Publication: Correlation of echocardiographic left atrial abnormality with myocardial ischemia during myocardial perfusion assessment in the presence of known left ventricular hypertrophy
Issued Date
2013-08-01
Resource Type
ISSN
18791913
00029149
00029149
Other identifier(s)
2-s2.0-84880339166
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Mahidol University
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SCOPUS
Bibliographic Citation
American Journal of Cardiology. Vol.112, No.3 (2013), 416-419
Suggested Citation
Amar Nawathe, Vignendra Ariyarajah, Sirin Apiyasawat, Ivan Barac, David H. Spodick Correlation of echocardiographic left atrial abnormality with myocardial ischemia during myocardial perfusion assessment in the presence of known left ventricular hypertrophy. American Journal of Cardiology. Vol.112, No.3 (2013), 416-419. doi:10.1016/j.amjcard.2013.03.047 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/32242
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Title
Correlation of echocardiographic left atrial abnormality with myocardial ischemia during myocardial perfusion assessment in the presence of known left ventricular hypertrophy
Abstract
Left atrial (LA) abnormality, an easily quantifiable parameter of left ventricular (LV) diastolic dysfunction, has been associated with cardiovascular risk similar to that of LV hypertrophy. The correlation between LV hypertrophy and LA abnormality among patients undergoing myocardial perfusion (MP) study has not been described. We prospectively studied 78 consecutive patients with LV hypertrophy who underwent MP study after screening for electrocardiographic and echocardiographic LA abnormality over a 6-month period. Of those, 48 had a positive MP imaging result, and 30 did not. LA size (p = 0.002) and P-wave duration (p = 0.017) were significantly increased in the former. The differential change in LA size (no defect = 35 ± 4, mild = 36 ± 5, moderate = 38 ± 5, severe = 44 ± 5 mm; p <0.0001) and P-wave duration (no defect = 107 ± 14, mild = 110 ± 17, moderate = 113 ± 15, severe = 127 ± 22 ms; p = 0.003) was greatest when the MP study defect exceeded moderate severity. In conclusion, the presence of LA abnormality could assist during MP study interpretation among patients with LV hypertrophy when such markers appear to be correlated with the severity of the MP study defect. © 2013 Elsevier Inc. All rights reserved.