Lessons learned from the use of 1,977 in-situ bilateral internal mammary arteries: a retrospective study

Table 2 Baseline characteristics of BIMA patients stratified by gender, body mass index, and diabetes

Variable (% unless otherwise indicated)	Male	Female		BMI > 30	BMI ≤ 30		Diabetes no insulin	No Diabetes
Variable (% unless otherwise indicated)	n = 1,761	n = 216	pvalue	n = 402	n = 1,575	pvalue	n = 193	n = 1,734	pvalue
Age (mean year ± SD)	55.0 ± 8.1	59.2 ± 11.5	<0.0001	54.3 ± 9.3	55.8 ± 8.4	0.002	57.4 ± 8.7	55.2 ± 8.5	0.0006
Female	---	---	---	11.2	10.9	0.86	9.3	10.8	0.62
BMI (mean kg/m² ± SD)	27.3 ± 3.7	26.8 ± 4.1	0.09	32.6 ± 2.3	25.9 ± 2.6	<0.0001	28.7 ± 4.1	27.1 ± 3.6	<0.0001
Diabetes	12.2	13.4	0.59	18.7	10.7	<0.0001	---	---	---
Insulin-dependent	18.5	16.2	0.43	20.6	21.0	1.0	---	---	---
Renal failure	3.5	2.8	0.84	3.0	3.5	0.76	3.6	3.2	0.67
Previous MI	51.5	45.9	0.06	48.3	51.1	0.34	49.5	51.0	0.08
Hypertension	59.7	69.0	0.01	57.7	47.2	<0.001	65.8	68.9	0.15
Active smoking	32.4	30.7	0.64	29.3	32.4	0.12	28.3	32.5	0.06
COPD	6.4	4.6	0.37	6.0	6.3	0.9	7.3	6.1	0.53
Peripheral vascular disease	8.1	10.2	0.09	6.5	9.6	0.05	11.4	8.0	0.13
Previous stroke	2.9	5.1	0.09	3.2	3.1	0.87	2.6	3.2	0.83
LVEF ≤ 35%	3.8	4.8	0.45	3.6	4.0	0.88	4.2	3.6	0.68
CHF NYHA class III or IV	16.8	18.0	0.09	19.9	17.6	0.31	20.5	17.6	0.32
Atrial fibrillation	1.5	1.4	1.00	2.0	1.4	3.37	2.1	1.4	0.56
Three-vessel disease	59.2	54.6	0.21	59.2	58.6	0.86	62.7	58.2	0.25

BIMA bilateral internal mammary artery, CPB Cardiopulmonary bypass, CHF congestive heart failure, COPD chronic obstructive pulmonary disease, IMA internal mammary artery, LVEF left ventricular ejection fraction, MI myocardial infarction, NYHA New York Heart Association, SD standard deviation.

ISSN: 1749-8090