Evaluation of the Canadian Clinical Practice Guidelines Risk Prediction Tool for Acute Aortic Syndrome: The RIPP Score

Table 1

RIPP score. A consensus-based clinical decision aid to help guide investigation for acute aortic syndrome based on risk factors, impression, physical exam, and description of pain. Score <1 means no further investigation, and >1 means further investigation required.

RIPP score
Risk factor	No risk factor	0 points
	Nonaneurysmal risk factor	1 points
	Aortic aneurysm	2 points
Impression	Alternative diagnosis likely	−1 points
	Unsure	0 points
	AAS most likely	2 points
Physical exam	No physical exam findings	0 points
	Any physical exam findings	2 points
Pain	No high risk pain features	0 points
	1 or 2 high risk pain features	1 points
	>2 high risk pain features	2 points