BACKGROUND: Coronary endarterectomy albeit infrequently utilized remains a pivotal treatment modality for advanced atherosclerotic heart disease. Benefits of coronary endarterectomy are explored in terms of better mid-term survival, freedom of major adverse cardiac and cerebrovascular events and improved left ventricular ejection fraction. METHODS: 50 patients with coronary artery disease including extensive diffuse LAD disease underwent a left anterior descending artery endarterectomy with coronary by-pass grafting and left internal mammary artery as conduit between 2006 and 2014. Prospective evaluation was performed on an outpatient basis with physical examination, echo recordings of ejection fraction and LAD flow reserve for 24 up to 60months. RESULTS: Study group was constituted by a male to female ratio 4:1 and mean age 62.4years old. Pre-operative characteristics included patients with age<60years old and gensini score>60 in 42.1% while patients with age>60years old had gensini score (21-60) in 63.4%. Furthermore, males were affected more severely by atherosclerosis than females. Postoperative anterior wall contractility of left ventricle was improved (56% pre-op vs. 66% post-op) and hypokinesis reduced (34% pre-op vs. 24% post-op). No deaths were recorded for a mean follow-up of 48months. Also, MACCE were recorded in 8% patients. Post-operative LAD flow reserve was normal in 66% and reduced in 33% of cases. Finally, gensini score preoperatively affects mid-term flow reserve postoperatively (p<0.05). CONCLUSION: Coronary endarterectomy presents a viable modality that preserves myocardial function and restores LAD flow in patients with diffuse atherosclerotic LAD. Also postoperative adverse effects were minimal while mid-term flow reserve was affected by preoperative factors.
BACKGROUND: Coronary endarterectomy albeit infrequently utilized remains a pivotal treatment modality for advanced atherosclerotic heart disease. Benefits of coronary endarterectomy are explored in terms of better mid-term survival, freedom of major adverse cardiac and cerebrovascular events and improved left ventricular ejection fraction. METHODS: 50 patients with coronary artery disease including extensive diffuse LAD disease underwent a left anterior descending artery endarterectomy with coronary by-pass grafting and left internal mammary artery as conduit between 2006 and 2014. Prospective evaluation was performed on an outpatient basis with physical examination, echo recordings of ejection fraction and LAD flow reserve for 24 up to 60months. RESULTS: Study group was constituted by a male to female ratio 4:1 and mean age 62.4years old. Pre-operative characteristics included patients with age<60years old and gensini score>60 in 42.1% while patients with age>60years old had gensini score (21-60) in 63.4%. Furthermore, males were affected more severely by atherosclerosis than females. Postoperative anterior wall contractility of left ventricle was improved (56% pre-op vs. 66% post-op) and hypokinesis reduced (34% pre-op vs. 24% post-op). No deaths were recorded for a mean follow-up of 48months. Also, MACCE were recorded in 8% patients. Post-operative LAD flow reserve was normal in 66% and reduced in 33% of cases. Finally, gensini score preoperatively affects mid-term flow reserve postoperatively (p<0.05). CONCLUSION: Coronary endarterectomy presents a viable modality that preserves myocardial function and restores LAD flow in patients with diffuse atherosclerotic LAD. Also postoperative adverse effects were minimal while mid-term flow reserve was affected by preoperative factors.
Authors: Mario Augusto Cray da Costa; André Luís Betero; Jefferson Okamoto; Marcelo Schafranski; Elise Souza Dos Reis; Ricardo Zanetti Gomes Journal: Braz J Cardiovasc Surg Date: 2020-02-01