Individual Patient Data Meta-Analysis of 10-Year Follow-Up after Endovascular and Open Repair for Ruptured Abdominal AorticAneurysms.

BACKGROUND: Endovascular aortic repair (EVAR) has conferred an early survival advantage compared to an open surgical repair (OSR) in patients with ruptured abdominal aortic aneurysms (rAAA). However, the long-term survival benefit after EVAR was not displayed among randomized controlled trials (RCTs), whereas many non-RCTs have provided conflicting results. We conducted a time-to-event individual patient data (IPD) meta-analysis on long-term rAAA data. METHODS: All studies comparing mortality after EVAR versus OSR for rAAA were included. We used restricted mean survival times (RMSTs) as a measure of life expectancy for EVAR and OSR. RESULTS: A total of 21 studies, including 12,187 patients (4952 EVAR and 7235 OSR) were finally deemed eligible. A secondary IPD analysis included 725 (372 EVAR and 353 OSR) patients only from the 3 RCTs (Immediate Management of the Patient With Rupture : Open Versus Endovascular Repair, Endovasculaire ou Chirurgie dans les Anévrysmes aorto-iliaques Rompus and Amsterdam Acute Aneurysm Trial trials). Among all studies, the median survival was 4.20 (95% confidence interval [CI]: 3.70-4.58) years for EVAR and 1.91 (95% CI: 1.57-2.39) years for OSR. Although EVAR presented with increased hazard risk from 4 to 7 years, which peaked at 6 years after the operation, the RMST difference was 0.54 (95% CI: 0.35-0.73; P < 0.001) years gained with EVAR at the end of the 10-year follow-up. IPD meta-analysis of RCTs did not demonstrate significant differences. CONCLUSIONS: At 10-years follow-up, EVAR was associated with a 6.5 month increase in life expectancy when compared to OSR after analyzing all eligible studies. Evidence from our study suggests that a strict follow-up program would be desirable, especially for patients with long-life expectancy.

A randomized, observer-blind, vehicle-control, multi-center clinical investigation for assessing the efficacy and tolerability of a 1% ectoine and hyaluronic acid 0.1%-containing medical device in pediatric patients with mild-to-moderate atopic dermatitis.

BACKGROUND: Ectoine is a widespread osmolyte enabling halophilic bacteria to withstand high osmotic stress that has many potential applications ranging from cosmetics to its use as a therapeutic agent. OBJECTIVE: The aim of this study was to compare the efficacy and tolerability of ectoine 1% and hyaluronic acid 0.1% containing (EHA) cream with a vehicle cream in children with mild-to-moderate atopic dermatitis (AD). METHODS: A randomized, controlled, observer-blind, multicenter clinical trial was conducted in children aged 2-18 years, diagnosed with mild-to-moderate AD (SCORAD ≤20). Patients were randomized to either receiving EHA cream or vehicle cream twice daily for 4 weeks. The primary outcome measure was the mean change in objective SCORAD from baseline to the final visit. The secondary outcome measures included the mean change in Investigator's Global Assessment score, patient's judgment of efficacy and patient's assessment of pruritus. Safety of EHA cream was also assessed. RESULTS: A total of 70 patients (35 in each group) were randomized and 57 were included in the final analysis set. Based on SCORAD measurements, patients using EHA cream achieved superior clinical improvement compared to the control group at 28 days (p < .001). EHA cream was also superior to the vehicle cream regarding all secondary outcome measures. Eight (23.5%) patients receiving EHA cream and two (5.7%) patients receiving vehicle cream experienced mild cutaneous adverse events (AEs). CONCLUSIONS: In children 2-18 years old with mild-to-moderate AD, EHA cream was superior to vehicle cream, with minor AEs.

Comparative safety and efficacy of paracetamol versus non-steroidal anti-inflammatory agents in neonates with patent ductus arteriosus: A systematic review and meta-analysis of randomized controlled trials.

AIM: Ibuprofen and indomethacin are the preferred drug treatment for patent ductus arteriosus (PDA) in preterm neonates. The comparative safety and efficacy of paracetamol as an alternative has not yet been well established. The aim of our study was to define the comparative efficacy and safety of paracetamol versus ibuprofen and indomethacin for PDA. METHODS: We performed a systematic literature search in PubMed, Scopus and Cochrane databases on randomized controlled trials comparing the efficacy and/or the safety of paracetamol versus ibuprofen and/or indomethacin and meta-analysed the available data. RESULTS: There were 1718 neonates from 20 eligible studies. Paracetamol did not differ from ibuprofen or indomethacin regarding the primary (odds ratio [OR]: 0.93; 95% confidence interval [CI]: 0.69-1.26, P-value: 0.650, when compared to ibuprofen, and OR: 0.78; 95% CI: 0.20-3.02, P-value: 0.716, when compared to indomethacin) and overall (OR: 1.17; 95% CI: 0.82-1.66, P-value: 0.394, when compared to ibuprofen, and OR: 1.12; 95% CI: 0.58-2.15, P-value: 0.733, when compared to indomethacin) PDA closure rates. Paracetamol resulted in significantly reduced risk of oliguria and a tendency towards less gastrointestinal bleeding. CONCLUSION: There was no significant difference between paracetamol and ibuprofen or indomethacin in the PDA closure rates. However, paracetamol caused fewer adverse effects.

A systematic review and meta-analysis of interventional studies of bisphosphonates and denosumab in multiple myeloma and future perspectives.

Bisphosphonates (BPs) and denosumab (DENOS), due to their ability to inhibit osteoclast activity, are used to prevent skeletal complications in multiple myeloma (MM) patients. The NCBI PubMed, Web of Science, Scopus and ClinicalTrials.gov databases, were systematically searched for interventional studies, assessing the use of BP and DENOS in MM patients. Overall survival, disease progression, skeletal-related events, bone pain, osteonecrosis of the jaw (ONJ) and renal toxicity were the outcomes of interest. A total of 993 studies were retrieved and 43 were used for qualitative synthesis. Clodronate (CLOD) and zoledronic acid (ZOL) were effective in reducing skeletal complications compared to placebo. Results are mixed regarding the efficacy of pamidronate in reducing skeletal related events. ONJ rates were higher for ZOL, but under 5%, with CLOD having the safest profile. DENOS demonstrated non-inferiority to ZOL, in improving overall survival [pooled Hazard Ratio(HR) 1.02(95% CI 0.72,1.44)], progression free survival [pooled HR 0.92(95% CI 0.76,1.11)] and in reducing skeletal related events [pooled HR 1.03(95% CI 0.92,1.16)], with similar rates of ONJ and better safety profile regarding renal toxicity. Denosumab has comparable efficacy and safety with ZOL and may even replace BPs in the future, in the management of myeloma bone disease.

Analysis of the quality of reporting of randomized controlled trials in anticoagulant versus antiplatelet medication for venous thromboembolism prophylaxis as governed by the CONSORT statement.

Randomized controlled trials (RCTs) are the gold standard research in evaluating healthcare interventions. The CONSORT (Consolidated Standards of Reporting Trials) statement improves the quality of RCTs in an evidence-based approach. To evaluate the reporting quality of published RCTs concerning the use of anticoagulants versus antiplatelet agents for venous thromboembolism prophylaxis according to the CONSORT statement. Electronic databases were searched for English-language RCTs involving patients who received either anticoagulant or antiplatelet medication for prophylaxis of deep vein thrombosis and pulmonary embolism published from 2000 to 2019. Trials were considered eligible when the included patients received either anticoagulant or antiplatelet medication for primary and secondary prevention of deep vein thrombosis or pulmonary embolism and were randomly assigned to at least two treatment arms. Quality of reporting was assessed using a 37-item questionnaire based on the CONSORT 2010 checklist. Reporting was assessed in 2 publication periods (2000-2009) and (2010-2019). The effect of CONSORT statement in high- and low-ranked medical journals, according to their impact factor, has also been evaluated. The search identified 13 eligible articles for analysis. Only 12 of the 37 items of the checklist were addressed in 75% or more of the studies. Most items concerning the methodological issues were reported by fewer than 50% of the studies. Improvements over time were seen for items that assessed the methodological quality with no statistically significant difference. RCTs published in high-ranked journals showed better quality of reporting. Quality of reporting in RCTs focusing on the use of anticoagulants versus antiplatelet agents for venous thromboembolism prophylaxis remains unsatisfactory. Further improvement of reporting is necessary to assess the validity of clinical research.

A SYSTEMATIC REVIEW OF OBSERVATIONAL STUDIES ASSESSING THE IMPACT OF OXIDATIVE STRESS IN COGNITIVE DECLINE.

OBJECTIVE: Introduction: Cognitive functions are defined as the mental processes through which information is received, processed, stored, and retrieved. Oxidation is considered as an important factor that affects negatively the brain function. The aim: To assess the impact of oxidative stress, as it is measured by oxidative markers or by the presence of anti-oxidants, on cognitive decline. PATIENTS AND METHODS: Materials and methods: A systematic review of published observational studies in PubMed and in Scopus was performed. During the review process the keywords were used as follows: ("oxidative stress") AND ("cognitive decline" OR "cognitive dysfunction" OR "cognitive impairment" OR "cognitive deficiency") AND ("observational study" OR "cross sectional study" OR "prospective study" OR "retrospective study" OR "cohort study"). The search was conducted for the years from 2016 to 2020. CONCLUSION: Conclusions: Seventy-four eligible studies were identified. Thirteen studies met the inclusion and quality criteria and were included in the systematic review. The studies conducted in ten different countries. Information about oxidative stress biomarkers is available in eight studies, while information about antioxidant factors is in ten studies. In all the thirteen studies the cognitive function was assessed with specific tools - scales. In the majority of studies, the presence of high scores in oxidative markers was positively associated with cognitive decline, while higher levels of antioxidant markers were associated with better cognitive function. Our results indicate that oxidative stress may be significantly associated with cognitive decline. The presence of the antioxidants glutathione, uric acid, melatonin, cysteine and peroxide dismutase has a positive effect on cognitive function.

Piezoelectric or Conventional Osteotomy in Rhinoplasty? A Systematic Review and Meta-Analysis of Clinical Outcomes.

INTRODUCTION: Osteotomy of nasal bones in rhinoplasty is associated with postsurgical morbidities. Recent evidence has suggested that a surgical method applying piezoelectric ultrasound waves for nasal osteotomies in rhinoplasty reduces soft tissue damage and causes less postsurgical morbidities compared to conventional methods. The purpose of this study is to compare clinical outcomes of piezoelectric and conventional lateral nasal osteotomies in rhinoplasty. METHODS: We searched PubMed, CENTRAL, and Web of Science up to 17 August 2019 for studies comparing postoperative outcomes of piezoelectric and conventional lateral osteotomies in rhinoplasty. We included studies comparing results of patients subjected to piezoelectric or conventional lateral nasal osteotomies in rhinoplasty. For outcomes, we considered postoperative pain, eyelid edema, periorbital ecchymosis, and intraoperative mucosal injury. RESULTS: For eyelid edema, a statistically significant difference in favor of piezoelectric osteotomy was documented within the first 3 postoperative days (standardized mean difference [SMD] = -0.65; 95% CI = -1.18, -0.12, p = 0.02; I2 = 69%) and on postoperative day 7 (SMD = -0.69; 95% CI = -1.47, -0.09; p = 0.08; I2 = 85%). This was also the case for periorbital ecchymosis within the first 3 postoperative days (SMD = -0.85; 95% CI = -1.42, -0.28; p = 0.004; I2 = 72%) and on postoperative day 7 (SMD = -0.52; 95% CI = -0.79, -0.24; p = 0.0003; I2 = 71%). Intraoperative mucosal injury (OR = 0.06; 95% CI = 0.01, 0.53; p = 0.01; Ι2 = 0%) and postoperative pain (SMD = -0.99; 95% CI = -1.78, -0.11; p = 0.01; I2 = 49%) were also statistically lower during piezoelectric osteotomies. CONCLUSIONS: This study shows that lateral piezoelectric osteotomy in rhinoplasty decreases postoperative pain, edema, ecchymosis, and intraoperative mucosa injuries compared to the conventional osteotomy technique with a chisel. Piezoelectric osteotomies are especially associated with less postoperative edema and ecchymosis in osteotomies not executed under direct vision.

Variants of the elastin (ELN) gene and susceptibility to intracranial aneurysm: a synthesis of genetic association studies using a genetic model-free approach.

BACKGROUND: The presence of an intracranial aneurysm (IA) is thought to have a genetic origin. The genetic association studies (GAS) that investigated the association between IA and elastin gene (ELN) variants have produced contradictory or inconclusive results. MATERIALS AND METHODS: In order to decrease the uncertainty of estimated genetic risk effects, a meta-analysis of published GAS-related variants in the ELN gene (ELN INT20 1315T > C, EX20 1264G > A, INT23 1501 + 24T > C and INT4 196 + 71G > A) with susceptibility to IA was conducted using a genetic model-free approach. The risk effects were estimated using the generalized odds ratio (ORG) metric. RESULTS: The analysis showed significant association for the INT20 1315T > C variant [ORG = 0.66 (0.45-0.95)], indicating a protection effect. For the variants EX20 1264G > A, INT23 1501 + 24T > C and INT4 196 + 71G > A, no statistically significant association with IAs was found. CONCLUSION: There is evidence that the ELN variant INT20 1315T > C is implicated in the development of IA; however, the results should be interpreted with caution since the number of published studies is limited.

MDR1 mRNA expression and MDR1 gene variants as predictors of response to chemotherapy in patients with acute myeloid leukaemia: a meta-analysis.

Data from 30 pharmacogenomic studies that investigated MDR1 mRNA expression or gene variants (C3435T, G2677TA, C1236T) and response to therapy in acute myeloid leukaemia (AML) were synthesized. Anthracycline-based regimens were mainly used. MDR1 mRNA overexpression was associated with poor response to therapy [odds ratio (OR) = 2.49 95% confidence interval (CI) 1.38-4.50]. The gene variants were not associated with response to treatment; the generalized ORs, a genetic model-free approach, for the variants C3435T, G2677TA and C1236T were ORG = 0.86 (95% CI 0.55-1.37), ORG = 0.97 (95% CI 0.58-1.64) and ORG = 1.17 (95% CI 0.75--1.83), respectively. There is indication that MDR1 mRNA expression may be considered as a potential marker for response to chemotherapy in AML patients.

Assessment of the reporting quality of randomised controlled trials for vitamin D supplementation in autoimmune thyroid disorders based on the CONSORT statement.

BACKGROUND-PURPOSE: Randomized controlled trials (RCTs) are the cornerstone of evidence-based medicine, yet their quality is often suboptimal. The Consolidated Standards of Reporting Trials (CONSORT) statement is a list of advice to upgrade the quality of RCTs. The aim of this study was the assessment of the quality of RCTs for vitamin D supplements in thyroid autoimmunity according to the revised CONSORT 2010 checklist. METHODS: Databases were searched for RCTs involving patients with autoimmune thyroid disorders (AITDs) who received vitamin D supplements published from 2011 to 2021. A list of 37-items was used and adherence ≥75% was considered of optimal quality. The primary outcome was the mean CONSORT adherence of studies. Secondary outcomes were the estimation of compliance per CONSORT item and the examination for possible determinants of the reporting quality. RESULTS: Thirteen eligible trials were finally included. The mean compliance was 61.15% ± 14.86%. Only threeof the studies (23%) achieved a good reporting quality (≥75%), while ten (77%) were presented with inadequate reporting (<75%). Randomization and blinding were mainly poorly reported. Impact Factor (IF) of journal was associated with the reporting quality in the univariate analysis [p = 0.033, OR = 1.65, 95%CI = (1316, 1773)]. Sample size (p = 0.067), number of authors (p = 0.118) and number of citations (p = 0.125) were marginally not significant. None of the factors showed significant results in multivariate analysis. Reporting quality and IF were strongly positively correlated [Pearson's r = 0.740, p = 0.04]. CONCLUSION: This study shows that mean CONSORT adherence of RCTs for Vitamin D supplementation in AITDs is moderate, reflecting that study quality and transparency could be improved with better adherence to CONSORT rules.

Healthcare Workers' Attitudes towards Mandatory COVID-19 Vaccination: A Systematic Review and Meta-Analysis.

BACKGROUND: COVID-19 vaccine mandates are considered a controversial public health policy both in public debate and among healthcare workers (HCWs). Thus, the objective of this systematic review is to give a deep insight into HCWs' views and attitudes towards COVID-19 vaccination mandates amid the ongoing COVID-19 pandemic. METHODS: A systematic literature search of five databases (PubMed, Scopus, Embase, CINAHL, and Web of Science) was conducted between July 2022 and November 2022. Original quantitative studies that addressed the attitudes of HCWs regarding COVID-19 vaccine mandates were considered eligible for this systematic review. All the included studies (n = 57) were critically appraised and assessed for risk of systematic bias. Meta-analyses were performed, providing a pooled estimate of HCWs' acceptance towards COVID-19 vaccine mandates for: 1. HCWs and 2. the general population. RESULTS: In total, 64% (95% CI: 55%, 72%) of HCWs favored COVID-19 vaccine mandates for HCWs, while 50% (95% CI: 38%, 61%) supported mandating COVID-19 vaccines for the general population. CONCLUSIONS: Our findings indicate that mandatory vaccination against COVID-19 is a highly controversial issue among HCWs. The present study provides stakeholders and policy makers with useful evidence related to the compulsory or non-compulsory nature of COVID-19 vaccinations for HCWs and the general population. Other: The protocol used in this review is registered on PROSPERO with the ID number: CRD42022350275.

FDG-PET for detecting local tumor recurrence of ablated liver metastases: a diagnostic meta-analysis.

CONTEXT: Scanty reports have focused on FDG-PET after radiofrequency ablation (RFA), for recurrence of hepatic metastases. OBJECTIVE: To assess FDG-PET diagnostic accuracy on detection of recurrent hepatic lesions. METHODS: After a comprehensive search of PubMed and EMBASE, we performed a patient-based diagnostic meta-analysis of post-RFA FDG-PET. RESULTS: Across nine included articles, independent, random-effects sensitivity and specificity were 0.73(0.50-0.88) and 0.85(0.72-0.93), respectively. A symmetrical SROC curve was produced with no significant heterogeneity. Specificity was optimal for surgical RFA and colorectal origin of metastases. CONCLUSION: Synthesis of published evidence suggests PET/CT as an appropriate tool for optimizing post-ablation follow-up.

Knowledge, Attitude and Practices (KAP) of Ruminant Livestock Farmers Related to Zoonotic Diseases in Elassona Municipality, Greece.

Zoonotic diseases represent a significant health and economic burden in countries that rely on small ruminant milk production, such as Greece. Greece is endemic for many zoonotic diseases, some of which have occupational determinants. Our aim was to evaluate knowledge, attitude, and practices of livestock ruminant farmers concerning zoonoses. This study was performed as a cross-sectional study, using a questionnaire. We interviewed ruminant farmers (n = 204) from 33 settlements of an area with intense agrarian activity. Three index variables, namely knowledge score, attitude score, and practice score, were constructed. The relations between the explanatory variables and the three indexes were assessed based on linear regression analyses. Regarding practices, 23 (11.3%) consume unpasteurized milk or products from unpasteurized milk and no one takes precautionary measures when assisting animals in parturition or during handling birth material. Education level was positively associated with better knowledge and practices, while close veterinary supervision of the farm was associated with better practices regarding the zoonoses prevention. The results indicate the need for continuous awareness and education actions. Close contact with a veterinarian can be utilized as a key tool both with the current brucellosis vaccination program and in the design of awareness campaigns regarding zoonoses in collaboration with other public health personnel.

Effectiveness of exercise intervention during pregnancy on high-risk women for gestational diabetes mellitus prevention: A meta-analysis of published RCTs.

OBJECTIVE: We aimed at investigating the preventive role of exercise intervention during pregnancy, in high-risk women for gestational diabetes mellitus (GDM). MATERIALS AND METHODS: We searched PubMed, CENTRAL, and Scopus for randomized controlled trials (RCTs) that evaluated exercise interventions during pregnancy on women at high risk for GDM. Data were combined with random effects models. Between study heterogeneity (Cochran's Q statistic) and the extent of study effects variability [I2 with 95% confidence interval (CI)] were estimated. Sensitivity analyses examined the effect of population, intervention, and study characteristics. We also evaluated the potential for publication bias. RESULTS: Among the 1,508 high-risk women who were analyzed in 9 RCTs, 374 (24.8%) [160 (21.4%) in intervention, and 214 (28.1%) in control group] developed GDM. Women who received exercise intervention during pregnancy were less likely to develop GDM compared to those who followed the standard prenatal care (OR 0.70, 95%CI 0.52, 0.93; P-value 0.02) [Q 10.08, P-value 0.26; I2 21% (95%CI 0, 62%]. Studies with low attrition bias also showed a similar result (OR 0.70, 95%CI 0.51, 0.97; P-value 0.03). A protective effect was also supported when analysis was limited to studies including women with low education level (OR 0.55; 95%CI 0.40, 0.74; P-value 0.0001); studies with exercise intervention duration more than 20 weeks (OR 0.54; 95%CI 0.40, 0.74; P-value 0.0007); and studies with a motivation component in the intervention (OR 0.69, 95%CI 0.50, 0.96; P-value 0.03). We could not exclude large variability in study effects because the upper limit of I2 confidence interval was higher than 50% for all analyses. There was no conclusive evidence for small study effects (P-value 0.31). CONCLUSIONS: Our study might support a protective effect of exercise intervention during pregnancy for high-risk women to prevent GDM. The protective result should be corroborated by large, high quality RCTs.

Fresh frozen plasma transfusion in the neonatal population: A systematic review.

Although fresh frozen plasma (FFP) transfusions are common practice in neonatology, robust evidence on their use is lacking. The aim of this study was to systematically review the literature for data on the practice of FFP transfusions in neonates and their association with neonatal morbidity and mortality. The authors identified 40 studies, which met the inclusion criteria for this review. It was demonstrated that the practice of FFP transfusions significantly varies throughout the world. The majority of FFP transfusions are administered "prophylactically", without evidence of active bleeding. Although FFP transfusions may restore coagulation tests results, they do not alter the clinical outcome of the neonates. Reactions following transfusions are probably underestimated in neonates, often undiagnosed and thus, underreported. High quality RCTs aiming to evaluate the effectiveness of FFP in specific clinical conditions are urgently needed, as they could change long-standing FFP transfusion practices, and help reduce neonatal morbidity and mortality.

Synopsis and meta-analysis of genetic association studies in osteoporosis for the focal adhesion family genes: the CUMAGAS-OSTEOporosis information system.

BACKGROUND: Focal adhesion (FA) family genes have been studied as candidate genes for osteoporosis, but the results of genetic association studies (GASs) are controversial. To clarify these data, a systematic assessment of GASs for FA genes in osteoporosis was conducted. METHODS: We developed Cumulative Meta-Analysis of GAS-OSTEOporosis (CUMAGAS-OSTEOporosis), a web-based information system that allows the retrieval, analysis and meta-analysis (for allele contrast, recessive, dominant, additive and codominant models) of data from GASs on osteoporosis with the capability of update. GASs were identified by searching the PubMed and HuGE PubLit databases. RESULTS: Data from 72 studies involving 13 variants of 6 genes were analyzed and catalogued in CUMAGAS-OSTEOporosis. Twenty-two studies produced significant associations with osteoporosis risk under any genetic model. All studies were underpowered (<50%). In four studies, the controls deviated from the Hardy-Weinberg equilibrium. Eight variants were chosen for meta-analysis, and significance was shown for the variants collagen, type I, α1 (COL1A1) G2046T (all genetic models), COL1A1 G-1997T (allele contrast and dominant model) and integrin ß-chain ß3 (ITGB3) T176C (recessive and additive models). In COL1A1 G2046T, subgroup analysis has shown significant associations for Caucasians, adults, females, males and postmenopausal women. A differential magnitude of effect in large versus small studies (that is, indication of publication bias) was detected for the variant COL1A1 G2046T. CONCLUSION: There is evidence of an implication of FA family genes in osteoporosis. CUMAGAS-OSTEOporosis could be a useful tool for current genomic epidemiology research in the field of osteoporosis.

Bone mineral density and genetic markers involved in three connected pathways (focal adhesion, actin cytoskeleton regulation and cell cycle): the CUMAGAS-BMD information system.

The focal adhesion, the actin cytoskeleton and cell-cycle are connected pathways and their genes are implicated in the pathogenesis of low BMD. Data from 211 studies that investigated the association between BMD and gene variants involved in these pathways were catalogued in a web-based information system and analyzed. In individual studies, significant association was found for 16 variants in lumbar spine, 11 in femoral neck and 5 in hip. In meta-analysis, significant results were shown for the variants COL1A1 rs1800012 (in lumbar spine and femoral neck), COL1A1 rs1107946 (in lumbar spine), TGFB1 rs1982073 (in femoral neck and hip) and TGFB1 rs1800469 (in lumbar spine).

Intravitreal bevacizumab prior to vitrectomy for proliferative diabetic retinopathy: a systematic review.

BACKGROUND: Diabetic retinopathy is a leading cause of visual loss in the working population. Pars plana vitrectomy has become the mainstream treatment option for severe proliferative diabetic retinopathy (PDR) associated with significant vitreous haemorrhage and/or tractional retinal detachment. Despite the advances in surgical equipment, diabetic vitrectomy remains a challenging operation, requiring advanced microsurgical skills, especially in the presence of tractional retinal detachment. Preoperative intravitreal bevacizumab has been widely employed as an adjuvant to ease surgical difficulty and improve postoperative prognosis.Aims: This study aims to assess the effectiveness of preoperative intravitreal bevacizumab in reducing intraoperative complications and improving postoperative outcomes in patients undergoing vitrectomy for the complications of PDR. METHODS: A literature search was conducted using the PubMed, Cochrane, and ClinicalTrials.gov databases to identify all related studies published before 31/10/2020. Prespecified outcome measures were operation time, intraoperative iatrogenic retinal breaks, best-corrected visual acuity in the last follow-up visit, the presence of any postoperative vitreous haemorrhage and the need to re-operate. Evidence synthesis was performed using Fixed or Random Effects models, depending on the heterogeneity of the included studies. Heterogeneity was assessed using Q-statistic and I2. Additional meta-regression models, subgroup analyses and sensitivity analyses were performed as appropriate. RESULTS: Thirteen randomized control trials, with a total of 688 eyes were included in this review. Comparison of the intraoperative data showed that bevacizumab reduced operation time (p < 0.001), minimized iatrogenic retinal breaks (p < 0.001), provided better long-term visual acuity outcomes (p = 0.005), and prevented vitreous haemorrhage (p < 0.001) and the need for reoperation (p = 0.001 < 0.05). Findings were strongly corroborated by additional sensitivity and subgroup analyses. CONCLUSION: Preoperative administration of bevacizumab is effective in reducing intraoperative complications and improving the postoperative prognosis of diabetic vitrectomy.PROSPERO registration number: CRD42021219280.

Proportion of published primary health care protocols with published results in subsequent papers was decreasing.

OBJECTIVES: We assessed the proportion of primary health care (PHC) randomized controlled trial (RCT) protocols published in peer-reviewed journals that published results in subsequent papers in peer-reviewed journals; and whether this proportion changed over time. STUDY DESIGN AND SETTING: We searched (last update June 2019) for RCTs published in peer-reviewed journals reporting primary outcome results for 620 protocols that were published up to 2014 and were retrieved in PubMed. We recorded the absolute number and the proportion of protocols with published results per year; and estimated whether the proportion changed over time. RESULTS: Of the 620 published protocols, 525 (85%) disseminated their results through a published RCT by June 2019. The number of published protocols was increasing over time especially after 2001. However, the proportion of protocols per year with published results in subsequent papers was decreasing over time after 2002. Specifically, the proportion ranged from 86% to 96% for protocols published until 2010 while for those published from 2011 onward ranged from 76% to 86%. Mean time from protocol to results publication was 39 months (95% CI 37, 41). CONCLUSION: Almost one-sixth of PHC trial protocols published in peer-reviewed journals did not publish their results in subsequent papers.