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Acute Pulmonary Embolism


"D" sign:
In a physiologically normal heart, LV pressure > RV pressure. When viewing heart in a parasternal short

 axis during systole the LV maintains a circular appearance, bowing the intraventricular septum into the

 right ventricle. A D-shaped left ventricle or flattening of the interventricular septum with a D-shaped

 configuration is a feature described with significant RV overload / right heart strain such as that occurring

 with complications of a sizable pulmonary embolic event.

McConnell's sign:

An echocardiographic finding of segmental right ventricular wall‐motion abnormality with apical sparing,

 is highly specific in acute pulmonary embolism and may guide rapid intervention when other testing is

 not feasible.

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