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ECHOCARDIOGRAPHY VIEWS Main Imaging Windows 1- Parasternal window 2- Apical window 3- Subcostal / Subxyphoid window Parasternal Long Axis Generally the first view obtained in a routine transthoracic echocardiogram. It is the standard view for making M-mode and 2D measurements of the left ventricle, estimate size & contractility of the right and left ventricle (septum and posterior wall), and to assess morphology and function of the mitral and aortic valves. aortic root and left atrium. The patient is best imaged lying on their left side, with their left arm under their head. With color Doppler you can assess for aortic or mitral regurgitation. In the appropriate standard view the apex is not visible. The left ventricle is oriented almost horizontally. Parasternal Short Axis 3 levels of imaging the heart in short axis: Base of the heart, level of the aortic valve Level of the mitral valve Mid-ventricle: papillary muscles & towards apex This position encompasses several different views of the LV in short axis that differ in how basal or apical the probe is. The most basal window lays out the aortic valve, pulmonic valve, and tricuspid valve. Other standard views include the LV at the mitral valve level, the mid ventricle level and apex all shown sequentially below. Short Axis Tricuspid & Pulmonic Valve View Apical Place probe at point of maximal impulse. There are numerous views that obtained from this position including 4 chamber view, 5 chamber view (includes LV outflow tract), the 2 chamber view and the apical long axis view (“3 chamber view”) all by rotation and minor manipulation of the probe. Most useful for: Assessing flow across aortic, tricuspid and mitral valves with Doppler. Assessment of diastolic function, including use of tissue Doppler and pulsing across the pulmonary veins. Assessment of RV size and function including use of tricuspid annular plane systolic excursion (TAPSE) Evaluation of LV segmental wall motion and of LV thrombus sometimes with an IV echo contrast agent. Assessment for a PFO or ASD in conjunction with the use of saline contrast Apical 4 Chamber Can visualize the 4 main chambers of the heart: left ventricle and atrium, right ventricle and atrium. Best view to calculate the ejection fraction, to visualize the apex of the left ventricle, and to study the mitral inflow (diastolic function and mitral stenosis) Short Axis Pulmonary Artery View Apical 5 Chamber Differs from apical 4 chamber view by presence of the aortic valve in the center of the image. By tilting the head of the probe upwards you move to more anterior structures and create the apical 5 chamber position, the LVOT, aortic valve and proximal aorta can be seen. This is the view with the best alignment of the Doppler beam with the aortic outflow tract, to look and grade an aortic stenosis and to calculate the cardiac output. Apical Long Axis This view shows similar structures to the parasternal long axis except now the LV apex is well visualized and is in the near field. Subcostal 4 Chamber Excellent for looking at the anterior RV free wall, assess for RV thickness, and for evaluation of pericardial effusions. Useful views for evaluating flow across the intra-atrial septum for the presence of a PFO or ASD. Scan under the subxyphoid process until a standard 4 chamber view obtained; increasing depth is usually needed depending on how high up the heart is located. Inferior Vena Cava Determination of IVC diameter and respiratory variations can be used for the estimation of a patient's volume status.