Evaluation of characteristics of left-sided colorectal perfusion in elderly patients by angiography

Table 1 General characteristics and inferior mesenteric artery characteristics

	Number	Percent (%)
Sex
Male	94	61.0
Female	60	39.0
Age, yr	72.5 ± 5.5
BMI, kg/m2	23.49 ± 3.31
Comorbidity
CHD	34	22.1
ICVD	11	7.1
ASO	4	2.6
T2DM	14	9.1
IMA diameter (mm)	3.4 ± 0.5
IMA trunk length (cm)	3.7 ± 1.5
Type of LCA bifurcation
Type I	68	44.2
Type II	54	35.1
Type III	26	16.9
Type IV	6	3.9
Marginal artery
Integrity	80	51.9
Impaired integrity	74	48.1
aLCA and arc of Riolan
Existence	38	24.7
Inexistence	116	75.3
IMA or its branches lesion
Existence	25	16.2
Inexistence	129	83.8
IMA perfusion region
ASF	50	32.5
ATC	104	67.5

IMA: Inferior mesenteric artery; CHD: Coronary heart disease; ICVD: Ischemic cerebrovascular disease; ASO: Arteriosclerotic obliteration of lower limb; T2DM: Type 2 diabetes mellitus; aLCA: Ascending left colic artery; ASF: Inferior mesenteric artery perfuse only achieves splenic flexure or lower; ATC: Inferior mesenteric artery perfusion achieves to the transverse colon.