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J Am Coll Cardiol, 2002; 40:1809-1815
© 2002 by the American College of Cardiology Foundation
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Is the mitral valve area flow-dependent in mitral stenosis?

A dobutamine stress echocardiographic study

Jagdish C. Mohan, MD*, Ayan R. Patel, MD, FACC{dagger}, Rajiv Passey, MD*, Dinesh Gupta, MD*, Manoj Kumar, MD*, Ramesh Arora, MD* and Natesa G. Pandian, MD, FACC{dagger},*

* Department of Cardiology, G. B. Pant Hospital, New Delhi, India
{dagger} Cardiovascular Imaging and Hemodynamic Laboratory, Tufts-New England Medical Center, Boston, Massachusetts, USA



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Figure 1 Changes in cardiac output during dobutamine administration in group I (A) and group II (B). *p < 0.0001 compared to baseline.

 


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Figure 2 (A) Changes in planimetered mitral valve area (MVA) during dobutamine infusion in group I. (B) Changes in MVA derived by the pressure half-time method during dobutamine infusion in group I. *p < 0.0001, {dagger}p = 0.0002 compared with baseline.

 


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Figure 3 (A) Changes in planimetered mitral valve area (MVA) during dobutamine infusion in group II. (B) Changes in MVA derived by the pressure half-time method during dobutamine infusion in group II. *p = 0.0035, {dagger}p = 0.001 compared with baseline.

 





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