Two-dimensional and three-dimensional dobutamine stress echocardiography in assessment of cardiac ischemia in the elderly / 中华老年医学杂志

ABSTRACT

Objective This study was designed to test the feasibility and efficacy using live three-dimensional echocardiography (3D) to detect ischemia in elderly people during dobutamine-induced stress(DSE) and two-dimensional echocardiography (2D). The results were compared with that of the conventional methods. Methods Live three-dimensional echocardiography, a new 3D imaging technique, offers rapid acquisition with comprehensive simultaneous views of the left ventricle (LV), and it is applicable during stress. A total of 83 consecutive patients(aged 51-86 years)were screened for image quality by 2D and 3D within 30 s at baseline and at peak DSE. Results Live three-dimensional echocardiography and 2D showed good concordance in detection of abnormal LV wall motion at baseline (r=0.82, Kappa=0.56) and at peak DSE (r=0.81, Kappa=0.62). Left ventricular wall motion scores were similar at baseline and peak DSE using both techniques. Interobserver and intraobservr agreement for detection of ischemia at peak DSE were superior for3D DSE and at baseline for 2D DSE. Mean scanning time from 40 randomly selected patients in 2D DSE was (63.1?21.2) s and in 3D DSE was (26.5?12.1)s (P