Key result
Endovascular aneurysm repair (EVAR) was associated with a 0% mortality rate compared to 13.6% for open graft replacement in patients with ASA class 3 or 4 (P<.03).
Why the study?
Does EVAR compared to open graft replacement reduce in-hospital mortality in patients undergoing elective AAA exclusion with concomitant diseases?
Cohort (n=946)
No
Does EVAR compared to open graft replacement reduce in-hospital mortality in patients undergoing elective AAA exclusion with concomitant diseases?
Absolute Event Rate: 0% vs 13.6%
p-value: p=<.03
Staged treatment of AAAs using EVAR followed by surgical therapy for concomitant diseases is an effective strategy with lower in-hospital mortality compared to open graft replacement, particularly in high-risk patients.
HYPOTHESIS: To investigate whether staged or synchronous treatment of infrarenal abdominal aortic aneurysms (AAAs) and concomitant diseases (CDs) requiring surgical repair plays a clinical role. We considered endovascular aneurysm repair (EVAR) in particular. DESIGN: Review of a prospectively gathered database. SETTING: Tertiary care university teaching hospital. PATIENTS: We reviewed a total of 946 patients receiving elective AAA exclusion from 1980 through 2002. We divided the period into 2 observation intervals: 1980-1994, when only open graft replacement was available (n = 331), and 1995-2002, with 615 patients (326 who had open graft replacement and 289 who had EVAR). With regard to the physical status, expressed by the score from the American Society of Anesthesiologists (Park Ridge, Ill), we recorded in-hospital mortality rates and checked possible differences. MAIN OUTCOME MEASURES: Indications for therapy and mortality rates before and after the availability of EVAR. RESULTS: During the first interval, 14 simultaneous operations were carried out. During the second period, 19 patients received simultaneous operations while 49 underwent staged treatment using EVAR. The overall mortality rate was 3.7%. Irrespective of the American Society of Anesthesiologists classification, the mortality rate for patients who had EVAR was 0% in comparison with 13.6% for patients in American Society of Anesthesiologists class 3 or 4 after open graft replacement (P<.03). CONCLUSIONS: The coincidence of a patient having both an AAA and a CD is rare but should not be neglected. Staged treatment of AAAs using EVAR followed by surgical therapy for CDs can be an effective causal therapy with an acceptable mortality rate provided that suitable aneurysm anatomy exists.
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Alexander M. Prusa (2005) conducted a cohort in Abdominal aortic aneurysms and concomitant diseases (n=946). Endovascular aneurysm repair (EVAR) vs. Open graft replacement was evaluated on In-hospital mortality rate (p=<.03). Endovascular aneurysm repair (EVAR) was associated with a 0% mortality rate compared to 13.6% for open graft replacement in patients with ASA class 3 or 4 (P<.03).
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