim of this study was to investigate the effect of joint line elevation on outcome. METHODS: A systematic review of the literature was performed to select studies that reported on joint line alterations after primary or revision TKA and outcome. Studies with comparable outcome parameters were included in a correlation analysis. RESULTS: In total, 396 studies were identified, of which 27 met the inclusion criteria. 8 studies could be included in the correlation analysis. Mean joint line elevation after primary TKA was 3.0 mm and after revision TKA this was 3.6 mm. A statistically significant negative correlation was found between joint line elevation and the postoperative Knee Society Score (KSS) function score (ρ = - 0.496, p < 0.001). In a pooled analysis, the maintained joint line revision TKA group had statistically significant better postoperative KSS total scores compared to an elevated joint line group (p < 0.001). CONCLUSION: In this systematic review, a negative correlation between joint line elevation and outcome was found. Furthermore, revision TKAs with a maintained joint line have statistically significant better postoperative KSS scores compared to an elevated joint line group. To achieve optimal outcome after TKA, restoration of the joint line is one of the parameters that should be pursued and introduced elevation should not exceed 4 mm. LEVEL OF EVIDENCE: IV.

Prevalence of Functional Defecation Disorders in Children: A Systematic Review and Meta-Analysis.

OBJECTIVE: To systematically review the literature regarding the epidemiology of functional constipation and functional nonretentive fecal incontinence (FNRFI) in children. Secondary objectives were to assess the geographical, age, and sex distribution of functional constipation and FNRFI and to evaluate associated factors. STUDY DESIGN: The Cochrane Library, PubMed, and Embase databases were searched from 2006 until September 2017. The following inclusion criteria were applied: (1) prospective studies of population-based samples; (2) reporting on the prevalence of functional constipation or FNRFI according to the Rome III/IV criteria; (3) in children aged 0-18 years; and (4) published in full manuscript form. A quality assessment of included studies was conducted. Random effect meta-analyses with meta-regression analyses of study characteristics were performed. RESULTS: Thirty-seven studies were included, of which 35 reported on the prevalence of functional constipation and 15 of FNRFI. The reported prevalence of functional constipation ranged from 0.5% to 32.2%, with a pooled prevalence of 9.5% (95% CI 7.5-12.1). The prevalence of FRNFI ranged from 0.0% to 1.8%, with a pooled prevalence of 0.4% (95% CI 0.2-0.7). The prevalence of functional constipation was 8.6% in boys compared with 8.9% in girls (OR 0.99, 95% CI 0.9-1.4). Geographical location, dietary habits, and exposure to stressful life events were reported to be associated with the prevalence of functional constipation. Data on FNRFI were scarce and no associated factors were identified. CONCLUSION: Functional constipation is common in childhood and is associated with geographical location, lifestyle factors, and stressful life events. FNRFI is rare, and no associated factors were identified.

Burden of atrial high-rate episodes and risk of stroke: a systematic review.

Aims: Atrial fibrillation (AF) patients have increased risk of stroke. In paroxysmal AF, the combination of duration and frequency of episodes defines AF burden. In patients with cardiac implantable electronic devices (CIEDs), atrial high-rate episodes (AHREs) can be monitored continuously and are considered as a proxy for AF. This systematic review aims to determine the relationship between AF burden and risk of thrombo-embolic events (TBEs). Methods and results: We searched Medline, Embase, PubMed, and Cochrane Library databases and performed a review and meta-analysis. Eligible studies reported rhythm registration with specified AF burden and 3 months of follow-up for TBEs. Of the 8849 identified publications, 7 met the inclusion criteria. Of the 18 943 included patients, 215 (1.1%) patients developed a TBE. We detected only studies registering AHRE with a duration over 5 min detected by CIED. In a meta-analysis, patients with an AHRE burden over 6 min had an increased risk of TBE when compared with patients without AHRE, but this risk did not increase for an AHRE burden over 6 h [hazard ratio (HR) 1.82 vs. 1.78]. In a second meta-analysis, only patients with AHRE burden over 24 h had an increased risk for stroke (HR 3.2, 95% confidence interval 1.75-5.86), while patients with an AHRE burden shorter than 24 h did not. Conclusion: Patients with an AHRE burden over 6 min have an increased risk for stroke. A trend in which a higher AHRE burden leads to a higher risk for TBEs was observed but not substantiated due to heterogeneity and low numbers.

The role of the general practitioner in return to work after cancer-a systematic review.

Background: The number of cancer patients and survivors of working age is increasing. General Practitioners (GPs) may have a significant role in psychosocial cancer care, including work-related concerns. Therefore, we performed a systematic literature review to identify the role of the GP in work-related concerns and integration/reintegration into work of cancer patients and/or survivors. Methods: We searched PubMed, Embase, Cinahl, PsycINFO and Cochrane Library, irrespective of study design. We found 4863 articles and, after removing duplicates, we screened 3388 articles by title and abstract and reviewed 66 of these in full text. The Critical Appraisal Skills Programme tool was used to assess the methodological quality of included articles. We used narrative synthesis to describe the role of the GP. Results: We included four qualitative studies from three countries. Two of these studies focused on the health care professionals' perspectives and two studies focused on patients' perspectives regarding the role of the GP. Lack of communication between health care professionals, lack of knowledge about work-related concerns and limited resources were recurring themes in these papers. Fully establishing the role of the GP is difficult given the small number of studies on work-related concerns in cancer patients in primary care. Conclusion: There is little evidence regarding the role of the general practitioner in cancer care and work guidance. Therefore, further research should focus on the role that is desired for GPs and on interventions to study the feasibility of GP involvement in the return to work of cancer patients and/or survivors.