The long-term survival rates of patients after repair of abdominal aortic aneurysms |
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Authors: | Hisanaga Moro Masaaki Sugawara Mayumi Shinonaga Jun-Ichi Hayashi Shoji Eguchi Masanori Terashima Shigetaka Kasuya Yoshihiko Yamazaki Yoshitomo Satoh Yukio Maruyama |
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Institution: | (1) Second Department of Surgery, Niigata University School of Medicine, 1-757 Asahimachi-dori, 951 Niigata City, Niigata, Japan;(2) Department of Thoracic Surgery and Pulmonary Medicine of Niigata Cancer Center Hospital, 2 Kawagishi-cho, 951 Niigata City, Japan;(3) Department of Cardiovascular Surgery, Tachikawa Medical Center, 3-2-11 Kanda-cho, 940 Nagaoka City, Niigata, Japan;(4) Department of Cardiovascular Surgery, Nagaoka Red Cross Hospital, 2-6-1 Nisseki-cho, 940 Nagaoka City, Niigata, Japan;(5) Department of Cardiovascular Surgery, Niigata City General Hospital, 2-6-1 Shichikuyama, 950 Niigata City, Japan;(6) Department of Cardiovascular Surgery, Niigata Kobari Hospital, 2 Kobari-cho, 950-21 Niigata City, Japan |
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Abstract: | This study was undertaken to examine the longterm survival rates of patients following abdominal aortic aneurysm (AAA) repair
in comparison with an age-matched normal population, and to determine by multivariate analysis the factors influencing long-term
survival. Of 125 patients who underwent AAA repair prior to July 1986, 13 died during hospitalization. Of these 13 patients,
6 who suffered aneurysmal rupture all died within 30 days. The survival rate of patients with ruptured aortic aneurysms was
significantly lower than that of those with nonruptured aneurysms. Of the 112 patients surviving hospitalization, 85 died
within 0.48 to 24 years after their operation. The long-term survival rate of patients who had suffered a preoperative cardiovascular
event was significantly lower than that of those who had not suffered a preoperative cardiovascular event. The actual survival
rate was significantly lower than the expected survival rate. According to a multivariate analysis, the significant predictors
of late survival were age, aneurysmal rupture, and chronic renal failure in all the patients, and age, chronic renal failure,
and pre- and postoperative cardiovascular events in patients who did not die in hospital. These findings indicate the importance
of improving immediate perioperative management of ruptured AAA and that cardiovascular events should be prevented, or treated
during long-term follow-up. |
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Keywords: | long-term survival rate abdominal aortic aneurysm life-table expected survival rate multivariate analysis |
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