Determination of mitral valve area through pressure half-time measurements in the left atrium and pulmonary capillary wedge.

Autor:	Osterne EC; Hospital das Forças Armadas, Instituto do Coração de Taguatinga, DF, Brazil. osterne@cardiol.br, Haddad J, da Motta VP, da Motta PA, Osterne TE, Osterne NM, Gomes OM
Jazyk:	English; Portuguese
Zdroj:	Arquivos brasileiros de cardiologia [Arq Bras Cardiol] 2006 Dec; Vol. 87 (6), pp. 705-10.
DOI:	10.1590/s0066-782x2006001900005
Abstrakt:	Objective: To confirm the validity of the calculation in MVA applying the method of Doppler pressure half-time directly in left atrial (LA) and pulmonary capillary pressure curve. Methods: Thirty-five patients with mitral valve stenosis underwent percutaneous mitral valvotomy (PMV) using the Cribier method with MVA measurement made using the traditional methods (Gorlin and echo-Doppler) and this propose. MVA values obtained were compared and a linear regression model was used to obtain formula for reciprocal calculations of the mitral valve area. Results: A statistically correlation was found between the calculated values by all methods. The proposed method showed a strong correlation (p< 0.05) with the others mainly before valve opening. Simple reciprocal calculation formulas were found for mitral valve area assessment. Conclusion: The proposed method for the calculation of mitral valve area using LA or Cap proved to be highly accurate and simple making it possible to safely monitor valvotomy procedures.
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu