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Comparison of the usefulness of doppler pressure half-time in mitral stenosis in patients < 65 and ≥ 65 years of age

The American journal of cardiology, 1996-12, Vol.78 (12), p.1390-1393 [Peer Reviewed Journal]

1997 INIST-CNRS ;ISSN: 0002-9149 ;EISSN: 1879-1913 ;DOI: 10.1016/S0002-9149(9X)00644-5 ;PMID: 8970412 ;CODEN: AJCDAG

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  • Title:
    Comparison of the usefulness of doppler pressure half-time in mitral stenosis in patients < 65 and ≥ 65 years of age
  • Author: ABASCAL, V. M ; MORENO, P. R ; RODRIGUEZ, L ; MONTERROSO, V. M ; PALACIOS, I. G ; WEYMAN, A. E ; DAVIDOFF, R
  • Subjects: Age Factors ; Aged ; Biological and medical sciences ; Cardiac Catheterization ; Cardiovascular system ; Echocardiography, Doppler ; Female ; Hemodynamics ; Humans ; Investigative techniques, diagnostic techniques (general aspects) ; Linear Models ; Male ; Medical sciences ; Middle Aged ; Mitral Valve Stenosis - diagnostic imaging ; Ultrasonic investigative techniques
  • Is Part Of: The American journal of cardiology, 1996-12, Vol.78 (12), p.1390-1393
  • Description: Doppler pressure half-time is a reliable method for estimating mitral valve area when net left atrial and ventricular compliance remain stable. The accuracy of Doppler pressure half-time in estimating mitral valve area in older patients is unknown. We studied 80 patients (65 women and 15 men, aged 56 +/- 14 years) with cardiac catheterization and echocardiography. Mitral valve area was calculated using the Gorlin formula and by the Doppler pressure half-time method. Patients were stratified into those aged < 65 years (n = 57), and those aged > or = 65 years (n = 23). The discordance between pressure half-time and Gorlin-derived mitral valve area was assessed and related to multiple clinical, echocardiographic, and hemodynamic variables. The difference between pressure half-time and Gorlin-derived mitral valve area was greater in the older than in the younger patient (0.34 +/- 0.30 vs 0.15 +/- 0.27 cm2, p = 0.009) but the older group had smaller mitral valve areas by the Gorlin method (0.72 +/- 0.18 vs 0.89 +/- 0.32 cm2, p = 0.02) and lower cardiac output. The difference between pressure half-time and Gorlin remained greater in the group of older patients (0.32 +/- 0.30 vs 0.19 +/- 0.22 cm2, p = 0.04), even when the analysis was restricted to patients with similar mitral valve area (< 1 cm2 by the Gorlin method). Using multivariate analysis, age > or = 65 years remained the only significant predictor of the discrepancy between pressure half-time and Gorlin mitral valve area. Thus, when compared with Gorlin-derived mitral valve area, pressure half-time overestimated valve area in older patients, and this technique for estimating mitral valve area should be used with caution in patients > or = 65 years of age.
  • Publisher: New York, NY: Elsevier
  • Language: English
  • Identifier: ISSN: 0002-9149
    EISSN: 1879-1913
    DOI: 10.1016/S0002-9149(9X)00644-5
    PMID: 8970412
    CODEN: AJCDAG
  • Source: MEDLINE
    Alma/SFX Local Collection
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