MR: Quantification (PISA)

Questions

1.Proximal Isovelocity Hemispheric Radius from the Orifice?

2.Aliasing Velocity at the Radial Distance r?

About

The PISA method, based on the principle of conservation of flow and the continuity equation, is the best method for quantifying the ERO and the volume of MR.

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

Enriquez-Sarano M et al.

Effective mitral regurgitant orifice area: clinical use and pitfalls of the proximal isovelocity surface area method.

Journal of the American College of Cardiology 1995 March 1, 25 (3): 703-9

Utsonomiya T et al.

Doppler color flow “proximal isovelocity surface area” method for estimating volume flow rate: effect of orifice shape and machine factors. JACC 1991; 17; 1103

Zoghbi WA et al.

Recommendations for evaluation of the severity of native valvular regurgitation with two-dimensional Doppler Echocardiography.

Journal of the American Society of Echocardiography 2003, 16 (7): 777-802

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1. Proximal Isovelocity Hemispheric Radius from the Orifice?

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