Abstract
Objective To evaluate the curative effect of percutaneous coronary intervention (PCI) on patients with acute coronary syndrome (ACS), using intravenous nitroglycerin 99Tcm-MIBI SPECT gated myocardial perfusion imaging. Methods Forty cases of ACS including 17 cases of myocardial infarction (coronary occlusion) and 23 cases of unstable angina pectoris (coronary stenosis) were analyzed retrospectively. All patients were treated by PCI, and intravenous nitroglycerin 99Tcm-MIBI SPECT gated myocardial perfusion imaging were performed for all patients within a weeks before PCI and one to two months after PCI. The reversible and irreversible defect segment number, the effective rate of the treatment and ejection fraction (EF) were recorded to analyze. Results The treatment efficiency of PCI on coronary occlusion therapy in patients with reversible defect was 67.3%(37/55), that in patients with irreversible defects was 26.7% (8/30), the latter was obviously lower than the former (χ2=12.85, P<0.05). The total effective rate of PCI in coronary occlusion was 52.9% (45/85), that in coronary artery stenosis was 76.7% (69/90), the latter was higher than the former (χ2=10.84, P<0.05). Conclusions Nitroglycerin 99Tcm-MIBI SPECT gated myocardial perfusion imaging is an effective means to evaluate the efficacy of PCI in ACS patients. Schemic myocardium can gain normal perfusion by PCI treatment, and gain reperfusion for live myocardium with coronary infarction. But for the majority of irreversible myocardial infarction, the value of PCI treatment is limited. Key words: Acute coronary syndrome; Percutaneous coronary intervention; Myocardial perfusion imaging; Nitroglycerin
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.