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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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contentuptodate· Content· item f24_55_25457

©2013 UpToDate ® Print Email Two-dimensional transthoracic echocardiogram (2D TTE) from the subcostal view showing a normal inferior vena cava (IVD) during respiration The subcostal view in a normal subject shows the inferior vena cava (IVC). Left panel: Prior to inspiration, the normal diastolic IVC diameter (arrows) is less than 20 mm. Right panel: During inspiration, the IVC collapses to less than 50 percent of its original diameter. L: liver.