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Coronary Artery Bypass Grafting on Right Ventricular Function

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by

Vishnu
in

Introduction: Coronary artery bypass grafting (CABG) is a widely used surgical procedure to improve blood flow in patients with coronary artery disease. While CABG effectively restores myocardial perfusion, its impact on right ventricular (RV) function has been a subject of ongoing research. A recent study utilizing speckle tracking echocardiography (STE) offers valuable insights into how CABG affects RV function post-surgery. Visit https://www.cardiologymedjournal.com/jccm for more groundbreaking research in this field.

Study Overview:

  • Conducted at Benha University Hospital and the National Heart Institute.
  • Involved 100 patients who underwent CABG.
  • Utilized conventional echocardiography and STE to assess RV function before and within two weeks post-surgery.

Key Findings:

  • Decrease in Longitudinal Strain: RV global longitudinal strain (RVGLS) showed a significant reduction from -20.63% to -14.1%.
  • Reduction in Tricuspid Annular Plane Systolic Excursion (TAPSE): TAPSE values decreased from 22.8 mm to 13.77 mm, indicating potential post-operative RV dysfunction.
  • Changes in RV Systolic Velocity (RVS’): A decrease from 12.76 mm/s to 7.33 mm/s was observed.
  • Increase in Right Ventricular Fractional Area Change (RVFAC): RVFAC increased from 44.69% to 49.01%, suggesting some compensatory mechanisms in play.
  • No Significant Change in Right Ventricular Stroke Volume (RVSV) and Right Myocardial Performance Index (RMPI).

Clinical Implications:

  • The reduction in RV longitudinal strain post-CABG suggests that RV function may be underestimated if assessed solely through longitudinal parameters.
  • A compensatory increase in circumferential strain of the lateral free wall was observed, indicating adaptive mechanisms post-surgery.
  • Changes in RV deformation parameters should be interpreted in conjunction with geometric changes to provide a comprehensive assessment of RV function.

External Medical Insights: The American Heart Association (AHA) emphasizes that comprehensive echocardiographic evaluations, including STE, are crucial for monitoring post-CABG cardiac function. Such assessments aid in identifying potential dysfunctions early, thereby improving patient management strategies.

Further Reading

Call-to-Action (CTA) for Engagement: Stay updated on the latest advancements in cardiovascular medicine! Explore more studies at https://www.cardiologymedjournal.com/jccm and share your thoughts in the comments below.

Disclaimer: This content is generated using AI assistance and should be reviewed for accuracy and compliance before considering this article and its contents as a reference. Any mishaps or grievances raised due to the reusing of this material will not be handled by the author of this article

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