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Changes in subclinical organ damage vs. in Framingham risk score for assessing cardiovascular risk reduction during continued antihypertensive treatment: a LIFE substudy
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Family Medicine.
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2011 (English)In: Journal of Hypertension, ISSN 0263-6352, E-ISSN 1473-5598, Vol. 29, no 5, 997-1004 p.Article in journal (Refereed) Published
Abstract [en]

Aim: To investigate whether in-treatment measurements of subclinical organ damage (SOD) assessed by elevated urine albumin/creatinine ratio (UACR) or electrocardiographic left ventricular hypertrophy improved the prediction of the composite cardiovascular endpoint of cardiovascular death, nonfatal myocardial infarction and stroke beyond in-treatment Framingham risk score (FRS).

Methods: Excluding patients with a composite cardiovascular endpoint within the first year of treatment, 598 endpoints occurred in 6460 patients from the Losartan Intervention For Endpoint reduction in hypertension (LIFE) study with baseline and 1 year values for UACR, left ventricular hypertrophy by electrocardiography and FRS available.

Results: Using Cox-regression analyses, FRS1year [hazard ratio = 1.006 (0.98-1.04)] did not predict the endpoint independently of history of cardiovascular disease [hazard ratio = 1.76 (1.49-2.08)], FRSbaseline [hazard ratio = 1.07 (1.04-1.11)], UACR(baseline) [hazard ratio = 1.15 (1.07-1.23), all three P < 0.001], Sokolow-Lyon(baseline) [hazard ratio = 1.01 (1.006-1.02), P < 0.01] and treatment allocation, whereas Cornell product(1yea)r [hazard ratio = 1.01 (1.006-1.02), P < 0.001] and to some degree UACR(1year) [hazard ratio = 1.05 (0.99-1.10), P = 0.09] predicted the endpoint independently of history of cardiovascular disease [hazard ratio = 1.71 (1.44-2.02)], FRSbaseline [hazard ratio = 1.08 (1.06-1.10)], Sokolow-Lyon(baseline) [hazard ratio = 1.01 (1.007-1.02), both P < 0.001], UACR(baseline) [hazard ratio = 1.11 (1.03-1.20), P < 0.01] and treatment allocation decreasing -2 Log likelihood significantly (P < 0.01).Presence of left ventricular hypertrophy by Cornell product1year or UACR(1year) at least 1 mmol/l [hazard ratio = 1.40 (1.15-1.70), P = 0.001] but not FRS1year above the median baseline value of 20 [hazard ratio = 1.22 (0.94-1.57), not significant] was associated with higher risk of subsequent endpoint after adjustment for history of cardiovascular disease [hazard ratio = 1.82 (1.54-2.15)], FRSbaseline at least 20 [hazard ratio = 1.67 (1.30-2.16)], left ventricular hypertrophy by Sokolow-Lyonbaseline or UACR(baseline) at least 1 mmol/l [hazard ratio = 1.61 (1.33-1.94), all P < 0.001] and treatment allocation [hazard ratio = 0.93 (0.79-1.09), not significant]. In contrast to FRS1year at least 20 decreased, SOD1year decreased -2Log likelihood significantly (P < 0.01).

Conclusion: Cornell product(1year) and UACR(1year) improved in contrast to FRS1year risk prediction based on FRSbaseline, Sokolow-Lyon(baseline) and UACR(baseline) significantly in LIFE patients during antihypertensive treatment.

Place, publisher, year, edition, pages
2011. Vol. 29, no 5, 997-1004 p.
Keyword [en]
albuminuria, electrocardiography, Framingham risk score, hypertension, left ventricular hypertrophy, risk factors
National Category
Cardiac and Cardiovascular Systems
URN: urn:nbn:se:umu:diva-104457DOI: 10.1097/HJH.0b013e328344daa3ISI: 000289276600026PubMedID: 21358415OAI: diva2:823749
Available from: 2015-06-18 Created: 2015-06-11 Last updated: 2015-06-18Bibliographically approved

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