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Renal impairment and coronary collaterals in patients with acute coronary syndrome

M Duran1, O K Uysal, O Gunebakmaz

  • 1Department of Cardiology, Ankara Research and Education Hospital, Ankara, Turkey, mduran2@gmail.com.

Herz
|May 8, 2013
PubMed

Insights

Mild-to-moderate renal impairment is associated with the development of coronary collateral vessels (CCV) in acute coronary syndrome (ACS) patients. This link may be due to increased myocardial ischemia and severe coronary artery disease (CAD).

Area of Science:

  • Cardiology
  • Nephrology
  • Vascular Biology

Background:

  • Coronary collateral vessels (CCV) play a crucial role in mitigating myocardial ischemia during acute coronary syndrome (ACS).
  • The impact of renal impairment on CCV development in ACS patients remains incompletely understood.
  • Understanding this relationship can inform risk stratification and treatment strategies.

Purpose of the Study:

  • To investigate the association between mild-to-moderate renal impairment and the presence of CCV in patients with ACS.
  • To explore potential contributing factors such as myocardial ischemia and coronary artery disease severity.

Main Methods:

  • A cohort of 461 patients with ACS undergoing first-time coronary angiography were analyzed.
  • Coronary collateral vessel development was assessed using the Rentrop score.
  • Kidney function was evaluated by estimated glomerular filtration rate (eGFR), and atherosclerosis severity by the Gensini score.

Main Results:

  • The presence of CCV was significantly associated with lower eGFR (p=0.001), higher serum creatinine (p=0.034), higher serum albumin (p=0.036), and higher Gensini scores (p<0.001).
  • Multivariate analysis identified the Gensini score as an independent predictor of CCV presence (OR=1.090, p=0.002).
  • Patients with CCV had a mean eGFR of 82.7 ± 20.5 U/l compared to 89.9 ± 24.3 U/l in those without CCV.

Conclusions:

  • Mild-to-moderate renal impairment is linked to the presence of CCV in ACS patients.
  • This association may be mediated by increased myocardial ischemia and more severe coronary artery disease.
  • Further research is warranted to confirm these findings and explore clinical implications.
Abstract

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