scholarly journals Screening electrocardiogram in young athletes and military members: a systematic review and meta-analysis

Author(s):  
Aaron Lear ◽  
Niraj Patel ◽  
Chanda Mullen ◽  
Marian Simonson ◽  
Vince Leone ◽  
...  

Abstract Objective: To determine the effect of electrocardiogram (ECG) screening on prevention of sudden cardiac arrest and death (SCA/D) in young athletes and military members. Data Sources: MEDLINE, Embase, Cochrane CENTRAL, Web of Science, BIOSIS, Scopus, SPORT discus, PEDro, and clinicaltrials.gov were searched from inception to dates between 2/21/19 and 7/29/19. Study Selection: Randomized and non-randomized controlled trials, where pre-participation examination including ECG was the primary intervention used to screen athletes or military 40 years of age or younger. Accepted controls were no screening, usual care, or pre-participation examination without ECG. 3 published studies , and one conference abstract were identified for inclusion. Data Extraction: In all four studies, risk of bias was assessed with the Cochrane risk of bias tool, and found to be generally high. Two studies had data extracted for random effects meta-analysis, and the remaining study and conference abstract were included in narrative review. Overall quality of evidence was assessed using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) Data Synthesis: Four non-randomized studies (11,689,172 participants) were included, all at high risk of bias. Pooled data from two studies (n= 3,869,274; very low quality evidence) observed an inconclusive 42% relative decrease in risk of sudden cardiac death (RR 0.58; 95% CI 0.23, 1.45), equating to an absolute risk reduction of .0016% The findings were consistent with a potential 67% relative decrease to a 45% relative increased risk in participants screened with ECG. Heterogeneity was found to be high as measured with I2 statistic (71%). Data from the remaining study and abstract were similarly inconclusive. Conclusion: Existing evidence for the effect of ECG screening is inconclusive and of very low quality. Our meta-analysis observed that screening ECG may result in considerable benefit or harm to participants. Higher quality studies are needed to reduce this uncertainty. PROSPERO Registration: CRD42019125560

Author(s):  
Aaron Lear ◽  
Niraj Patel ◽  
Chanda Mullen ◽  
Marian Simonson ◽  
Vince Leone ◽  
...  

AbstractObjectiveTo determine the effect of electrocardiogram (ECG) screening on prevention of sudden cardiac arrest and death (SCA/D) in young athletes and military members.Data SourcesMEDLINE, Embase, Cochrane CENTRAL, Web of Science, BIOSIS, Scopus, SPORT discus, PEDro, and clinicaltrials.gov were searched from inception to dates between 2/21/19 and 7/29/19.Study SelectionRandomized and non-randomized controlled trials, where pre-participation examination including ECG was the primary intervention used to screen athletes or military 40 years of age or younger. Accepted controls were no screening, usual care, or pre-participation examination without ECG. 3 published studies, and one conference abstract were identified for inclusion.Data ExtractionIn all four studies, risk of bias was assessed with the Cochrane risk of bias tool, and found to be generally high. Two studies had data extracted for random effects meta-analysis, and the remaining study and conference abstract were included in narrative review.Data Synthesis4 studies (11,689,172 participants) were included, all at high risk of bias. Pooled data from two studies (n= 3,869,274; very low quality) showed a 42% relative decrease in sudden cardiac death, equating to an absolute risk reduction of .0016%. Uncertainty was high, with a potential 67% relative decrease to a 45% relative increase in those screened with ECG based on 95% confidence intervals (RR 0.58; 95%CI 0.23, 1.45). Heterogeneity was found to be high as measured with I2 statistic (71%).ConclusionThere is very low quality evidence ECG screening decreases risk of sudden cardiac death in young athletes and military members. Decisions need to consider evidence that ECG screening could also increase risk of sudden cardiac death based on the findings of meta-analysis.PROSPERO RegistrationCRD42019125560Key PointsECG screening of athletes has been shown to be more effective than history and physical examination alone to diagnose conditions which put the athlete at risk for sudden cardiac arrest or death (SCA/D). Few data are available to answer the question of the effectiveness of ECG screening in preventing SCA/D in young athletes.We identified only four published accounts (3 full papers and one conference abstract) of non-randomized trials reporting on the effectiveness of ECG screening to prevent SCA/D in young athletes and military members. The quality of the published evidence is judged to be of very low quality to answer the question of whether ECG screening prevents episodes of SCA/D. No difference was identified between screened and non-screened athletes in data synthesis of two of the published articles eligible for meta-analysis (RR 0.58; 95%CI 0.23, 1.45).


Author(s):  
Aaron Lear ◽  
Niraj Patel ◽  
Chanda Mullen ◽  
Marian Simonson ◽  
Vince Leone ◽  
...  

Abstract Objectives: The goals of this review are to evaluate the quality of the evidence on the incidence of sudden cardiac arrest and death (SCA/D) in athletes and military members; and to estimate annual incidence of SCA/D. Data Sources: MEDLINE, Embase, Cochrane CENTRAL, Web of Science, BIOSIS, Scopus, SPORT discus, PEDro, and clinicaltrials.gov were searched from inception to dates between 2/21/19–7/29/19. Study Selection: Studies which reported incidence of SCA/D or both in athletes, or military members under age 40 were eligible for inclusion. 40 studies were identified for inclusion Data Extraction: Risk of bias was assessed using a validated, customized tool for prevalence studies in all included studies. 12 were found to be low ROB, with the remaining 28 moderate or high ROB. Data was extracted for narrative review, and meta-analysis. Data Synthesis: Random-effects meta-analysis was performed in studies judged to be low risk of bias in two separate categories: 5 studies on regional or national level data including athletes at all levels, and both sexes included 130 events of SCD, with a total of 11,272,560 athlete years showing a cumulative incidence rate of 0.98 [95%CI: 0.62, 1.53] per 100,000 athlete years, with high heterogeneity with I2 of 78%; 3 Studies on competitive athletes aged 14 to 25 were combined, and included 183 events, and 17,798758 athlete years showing an incidence rate of 1.91[95%CI: 0.71; 5.14] per 100,000 athlete years with high heterogeneity with I2 of 97%. The remaining low risk of bias studies were in military members, and were not synthesized. Conclusion: The worldwide incidence of SCD is a rare event. Low risk of bias studies indicate incidence to be below 2 per 100,000 athlete years. Overall, the quality of the evidence available is low, but there are high quality individual studies to inform the question of incidence levels. PROSPERO Registration: CRD42019125560


Author(s):  
Aaron Lear ◽  
Niraj Patel ◽  
Chanda Mullen ◽  
Marian Simonson ◽  
Vince Leone ◽  
...  

AbstractObjectivesThe goals of this review are to evaluate the quality of the evidence on the incidence of sudden cardiac arrest and death (SCA/D) in athletes and military members; and to estimate annual incidence of SCA/D.Data SourcesMEDLINE, Embase, Cochrane CENTRAL, Web of Science, BIOSIS, Scopus, SPORT discus, PEDro, and clinicaltrials.gov were searched from inception to dates between 2/21/19 and 7/29/19.Study SelectionStudies which reported incidence of SCA/D or both in athletes, or military members under age 40 were eligible for inclusion. 40 studies were identified for inclusionData ExtractionRisk of bias was assessed using a validated, customized tool for prevalence studies in all included studies. 12 were found to be low ROB, with the remaining 28 moderate or high ROB. Data was extracted for narrative review, and meta-analysis.Data SynthesisRandom-effects meta-analysis was performed in studies judged to be low risk of bias in two separate categories: 5 studies on regional or national level data including athletes at all levels, and both sexes included 130 events of SCD, with a total of 11,272,560 athlete years showing a cumulative incidence rate of 0.98 [95%CI: 0.62, 1.53] per 100,000 athlete years, with high heterogeneity with I2 of 78%; 3 Studies focusing on competitive athletes between the ages of 14 and 25 were combined, and included 183 events, and 17,798758 athlete years showing an incidence rate of 1.91[95%CI: 0.71; 5.14] per 100,000 athlete years with high heterogeneity with I2 of 97%.ConclusionThe worldwide incidence of SCD is a rare event. Low risk of bias studies indicate levels of SCD to be below 2 per 100,000 athlete years. Overall, the quality of the evidence available on the subject of SCA/D is low, but there are high quality individual studies to inform the question of incidence levels.PROSPERO RegistrationCRD42019125560Key PointsThere are several published articles which give a clear picture on the estimate of sudden cardiac arrest and death in athletes and military members, but the overall state of the literature has substantial risk of bias, with only 12 of 40 included articles at low risk of bias.Meta-analysis of sudden cardiac death was shown to be rare overall in athletes, with high quality, large population level studies synthesized to show a rate of 0.98 [95%CI: 0.62, 1.53] per 100,000 athlete years, and more focused studies on competitive younger athletes synthesized to show a rate 1.91[95%CI: 0.71; 5.14] per 100,000 athlete years. There was high heterogeneity present in both meta-analyses.


2011 ◽  
Vol 30 (11) ◽  
pp. 1849-1854 ◽  
Author(s):  
Kennon Heard ◽  
Nathan R Cleveland ◽  
Shay Krier

There are no controlled human studies to determine the efficacy of benzodiazepines or antipsychotic medications for prevention or treatment of acute cocaine toxicity. The only available controlled data are from animal models and these studies have reported inconsistent benefits. The objective of this study was to quantify the reported efficacy of benzodiazepines and antipsychotic medication for the prevention of mortality due to cocaine poisoning. We conducted a systematic review to identify English language articles describing experiments that compared a benzodiazepine or antipsychotic medication to placebo for the prevention of acute cocaine toxicity in an animal model. We then used these articles in a meta-analysis with a random-effects model to quantify the absolute risk reduction observed in these experiments. We found 10 articles evaluating antipsychotic medications and 15 articles evaluating benzodiazepines. Antipsychotic medications reduced the risk of death by 27% (95% CI, 15.2%–38.7%) compared to placebo and benzodiazepines reduced the risk of death by 52% (42.8%–60.7%) compared to placebo. Both treatments showed evidence of a dose-response effect, and no experiment found a statistically significant increase in risk of death. We conclude that both benzodiazepines and antipsychotic medications are effective for the prevention of lethality from cocaine toxicity in animal models.


BMJ ◽  
2018 ◽  
pp. k5108 ◽  
Author(s):  
Qiukui Hao ◽  
Malavika Tampi ◽  
Martin O’Donnell ◽  
Farid Foroutan ◽  
Reed AC Siemieniuk ◽  
...  

AbstractObjectiveTo assess the effectiveness and safety of dual agent antiplatelet therapy combining clopidogrel and aspirin to prevent recurrent thrombotic and bleeding events compared with aspirin alone in patients with acute minor ischaemic stroke or transient ischaemic attack (TIA).DesignSystematic review and meta-analysis of randomised, placebo controlled trials.Data sourcesMedline, Embase, Cochrane Central Register of Controlled Trials, Cochrane Library, ClinicalTrials.gov, WHO website, PsycINFO, and grey literature up to 4 July 2018.Eligibility criteria for selecting studies and methodsTwo reviewers independently screened potentially eligible studies according to predefined selection criteria and assessed the risk of bias using a modified version of the Cochrane risk of bias tool. A third team member reviewed all final decisions, and the team resolved disagreements through discussion. When reports omitted data that were considered important, clarification and additional information was sought from the authors. The analysis was conducted in RevMan 5.3 and MAGICapp based on GRADE methodology.ResultsThree eligible trials involving 10 447 participants were identified. Compared with aspirin alone, dual antiplatelet therapy with clopidogrel and aspirin that was started within 24 hours of symptom onset reduced the risk of non-fatal recurrent stroke (relative risk 0.70, 95% confidence interval 0.61 to 0.80, I2=0%, absolute risk reduction 1.9%, high quality evidence), without apparent impact on all cause mortality (1.27, 0.73 to 2.23, I2=0%, moderate quality evidence) but with a likely increase in moderate or severe extracranial bleeding (1.71, 0.92 to 3.20, I2=32%, absolute risk increase 0.2%, moderate quality evidence). Most stroke events, and the separation in incidence curves between dual and single therapy arms, occurred within 10 days of randomisation; any benefit after 21 days is extremely unlikely.ConclusionsDual antiplatelet therapy with clopidogrel and aspirin given within 24 hours after high risk TIA or minor ischaemic stroke reduces subsequent stroke by about 20 in 1000 population, with a possible increase in moderate to severe bleeding of 2 per 1000 population. Discontinuation of dual antiplatelet therapy within 21 days, and possibly as early as 10 days, of initiation is likely to maximise benefit and minimise harms.


2014 ◽  
Vol 41 (6) ◽  
pp. 1049-1060 ◽  
Author(s):  
Beverley Shea ◽  
Michael V. Swinden ◽  
Elizabeth Tanjong Ghogomu ◽  
Zulma Ortiz ◽  
Wanruchada Katchamart ◽  
...  

Objective.To perform a systematic review of the benefits and harms of folic acid and folinic acid in reducing the mucosal, gastrointestinal, hepatic, and hematologic side effects of methotrexate (MTX); and to assess whether folic or folinic acid supplementation has any effect on MTX benefit.Methods.We searched the Cochrane Library, MEDLINE, EMBASE, and US National Institutes of Health clinical trials registry from inception to March 2012. We selected all double-blind, randomized, placebo-controlled clinical trials in which adult patients with rheumatoid arthritis (RA) were treated with MTX (dose ≤ 25 mg/week) concurrently with folate supplementation. We included only trials using low-dose folic or folinic acid (a starting dose of ≤ 7 mg weekly) because the high dose is no longer recommended or used. Data were extracted from the trials, and the trials were independently assessed for risk of bias using a predetermined set of criteria.Results.Six trials with 624 patients were eligible for inclusion. Most studies had low or unclear risk of bias for key domains. The quality of the evidence was rated as “moderate” for each outcome as assessed by the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) working group, with the exception of hematologic side effects, which were rated as “low.” There was no significant heterogeneity between trials, including where folic acid and folinic acid studies were pooled. For patients supplemented with any form of exogenous folate (either folic or folinic acid) while receiving MTX therapy for RA, a 26% relative (9% absolute) risk reduction was seen for the incidence of gastrointestinal side effects such as nausea, vomiting, or abdominal pain (RR 0.74, 95% CI 0.59 to 0.92; p = 0.008). Folic and folinic acid also appear to be protective against abnormal serum transaminase elevation caused by MTX, with a 76.9% relative (16% absolute) risk reduction (RR 0.23, 95% CI 0.15 to 0.34; p < 0.00001), as well as reducing patient withdrawal from MTX for any reason [60.8% relative (15.2% absolute) risk reduction, RR 0.39, 95% CI 0.28 to 0.53; p < 0.00001].Conclusion.The results support a protective effect of supplementation with either folic or folinic acid for patients with RA during treatment with MTX. There was a clinically important significant reduction shown in the incidence of GI side effects and hepatic dysfunction (as measured by elevated serum transaminase levels), as well as a clinically important significant reduction in discontinuation of MTX treatment for any reason.


2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
M Burnier ◽  
L R Ruilope ◽  
G B Bader ◽  
S D Durg ◽  
P B Brunel

Abstract Background Blood pressure (BP) control is critical in delaying the progression of chronic kidney disease (CKD), which otherwise results in an increased risk of cardiovascular morbidity and mortality. Angiotensin II receptor blockers (ARBs) or angiotensin-converting enzyme inhibitors, are recommended by several guidelines as first-line treatment for patients with hypertension and CKD. Purpose We reviewed and analysed the effect of ARB treatment on BP and renal outcomes (estimated glomerular filtration rate (eGFR), serum creatinine (SCr), creatinine clearance (CrCl) or proteinuria) in patients with hypertension and CKD with or without diabetes, including large clinical trials such as RENAAL and IDNT. Methods MEDLINE, EMBASE, and BIOSIS databases were searched for literature from the earliest available date to July 2017. Randomised (parallel-group) controlled trials of ≥8 weeks assessed the impact of ARBs on systolic/diastolic BP (SBP/DBP), eGFR, SCr, CrCl or proteinuria were included in the analysis. Meta-analysis (post- versus pre-treatment) and meta-regression were conducted in R-statistical software (v3.4.1) using meta- and metafor-packages. Mean difference (MD, generic inverse variance) with 95% confidence intervals (CIs) was used to pool data for an outcome in a single forest plot. The risk of bias (quality) of included studies was assessed by the six items of the Cochrane instrument. Results Of the 165 articles assessed for eligibility, 24 studies were included in the analysis (19 evaluated ARBs as monotherapy, 4 evaluated ARBs in combination with other antihypertensives and 1 evaluated ARBs both as mono- and combination therapy). Treatment with ARBs as monotherapy for ≥8 weeks to <1 year significantly reduced mean office SBP (MD, −12.60 mmHg; 95% CI, −18.53 to −6.67)/DBP (−6.52 mmHg; −11.27 to −1.77) (p<0.01). BP reduction was also significant (p<0.01) with ARB monotherapy for ≥1 year SBP (−14.84 mmHg; −17.82 to −11.85)/DBP (−10.27 mmHg; −12.26 to −8.27). ARBs also significantly reduced SBP/DBP when combined with other antihypertensive treatments for ≥8 weeks to <1 year as well as for ≥1 year (Figure). Moreover, ARBs induced significant reductions (p<0.01) in proteinuria (≥8 weeks to <1 year [MD, −0.6 g/L; 95% CI, −0.93 to −0.26; ≥1 year [−0.9 g/L; −1.22 to −0.59]), but no significant changes in eGFR, CrCl or SCr levels. The beneficial effect of ARBs was maintained overtime with no significant additional impact on SBP change (estimate: 0.025; 95% CI, –0.14 to 0.19) or eGFR (estimate: 0.068; 95% CI, −0.14 to 0.28; p=0.53). The overall risk of bias was judged to be low. Effect of ARBs on blood pressure changes Conclusion Treatment with ARBs effectively and sustainably lowered BP and proteinuria with no significant change in eGFR in patients with hypertension and CKD with or without diabetes.


2021 ◽  
Vol 11 ◽  
Author(s):  
Eder da Silva Dolens ◽  
Mauricio Rocha Dourado ◽  
Alhadi Almangush ◽  
Tuula A. Salo ◽  
Clarissa Araujo Gurgel Rocha ◽  
...  

ObjectiveOver many decades, studies on histopathological features have not only presented high-level evidence of contribution for treatment directions and prognosis of oral squamous cell carcinoma (OSCC) but also provided inconsistencies, making clinical application difficult. The 8th TNM staging system of OSCC has acknowledged the importance of some histopathological features, by incorporating depth of invasion (DOI) to T category and extranodal extension (ENE) to N category. The aim of this systematic review with meta-analysis is to determine the most clinically relevant histopathological features for risk assessment and treatment planning of OSCC and to elucidate gaps in the literature.MethodsA systematic review was conducted using PRISMA guidelines, and the eligibility criteria were based on population, exposure, comparison, outcome, and study type (PECOS). PubMed, Cochrane, Scopus, and Web of Science were searched for articles exploring the impact of histopathological features on OSCC outcomes with Cox multivariate analysis. Pooled data were subjected to an inverse variance method with random effects or fixed effect model, and the risk of bias was evaluated using quality in prognosis studies (QUIPS). Quality of evidence was assessed with the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) criteria.ResultsThe study included 172 articles published from 1999 to 2021. Meta-analyses confirmed the prognostic potential of DOI, ENE, perineural invasion, lymphovascular invasion, and involvement of the surgical margins and brought promising results for the association of bone invasion, tumor thickness, and pattern of invasion with increased risk for poor survival. Although with a small number of studies, the results also revealed a clinical significance of tumor budding and tumor-stroma ratio on predicted survival of patients with OSCC. Most of the studies were considered with low or moderate risk of bias, and the certainty in evidence varied from very low to high.ConclusionOur results confirm the potential prognostic usefulness of many histopathological features and highlight the promising results of others; however, further studies are advised to apply consistent designs, filling in the literature gaps to the pertinence of histopathological markers for OSCC prognosis.Systematic Review RegistrationInternational Prospective Register of Systematic Reviews (PROSPERO), identifier CRD42020219630.


10.2196/14343 ◽  
2019 ◽  
Vol 21 (11) ◽  
pp. e14343 ◽  
Author(s):  
Dharani Yerrakalva ◽  
Dhrupadh Yerrakalva ◽  
Samantha Hajna ◽  
Simon Griffin

Background High sedentary time, low physical activity (PA), and low physical fitness place older adults at increased risk of chronic diseases, functional decline, and premature mortality. Mobile health (mHealth) apps, apps that run on mobile platforms, may help promote active living. Objective We aimed to quantify the effect of mHealth app interventions on sedentary time, PA, and fitness in older adults. Methods We systematically searched five electronic databases for trials investigating the effects of mHealth app interventions on sedentary time, PA, and fitness among community-dwelling older adults aged 55 years and older. We calculated pooled standardized mean differences (SMDs) in these outcomes between the intervention and control groups after the intervention period. We performed a Cochrane risk of bias assessment and Grading of Recommendations, Assessment, Development, and Evaluation certainty assessment. Results Overall, six trials (486 participants, 66.7% [324/486] women; age mean 68 [SD 6] years) were included (five of these trials were included in the meta-analysis). mHealth app interventions may be associated with decreases in sedentary time (SMD=−0.49; 95% CI −1.02 to 0.03), increases in PA (506 steps/day; 95% CI −80 to 1092), and increases in fitness (SMD=0.31; 95% CI −0.09 to 0.70) in trials of 3 months or shorter and with increases in PA (753 steps/day; 95% CI −147 to 1652) in trials of 6 months or longer. Risk of bias was low for all but one study. The quality of evidence was moderate for PA and sedentary time and low for fitness. Conclusions mHealth app interventions have the potential to promote changes in sedentary time and PA over the short term, but the results did not achieve statistical significance, possibly because studies were underpowered by small participant numbers. We highlight a need for larger trials with longer follow-up to clarify if apps deliver sustained clinically important effects.


2021 ◽  
Author(s):  
Rajendra Prasad Anne ◽  
Abhishek S Aradhya ◽  
Srinivas Murki

Abstract Preterm neonates with antenatal doppler abnormalities are at increased risk of necrotizing enterocolitis (NEC). In these neonates, we did a meta-analysis to compare the impact of early versus late initiation of feeding, and slow versus rapid feed advancement on the important neonatal outcomes. The databases of PubMed, Embase, Cochrane central, CINAHL and google scholar were searched on 6th September 2020. We included all randomized controlled trials addressing the study objective(s). The risk of bias was assessed using the Risk of Bias tool, version 2. Certainty of evidence was assessed using the GRADE (Grading of Recommendations Assessment, Development and Evaluation) approach. Early feeding did not increase the incidence of NEC stage 2 or more (odds ratio/OR 1.27, 95% confidence interval/CI 0.83, 1.96; 6 studies, 772 participants) and mortality (OR 0.79, 95% CI 0.4, 1.57; 3 studies, 498 participants). A trend was noted towards an increased incidence of feeding intolerance (OR 1.37, 95% CI 0.98, 1.92). There was a significant reduction in time to reach full feeds, duration of total parental nutrition, duration of hospital stay, and rates of hospital-acquired infections. The time to regain birth weight was not different. Rapid feed advancement decreased the time to reach full feeds, without affecting other outcomes. The overall certainty of the evidence was rated low. Heterogeneity was not significant. Conclusion: There is low-certainty evidence to recommend early feed initiation in preterm neonates with antenatal doppler abnormalities. The data is insufficient to make a recommendation on the rapidity of feed advancement.


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