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Related Experiment Videos

Ventricular function and the native coronary circulation five years after myocardial revascularization.

D H Tyras, N Ahmad, G C Kaiser

    The Annals of Thoracic Surgery
    |June 1, 1979
    PubMed
    Summary

    Coronary artery bypass grafting outcomes were studied long-term. Many patients maintained or improved left ventricular function, but accelerated atherosclerosis in ungrafted arteries may impact outcomes.

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    Midterm results of complete arterial revascularization in more than 1,000 patients using an internal thoracic artery/radial artery T graft.

    Annals of surgery·2001

    Area of Science:

    • Cardiovascular Surgery
    • Interventional Cardiology
    • Clinical Outcomes Research

    Background:

    • Coronary artery bypass grafting (CABG) is a major intervention for coronary artery disease.
    • Long-term functional outcomes and graft patency after CABG require continued investigation.
    • Understanding factors influencing postoperative left ventricular (LV) function is crucial for patient management.

    Purpose of the Study:

    • To evaluate long-term postoperative left ventricular (LV) function and graft patency in patients who underwent coronary artery bypass grafting (CABG).
    • To identify patterns of LV function post-CABG and their correlation with graft status and disease progression.
    • To explore potential factors contributing to LV function deterioration after CABG.

    Main Methods:

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  • Retrospective analysis of 181 patients restudied at least 5 years post-CABG.
  • Utilized ventriculography and graft/coronary angiography to assess cardiac function and vessel status.
  • Categorized patients into five patterns of postoperative ventricular function.

    • Main Results:

    • Nearly half of patients (49%) achieved or maintained normal left ventricular (LV) function post-CABG.
    • Graft patency and angina relief were significantly better in patients with normal LV function compared to those with LV deterioration.
    • Accelerated atherosclerosis in ungrafted coronary arteries was observed more frequently in patients with LV deterioration (61.3%).

    Conclusions:

    • A significant proportion of patients experience favorable long-term LV function after CABG.
    • LV function post-CABG is linked to graft patency and symptom relief.
    • Intrinsic acceleration of coronary atherosclerosis, independent of surgical intervention, may contribute to poor outcomes in some patients.