SMOKING AND GROWTH-RATE OF SMALL ABDOMINAL AORTIC-ANEURYSMS

Smoking is an important risk factor for abdominal aortic aneurysm. Lim iting the growth rate of small aneurysms has the potential to prevent them reaching a size at which surgical repair is considered. In 43 pat ients, with small aneurysms, growth rates were studied by serial ultra sound over 3 years. The median expansion rate of these small aneurysms was 0.13 cm per year. Growth rates were higher in those who continued to smoke (0.16 vs 0.09 cm per year in those who no longer smoked, p = 0.038). Higher growth rates were significantly correlated with the co ncentration of serum cotinine. Stopping smoking could reduce the growt h rate of small abdominal aortic aneurysms.