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Journal Article
Detection by intracoronary near-infrared spectroscopy of lipid core plaque at culprit sites in survivors of cardiac arrest.
Journal of Invasive Cardiology 2014 Februrary
With an estimated 300,000 cases occurring per year in the United States alone, sudden cardiac death remains a major public health problem and in many cases is the first manifestation of coronary artery disease. Autopsy studies have established that the causative event in many cases of sudden death is rupture of an intracoronary lipid core plaque with subsequent thrombus formation. Until recently, identification of lipid core plaque in vivo has not been possible; however, a combined near-infrared spectroscopy (NIRS) and intravascular ultrasound (IVUS) catheter has become available that can detect lipid core plaque in patients undergoing coronary angiography. In this report, we present findings in 5 patients who experienced a documented sudden cardiac arrest, were successfully resuscitated, and then were studied with intracoronary NIRS-IVUS to assess the extent and location of lipid core plaque. Although the detection of lipid core plaque at the culprit site in victims of sudden death is not novel, the novelty of the present report is that NIRS permitted identification of the large lipid core plaque underlying sudden cardiac arrest in vivo, a finding in striking accord with prior autopsy observations implicating ruptured lipid core plaque in the pathogenesis of sudden cardiac death.
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