Abstract
A ortocoronary bypass operation has a variable effect on the function of the left ventricle. 1 Bourassa MG L’Esperance J Campeau L et al. Fate of left ventricular contraction following aorto-coronary venous grafts. Early and late post-operative modifications. Circulation. 1972; 46: 724-730 Google Scholar , 2 Chatterjee K Swan HJC Parmley WW et al. Influence of direct myocardial revascularisation on left ventricular asynergy and function in patients with coronary heart disease.. Circulation. 1973; 47: 276-286 Crossref PubMed Scopus (216) Google Scholar , 3 Rees G Bristow JD Kremkau EL et al. Influence of aorto-coronary bypass surgery on left ventricular performance.. N Engl J Med. 1971; 284: 1116-1121 Crossref PubMed Scopus (141) Google Scholar This may be due, in part, to inability to predict the behavior of regional wall abnormalities following revascularization. Areas of asynergy may have pronounced influence on left ventricular function, 4 Herman MV Heinle RA Klein MD et al. Localized disorders in myocardial contraction: Asynergy and its role in congestive heart failure.. N Engl J Med. 1967; 277: 222-232 Crossref PubMed Scopus (404) Google Scholar , 5 Baxley WA Jones WD Doslye HT Left ventricular anatomical and functional abnormalities in chronic postinfarction heart failure.. Ann Intern Med. 1971; 74: 499-508 Crossref PubMed Scopus (27) Google Scholar and yet traditional hemodynamic techniques measure the integrated response of the left ventricle as though all segments made a uniform contribution to total function. Previous investigations show that abnormal wall motion occurs in zones supplied by those arteries with critical stenosis. 6 Sniderman AD Marpole D Fallen EL Regional contraction patterns in the normal and ischemic left ventricle in man.. Am J Cardiol. 1973; 31: 484-489 Abstract Full Text PDF PubMed Scopus (72) Google Scholar , 7 Gorlin R Klein MD Sullivan JM Prospective correlative study of ventricular aneurysm with special reference to mechanistic concept and clinical recognition.. Am J Med. 1967; 42: 512-531 Abstract Full Text PDF PubMed Scopus (198) Google Scholar
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