Preexisting High Expression of Matrix Metalloproteinase-2 in Tunica Media of Saphenous Vein Conduits Is Associated with Unfavorable Long-Term Outcomes after Coronary Artery Bypass Grafting

Table 2

Detailed location of the significant lesions in the follow-up coronary angiography.

Location	Patients [𝑛]
Grafts without native arteries	36 (34 SV grafts only, 2 SV grafts + LIMA)
SV grafts + nonbypassed coronary arteries	8
SV grafts + bypassed coronary arteries	3^a
Native coronary arteries without grafts	4^b

aNo complete occlusions in the bypassed native coronary arteries; ^bonly in the nonbypassed native coronary arteries.
Abbreviations: LIMA: left internal mammary artery, SV: saphenous vein.