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OBJECTIVE:
The aim of this study was to investigate the impact of diabetes mellitus on quality of life of patients after total arterial off-pump myocardial revascularization only with bilateral internal thoracic arteries for multi-vessel coronary disease.
METHODS: Between January 2008 and December 2010, 1400 patients were operated using only bilateral ITA-grafts and standard OPCAB-stabilizers. A total of 1264 patients answered questionnaires assessing quality of life after coronary surgery. 378 patients were diabetics (group D) and 886 patients were non-diabetics (group ND). Health-related quality of life was assessed postoperative with the use of the 36-Item Short-Form Health Survey (SF-36). We have evaluated 8 scores of health: physical functioning, role limitations due to physical problems (role-physical), bodily pain, vitality, general health perception, social function, role limitations due to emotional problems (role-emotional) and mental health. Higher scores indicate the better health status.
RESULTS:
No statistically significant differences were found for mortality, incidence of deep sternal wound infection and stroke between the two groups. The score for the physical functioning was significantly higher in the ND group (78.0±24.7 ND group vs. 74.1±25 D group, p=0.034). Similarly the score for the general health perception was significantly higher in the ND group (64±17.6 ND group vs. 61.9±18.9 D group, p=0.044). The scores for role-physical, bodily pain, vitality, social function, role-emotional and mental health were higher in ND group but statistically not significant. (see tab.1)
CONCLUSIONS:
The quality of life after off-pump total arterial myocardial revascularization was high and similar in both groups, only general health perception and physical functioning have shown better scores for the non-diabetic patients.

	Group D	Group ND	P-value
Physical functioning	74.1±25	78.1±24.7	0.034
Role-physical	63.5±38.8	68.2±38	0.112
Bodily pain	80.5±23.4	83.5±23.2	0.09
Vitality	57.2±19.4	59.9±18.3	0.65
General health perception	61.9±18.9	64.8±17.6	0.044
Social function	84.2±20.4	85.6±20.7	0.169
Role-emotional	73.8±39.3	78.0±26.3	0.425
Mental health	73.5±16.1	74.5±16.8	0.379