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Does coronary artery size really matter?

Turgay Celik1, Atila Iyisoy, Hurkan Kursaklioglu

  • 1Department of Cardiology, Gulhane Military Medical Academy, School of Medicine, Etlik, Ankara, Turkey. benturgay@yahoo.com

Echocardiography (Mount Kisco, N.Y.)
|June 22, 2005
PubMed

Insights

Patients with a small right coronary artery (RCA) caliber may experience right ventricle (RV) ischemia. This study found reduced RV systolic velocity in patients with a small RCA, indicating potential ischemia.

Area of Science:

  • Cardiology
  • Echocardiography
  • Coronary Artery Disease

Background:

  • Right ventricular (RV) ischemia assessment is crucial in cardiovascular diagnostics.
  • The impact of right coronary artery (RCA) caliber on RV function requires further investigation.

Purpose of the Study:

  • To evaluate the presence of RV ischemia in patients with a small caliber of the right coronary artery (RCA).

Main Methods:

  • Sixty patients undergoing coronary angiography were divided into three groups based on RCA diameter and coronary dominance.
  • RV ischemia was assessed using pulse-wave tissue Doppler sampling during dobutamine stress echocardiography (DSE).

Main Results:

  • Patients with a small RCA (Group 1) showed a statistically significant lower mean systolic velocity increase from low to peak dobutamine compared to other groups (P=0.007).
  • The mean systolic velocity at peak dobutamine dose was significantly lower in the small RCA group (P=0.001).

Conclusions:

  • A small caliber of the right coronary artery (RCA) is associated with probable right ventricle (RV) ischemia.
  • RCA caliber is a significant factor to consider in patients presenting with potential RV dysfunction.
Abstract

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