[Clinico-epidemiological features of infrarenal abdominal aortic aneurysm and relevant prognostic factors].
OBJECTIVE
To investigate the clinico-epidemiology features of infrarenal abdominal aortic aneurysm (AAA) and relevant prognostic factors.


METHODS
The clinical records of 375 infrarenal AAA patients, 282 males and 93 females, aged (62 +/- 15), hospitalized 1988 -2007 were analyzed.


RESULTS
In recent ten years, the number of patients admitted because of AAA was 186.6% as high as that in the last 10 years. The rupture rate of the male AAA patients was 14.4%, significantly higher than that of the female AAA patients (6.5%, P < 0.05). The rupture rate of the AAA aged patients > or = 65 was 3.6%, significantly lower than that of the AAA patients < 65 (17.7%, P < 0.01). The aneurysm diameter of the patients with hyperextension was (6.1 +/- 3.3) cm, significantly lower than that of the patients without hypertension [(6.8 +/- 2.3) cm. P < 0.05]. The general 5-year survival rate was 70.1%. The 5-year survival rates of the female patients, patients > or = 65, without hypertension, and without coronary heart disease were, all significantly higher than those of the male patients, patients < 65, and patients with hypertension or coronary heart disease (all P < 0.05). Cox regression analysis showed that sex, smoking, and hypertension were all prognostic factors (all P < 0.05).


CONCLUSIONS
The morbidity of AAA increases fiercely. The AAA patients being male, smoking, or with hypertension have poorer prognosis, and age and operation method are not related to prognoses.
Song
Jin-Qiu
JQ
Department of Vascular Surgery, First Affiliated Hospital of China Medical University, Shenyang 110001, China.
Zhang
Jian
J
Yin
Ming-Di
MD
Wu
Bin
B
Shan
Shao-Yin
SY
Duan
Zhi-Quan
ZQ
Xin
Shi-Jie
SJ
D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000175:diagnosis* / Q000453:epidemiology*; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012044:Regression Analysis; D012189:Retrospective Studies; D012307:Risk Factors; D016019:Survival Analysis