Q. What do you mean by Subxiphoid Long Axis Sweep?

This sweep begins with keeping the transducer at subxiphoid region, positioning directly posterior with marker pointing towards left. This cut provide the relationship between abdominal aorta and IVC (aorta towards left of the IVC and spine in visceral situs solitus and towards right in situs inversus). This view decides the situs of viscera as well atrial situs because transducer Position for Subxiphoid long axis and short axis visceral situs has good correlation with atrial situs. Now transducer is moved cranially .The most posterior plane demonstrates systemic veins, right and left upper pulmonary veins entering into the heart together with the coronary sinus at posterior aspect of interatrial septum. In the next view all four chambers can be evaluated. In this view fossa ovalis area is seen. Next two views are obtained by angulating transducer further cranially. These views provide structural details of semilunar valve, origin of great vessels, defects of perimembranous and muscular interventricular septum.