Apical 4 chamber:Area:Pt:Heart.atrium.right:Qn:US.2D
apical 4 chamber:area:pt:heart.atrium.right:qn:us.2d
Apical 4 chamber:Area:To identify measures at a point in time:Heart.atrium.right:Quantitative:Ultrasound.2D
apical 4 chamber:area:to identify measures at a point in time:heart.atrium.right:quantitative:ultrasound.2d