Changes in vein grafts following aorto-coronary bypass induced by pressure and ischemia.

Animals Arm/blood supply Cell Division Coronary Artery Bypass/adverse effects Coronary Vessels/surgery Dogs Femoral Artery/surgery Femoral Vein/pathology,transplantation Follow-Up Studies Hypertension/pathology Hypoxia/pathology Ischemia/complications Metaplasia/pathology Muscle, Smooth/pathology Necrosis/pathology Time Factors Transplantation, Autologous