Comparison of the Safety and Long Term Prognosis of Coronary Artery Bypass Transplantation by Different Methods of Free Mammary Artery
Objective To compare the safety and long-term prognosis of coronary artery bypass transplantation by different methods of mammary artery free transplantation.Methods A total of 117 patients who received coronary artery bypass grafting in First Affiliated Hospital of Henan University of Science and Technology from January 2016 to March 2020 were retrospectively selected,and the patients were divided into groups according to the mode of intramastric artery free:group A underwent pedicle method to free internal thoracic artery,group B underwent skeletal method to free internal thoracic artery.The intraoperative clinical indexes,perioperative indexes and postoperative complications of the two groups were recorded.Patients were followed up for three years,and the incidence of angina pectoris and adverse cardiovascular events were recorded in both groups during the follow-up period.Results There was no statistically difference in surgical time,number of distal anastomoses,left internal mammary artery flow,left internal mammary artery pulsatility index,right internal mammary artery flow,and right internal mammary artery pulsatility index between the two groups of patients(P>0.05).There was no statistically difference between the two groups of patients in terms of ventilator-assisted time,left ventricular ejection fraction,left ventricular end diastolic diameter,and postoperative incision pain(P>0.05).The postoperative pleural effusion in group B patients was less than that in group A,and the ICU stay time was shorter than that in group A(P<0.05).The overall incidence of postoperative complications in group B patients was lower than that in group A(P<0.05).At the end of the follow-up period,the incidence of high-grade angina in group B was lower than that in group A(P<0.05).There was no statistically significant difference in the incidence of adverse cardiovascular events between the two groups of patients(P>0.05).Conclusion The free internal thoracic artery performed better than the free internal thoracic artery with pedicle in postoperative complication rate,pleural effusion volume,ICU stay time and incidence of high-grade angina pectoris.