Please use this identifier to cite or link to this item:
|Title:||Retinal vascular fractal and blood pressure in a multiethnic population||Authors:||Sng, C.C.A.
|Issue Date:||Oct-2013||Citation:||Sng, C.C.A., Wong, W.L., Cheung, C.Y., Lee, J., Tai, E.S., Wong, T.Y. (2013-10). Retinal vascular fractal and blood pressure in a multiethnic population. Journal of Hypertension 31 (10) : 2036-2042. ScholarBank@NUS Repository. https://doi.org/10.1097/HJH.0b013e328362c201||Abstract:||Objective(s): To examine the effect of blood pressure (BP) on retinal vascular fractal dimension (Df), a measure of microvascular network complexity and density in a multiethnic cohort. Methods: A population-based study of 3876 Chinese, Malay and Indian participants in Singapore. Retinal Df was measured using a computer-based program from digital retinal photographs. Associations between retinal Df and mean arterial BP (MABP) in the whole cohort and in each racial group were analysed using linear regression analysis. Logistic regression was used to examine the association between retinal Df and hypertension status. Results: The mean retinal Df of the study population was 1.45 (standard deviation 0.03). After adjustment for age, sex, race, diabetes, BMI, cholesterol and creatinine levels, persons with smaller Df had higher MABP (mean difference MABP was 6.18mmHg comparing lowest to highest Df quartiles, P<0.001). This was similar in Chinese, Malay and Indian persons [mean difference 6.40 (P<0.001), 4.72 (P=0.011) and 6.62 (P<0.001) mmHg, respectively]. Persons with smaller retinal Df were more likely to have uncontrolled treated or untreated hypertension [odds ratio 1.79 (P=0.003) and 2.60 (P=0.003), respectively, comparing lowest to highest Df quartiles] than those with no hypertension; this relationship was not seen comparing persons with controlled treated hypertension with no hypertension (odds ratio 1.01, P=0.972). Conclusion: Hypertension was associated with a sparser retinal vascular network, which was similar across different racial/ethnic groups and most apparent in those with uncontrolled or untreated hypertension. These data suggest that microvascular remodelling can be quantified by measuring retinal vasculature. © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins.||Source Title:||Journal of Hypertension||URI:||http://scholarbank.nus.edu.sg/handle/10635/53489||ISSN:||02636352||DOI:||10.1097/HJH.0b013e328362c201|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Nov 19, 2020
WEB OF SCIENCETM
checked on Nov 19, 2020
checked on Nov 24, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.