Using Intravascular Ultrasound Analyze Vasa Vasorum Between Acute Coronary Syndrome And Stable Angina Pectoris Patients

Objective: To evaluate the vasa vasorum(VV)characteristic between acute coronary syndrome(ACS)and stable angina pectoris(SAP)patients.Methods: Between January 2018 and December 2018,there were 70 patients underwent VH-IVUS examination in Xiang Tan central hospital.We analyzed demographic,VH-IVUS findings and VV in 30 acute coronary syndrome(ACS)patients and 40 stable angina pectoris patients.Results: The prevalence of VV at the minimum lumen area was similar between the 2 groups(96% vs.92%,P=0.852).On the other hand,it was significantly higher in ACS than SAP at both reference sites(proximal: 91% vs.77%,p = 0.018 and distal: 89% vs.63%,p < 0.001,respectively).The maximum number of VV was significantly higher in ACS than in SAP(at the minimum lumen area: 2.9±1.2 vs.1.7±1.1,p <0.001,at the proximal reference: 1.8±1.2 vs.1.2±1.0,p = 0.003 and distal reference: 1.6±1.1 vs.1.0± 0.9,p = 0.002,respectively).Conclusion: VV of coronary arteries was more enhanced in patients with ACS than in those with SAP,supporting its relation to plaque vulnerability.VV detected by used IVUS could be an adequate surrogate marker for plaque vulnerability.