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  • Title: Declining institutional memory of open abdominal aortic aneurysm repair.
    Author: Kinio A, Ramsay T, Jetty P, Nagpal S.
    Journal: J Vasc Surg; 2021 Mar; 73(3):889-895. PubMed ID: 32712346.
    Abstract:
    OBJECTIVE: Since its introduction, endovascular aneurysm repair (EVAR) has become a mainstay in the treatment of abdominal aortic aneurysms (AAAs), resulting in the decline of open aneurysm repairs. The objective of this study was to determine whether reduced open aneurysm repair frequency has led to a reduction in perioperative efficiency and increase in postsurgical complications. METHODS: A retrospective cohort study compared perioperative data and complications of 49 consecutive juxtarenal AAA (<1-cm neck) open repairs performed between 2014 and 2017 and 53 consecutive juxtarenal AAA controls (2005-2007) at The Ottawa Hospital. There was no change in surgical personnel during this 10-year comparison. RESULTS: The Ottawa Hospital experienced a 61% decline in the number of open AAA repairs between the two time periods examined; 541 open AAA repairs and 86 EVARs were performed between 2005 and 2007, whereas 358 open AAA repairs and 385 EVARs were performed between 2014 and 2017. Age of participants significantly decreased in the 2014 to 2017 group (P = .01), as did the number of women undergoing open juxtarenal AAA repair (P = .05). Total operating room time and anesthesia time were longer in the 2014-2017 group (P = .02; P = .01), whereas surgical times remained consistent (P = .13). Suprarenal clamp time and blood loss during the procedure were decreased in the 2014-2017 group (P < .01; P < .01). Intensive care unit stay and overall hospital stay were not significantly different between groups (P = .77; P = .87); however, there were large standard deviations observed for the 2014-2017 group. As well, 18.4% of patients in the 2014-2017 group experienced postsurgical complications of Clavien-Dindo grade IIIa or higher compared with 11.3% of patients in the historical control group (P = .07). Mortality also trended toward an increase in the 2014-2017 group (P = .43). CONCLUSIONS: The reduced rate of open repair performance at The Ottawa Hospital reflects the global trend toward EVAR. Anesthesia and operating room times increased during the period examined, reflecting a possible loss of expertise in the last decade. Complications also increased during this time for anatomically similar patients. Taken together, these findings may reflect a decreased institutional familiarity with open aneurysm repair and postsurgical care.
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