Tients with CAD were found with mild mitral regurgitation, whereas none had moderate to severe regurgitation.value,0.05, 0.01, respectively). No similar patterns were found in global RA deformation properties (data not shown). Interobserver variability for strain was 567 , and intraobserver variability was 1.660.6 . In addition, inter- and intraobserver variability for strain rate was 0.0960.06 s21 and 0.0760.05 s21, respectively.VVI AnalysisData from VVI by the severity of Title Loaded From File coronary stenosis are summarised in Table 3. The VVI analysis was feasible among all subjects with acceptable echocardiographic images. The average values for the global maximal LA volume index in control, mild CAD and severe CAD groups were 30.41611.73 mL/m2, 33.6869.34 mL/m2, 31.41611.21 mL/m2 (P Value, 0.60). No differences in the LA and RA Peak dv/dt were observed. Longitudinal es and SRs of LA tended to be decreased among CAD patients, even though the differences didn’t reach statistical significance. Compared with those in the control group, the 2 CAD groups had lower global and lateral SRe (P value ,0.05), without significant further decrease with increasing severity of coronary stenosis. LA lateral SRa was increased in severe CAD group. By contrast, SRe of RA didn’t differ across 3 groups, whereas RA global and lateral ea, SRa and ea/es ratio was Title Loaded From File apparently increased in mild and severe CAD groups. The results of LA deformation analysis by the distribution pattern of involved coronary artery (left anterior descending coronary artery (LAD), left circumflex coronary artery (LCX), and right coronary artery (RCA)) are shown in Table 4. Among the patients with exclusively LAD stenosis and those with exclusively LCX or RCA stenosis, maximal LA volumes remained similar while longitudinal LA global SRe decreased appreciably as compared with the controls. However, SRa and ea/es ratio of LA were significantly increased only in LAD stenosis group (PDiscussionThe atrium has an important role in optimizing overall cardiac function, acting as a reservoir, a conduit, and a booster pump for blood returning to the heart [21]. The changes in LA size and function are associated with cardiovascular disease and are risk factors for atrial fibrillation, stroke, and death [7,22]. We evaluated comprehensive atrial functions among CAD patients, and investigated the association between atrial deformation and the severity of CAD or the distribution pattern of involved coronary artery, by using VVI. Our study showed a high feasibility. CAD patients were found with decreased SRe of LA as well as increased ea, SRa and ea/es ratio of RA. Patients with exclusively LAD stenosis were found with significantly enhanced SRa and ea/es ratio of LA, while patients with exclusively LCX/ RCA stenosis were not. LA function measured as volumetric parameters by real-time three-dimenstional echocardiography is considered a robust marker of LV filling pressure and an indicator of LV diastolic function [23]. Recent studies have shown that LA myocardial deformation parameters might be reduced before the atrial volume was changed [24,25]. Furthermore, it is recommended to use several, rather than single doppler echocardiographic technique for the accurate assessment of cardiac diastolic function [26]. VVI is an emerging and promising angle-independent echocardiographic technique to measure strain by speckles tracking, which overcomes the limitations of tissue doppler imaging [27].Atrial Deformation and Corona.Tients with CAD were found with mild mitral regurgitation, whereas none had moderate to severe regurgitation.value,0.05, 0.01, respectively). No similar patterns were found in global RA deformation properties (data not shown). Interobserver variability for strain was 567 , and intraobserver variability was 1.660.6 . In addition, inter- and intraobserver variability for strain rate was 0.0960.06 s21 and 0.0760.05 s21, respectively.VVI AnalysisData from VVI by the severity of coronary stenosis are summarised in Table 3. The VVI analysis was feasible among all subjects with acceptable echocardiographic images. The average values for the global maximal LA volume index in control, mild CAD and severe CAD groups were 30.41611.73 mL/m2, 33.6869.34 mL/m2, 31.41611.21 mL/m2 (P Value, 0.60). No differences in the LA and RA Peak dv/dt were observed. Longitudinal es and SRs of LA tended to be decreased among CAD patients, even though the differences didn’t reach statistical significance. Compared with those in the control group, the 2 CAD groups had lower global and lateral SRe (P value ,0.05), without significant further decrease with increasing severity of coronary stenosis. LA lateral SRa was increased in severe CAD group. By contrast, SRe of RA didn’t differ across 3 groups, whereas RA global and lateral ea, SRa and ea/es ratio was apparently increased in mild and severe CAD groups. The results of LA deformation analysis by the distribution pattern of involved coronary artery (left anterior descending coronary artery (LAD), left circumflex coronary artery (LCX), and right coronary artery (RCA)) are shown in Table 4. Among the patients with exclusively LAD stenosis and those with exclusively LCX or RCA stenosis, maximal LA volumes remained similar while longitudinal LA global SRe decreased appreciably as compared with the controls. However, SRa and ea/es ratio of LA were significantly increased only in LAD stenosis group (PDiscussionThe atrium has an important role in optimizing overall cardiac function, acting as a reservoir, a conduit, and a booster pump for blood returning to the heart [21]. The changes in LA size and function are associated with cardiovascular disease and are risk factors for atrial fibrillation, stroke, and death [7,22]. We evaluated comprehensive atrial functions among CAD patients, and investigated the association between atrial deformation and the severity of CAD or the distribution pattern of involved coronary artery, by using VVI. Our study showed a high feasibility. CAD patients were found with decreased SRe of LA as well as increased ea, SRa and ea/es ratio of RA. Patients with exclusively LAD stenosis were found with significantly enhanced SRa and ea/es ratio of LA, while patients with exclusively LCX/ RCA stenosis were not. LA function measured as volumetric parameters by real-time three-dimenstional echocardiography is considered a robust marker of LV filling pressure and an indicator of LV diastolic function [23]. Recent studies have shown that LA myocardial deformation parameters might be reduced before the atrial volume was changed [24,25]. Furthermore, it is recommended to use several, rather than single doppler echocardiographic technique for the accurate assessment of cardiac diastolic function [26]. VVI is an emerging and promising angle-independent echocardiographic technique to measure strain by speckles tracking, which overcomes the limitations of tissue doppler imaging [27].Atrial Deformation and Corona.
