MS: Mitral Valve Area (PISA)

Questions

1.Proximal Isovelocity Hemispheric Radial Distance from the Orifice?

2.Aliasing Velocity at the Radial Distance r?

4.Angle between the 2 Mitral Leaflets on the Atrial Side?

About

When the aliasing velocity is high (ie > 40 cm/s) the bottom surface of the PISA hemisphere is relatively flat, which negates the need for an angle correction.

References

Robert O Bonow, Blase A Carabello et al.

ACC/AHA 2006 guidelines for the management of patients with valvular heart disease: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (writing committee to revise the 1998 Guidelines for the Management of Patients With Valvular Heart Disease): developed in collaboration with the Society of Cardiovascular Anesthesiologists: endorsed by the Society for Cardiovascular Angiography and Interventions and the Society of Thoracic Surgeons.

Circulation 2006 August 1, 114 (5): e84-231

Oh J, Seward JB, Tajik AJ.

The Echo Manual 3rd edition. Lippincott, Williams, Wilkins. 2007

Kern MJ.

The Cardiac Catheterization Handbook 4th Edition. Mosby 2003

Rodriguez L. et al.

Validation of the proximal flow convergence method. Calculation of orifice area in patients with mitral stenosis.

Circulation 1993, 88 (3): 1157-65

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1. Proximal Isovelocity Hemispheric Radial Distance from the Orifice?

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