BACKGROUND: The use of radial augmentation index (rAI) as an indicator of vascular disease was investigated in the vascular imaging laboratory in a regional hospital. AIMS: The aim of this study was to investigate whether a correlation exists between ankle-brachial pressure index (ABPI) and rAI in normal subjects, patients with peripheral obstructive arterial disease, and diabetic patients. METHODS: A group of 46 patients and 14 controls had ABPI and rAI measured and factors affecting AI were assessed. RESULTS: rAI was found to have a negative correlation with ABPI (Spearman's ρ = -0.513, p < 0.01). There was significant increase in the rAI scores of diabetic patients compared to normal patients (normal median was 64% lower than diabetic median, p < 0.01) and in peripheral obstructive vascular disease patients compared to normal (normal median 69% lower, p < 0.001). Of the various affecting factors, age stood out with rAI having a positive correlation to age (Spearman's ρ = 0.68, p < 0.01). CONCLUSIONS: The augmentation index appears be a significant indicator of cardiovascular disease and may be a useful tool in the diagnosis of vascular pathology.
BACKGROUND: The use of radial augmentation index (rAI) as an indicator of vascular disease was investigated in the vascular imaging laboratory in a regional hospital. AIMS: The aim of this study was to investigate whether a correlation exists between ankle-brachial pressure index (ABPI) and rAI in normal subjects, patients with peripheral obstructive arterial disease, and diabeticpatients. METHODS: A group of 46 patients and 14 controls had ABPI and rAI measured and factors affecting AI were assessed. RESULTS: rAI was found to have a negative correlation with ABPI (Spearman's ρ = -0.513, p < 0.01). There was significant increase in the rAI scores of diabeticpatients compared to normal patients (normal median was 64% lower than diabetic median, p < 0.01) and in peripheral obstructive vascular diseasepatients compared to normal (normal median 69% lower, p < 0.001). Of the various affecting factors, age stood out with rAI having a positive correlation to age (Spearman's ρ = 0.68, p < 0.01). CONCLUSIONS: The augmentation index appears be a significant indicator of cardiovascular disease and may be a useful tool in the diagnosis of vascular pathology.
Authors: Stephane Laurent; John Cockcroft; Luc Van Bortel; Pierre Boutouyrie; Cristina Giannattasio; Daniel Hayoz; Bruno Pannier; Charalambos Vlachopoulos; Ian Wilkinson; Harry Struijker-Boudier Journal: Eur Heart J Date: 2006-09-25 Impact factor: 29.983
Authors: Beatriz L Rodriguez; Wilfred Y Fujimoto; Elizabeth J Mayer-Davis; Giuseppina Imperatore; Desmond E Williams; Ronny A Bell; R Paul Wadwa; Shana L Palla; Lenna L Liu; Ann Kershnar; Stephen R Daniels; Barbara Linder Journal: Diabetes Care Date: 2006-08 Impact factor: 19.112
Authors: Charlotte Manisty; Jamil Mayet; Robyn J Tapp; Peter S Sever; Neil Poulter; Simon A McG Thom; Alun D Hughes Journal: Hypertension Date: 2009-08-31 Impact factor: 10.190