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Sökning: L773:1015 9770 OR L773:1421 9786 > Hedblad Bo

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1.
  • Berntsson, John, et al. (författare)
  • Plasma Natriuretic Peptides and Incidence of Subtypes of Ischemic Stroke.
  • 2014
  • Ingår i: Cerebrovascular Diseases. - : S. Karger AG. - 1421-9786 .- 1015-9770. ; 37:6, s. 444-450
  • Tidskriftsartikel (refereegranskat)abstract
    • Background and Purpose: Natriuretic peptides predict poor outcomes in cardiovascular disease. However, the knowledge of their relationship to stroke is limited and prospective studies from the general population are few. The purpose of this study was to explore the relationship between N-terminal pro-brain natriuretic peptide (NT-proBNP) and midregional pro-atrial natriuretic peptide (MR-proANP) plasma levels and the risk for ischemic stroke and its subtypes. Methods: NT-proBNP and MR-proANP were measured in fasting blood samples from 4,862 subjects (40.2% men, mean age 57.5 ± 6.0 years) without cardiovascular disease from the Malmö Diet and Cancer Study, a prospective, population-based study in Sweden. Incidence of ischemic stroke was monitored over a mean follow-up of 14.9 ± 3.0 years. Stroke cases were etiologically classified according to the TOAST classification. Cox proportional-hazards regression was used to study the incidence of stroke in relationship to NT-proBNP and MR-proANP. Results: During follow-up, 227 had a first-ever ischemic stroke (large-artery atherosclerosis, n = 35; cardioembolic stroke, n = 44; small-artery occlusion, n = 80; undetermined cause, n = 68). In the age- and sex-adjusted model, only NT-proBNP was associated with total ischemic stroke. This association was completely explained by an increased incidence of cardioembolic stroke. Adjusted for cardiovascular risk factors (age, sex, hypertension, diabetes, smoking, body mass index and low-density lipoprotein cholesterol), the hazard ratios (HRs, 95% confidence interval, 95% CI) for cardioembolic stroke were 1.00 (reference), 1.42 (0.34-6.00), 2.79 (0.77-10.12) and 5.64 (1.66-19.20), respectively, for the 1st, 2nd, 3rd and 4th quartiles of NT-proBNP. The corresponding HRs (95% CIs) for quartiles of MR-proANP were 1.00 (reference), 1.83 (0.55-6.14), 1.20 (0.33-4.34) and 3.96 (1.31-11.99), respectively. In total, 335 (6.9%) subjects were diagnosed with atrial fibrillation during follow-up. Among the cardioembolic stroke cases, 30% were diagnosed with atrial fibrillation before the stroke event and another 36% within 6 months after the stroke. Of the cardioembolic stroke cases with atrial fibrillation, 59% were in the top quartile of NT-proBNP, 69% in the top quartile of MR-proANP and 79% were either in the top quartile of NT-proBNP or in the top quartile of MR-proANP. Conclusion: High plasma levels of NT-proBNP and MR-proANP are associated with a substantially increased risk of cardioembolic stroke, but not with other subtypes of ischemic stroke. The results suggest that assessment of stroke risk, including electrocardiography, is warranted in subjects with high NT-proBNP or MR-proANP. © 2014 S. Karger AG, Basel.
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2.
  • Li, Cairu, et al. (författare)
  • Incidence of Ischemic Stroke in Relation to Asymptomatic Carotid Artery Atherosclerosis in Subjects with Normal Blood Pressure. A Prospective Cohort Study.
  • 2008
  • Ingår i: Cerebrovascular Diseases. - : S. Karger AG. - 1421-9786 .- 1015-9770. ; 26:3, s. 297-303
  • Tidskriftsartikel (refereegranskat)abstract
    • Background:Approximately 10-20% of stroke cases have normal blood pressure (BP). The objective of this study was to explore whether the risk of ischemic stroke is related to the carotid intima-media thickness (CIMT) and atherosclerotic lesions in a cohort of subjects with normal BP. Methods:Common CIMT and the presence of carotid plaque were determined by B-mode ultrasound in 6,103 subjects, randomly recruited between 1991 and 1994 from the 'Malmo Diet and Cancer' study. Normal BP was defined as BP <140/90 mm Hg, without pharmacological treatment for hypertension. Carotid artery atherosclerosis (CAA) was defined as CIMT >/=0.81 mm or/and the presence of plaque (i.e. focal CIMT >1.2 mm). The incidence of ischemic stroke was followed over a mean period of 10.7 years. Results:A total of 2,228 subjects (791 men and 1,437 women) had normal BP. During the follow-up, 34 patients suffered a first-ever ischemic stroke (crude incidence: 1.51/1,000 person-years). The Prevalences of CAA in subjects with and without stroke were 68.6 and 39.0%, respectively. It was estimated that the subjects with CAA had a 3-fold higher risk of ischemic stroke (RR: 3.33, 1.37-8.14), independent of other cardiovascular risk factors. Each increase of 1 standard deviation (0.13 mm) in CIMT increased the stroke risk by 43% (RR: 1.43, 1.002-2.02). Several factors were found to have a notable relation with CAA, including age, male sex, smoking, diabetes, systolic BP, HbA1c (glycosylated hemoglobin) and cholesterol. Conclusions: CIMT and atherosclerotic lesions are independent clinical markers for ischemic stroke among normotensive individuals.
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3.
  • Li, Cairu, et al. (författare)
  • Long-Term Stroke Prognosis in Relation to Medical Prevention and Lifestyle Factors. A Prospective Population-Based Study.
  • 2008
  • Ingår i: Cerebrovascular Diseases. - : S. Karger AG. - 1421-9786 .- 1015-9770. ; 25:6, s. 526-532
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Few studies have focused on the quality of secondary prevention among long-term stroke survivors. This study explores the intensity of medical intervention and the impact of lifestyle and other risk factors on the long-term stroke prognosis in a population-based setting of Swedish individuals with a history of stroke. Methods: A population-based cohort (n = 28,449) in Malmo, Sweden, was recruited during 1991-1996. Of them, 394 had a history of stroke, according to self-reported physician diagnosis and record linkage with the Stroke Register in Malmo. Information on medical intervention and lifestyle factors was collected from the questionnaire. The incidence of a cardiac event (CE) or recurrent stroke was followed for 7.5 years after the baseline examination. Results: The prevalence of hypertension was 79.4% in patients with a history of stroke. Only half of them received blood-pressure (BP)-lowering medication, and 11.5% of them achieved a BP <140/90 mm Hg. Most patients with hypercholesterolemia did not receive lipid-lowering medication. Antithrombotic agents were used by 38%. Nearly one third were still smoking, and two thirds were overweight or obese. Compared to subjects without a history of stroke, the risk of cardiovascular disease (CVD, i.e. CE or recurrent stroke) was significantly higher in stroke survivors. The increased CVD risk was significantly associated with elevated BP levels. No significant relationship was found between CVD risk and lifestyle risk factors reported at the time of baseline examination. Conclusions: There was a large gap between recommended secondary preventive measures and their implementation in subjects with a history of stroke. Achieving recommended hypertension control may prevent a substantial proportion of the CE and recurrent strokes in this group.
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