Özet:
Patients with coronary artery disease,
with (n = 25) and without (n = 59) type 2
diabetes, who were scheduled to undergo
coronary artery bypass grafting were
enrolled in this prospective study. The left
internal thoracic artery (LITA) was
assessed for graft suitability before surgery
by trans-thoracic Doppler ultrasonography
and during surgery by
manual measurement. Significant
differences were seen between preoperative
and intra-operative LITA blood
flow rates and LITA diameters, and the
values of each at the two time points
showed significant correlation, suggesting
that pre-operative measurements largely
related to intra-operative conditions. The
pre-operative and intra-operative LITA
blood flow rates and LITA diameters were
not significantly different between
patients with and without type 2 diabetes.
Pre-operative LITA blood flow was
monophasic in three patients without
diabetes and the LITA grafts of these
patients were deemed unsuitable for
implantation during surgery. It is
concluded that type 2 diabetes does not
seem to have a negative effect on the
suitability of LITA grafts. In addition,
trans-thoracic Doppler ultrasonography is
an easy, cost-effective, reproducible and
non-invasive examination method, which
may help in the evaluation of LIMA
function and contribute to graft selection.