1.

患者的一般资料（n=111）

Patient demographics (n=111)

Variable		Data
Age [yr, Mean±SD (range)]		67.4±7.7 (47-82)
Gender	Male Female	89 (80.2%) 22 (19.8%)
Comorbidities	Diabetes mellitus Hypertension Peripheral vascular disease Atrial Fibrillation History of cerebrovascular diseases	42 (37.8%) 60 (54.1%) 7 (6.3%) 7 (6.3%) 9 (8.1%)
History of myocardial infarction		36 (32.4%)
Ejection fraction < 50 %		5 (4.5%)
Time from last stent implantation to operation	1-3 months 3-12 months 12-36 months > 36 months	7（6.3%) 15 (13.5%) 30 (27.0%) 59 (53.2%)
Number of stents	1 2 3 > 3 Unknown	51 (45.9%) 18 (16.2%) 15 (13.2%) 12 (10.8%) 15 (13.5%)