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The impact of abdominal aortic aneurysm diameter on the outcome of endovascular aortic repair

Introduction. Abdominal aortic aneurysm diameter is one of the most important
 parameters in the diagnostic and therapeutic algorithm for aneurysm
 follow-up. Currently, two therapeutic modalities are used: open surgery and
 endovascular aortic repair. The aim of this study is to analyze the impact
 of the maximum transverse diameter of the abdominal aortic aneurysm on the
 incidence of general and specific complications. Material and Methods. The
 retrospective study included 75 patients with infrarenal abdominal aortic
 aneurysm who underwent endovascular aortic repair in the period from July
 2008 to January 2020. The patients were divided into two groups: group A
 with an abdominal aortic aneurysm size ? 5.9 cm, and group B with an
 abdominal aortic aneurysm size ? 6.0 cm. Results. A total of 41.3% of
 patients presented with a maximum transverse aneurysm diameter of ? 5.9 cm,
 and 58.7% of patients had ? 6.0 cm. Of comorbid diseases, chronic
 obstructive pulmonary disease was more prevalent in patients with a large
 abdominal aortic aneurysm (group A 25.8%; group B 59.1%). None of the other
 comorbidities showed a statistically significant difference between the two
 groups of patients. Early complications were present in a total of 14.7% of
 patients, of which 12.9% of patients with a small and 15.9% with a large
 abdominal aortic aneurysm. Late complications occurred in a total of 18.7%
 of patients, in 9.7% of patients with a small and 25% of patients with a
 large abdominal aortic aneurysm. Conclusion. Patients with abdominal aortic
 aneurysms with a maximum transverse diameter of 6 cm and larger, present
 with a higher rate of late postoperative complications, increase in
 aneurysmal sac on control multislice computed tomography angiography, and
 have a worse prognosis compared to patients with smaller abdominal aortic
 aneurysms.