Effect of Suprarenal Aortic Cross-Clamping:– Juxtarenal vs. Infrarenal Short and/or Large Neck Abdominal Aortic Aneurysm –

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Background:Renal insufficiency is the most frequent complication of surgeries that involve suprarenal aortic cross-clamping. Although some studies have assessed the risk of intraoperative renal ischemia by comparing juxtarenal abdominal aortic aneurysms (AAAs) and infrarenal AAAs, a critical limitation is the difference in these patients' clinical backgrounds and aneurysmal features. The present study evaluated the effect of suprarenal aortic clamping by comparing a juxtarenal AAA group with a subgroup of infrarenal AAAs (ie, short and/or large neck).Methods and Results:Among patients who underwent open surgery for AAA, the 2 types of AAA were selected and compared: juxtarenal AAA (JR group: n=35) and infrarenal AAA with short (<15 mm) and/or large (>28 mm) aneurysmal neck that only required infrarenal aortic clamping (SL group: n=26). Postoperative renal function was evaluated using the RIFLE classification. There were no significant differences between groups in baseline characteristics, comorbidities, and intraoperative variables. There were no adverse events leading directly to in-hospital mortality in either group. The rate of postoperative renal insufficiency (estimated glomerular filtration rate decrease ≥–25%) was not significantly different between groups.Conclusions:The outcomes of the 2 groups were similar, indicating that intraoperative renal ischemia with no specific intraoperative protection would not adversely affect postoperative outcomes. (Circ J 2014; 78: 2219–2224)
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Effect of Suprarenal Aortic Cross-Clamping:– Juxtarenal vs. Infrarenal Short and/or Large Neck Abdominal Aortic Aneurysm –

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