Conventional Echocardiography and Two-Dimensional Speckle Tracking in Healthy Sevoflurane-Anesthetized Dogs Undergoing Continuous Rate Infusion of Nalbuphine

Figure 3

Representative 2D echocardiographic image obtained from a healthy dog providing a left apical 4-chamber view of the left ventricle in which a region of interest with delineation of endocardial border has been adjusted manually. The myocardium has been automatically divided into 6 segments for strain analysis: basal septal, middle septal, apical septal, apical lateral, middle lateral, and basal lateral. The bottom panel provides color-coded longitudinal strain curves for each of the 6 segments, with strain value on the y-axis and time in seconds on the x-axis. Strain values for each segment are indicated and represent the corresponding percentage.