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We aimed to analyze whether opisthenar microvessel area (OMA, measured with Optical Coherence Tomography (OCT) angiography) was associated with blood pressure (BP), arterial stiffness and whether OMA can predict arterial stiffness in hypertensive (HTN) patients. Results from 90 participants showed that BP, brachial-ankle pulse wave velocity (baPWV) and ankle brachial index (ABI) were significantly higher but OMA (in control, with cold- and warm-stimulation, NT, CST, HST and the differences, CSD, HSD) were significantly reduced in HTN group (n = 36) compared to non-HTN (n = 54). NT, CST, HST and HSD showed negative correlations with baPWV and ABI in all participants, female (n = 47) and male group (n = 43), but the correlation was absent when the participants were divided into HTN and non-HTN. Logistic Regression analysis showed that only baPWV was a significant risk factor for HSD (OR 19.7, 95%CI 4.959–78.733,  p    0.05). Receiver Operating Characteristics analysis for HSD was 0.781, 0.804, 0.770, respectively. HSD &lt; 9439.5 μm 2  predicted high BP and arterial stiffness (95% CI in all participants: baPWV, 0.681–0.881, SBP, 0.709–0.900, DBP, 0.672–0.867,  p  &lt; 0.001). These results suggest that OMA is a sensitive index to predict arterial stiffness in HTN population.

Opisthenar microvessel area as a sensitive predictive index of arterial stiffness in hypertensive patients