1. The Futility of Surveillance for Old and Small Aneurysms
Mark Rockley, MD, Dominic Leblanc, MD, Prasad Jetty, MD 
Journal of Vascular Surgery 
Volume 68, Issue 3, (September 2018)
DOI: /j.jvs
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2. Fig 1
Kaplan-Meier curves and hazard ratios (HRs) demonstrating freedom from reaching (A) sex-specific threshold-sized aneurysm and (B) aortic event (AE; threshold-sized aneurysm, elective abdominal aortic aneurysm [AAA] repair, or ruptured AAA repair). The overall HR of the young cohort (<80 years old), compared with the octogenarian cohort, of reaching a threshold-sized aneurysm or aortic event is 1.98 (95% confidence interval [CI], ) and 1.93 (95% CI, ), respectively. The HRs stratified for each enrollment AAA size are also presented (threshold-sized AAA: HR = 2.75 [95% CI, ] if enrollment AAA was cm and HR = 1.94 [95% CI, ] if enrollment AAA was cm; aortic event: HR = 3.11 [95% CI, ] if enrollment AAA was cm and HR = 1.86 [95% CI, ] if enrollment AAA was cm). Cox proportional hazards modeling adjusted for sex because female sex was significantly associated with an increased hazard of reaching threshold-sized aneurysm (HR, 2.91; 95% CI, ) and aortic event (HR, 1.99; 95% CI, ).
Journal of Vascular Surgery  , DOI: ( /j.jvs )
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3. Fig 2
Incidence of abdominal aortic aneurysm (AAA) repair and resulting cost-effectiveness analysis. Groups are stratified by enrollment age and size of AAA at time of enrollment. A, When a threshold-sized AAA was reached, octogenarians were less likely to undergo elective AAA repair than their younger counterparts (overall relative risk, 0.52; 95% confidence interval, ). B, Repair of ruptured AAA for patients in the surveillance program was rare, and differences were not statistically significant. C, Cost-effectiveness analysis incorporates a base cost of $89.20 for each surveillance ultrasound (Ontario Health Insurance Plan: code H 2, $57.00 technical cost; code P J202, $32.20 professional cost). D, Whereas the cost of surveillance to identify threshold-sized AAA was comparable between age cohorts, there was substantially more discrepancy in the cost of surveillance to prompt elective AAA repair.
Journal of Vascular Surgery  , DOI: ( /j.jvs )
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