Myocardial thievery: the coronary-subclavian steal syndrome

Thomas J Takach1, George J Reul, Denton A Cooley

  • 1Department of Cardiovascular Surgery, The Texas Heart Institute, St. Luke's Episcopal Hospital, Houston, Texas, USA.

Insights

Coronary-subclavian steal syndrome, a reversal of blood flow in coronary bypass grafts, is more common than previously thought. Atherosclerosis in the subclavian artery is the main cause, leading to myocardial ischemia.

Area of Science:

  • Cardiovascular Surgery
  • Vascular Surgery
  • Interventional Cardiology

Background:

  • Coronary-subclavian steal syndrome (CSSS) involves reversed blood flow in internal mammary artery (IMA) grafts, causing myocardial ischemia.
  • Atherosclerotic disease of the subclavian artery is the primary etiology of CSSS.
  • CSSS, once considered rare, is increasingly recognized, suggesting underreporting and underestimated clinical impact.

Purpose of the Study:

  • To review the causes and background of coronary-subclavian steal syndrome.
  • To discuss methods for preventing, diagnosing, and treating CSSS.
  • To evaluate the influence of treatment on long-term survival and adverse events in CSSS patients.

Main Methods:

  • Literature review of coronary-subclavian steal syndrome.
  • Analysis of diagnostic modalities for CSSS.
  • Review of therapeutic strategies and their outcomes.

Main Results:

  • CSSS is linked to IMA graft dysfunction and subclavian artery atherosclerosis.
  • Diagnosis involves non-invasive and invasive vascular imaging.
  • Treatment options range from medical management to surgical revascularization.

Conclusions:

  • CSSS poses significant risks, including myocardial ischemia and graft failure.
  • Early diagnosis and appropriate intervention are crucial for managing CSSS.
  • Further research is needed to optimize long-term management and patient outcomes.

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