Adenosine-stress myocardial perfusion imaging for post-operation follow-up after percuteneous coronary intervention in the elderly patients / 中华老年医学杂志

ABSTRACT

ObjectiveTo evaluate the value of adenosine-stress myocardial perfusion imaging (MPI)in post-operation follow-up after the percutaneous coronary intervention(PCI) in the elderly.MethodsThere were patients (53 cases) underwent adenosine-stress MPI prior to and 6 months after PCI. Major adverse cardiovascular events (MACE) were followed. Left ventricular ejection fraction (LVEF) was analyzed in 40 cases. The image of the left ventricular myocardium was divided into 16 segments to calculate total defect score using a 4-grade assessment.Myocardial scintigrams were evaluated by calculating the summed adenosine-stress score and coronary angiography assessed by calculating the summed score of coronary artery stenosis.Results There was a significant correlation between the scores of coronary artery stenosis and adenosine-stress MPI scores (r=0.675,P＜0.01). Adenosine-stress MPI scores were obviously lower after PCI than before(2.2± 2.3 vs. 4.5±1.9,t= 7.348, P＜0.01); LVEF was significantly greater after PCI than pre-operation[(58.3±10.5 ) ％ vs. (53.8 ± 10.3) ％, t = 3.497, P＜0.01] and the effective rate for myocardial perfusion were 86.84 ％. Conclusions Adenosine stress MPI is a good noninvasive diagnostic method with high accuracy and plays an important role for evaluating recovery of myocardial perfusion and left ventricle function in the elderly patients after PCI.