A new tool to assess retinal vessel caliber. Reliability and validity of measures and their relationship with cardiovascular risk

被引:21
作者
Garcia-Ortiz, Luis [1 ]
Recio-Rodriguez, Jose I. [1 ]
Parra-Sanchez, Javier [1 ]
Gonzalez Elena, Luis J. [1 ]
Patino-Alonso, Maria C. [1 ]
Agudo-Conde, Cristina [1 ]
Rodriguez-Sanchez, Emiliano [1 ]
Gomez-Marcos, Manuel A. [1 ]
机构
[1] IBSAL, SACYL, Primary Care Res Unit La Alamedilla, Salamanca, Spain
关键词
arterial stiffness; arteriolar-venular ratio; cardiovascular disease; carotid atherosclerosis; microalbuminuria; CORONARY-HEART-DISEASE; INTIMA-MEDIA THICKNESS; TARGET ORGAN DAMAGE; ATHEROSCLEROSIS RISK; VASCULAR CALIBER; MICROVASCULAR ABNORMALITIES; CAROTID-ARTERY; ARTERIOLAR; DIAMETERS; HYPERTENSION;
D O I
10.1097/HJH.0b013e3283506628
中图分类号
R6 [外科学];
学科分类号
1002 ; 100210 ;
摘要
Objective: To analyze the reliability and validity of a semiautomated tool for assessing retinal vessel caliber and to describe the relationship of measures taken to cardiovascular risk and target organ damage. Methods: A total of 210 patients aged 34-75 years were selected with retinography. Retinal photographs were digitized, and superior and inferior temporal vessels were measured in an area 0.5-1 disk diameter from the optic disc with semiautomated software [arteriole/venule index (AVIx) calculator]. AVIx was also estimated. Vascular damage was assessed using carotid intima-media thickness and pulse wave velocity, cardiac damage using Cornell voltage-duration product, renal damage using the glomerular filtration rate and microalbuminuria, and cardiovascular risk with the Framingham score. Results: Interobserver intraclass correlation coefficient (ICC) ranged from 0.96 [95% confidence interval (CI) 0.94-0.97] to 0.99 (95% CI 0.98-0.99), and intraobserver ICC ranged from 0.97 (95% CI 0.94-0.98) to 0.99 (95% CI 0.99-0.99). In the Bland-Altman plot, the limit of interobserver agreement was -0.009 (0.066 to -0.086) in right AVIx and -0.001 (0.083 to -0.085) in left AVIx, whereas the limit of intraobserver agreement for overall AVIx was -0.005 (-0.057 to -0.047). Cardiovascular risk and albumin-creatinine ratio were higher in the first tertile of AVIx as compared with the other two (P<0.05). In multiple regression, AVIx and venule caliber, but not artery caliber, behaved as predictors of cardiovascular risk and microalbuminuria. Conclusion: This tool showed a high intraobserver and interobserver reliability, and results of the validity analysis agree with those from large studies in estimation of cardiovascular risk and evaluation of target organ damage.
引用
收藏
页码:770 / 777
页数:8
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