The only reported association between celiac disease and cardiological problems is with dilated cardiomyopathy. See this case for a review and a large epidemiological investigation: Emilsson L, Andersson B, Elfström P, Green PH, Ludvigsson JF. Risk of idiopathic dilated cardiomyopathy in 29 000 patients with celiac disease. J Am Heart Assoc. 2012 Jun;1(3):e001594. doi: 10.1161/JAHA.112.001594…. Read more »