Mitral annulus velocity in the estimation of left ventricular filling pressure: prospective study in 200 patients.
J Am Soc Echocardiogr
; 13(11): 980-5, 2000 Nov.
Article
in En
| MEDLINE
| ID: mdl-11093099
ABSTRACT
The ratio of early mitral inflow to early mitral annular velocity (E/E') was suggested as a useful index in the estimation of left ventricular filling pressure. This study was performed to validate the clinical usefulness of E/E' ratio in a large number of patients. Simultaneous left ventricular pressure measurements and Doppler examinations were performed in 200 consecutive patients at the cardiac catheterization laboratory. The E/E' ratio correlated well with pre-A-wave pressure (r = 0.74, P <.001), and the correlation was not dependent on the left ventricular systolic function (ejection fraction [EF] > or = 50% r = 0.74, P <.001 versus EF <50% r = 0.70, P <.001). The E/E' ratio of > or = 9 best discriminated elevated (<12 mm Hg) from normal left ventricular pre-A pressure with a sensitivity of 81% and a specificity of 80%. Our study results also showed that quantitative estimation of left ventricular pre-A pressure could be suggested by the simplified equation of pre-A pressure = E/E' + 4 with reasonable accuracy.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Ventricular Function, Left
/
Ventricular Pressure
/
Mitral Valve
Type of study:
Observational_studies
Limits:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
J Am Soc Echocardiogr
Journal subject:
DIAGNOSTICO POR IMAGEM
Year:
2000
Document type:
Article