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Sökning: WFRF:(Lindahl Bertil 1957 ) > Forskningsöversikt

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1.
  • Katus, Hugo, et al. (författare)
  • Early diagnosis of acute coronary syndrome
  • 2017
  • Ingår i: European Heart Journal. - : Oxford University Press (OUP). - 0195-668X .- 1522-9645. ; 38:41, s. 3049-3055
  • Forskningsöversikt (refereegranskat)abstract
    • The diagnostic evaluation of acute chest pain has been augmented in recent years by advances in the sensitivity and precision of cardiac troponin assays, new biomarkers, improvements in imaging modalities, and release of new clinical decision algorithms. This progress has enabled physicians to diagnose or rule-out acute myocardial infarction earlier after the initial patient presentation, usually in emergency department settings, which may facilitate prompt initiation of evidence-based treatments, investigation of alternative diagnoses for chest pain, or discharge, and permit better utilization of healthcare resources. A non-trivial proportion of patients fall in an indeterminate category according to rule-out algorithms, and minimal evidence-based guidance exists for the optimal evaluation, monitoring, and treatment of these patients. The Cardiovascular Round Table of the ESC proposes approaches for the optimal application of early strategies in clinical practice to improve patient care following the review of recent advances in the early diagnosis of acute coronary syndrome. The following specific 'indeterminate' patient categories were considered: (i) patients with symptoms and high-sensitivity cardiac troponin <99th percentile; (ii) patients with symptoms and high-sensitivity troponin <99th percentile but above the limit of detection; (iii) patients with symptoms and high-sensitivity troponin >99th percentile but without dynamic change; and (iv) patients with symptoms and high-sensitivity troponin >99th percentile and dynamic change but without coronary plaque rupture/erosion/dissection. Definitive evidence is currently lacking to manage these patients whose early diagnosis is 'indeterminate' and these areas of uncertainty should be assigned a high priority for research.
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2.
  • Eggers, Kai, 1962-, et al. (författare)
  • Impact of sex on cardiac troponin concentrations – A critical appraisal.
  • 2017
  • Ingår i: Clinical Chemistry. - : Oxford University Press (OUP). - 0009-9147 .- 1530-8561. ; 63:9, s. 1457-1464
  • Forskningsöversikt (refereegranskat)abstract
    • BACKGROUND:The use of sex-specific cutoffs for cardiac troponin (cTn) is currently debated. Although endorsed by scientific working groups, concerns have been raised that sex-specific cutoffs may have only a small clinical effect at the cost of increased complexity in decision-making.METHODS:We reviewed studies investigating the interrelations between high-sensitivity (hs) cTn results and sex, diagnoses, and outcome. Investigated populations included community-dwelling subjects and patients with stable angina, congestive heart failure, or acute chest pain including those with acute coronary syndromes.RESULTS:Men usually have higher hs-cTn concentrations compared with women, regardless of the assessed population or the applied assay. The distribution and prognostic implications of hs-cTn concentrations indicate that women have a broader cardiovascular risk panorama compared with men, particularly at lower hs-cTn concentrations. At higher concentrations, particularly above the 99th percentile, this variation is often attenuated. Sex-specific hs-cTn 99th percentiles have so far shown clinical net benefit in only 1 study assessing patients with chest pain. However, several methodological aspects need to be considered when interpreting study results, e.g., issues related to the determination of the 99th percentiles, the selection bias, and the lack of prospective and sufficiently powered analyses.CONCLUSIONS:Available studies do not show a consistent clinical superiority of sex-specific hs-cTn 99th percentiles. This may reflect methodological aspects. However, from a pathobiological perspective, the use of sex-specific hs-cTn 99th percentiles makes sense for the ruling in of myocardial infarction. We propose a new approach to hs-cTn 99th cutoffs taking into account the analytical properties of the used assays.
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3.
  • Eggers, Kai M., 1962-, et al. (författare)
  • Application of Cardiac Troponin in Cardiovascular Diseases Other Than Acute Coronary Syndrome
  • 2017
  • Ingår i: Clinical Chemistry. - : AMER ASSOC CLINICAL CHEMISTRY. - 0009-9147 .- 1530-8561. ; 63:1, s. 223-235
  • Forskningsöversikt (refereegranskat)abstract
    • BACKGROUND: Increased cardiac troponin concentrations in acute coronary syndrome (ACS) identify patients with ongoing cardiomyocyte necrosis who are at increased risk. However, with the use of more precise assays, cardiac troponin increases are commonly noted in other cardiovascular conditions as well. This has generated interest in the use of cardiac troponin for prognostic assessment and clinical management of these patients. In this review, we have summarized the data from studies investigating the implications of cardiac troponin concentrations in various acute and chronic conditions beyond ACS,, i.e., heart failure, myocarditis, Takotsubo cardiomyopathy, aortic dissection, supraventricular arrhythmias, valve disease, pulmonary arterial hypertension, stroke, and in the perioperative setting. CONTENT: Cardiac troponin concentrations are often detectable and frankly increased in non-ACS conditions, in particular when measured with high-sensitivity (hs) assays. With the exception of myocarditis and Takotsubo cardiomyopathy, cardiac troponin concentrations carry strong prognostic information, mainly with respect to mortality, or incipient and/or worsening heart failure. Studies investigating the prognostic benefit associated with cardiac troponin guided treatments however, are almost lacking and the potential role of cardiac troponin in the management of non-ACS conditions is not defined. SUMMARY: Increased cardiac troponin indicates increased risk for adverse outcome in patients with various cardiovascular conditions beyond ACS. Routine measurement of cardiac troponin concentrations can however, not be generally recommended unless there is a suspicion of ACS. Nonetheless, any finding of an increased cardiac troponin concentration in a patient without ACS should at least prompt the search for possible underlying conditions and these should be managed meticulously according to current guidelines to improve outcome.
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4.
  • Eggers, Kai M., 1962-, et al. (författare)
  • High-Sensitivity Cardiac Troponin-Based Strategies for the Assessment of Chest Pain Patients : A Review of Validation and Clinical Implementation Studies
  • 2018
  • Ingår i: Clinical Chemistry. - : American Association for Clinical Chemistry. - 0009-9147 .- 1530-8561. ; 64:11, s. 1572-1585
  • Forskningsöversikt (refereegranskat)abstract
    • BACKGROUND: The introduction of high-sensitivity cardiac troponin (hs-cTn) assays has improved the early assessment of chest pain patients. A number of hs-cTn-based algorithms and accelerated diagnostic protocols (ADPs) have been developed and tested subsequently. In this review, we summarize the data on the performance and clinical utility of these strategies. CONTENT: We reviewed studies investigating the diagnostic and prognostic performance of hs-cTn algorithms [level of detection (LoD) strategy, 0/1-h, 0/2-h, and 0/3-h algorithms) and of hs-cTn-based ADPs, together with the implications of these strategies when implemented as clinical routine. The LoD strategy, when combined with a nonischemic electrocardiogram, is best suited for safe rule-out of myocardial infarction and the identification of patients eligible for early discharge from the emergency department. The 0/1-h algorithms appear to identify most patients as being eligible for rule-out. The hs-cTn-based ADPs mainly focus on prognostic assessment, which is in contrast with the hs-cTn algorithms. They identify smaller proportions of rule-out patients, but there is increasing evidence from prospective studies on their successful clinical implementation. Such information is currently lacking for hs-cTn algorithms. CONCLUSIONS: There is a trade-off between safety and efficacy for different hs-cTn-based strategies. This trade-off should be considered for the intended strategy, along with its user-friendliness and evidence from clinical implementation studies. However, several gaps in knowledge remain. At present, we suggest the use of an ADP in conjunction with serial hs-cTn results to optimize the early assessment of chest pain patients. (C) 2018 American Association for Clinical Chemistry
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5.
  • Eggers, Kai M., 1962-, et al. (författare)
  • Prognostic Biomarkers in Acute Coronary Syndromes : Risk Stratification Beyond Cardiac Troponins
  • 2017
  • Ingår i: Current Cardiology Reports. - : SPRINGER. - 1523-3782 .- 1534-3170. ; 19:4
  • Forskningsöversikt (refereegranskat)abstract
    • Purpose of Review Cardiac troponin (cTn) plays an essential role for assessment of outcome in acute coronary syndrome (ACS). However, the prognostic value of cTn is not absolute. In this mini-review, we summarize the evidence on the utility of established biomarkers of left-ventricular dysfunction, hemodynamic stress, inflammation, and renal dysfunction for risk prediction beyond cTn in ACS. Recent Findings Only few biomarkers consistently demonstrate additive prognostic value to cTn levels. The B-type natriuretic peptides (NPs) and growth-differentiation factor-15 (GDF-15) are most promising in this regard. However, there are uncertainties regarding the role of these biomarkers for guidance of treatment decisions, and their prognostic increment to cTn levels measured with high-sensitivity assays is largely unknown. Summary The NPs and GDF-15 provide the strongest prognostic increment to cTn levels in ACS. However, the role of these biomarkers for clinical decision-making in contemporary settings has still to be defined.
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6.
  • Grip, Lars, 1952, et al. (författare)
  • From European to National guidelines on heart disease
  • 2011
  • Ingår i: Scandinavian Cardiovascular Journal. - : Informa UK Limited. - 1401-7431 .- 1651-2006. ; 45:1, s. 3-13
  • Forskningsöversikt (refereegranskat)abstract
    • Background/aims. Guidelines from the European Society of Cardiology are important tools for defining and establishing current standards of care for various heart diseases. The aim of the present paper is to describe the process of how these international guidelines may be transformed and implemented at a national level in Sweden. Methods/results. The structure and process behind the national guidelines for heart diseases in Sweden and their relationship to the underlying European guidelines are described and differences between the national and European levels highlighted. We also give examples of how the scientific values of health care measures are weighted against health economic perspectives and integrated in a prioritization process. Compared to the European guidelines, the Swedish national guidelines have a broader economic perspective and aim to ensure that health care is cost effective and provided to all Swedish citizens on equal terms. Discussion. When certain health care measures are implemented, the national process can result in other priorities than could be expected from the European guidelines alone. On the other hand, a forceful implementation may be facilitated by the societal context in which these national guidelines are produced.
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7.
  • Hammarsten, Ola, et al. (författare)
  • Possible mechanisms behind cardiac troponin elevations
  • 2018
  • Ingår i: Biomarkers. - 1354-750X .- 1366-5804. ; 23:8, s. 725-734
  • Forskningsöversikt (refereegranskat)abstract
    • Cardiac-specific troponins are elevated in blood following cardiac injury and are the preferred diagnostic biomarkers when acute myocardial infarction is suspected clinically. Cardiac troponin (cTn) elevations are also observed in clinical conditions without obvious connection to cardiac injury. Irrespective of the underlying condition, cTn elevation is linked to a poor prognosis, even if the elevation is stable over time. Here, we explore mechanisms that may lead to cTn elevations, including necrosis, apoptosis, necroptosis, cell wounds and decreased clearance. The aim is to broaden the perspective of how we interpret unexpected cTn elevations in patients. The cTn elevations may not be able to serve as direct proof of myocardial necrosis especially in the absence of a clear-cut reason for its release.Abbreviations: AMI: acute myocardial infarction; cTn: cardiac troponin; cTnI: cardiac troponin I; cTnT: cardiac troponin T; MLKL: mixed lineage kinase domain-like; TUNEL: terminal deoxynucleotidyl transferase nick end labeling.
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8.
  • Heo, Rachel Haeeun, et al. (författare)
  • Associations of Inflammatory Biomarkers With the Risk of Morbidity and Mortality After Cardiac Surgery : A Systematic Review and Meta-analysis
  • 2023
  • Ingår i: Canadian Journal of Cardiology. - : Elsevier. - 0828-282X .- 1916-7075. ; 39:11, s. 1686-1694
  • Forskningsöversikt (refereegranskat)abstract
    • Background: Although inflammatory biomarkers have been associated with cardiovascular events in nonsurgical settings, these associations have not been systematically addressed in patients undergoing cardiac surgery. This review aimed to evaluate the relationships of inflammatory markers with mortality and adverse cardiovascular events in patients undergoing cardiac surgery. Methods: Medline, Embase, and Central databases were systematically searched for studies reporting pre-or postoperative levels of inflammatory biomarkers in patients undergoing cardiac surgery. Outcomes of interest were postoperative mortality, nonfatal myocardial infarction, stroke, congestive heart failure, and major adverse cardiovascular events (MACE). Studies reporting multivariable adjusted risk estimates were included. Risk estimates were pooled with the use of random-effects models and reported as summary odds ratios (ORs).Results: Among 14,465 citations identified, 29 studies including 29,401 participants met the eligibility criteria. The average follow-up time after surgery was 31 months. Preoperative C-reactive protein (CRP) levels were associated with an increased risk of all-cause mortality (OR 1.88, 95% CI 1.60-2.20; I2 = 19%; 11 studies) and MACE (OR 1.73, 95% CI 1.34-2.24; I2 = 0%; 3 studies). CRP levels measured on postoperative day 6 (OR 7.4, 95% CI 2.90-18.88, 1 study) and day 10 (OR 11.8, 95% CI 3.50-39.78, 1 study) were associated with a higher risk of all-cause mortality. Less, but overall similar, information was available for other inflammatory biomarkers. Conclusions: In this large meta-analysis, inflammatory biomarkers measured before or after cardiac surgery were associated with mortality and adverse cardiovascular outcomes in patients undergoing cardiac surgery.
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9.
  • Kimenai, Dorien M., et al. (författare)
  • Sex-Specific Versus Overall Clinical Decision Limits for Cardiac Troponin I and T for the Diagnosis of Acute Myocardial Infarction : A Systematic Review
  • 2018
  • Ingår i: Clinical Chemistry. - : American Association for Clinical Chemistry. - 0009-9147 .- 1530-8561. ; 64:7, s. 1034-1043
  • Forskningsöversikt (refereegranskat)abstract
    • BACKGROUND: The overall clinical decision limits of high-sensitivity cardiac troponin I (hs-cTnI; 26 ng/L) and T (hs-cTnT; 14 ng/L) may contribute to underdiagnosis of acute myocardial infarction in women. We performed a systematic review to investigate sex-specific and overall 99th percentiles of hs-cTnI and hs-cTnT derived from healthy reference populations. CONTENT: We searched in PubMed and EMBASE for original studies, and by screening reference lists. Reference populations designed to establish 99th percentiles of hs-cTnI (Abbott) and/or hs-cTnT (Roche), published between January 2009 and October 2017, were included. Sex-specific and overall 99th percentile values of hs-cTnI and hs-cTnT were compared with overall clinical decision ranges (hs-cTnI, 23-30 ng/L; hs-cTnT, 13-25 ng/L). Twenty-eight studies were included in the systematic review. Of 16 hs-cTnI and 18 hs-cTnT studies, 14 (87.5%) and 11 (61.1%) studies reported lower femalespecific hs-cTn cutoffs than overall clinical decision ranges, respectively. Conversely, male-specific thresholds of both hs-cTnI and hs-cTnT were in line with currently used overall thresholds, particularly hs-cTnT (90% concordance). The variation of estimated overall 99th percentiles was much higher for hs-cTnI than hs-cTnT (29.4% vs 80.0% of hs-cTnI and hs-cTnT studies reported values within the current overall clinical decision range, respectively). SUMMARY: Our data show substantially lower femalespecific upper reference limits of hs-cTnI and hs-cTnT than overall clinical decision limits of 26 ng/L and 14 ng/L, respectively. The statistical approach strongly affects the hs-cTnI threshold. Downward adjustment of hs-cTn thresholds in women may be warranted to reduce underdiagnosis of acute myocardial infarction in women.
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10.
  • Krychtiuk, Konstantin A., et al. (författare)
  • Biomarkers of coagulation and fibrinolysis in acute myocardial infarction : a joint position paper of the Association for Acute Cardio Vascular Care and the European Society of Cardiology Working Group on Thrombosis
  • 2021
  • Ingår i: European Heart Journal. - : Oxford University Press. - 2048-8726 .- 2048-8734. ; 10:3, s. 343-355
  • Forskningsöversikt (refereegranskat)abstract
    • The formation of a thrombus in an epicardial artery may result in an acute myocardial infarction (AMI). Despite major advances in acute treatment using network approaches to allocate patients to timely reperfusion and optimal antithrombotic treatment, patients remain at high risk for thrombotic complications. Ongoing activation of the coagulation system as well as thrombin-mediated platelet activation may both play a crucial role in this context. Whether measurement of circulating biomarkers of coagulation and fibrinolysis could be useful for risk stratification in secondary prevention is currently not fully understood. In addition, measurement of such biomarkers could be helpful to identify thrombus formation as the leading mechanism for AMI. The introduction of biomarkers of myocardial injury such as high-sensitivity cardiac troponins made rule-out of AMI even more precise. However, elevated markers of myocardial injury cannot provide proof of a type 1 AMI, let alone thrombus formation. The combined measurement of markers of myocardial injury with biomarkers reflecting ongoing thrombus formation might be helpful for the fast and correct diagnosis of an atherothrombotic type 1 AMI. This position paper gives an overview of the current knowledge and possible role of biomarkers of coagulation and fibrinolysis for the diagnosis of AMI, risk stratification, and individualized treatment strategies in patients with AMI.
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