Research Article

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

Figure 1

Representative 2D echocardiographic image obtained from a healthy dog providing a right parasternal short-axis view of the left ventricle at the level of the papillary muscles in which there is a region of interest drawn by the software that has been adjusted manually. The myocardium has been automatically divided into 6 segments for strain analysis: anterior, anterolateral, inferolateral, inferior, inferoseptal, and anteroseptal. The bottom panel provides color-coded circumferential strain curves for each of the 6 segments and a global strain curve (dotted white line), 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.