Predictors of adverse events after endovascular abdominal aortic aneurysm repair: A meta-analysis of case reports

Table 1 Characteristics of the study population

	N or mean ± standard deviation	Percentage or range
Gender
Male	138	80%
Female	24	14%
Unspecified	11	6%
Age at operation (years)	72.47 ± 7.62	(52 to 93)
50 to 59 years	7	4%
60 to 69 years	41	24%
70 to 79 years	83	48%
80 to 89 years	26	15%
90 to 99 years	1	1%
Unspecified	15	9%
Comorbidities
Diabetes	5	3%
Smoking	5	3%
Hypertension	21	12%
Hypercholesterolaemia	6	3%
Cardiac status	25	14%
Obesity	7	4%
Stroke	5	3%
Pulmonary status	21	12%
Renal status	10	6%
Other*	23	13%
Peripheral vascular disease	7	4%
Carotid disease	1	1%
Number of comorbidities
0 or unspecified	114	66%
1 or 2	26	15%
≥3	33	19%
AAA diameter	59.78 ± 11.04	42 to 95
Incomplete follow-up adherence ^†	8	5%
Time interval between EVAR and complication (months)	13.73 ± 16.11	0 to 85
Perioperative, up to 24 hours	31	18%
Initial, up to 30 days post-operative	28	16%
Short term, 30 days to 6 months	15	9%
Early mid-term, 6 months to 2 1/2 years	62	36%
Late mid-term, 2 1/2 years to 5 years	23	13%
Long term, > 5 years	4	2%
Unspecified	10	6%

*Other comorbidities that were described in the case reports included: active hepatitis C, alcohol abuse, arteriocaval fistula, bilateral gunshot injury, chemoradiation, cholangitis, Crohn's disease, factor VII deficiency, degenerative joint disease of lumbar spine, hemicolectomy, 'hostile' abdomen, hyperthyreoidectomy, hypoplastic marrow, liver cirrhosis, lymphoma, multiple gastrointestinal and urogenital operations, non-Hodgkin's lymphoma, pancreatoduodenectomy, pancytopenia, polycystic kidney disease, prostate cancer, rectal cancer, sigmoid resection and renal transplantation. †'Incomplete follow-up adherence' is defined by the patient missing one or more follow-up visits or refusing a re-intervention. AAA, abdominal aortic aneurysm; EVAR, endovascular abdominal aortic aneurysm repair; SD, standard deviation.

ISSN: 1752-1947