Intraoperative Application of Geometric Three-Dimensional Mitral Valve Assessment Package: A Feasibility Study

Mahmood, Feroze; Karthik, Swaminathan; Subramaniam, Balachundhar; Panzica, Peter; Mitchell, John D.; Lerner, Adam; Jervis, Karinne; Maslow, Andrew

doi:10.1053/j.jvca.2007.12.014

Cited by 31 publications

(24 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For 15 years the finding received little attention until our group described the influence of annular saddle shape on leaflet stress [2, 3]. Since that time we have continued to refine the description of regional mitral annular geometry using 3D echocardiography [4–7]. This information has, to some extent, been useful in guiding annuloplasty ring selection as well as annuloplasty ring design [8–12].…”

Section: Introductionmentioning

confidence: 99%

Regional Annular Geometry in Patients With Mitral Regurgitation: Implications for Annuloplasty Ring Selection

Jassar

Vergnat

Jackson

et al. 2014

The Annals of Thoracic Surgery

View full text Add to dashboard Cite

Background The saddle shape of the normal mitral annulus has been quantitatively described by several groups. There is strong evidence that this shape is important to valve function. A more complete understanding of regional annular geometry in diseased valves may provide a more educated approach to annuloplasty ring selection and design. We hypothesized that mitral annular shape is markedly distorted in patients with diseased valves. Methods Real-time 3-dimensional echocardiography was performed in patients with normal mitral valves (n=20), ischemic mitral regurgitation (IMR, n=10) and myxomatous mitral regurgitation (MMR, n=20). Thirty-six annular points were defined to generate a 3D model of the annulus. Regional annular parameters were measured from these renderings. Left ventricular inner diameter (LVIDd) was obtained from 2D echocardiographic images. Results Annular geometry was significantly different between the three groups. The annuli were larger in the MMR and the IMR groups. The annular enlargement was greater and more pervasive in the MMR. Both diseases were associated with annular flattening though the regional distribution of that flattening was different between groups. LVIDd was increased in both groups. However, relative to the LVIDd, the annulus was disproportionately dilated in the MMR group. Conclusion Patients with MMR and IMR have enlarged and flattened annuli. In the case of MMR, annular distortions may be the driving factor leading to valve incompetence. These data suggest that the goal of annuloplasty should be the restoration of normal annular saddle shape and that the use of flexible, partial and flat rings may be ill advised.

show abstract

Section: Introductionmentioning

confidence: 99%

Regional Annular Geometry in Patients With Mitral Regurgitation: Implications for Annuloplasty Ring Selection

Jassar

Vergnat

Jackson

et al. 2014

The Annals of Thoracic Surgery

View full text Add to dashboard Cite

show abstract

“…Circularity index is the ratio of the AP and the AL-PM diameter of the mitral valve at the annular plane, and is an automatically generated value. [29] A normal mitral valve has a circularity index less than 1 as the AP diameter is less than the AL-PM diameter. As the annulus dilates in the AP direction, circularity index increases to 1 and mitral annulus appears perfectly circular.…”

Section: Discussionmentioning

confidence: 99%

Echocardiographic quantification of mitral valvular response to myocardial revascularization

et al. 2013

Self Cite

View full text Add to dashboard Cite

show abstract

“…Models can also be used in the development of new annuloplasty rings that will help restore normal geometry. A future direction of 3DE is in the application of these tools clinically [3,4].…”

Section: Mitral Valve Anatomymentioning

confidence: 99%

Three-Dimensional Echocardiography and Mitral Valve Disease

Chapman

Rahko

2010

Curr Cardiol Rep

View full text Add to dashboard Cite

Three-dimensional echocardiography is a growing imaging modality, particularly for the evaluation of mitral valve pathology. Functional anatomy in disease states such as mitral regurgitation and stenosis as well as prosthetic valves can be effectively studied, offering superior knowledge to treating physicians. Additionally, three-dimensional echocardiography has the ability to help guide operative and percutaneous interventions, allowing for improved patient outcomes and advancement of clinical research. Continued experience with three-dimensional echocardiography will further our knowledge of the mitral valve and refine current indications for cardiovascular imaging.

show abstract

Intraoperative Application of Geometric Three-Dimensional Mitral Valve Assessment Package: A Feasibility Study

Cited by 31 publications

References 14 publications

Regional Annular Geometry in Patients With Mitral Regurgitation: Implications for Annuloplasty Ring Selection

Regional Annular Geometry in Patients With Mitral Regurgitation: Implications for Annuloplasty Ring Selection

Echocardiographic quantification of mitral valvular response to myocardial revascularization

Three-Dimensional Echocardiography and Mitral Valve Disease

Contact Info

Product

Resources

About