Table 6.

Comparison of national guidelines for the management of TAA in patients without any genetic predisposition.

Canadian society for vascular surgery	Japanese Circulation Society 2011 guidelines	ESC 2007 guidelines
“Intervention should be considered when the diameter of a thoracic aortic aneurysm reaches 5.5 cms in men, and 5.0 in women. Smaller aneurysms under surveillance typically grow by 10% per year. Faster growing aneurysms should be considered for intervention sooner than the usual operative threshold.” http://canadianvascular.ca	The following situations warrant surgical intervention: •Aneurysms with a maximum minor-axis diameter of 60 mm or greater •Aortic aneurysms accompanied by pain where the maximum minor-axis diameter is 50 to 60 mm	The following situations warrant surgical intervention: •Aortic root diameter greater than 55 mm. •“For patients who have an indication for surgery on the aortic valve, lower thresholds can be used for combining surgery on the ascending aorta.”
	(Group 2013)	(Vahanian, Baumgartner et al. 2007) [44]