Clinical value of intravascular ultrasound imaging on guidance of interventional treatment for intermediate coronary lesions

Objective:To analyze application value of intravascular ultrasound imaging(IVUS)on guidance of interventional treatment for intermediate coronary lesions.Methods:A total of 130patients were proved to be intermediate lesions by coronary angiography(CAG)from our hospital were prospectively studied,and they were randomly divided into CAG group(n=95,received CAG examination)and IVUS group(n=35,received IVUS after CAG).Quantifying coronary angiography(QCA)and IVUS quantitative analyses were used to measure difference in minimal lumen diameter,reference vessel diameter,stenotic rates of diameter and area between two groups,and incidence rate of major adverse cardiovascular events(MACE)during admission and follow-up were compared between two groups.Results:Compared with CAG group,there were significant increase in coronary intimal caleification[8.4%(8/95)vs.28.6%(10/35)],stenotic rates of diameter[(43.97±6.53)%vs.(55.25±7.41)%]and area[(56.48±10.38)%vs.(69.87±9.97)%]in IVUS group(P0.05both),but there were no significant difference in minimal lumen diameter and reference vessel diameter between two groups(P0.05).There was no significant difference in incidence rate of MACE during admission between two groups(P0.05),but that of IVUS group(2.86%)was significantly lower than that of CAG group(6.32%)since one month after follow-up started(P0.05).Conclusion:Intravascular ultrasound imaging can significantly increase detection rate of intermediate coronary lesion,better guide percutaneous coronary intervention,prevent complications and improve prognosis.