Hemodynamic Significance of Mitral Stenosis: Use of a Simple, Novel Index by 2-Dimensional Echocardiography

Seow, Swee‐Chong; Koh, Lay-Pheng; Yeo, Tiong-Cheng

doi:10.1016/j.echo.2005.07.012

Cited by 21 publications

(40 citation statements)

References 14 publications

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“…These results were similar to Seow SC et al 2006 24 as they announced an MLS index of 12.5 mm for mild MS, 11.1 mm for moderate MS and 8.4 for severe MS with 92.3% sensitivity and 100% specificity.…”

Section: Discussionsupporting

confidence: 89%

“…The MLS demonstrated a very good correlation with MVA measured with 2D planimetry and PHT methods and is very easy to obtain in the hands of the inexperienced and in special setting like Cath lab 24, 26, 27…”

Section: Discussionmentioning

confidence: 84%

“…The mitral leaflet separation (MLS) index, measuring the distance between the tips of the mitral leaflets in parasternal long-axis and four- chamber views, these two readings were averaged to yield the mitral leaflet separation index 24, 26…”

Section: Discussionmentioning

confidence: 99%

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Mitral leaflet separation index. An easy two dimensional echocardiography technique for assessment of mitral valve area before and after percutaneous balloon mitral valvuloplasty

Raafat

Ramzy

El-Hadidy

et al. 2018

The Egyptian Heart Journal

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AimTo evaluate the reliability of the mitral leaflet separation (MLS) index against the traditional echocardiographic methods in measuring mitral valve area (MVA) pre and post percutaneous balloon mitral valvuloplasty (PBMV).MethodsNinety patients suffering symptomatic moderate to severe MS underwent PBMV at Ain Shams University Hospital in cardiology department. Seventy of the patients were females representing 77.8% and 20 were males representing 22.2%. Their age ranged from 22 to 56 years. All patients were subjected to full transthoracic echocardiography (TTE) examination pre and post PBMV. MLS index was introduced as a comparative parameter with traditional echocardiographic methods for assessment of MVA, measuring average of distance between tips of MV leaflets in parasternal long axis and four chamber two dimensional echocardiographic views.ResultsMVA increased from 0.95 ± 0.28 to 2.21 ± 0.41 cm2 (P=0.001) using 2D planimetry; and increased from 0.93 ± 0.23 to 2.21 ± 0.46 cm2 (P= 0.0011) by pressure half time method (PHT). MLS index was correlated with MVA by 2D planimetry pre and post PBMV (r=0.453) and (r=0.668) respectively (p=0.0001) and strongly correlated with MVA using PHT post PBMV (r=0.768) (p=0.0001). Post PBMV 14 patients suffered significant mitral regurgitation 3 of them were transferred to surgery. MLS index above 11.75 mm and below 9.15 mm had excellent positive predictive value for detecting mild and severe MS respectively.ConclusionThe MLS index it is a simple and effective method for assessment of the MVA, it has an excellent correlation with MVA with an excellent sensitivity and specificity for the prediction of effective MVA. The MLS index cannot evaluate outcome of PBMV because it is an anatomical parameter and not flow dependent thus does not correlate with grades of mitral regurgitation.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 84%

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Mitral leaflet separation index. An easy two dimensional echocardiography technique for assessment of mitral valve area before and after percutaneous balloon mitral valvuloplasty

Raafat

Ramzy

El-Hadidy

et al. 2018

The Egyptian Heart Journal

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“…Left atrial enlargement was present among 96% of patients irrespective of the severity of MS as also shown by Seow et al 21 and Jacob Jose et al 22 Seow et al calculated MS by planimetry as well as by pressure half time. 21 Both the methods are equally safe for calculation of mitral valve area. The planimetry and pressure half-time method correlates in various studies shown the relevant significance in this study also.…”

mentioning

confidence: 55%

“…The Mitral Valve Area (MVA) can be measured by planimetry, pressure half time, continuity equation and proximal isovelocity surface area methods. 10,11 In this work, we study the novel index proposed by Seow et al in 2006. This is a mitral leaflet separation index, henceforth referred as MLS index, which is independent measure assessment of severity of mitral stenosis.…”

Section: Introductionmentioning

confidence: 99%

Study of a Novel Index Mitral Leaflet Separation Index by 2-Dimensional Echocardiography to Assess the Severity of Mitral Stenosis

Garg¹,

Agarwal²,

Shoaib³

et al. 2017

jebmh

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BACKGROUNDMitral stenosis results due to structural abnormality of the mitral valve apparatus, which prevents proper opening of mitral valve during diastole. The Mitral Valve Area (MVA) can be measured by planimetry, pressure half time, continuity equation and proximal isovelocity surface area methods. Direct measurement of MVA by planimetry is accurate, but highly operator dependent and laborious. The novel index proposed by Seow in 2006. This is a mitral leaflet separation index, henceforth referred as MLS index, which is independent measure assessment of severity of mitral stenosis.

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Vortex Formation in the Heart

Kheradvar

Pedrizzetti

2011

Vortex Formation in the Cardiovascular System

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Hemodynamic Significance of Mitral Stenosis: Use of a Simple, Novel Index by 2-Dimensional Echocardiography

Cited by 21 publications

References 14 publications

Mitral leaflet separation index. An easy two dimensional echocardiography technique for assessment of mitral valve area before and after percutaneous balloon mitral valvuloplasty

Mitral leaflet separation index. An easy two dimensional echocardiography technique for assessment of mitral valve area before and after percutaneous balloon mitral valvuloplasty

Study of a Novel Index Mitral Leaflet Separation Index by 2-Dimensional Echocardiography to Assess the Severity of Mitral Stenosis

Vortex Formation in the Heart

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