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Table 3 Validation of severity parameters for AAA rupture prediction

From: Analysis and computer program for rupture-risk prediction of abdominal aortic aneurysms

Reference Model #1 [45] Model #2 [29] Model #3 [23]
Systolic pressure (mmHg) 188 128 150
Diastolic pressure (mmHg) 90 88 85
Maximum AAA diameter (cm) 5.5 6.1 6.36
AAA length (cm) 10.8 8.4 10*
AAA wall thickness (cm) 0.19 0.18 0.2*
Diameter expansion (cm/year) 0.43 0.54 0.61
Diameter of infrarenal artery (cm) 2.0 2.03 2.0
Asymmetry index β 0.9 0.33 N/A
ILT-AAA area ratio α N/A 0.54 N/A
Stiffness decrease (% per year) N/A N/A 0.21
Severity parameter (SP) 0.5 0.6 0.75
Risk level Elective repair Elective repair Possible rupture
Patient status (clinical) Waiting for repair Waiting for repair Ruptured
  1. * The clinical data were not available and hence typical values were assumed.