Early efficacy of CABG care delivery in a low procedure-volume community hospital: operative and midterm results

BMC Surgery

Table 1 Patient Demographics, Risk Factors and Operative Data

Variable	Study Site n mean ± SD	2001–2003 % median (25%–75%)	STS (2001–03) % median (25%–75%)	P-Value
No. of Patients	504		448841
Demographics/Risk Factors
Age (yrs)	64 ± 11	65 (56–72)	66 (57–74)
Male	368	73.0	71.3	.433
Caucasian	474	94.0	87.1	<.001
Black	5	1	5.17	<.001
Hispanic/Other	25	4.96	6.84
BSA (m2)	2.08 ± 0.25	2.08 (1.89–2.26)	1.95 (1.82 – 2.13)	<.001
Obese (BMI>35 kg/m2)	103	20.4	13.4	<.001
Current Smoker	101	20	22.1	.295
Family History of CAD	403	80	43.2	<.001
Diabetes	168	33.30	35.0	.469
Insulin-dependent	41	8.13	10.47	.102
Hypercholesterolemia	323	64	68.49	.038
Renal Failure	10	1.98	5.20	.002
Hypertension	358	71	74.78	.060
Peripheral Vascular Disease	35	6.94	15.80	<.001
Cerebrovascular Disease	60	11.90	13.21	.425
COPD	68	13.50	18.61	.004
Myocardial Infarction	266	52.80	45.53	<.001
Congestive Heart Failure	44	8.73	13.80	<.001
Unstable	222	44.10	47.05	.193
Arrhythmia (any)	42	8.30	9.43	.443
Triple Vessel Disease	422	83.70	74.63	<.001
Left Main Disease >50%	118	23.40	24.54	.594
Ejection Fraction (%)	48 ± 11	50 (40–55)	50 (40–60)
Previous CV intervention	116	23.00	20.36	.155
Operative Data
Elective	129	25.60	51.88	<.001
Emergent	63	12.50	4.10	<.001
Redo Surgery	15	2.98	8.93	<.001
No. of Grafts	3.58 ± 1.01
Arterial	1.63 ± 0.98
Vein	1.94 ± 0.98
ITA Used	473	93.80	89.84	.004
Left ITA used	471	93.50	89.34	.004
Aortic Cross-Clamp (min)	58 ± 22	55 (45–68)	63 (47 – 83)	.004
Perfusion time (min)	90 ± 31	85 (70–106)	94 (73 – 119)
Off-pump	21	4.17	20.48	<.001
STS Predicted Mortality (%)	2.94 ± 5.0		3.13

Ejection fraction was available in 464 patients. CV intervention = any cardiovascular intervention (surgery, angioplasty, or stenting). The urgent cases (197/504) are not compared in the STS database.

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