Clinical features

Why?

Aortic regurgitation makes a proximal aortic dissection more likely

Patient	Target Disorder and Reference Standard	Diagnostic Test	LR+ (95% CI)	Post-test Probability	LR- (95% CI)	Post-test Probability
suspected aortic dissection undergoing angiography c (pre-test probability: 1%)	proximal aortic dissection (angiography, surgery or autopsy)	aortic regurgitation	5.7 (3.3 to 9.6)	5.7%	0.39 (0.27 to 0.56)	0.39%