Oxygen therapy for acute myocardial infarction
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BACKGROUND: Oxygen (O2) is widely recommended for patients with myocardial infarction yet a narrative review has suggested it may do more harm than good. Systematic reviews have concluded that there was insufficient evidence to know whether oxygen reduced, increased or had no effect on the heart ischaemia or infarct size. OBJECTIVE: To review the evidence from randomized controlled trials to establish whether routine use of inhaled oxygen in acute myocardial infarction (AMI) improves patient-centered outcomes, in particular pain and death. CRITERIA FOR CONSIDERING STUDIES FOR THIS REVIEW: The following bibliographic databases were searched (to the end of February 2010): Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library), Medline, Medline In-Process, Embase, CINAHL, Lilacs and PASCAL, British Library ZETOC, Web of Science ISI Proceedings. Experts were also contacted to identify any studies. No language restrictions were applied. SELECTION CRITERIA: Randomized controlled trials of people with suspected or proven AMI, less than 24 hours after onset, in which the intervention was inhaled oxygen (at normal pressure) compared to air and regardless of co-therapies provided these were the same in both arms of the trial. DATA COLLECTION AND ANALYSIS: Two review authors independently reviewed the titles and abstracts of identified studies to see if they met the inclusion criteria and independently undertook the data extraction. The quality of studies and the risk of bias were assessed according to guidance in the Cochrane Handbook. The primary outcomes were death, pain and complications. The measure of effect used was the relative risk (RR). MAIN RESULTS: Three trials involving 387 patients were included and 14 deaths occurred. The pooled RR of death was 2.88 (95% CI 0.88 to 9.39) in an intention-to-treat analysis and 3.03 (95% CI 0.93 to 9.83) in patients with confirmed AMI. While suggestive of harm, the small number of deaths recorded meant that this could be a chance occurrence. Pain was measured by analgesic use. The pooled RR for the use of analgesics was 0.97 (95% CI 0.78 to 1.20). AUTHORS' CONCLUSIONS: There is no conclusive evidence from randomized controlled trials to support the routine use of inhaled oxygen in patients with acute AMI. A definitive randomized controlled trial is urgently required given the mismatch between trial evidence suggestive of possible harm from routine oxygen use and recommendations for its use in clinical practice guidelines.Keywords:
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The objectives of this study were to determine nurses' use of electronic databases to inform practice. A questionnaire survey of 114 nurses working on five acute wards in a large inner city teaching hospital investigated their general use of computers and the three databases, CINAHL, MEDLINE and the Cochrane Library. Eighty-two qualified nurses responded (response rate 72%). The results show limited confidence and low frequency in using the databases. Thirty-four per cent expressed low confidence using CINAHL. Twenty-seven per cent used CINAHL on a regular basis. Twenty-two per cent never used it. Eighteen per cent were unaware that it was available locally. Knowledge and use of MEDLINE was even lower with only 18% using it regularly. Knowledge of the Cochrane Library was extremely limited, with 75% unaware of its existence. Use of a home computer and higher education were associated with higher frequency of use of CINAHL and MEDLINE. If nurses are to make use of electronic resources to contribute to evidence-based practice, effort needs to be put into ensuring that already qualified nurses have basic computer skills and specific knowledge of available resources. More emphasis should be placed on 'evidence-based' resources, such as the Cochrane library, as sources of information for practice.
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Cross-sectional study
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Recent studies have indicated higher risk of fractures among coffee drinkers. To quantitatively assess the association between coffee consumption and the risk of fractures, we conducted this meta-analysis.We searched MEDLINE and EMBASE for prospective studies reporting the risk of fractures with coffee consumption. Quality of included studies was assessed with the Newcastle Ottawa scale. We conducted a meta-analysis and a cumulative meta-analysis of relative risk (RR) for an increment of one cup of coffee per day, and explored the potential dose-response relationship. Sensitivity analysis was performed where statistical heterogeneity existed.We included 10 prospective studies covering 214,059 participants and 9,597 cases. There was overall 3.5% higher fracture risk for an increment of one cup of coffee per day (RR = 1.035, 95% CI: 1.019-1.052). Pooled RRs were 1.049 (95% CI: 1.022-1.077) for women and 0.910 (95% CI: 0.873-0.949) for men. Among women, RR was 1.055 (95% CI: 0.999-1.114) for younger participants, and 1.047 (95% CI: 1.016-1.080) for older ones. Cumulative meta-analysis indicated that risk estimates reached a stabilization level (RR = 1.035, 95% CI: 1.019-1.052), and it revealed a positive dose-response relationship between coffee consumption and risk of fractures either for men and women combined or women specifically.This meta-analysis suggests an overall harm of coffee intake in increasing the risk of fractures, especially for women. But current data are insufficient to reach a convincing conclusion and further research needs to be conducted.
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Background. In recent years, traditional Chinese exercises (TCEs) have been gradually used to reduce the blood pressure levels of patients with essential hypertension. However, there are several types of TCEs, and there is no comparative study on the antihypertensive effects of various TCEs in patients with essential hypertension. Objective. The objective is to compare the therapeutic effects of Taijiquan (TJQ), Baduanjin (BDJ), Wuqinxi (WQX), and Yijinjing (YJJ) on essential hypertension and provide a reference for clinical treatment and scheme optimization. Methods. The China National Knowledge Infrastructure (CNKI), Wanfang, China Scientific Journal Database, China Biology Medicine database (CBM), PubMed, Embase, Cochrane Library, and Web of Science databases were searched to collect all randomized controlled trials (RCTs) of TCEs in the treatment of essential hypertension. The search time was from the establishment of each database to November 2021. After data extraction and quality evaluation, the network meta-analysis was performed with Stata 16.0 and ADDIS 1.16.8. Results. Finally, 45 RCTs involving 3864 patients were included. Network meta-analysis showed that YJJ had the best effect in reducing systolic blood pressure, and the difference was statistically significant [MD = −14.27, 95% CI = (−20.53∼−8.08), ]. The best probability ranking was YJJ ( ) > TJQ ( ) > WQX ( ) > BDJ ( ). In terms of reducing diastolic blood pressure, the treatment effect of YJJ was the best, and the difference was statistically significant [MD = −7.77, 95% CI (−12.19∼−3.33), ]. The best probability ranking was YJJ ( ) > TJQ ( ) > WQX ( ) > BDJ ( ). Conclusion. The results showed that TCEs significantly reduced systolic and diastolic blood pressure compared with the control group, and YJJ might be the best choice. However, a larger sample, multicenter, double-blinded, high-quality RCTs are needed to make clear conclusions.
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Essential hypertension
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Objectives To understand who are the participants in the decision-making process about the location of care of the elderly. Design Systematic review of qualitative studies. Data sources The following databases were consulted: Web of Science, MEDLINE, Scopus, CINAHL, PsycINFO and SciELO (from the beginning until 29 November 2017). The bibliographical references in the studies that were finally included in the review were also searched. Study selection The studies had to deal with the decision-making process (already experienced by the participants) on the location of care of the elderly (adults who are 65 or older), had to use a qualitative methodology and had to be written in English or Spanish. Data extraction and synthesis A data extraction tool was used. Data analysis was conducted through the constant comparative method from Glaser and Strauss’ grounded theory. Results 46 studies were included in this review. Most of them were carried out in the USA, and in 21 of them the study population focused exclusively on the elderly. This review has found that there are many participants, with different roles and degrees of involvement, who may act jointly, separately or sequentially. These participants may be: the elders, family members, professionals and other relevant. Conclusions The main result of this review has been the variability found on how this decision is made, even varying the way of acting/perceiving the situation of the involved persons on certain occasions, simply due to the influence of some of the other groups of participants studied. Besides, this review has focused its results on the main participant in this process, the elders and how their family members interact with them when it comes to making this decision. This has allowed relevant results to be obtained about roles and degrees of involvement. PROSPERO registration number CRD42018084826.
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Results of published studies on the association between the miR-146a rs2910164 polymorphism and the risk of hepatocellular carcinoma (HCC) were inclusive. We performed a meta-analysis. A literature research was conducted using PubMed, Cochrane Library, Ovid, Embase, Wanfang and China National Knowledge Infrastructure (CNKI) databases, to identify studies. Statistical analyses were conducted in STATA version 11.0 (Stata Corporation, College station, TX, USA). A total of 12 publications were included in this meta-analysis. The results of this meta-analysis suggested that miR-146a rs2910164 was associated with an increased risk of HCC (OR = 1.09, 95% CI = 1.00-1.19). In sensitivity analysis, the result was still positive when excluding the studies without HWE (OR = 1.12, 95% CI = 1.01-1.23). In conclusion, this meta-analysis suggested a significant association between miR-146a rs2910164 polymorphism and HCC risk.
Subgroup analysis
Cochrane collaboration
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Purpose: The purpose of this study was to review the effect of foot care education in type 2 diabetes mellitus patients. Methods: A systematic literature search was conducted using Ovid-Medline, EMBASE, Cochrane library, CINAHL, PsycINFO, RISS, NDSL, and KISS to identify studies reported in English or Korean from 2000 to 2022. Results: From the 3,070 studies extracted, 13 were selected for review. The studies were classified as information study, design study, subject study, intervention analysis, and effect analysis. Conclusion: The results of this study could be useful key principles in developing and applying foot care education programs for type 2 diabetes mellitus patients. Further research should be conducted to develop foot care education programs suitable for each patient group and to measure its effectiveness.
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Foot care
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