286 research outputs found

    A Fast-Track Referral System for Skin Lesions Suspicious of Melanoma:Population-Based Cross-Sectional Study from a Plastic Surgery Center

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    Introduction. To minimize delay between presentation, diagnosis, and treatment of cutaneous melanoma (CM), a national fast-track referral system (FTRS) was implemented in Denmark. The aim of this study was to analyze the referral patterns to our department of skin lesions suspicious of melanoma in the FTRS. Methods. Patients referred to the Department of Plastic Surgery and Breast Surgery in Zealand University Hospital were registered prospectively over a 1-year period in 2014. A cross-sectional study was performed analyzing referral patterns, including patient and tumor characteristics. Results. A total of 556 patients were registered as referred to the center in the FTRS for skin lesions suspicious of melanoma. Among these, a total of 312 patients (56.1%) were diagnosed with CM. Additionally, 41 (7.4%) of the referred patients were diagnosed with in situ melanoma. Conclusion. In total, 353 (63.5%) patients had a malignant or premalignant melanocytic skin lesion. When only considering patients who where referred without a biopsy, the diagnostic accuracy for GPs and dermatologists was 29% and 45%, respectively. We suggest that efforts of adequate training for the referring physicians in diagnosing melanocytic skin lesions will increase diagnostic accuracy, leading to larger capacity in secondary care for the required treatment of malignant skin lesions

    Foundation of the East Bridge

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    Overlap between angina without obstructive coronary artery disease and left ventricular diastolic dysfunction with preserved ejection fraction

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    <div><p>Background</p><p>A link between angina with no obstructive coronary artery disease (CAD) and heart failure with preserved left ventricular ejection fraction has been proposed, but evidence in support of this is lacking. In a cross-sectional study, we investigated whether left ventricular diastolic function in women with angina pectoris and no obstructive CAD differed from a reference population.</p><p>Methods</p><p>We included 956 women with angina and <50% coronary artery stenosis at invasive coronary angiography. Women with cardiovascular risk factors, but no history of chest pain or cardiac disease served as controls (n = 214). Left ventricular diastolic function was assessed by transthoracic echocardiography.</p><p>Results</p><p>The women with angina were slightly older, had higher body mass index, higher heart rate, and more had diabetes compared with controls while systolic blood pressure was lower. In age-adjusted analyses, angina patients had significantly lower E/A (Estimated difference -0.13, 95% CI: -0.17; -0.08), higher left ventricular mass index (5.73 g/m<sup>2</sup>, 95% CI: 3.71; 7.75), left atrial volume index (2.34 ml/m<sup>2</sup>, 95% CI: 1.23; 3.45) and E/e’ (0.68, 95% CI: 0.30; 1.05) and a larger proportion had higher estimated left ventricular filling pressure (17% versus 6%, p = 0.001). No between group differences were seen for e’ or deceleration time. After adjustment for known cardiovascular risk factors, between group differences for echocardiographic parameters remained statistically significant.</p><p>Conclusions</p><p>Patients with angina and no obstructive CAD had a more impaired left ventricular diastolic function compared with an asymptomatic reference population. This suggests some common pathophysiological pathway between the two syndromes.</p></div

    Detection of increased pyruvate dehydrogenase flux in the human heart during adenosine stress test using hyperpolarized [1-13C]pyruvate cardiovascular magnetic resonance imaging

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    BACKGROUND: Hyperpolarized (HP) [1-(13)C]pyruvate cardiovascular magnetic resonance (CMR) imaging can visualize the uptake and intracellular conversion of [1-(13)C]pyruvate to either [1-(13)C]lactate or (13)C-bicarbonate depending on the prevailing metabolic state. The aim of the present study was to combine an adenosine stress test with HP [1-(13)C]pyruvate CMR to detect cardiac metabolism in the healthy human heart at rest and during moderate stress. METHODS: A prospective descriptive study was performed between October 2019 and August 2020. Healthy human subjects underwent cine CMR and HP [1-(13)C]pyruvate CMR at rest and during adenosine stress. HP [1-(13)C]pyruvate CMR images were acquired at the mid-left-ventricle (LV) level. Semi-quantitative assessment of first-pass myocardial [1-(13)C]pyruvate perfusion and metabolism were assessed. Paired t-tests were used to compare mean values at rest and during stress. RESULTS: Six healthy subjects (two female), age 29 ± 7 years were studied and no adverse reactions occurred. Myocardial [1-(13)C]pyruvate perfusion was significantly increased during stress with a reduction in time-to-peak from 6.2 ± 2.8 to 2.7 ± 1.3 s, p = 0.02. This higher perfusion was accompanied by an overall increased myocardial uptake and metabolism. The conversion rate constant (k(PL)) for lactate increased from 11 ± 9 *10(–3) to 20 ± 10 * 10(–3) s(−1), p = 0.04. The pyruvate oxidation rate (k(PB)) increased from 4 ± 4 *10(–3) to 12 ± 7 *10(–3) s(−1), p = 0.008. This increase in carbohydrate metabolism was positively correlated with heart rate (R(2) = 0.44, p = 0.02). CONCLUSIONS: Adenosine stress testing combined with HP [1-(13)C]pyruvate CMR is feasible and well-tolerated in healthy subjects. We observed an increased pyruvate oxidation during cardiac stress. The present study is an important step in the translation of HP [1-(13)C]pyruvate CMR into clinical cardiac imaging. Trial registration EUDRACT, 2018-003533-15. Registered 4th of December 2018, https://www.clinicaltrialsregister.eu/ctr-search/search?query=2018-003533-1

    Cardiorespiratory fitness, cardiovascular workload and risk factors among cleaners; a cluster randomized worksite intervention

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    BACKGROUND: Prevalence of cardiovascular risk factors is unevenly distributed among occupational groups. The working environment, as well as lifestyle and socioeconomic status contribute to the disparity and variation in prevalence of these risk factors. High physical work demands have been shown to increase the risk for cardiovascular disease and mortality, contrary to leisure time physical activity. High physical work demands in combination with a low cardiorespiratory fitness infer a high relative workload and an excessive risk for cardiovascular mortality. Therefore, the aim of this study is to examine whether a worksite aerobic exercise intervention will reduce the relative workload and cardiovascular risk factors by an increased cardiorespiratory fitness. METHODS/DESIGN: A cluster-randomized controlled trial is performed to evaluate the effect of the worksite aerobic exercise intervention on cardiorespiratory fitness and cardiovascular risk factors among cleaners. Cleaners are eligible if they are employed ≥ 20 hours/week, at one of the enrolled companies. In the randomization, strata are formed according to the manager the participant reports to. The clusters will be balanced on the following criteria: Geographical work location, gender, age and seniority. Cleaners are randomized to either I) a reference group, receiving lectures concerning healthy living, or II) an intervention group, performing worksite aerobic exercise “60 min per week”. Data collection will be conducted at baseline, four months and 12 months after baseline, at the worksite during working hours. The data collection will consist of a questionnaire-based interview, physiological testing of health and capacity-related measures, and objective diurnal measures of heart rate, physical activity and blood pressure. Primary outcome is cardiorespiratory fitness. DISCUSSION: Information is lacking about whether an improved cardiorespiratory fitness will affect the cardiovascular health, and additionally decrease the objectively measured relative workload, in a population with high physical work demands. Previous intervention studies have lacked robust objective measurements of the relative workload and physical work demands. This study will monitor the relative workload and general physical activity before, during after the intervention, and contribute to the understanding of the previously observed opposing effects on cardiovascular health and mortality from occupational and leisure time physical activity. TRIAL REGISTRATION: The study is registered as ISRCTN86682076
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