Abstract P009: Relationship Between Increased Systolic and Diastolic Pressure and Left Atrial Train Rate
Background: Left atrial (LA) strain rate analysis by two-dimensional speckle tracking can represent a new tool to evaluate LA function. Office blood pressure is the most powerful non-invasive index of arterial stiffness which can determine LA function.
We hypothesized that increased systolic and diastolic pressure were associated with increased left atrial strain.
Methods: We consecutively examined 2D speckle-tracking in an asymptomatic cohort, with cardiac geometry, LA volume, LA ejection fraction, LA strain rate analyzed. The LA speckle tracking echocardiography curves were obtained using R-wave onset of the electrocardiogram as a reference point. The LA strain rate (SRs, SRe and SRa) were analyzed by commercialized software (GE EchoPAC; GE Vingmed, Norway).
Results: A total of 4052 volunteers were divided into quintiles by systolic or diastolic blood pressure (systolic pressure cut point 110, 118, 126, 136mmHg; diastolic pressure cur=t point 68, 71, 80, 85mmHg). A trend toward the greater systolic or diastolic pressure, the higher LA diameter, LA volume and LA strain rate across 5 groups were observed (Table1 and Table 2, all trend p<0.001 except LA SRs).
Conclusion: Increased in systolic and diastolic pressure were independently associated with increased LA strain rate, LA diameter and LA volume in asymptomatic populations.
Author Disclosures: T. Yang: None. T. Hung: None. J. Kuo: None. J. Hou: None. H. Yeh: None. C. Hung: None.
- © 2015 by American Heart Association, Inc.