Stable myocardial performance at clamped aorta based solely on the internal mammary artery graft flow: a functional test.
Authors report their experiences with arterial revascularization of the heart using the internal mammary artery (IMA). A method of intraoperative measurement of the free cut end and the effective graft flow of the IMA after meticulous anatomical dissection is described. Free cut end IMA flow was measured both at systemic and extracorporeal pump perfusion pressure and was found as 145+/-26 ml/min and 135+/-16 ml, respectively. A method of measurement of the effective IMA graft flow was introduced and described. An attempt was made to identify factors leading to stable myocardial performance based only on the IMA graft flow just prior to declamping the aorta. The phenomenon is considered as a reliable functional test regarding precise IMA harvesting, anastomosis construction and IMA graft flow capacity.
Tarr
F
F
Haynal Imre Medical University, Department of Cardiovascular Surgery, Budapest, Hungary.
Somogyi
A
A
D000328:Adult; D001011:Aorta / Q000502:physiology; D005112:Extracorporeal Circulation; D005260:Female; D006321:Heart / Q000502:physiology*; D006324:Heart Arrest, Induced; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008323:Mammary Arteries / Q000502:physiology; D008875:Middle Aged; D009204:Myocardial Revascularization / Q000379:methods*