锝-99m sestamibi心肌灌注成像肺心比增高与多支血管冠状动脉疾病之间的临床关系

作     者：Kumar S. P. Brewington S. D. O' Brien K. F. Movahed A. 刘健 

作者机构：Section of Cardiology Department of Internal Medicine E. Carolina Univ. Brody Sch. of Med. Greenville NC 27858- 4354 United States 

出 版 物：《世界核心医学期刊文摘（心脏病学分册）》 (Digest of the World Core Medical Journals(Cardiology))

年 卷 期：2005年第1卷第10期

页      面：50-51页

学科分类：1002[医学-临床医学] 10[医学] 

主　　题：支血管 m sestamibi 临床关系 灌注成像 不良心脏事件 受试组 血管病 图像资料 

摘      要：An increased lung to heart ratio(LHR) on thallium-201(Tl- 201) stress myocardial perfusion imaging(MPI) is a predictor of adverse cardiac events and identifies people with extensive coronary artery disease(CAD). The implications of increased LHR in patients undergoing stress technetium- 99m(tc- 99m) sestamibi are developing. Our aim is to evaluate the relationship between increased LHR and extent of CAD in patients undergoing tc- 99m sestamibi MPI. Methods: We reviewed the records and images of 530 consecutive subjects who underwent exercise or adenosine tc- 99 m sestamibi MPI. One hundred thirty-two had transient or partially reversible myocardial perfusion defects and 79(exercise=34, adenosine=45, male=43, female=36, mean age=61 years) of these underwent coronary angiography(study population). The average LHR of these 79 subjects was compared to 79 patients(control population) with normal scans(exercise=50, adenosine=29, male=34, female=45, mean age=60 years). Results: The mean LHR(± SE) in subjects with normal scans was 0.30± 0.01. The mean LHR for those with abnormal scans and single vessel CAD who underwent exercise was 0.32± 0.01 and pharmacological stress was 0.31± 0.01. There was no statistically significant difference between the LHR of those with a normal scan and those with single vessel disease and an abnormal scan. However, there was a statistically significant association between the elevated LHR and multi-vessel CAD. The mean LHR for subjects with multi-vessel CAD with exercise was 0.39± 0.01(p=0.000) and for adenosine was 0.39± 0.02(p=0.000). Conclusion: An elevated LHR in patients undergoing exercise or pharmacological tc- 99m MPI correlates with multi-vessel CAD.