Minimally invasive saphenous vein harvesting: effects on endothelial and smooth muscle function

Black, E. A., Guzik, T. J., West, N. E.J., Campbell, K., Pillai, R., Ratnatunga, C. and Channon, K. M. (2001) Minimally invasive saphenous vein harvesting: effects on endothelial and smooth muscle function. Annals of Thoracic Surgery, 71(5), pp. 1503-1507. (doi: 10.1016/S0003-4975(01)02463-8) (PMID:11383790)

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Abstract

Background. The long saphenous vein remains the commonest conduit used in coronary artery bypass grafting procedures. Surgical trauma during vein harvesting can cause endothelial and smooth muscle injury that has important implications for vein graft longevity. Minimally invasive vein harvesting is advocated to reduce wound morbidity. However, the functional consequences of increased handling and traction, with potentially detrimental effects, remain unknown. Methods. Forty patients were prospectively randomized into either a minimally invasive (minimal) or traditional (open) saphenous vein harvest group. Smooth muscle contractile function was assessed by responses to potassium chloride and phenylephrine. Endothelial cell function was assessed by responses to serial escalations in concentration of acetylcholine, bradykinin, calcium ionophore, sodium nitroprusside, and n-nitro-l-arginine using isometric tension studies. Results. Harvest times were similar for both groups. The total incision length in the minimal group was significantly shorter than in the open group. There were no differences in smooth muscle contractions to either receptor-independent or receptor-mediated agonists between the two groups. Similarly, vasorelaxation in response to both endothelium-dependent and endothelium-independent agonists were similar in both groups. Conclusions. Minimally invasive saphenous vein harvesting is associated with similar medial smooth muscle and endothelial function as open harvesting. These findings suggest that minimally invasive harvesting techniques can be used without major detrimental effects on vascular integrity.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Guzik, Professor Tomasz
Authors: Black, E. A., Guzik, T. J., West, N. E.J., Campbell, K., Pillai, R., Ratnatunga, C., and Channon, K. M.
College/School:College of Medical Veterinary and Life Sciences > Institute of Cardiovascular and Medical Sciences
Journal Name:Annals of Thoracic Surgery
Publisher:Elsevier
ISSN:0003-4975
ISSN (Online):1552-6259
Published Online:04 May 2001

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