Three Dimensional Transesophageal Echocardiography as a Predictive Tool to Assess the Outcome of Mitral Valve Plasty

Bruggink, Robin (2015) Three Dimensional Transesophageal Echocardiography as a Predictive Tool to Assess the Outcome of Mitral Valve Plasty.

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Abstract:Aim Mitral valve plasty has shown its advantages in comparison with mitral valve replacement. However, a lot of patients get a replacement while repair is preferred, which can be explained by the high complexity of the surgery. The aim of this study was to create a model to predict the annuloplasty ring size and leaflet resection based on 3D-TEE images. Method and Materials Retrospective per-operative 3D-TEE data was collected from patients who underwent mitral valve plasty. The annulus circumference, leaflet lengths, leaflet area and intercommissural distance were determined with use of the Mitral Valve Navigator. These parameters were compared with the implemented ring for creating univariate prediction models. Results 28 patients were included into this study. The intercommissural distance, leaflet area and circumference are significant predictors for the implanted ring size (p <0.01, r2: 0.76, 0.74 and 0.74). No multivariate model could be created due to multicollinearity. Initial validation was performed with 11 patients, in which the model had a r2 of 0.85, which is promising. Conclusion In this study a new, promising, tool is created to standardize the current annuloplasty sizing technique. However, adaptations in the measurement software have to be made to increase the intra-/inter-observer variability.
Item Type:Essay (Master)
Clients:
Unknown organization, Nederland
Faculty:TNW: Science and Technology
Subject:44 medicine
Programme:Technical Medicine MSc (60033)
Link to this item:http://purl.utwente.nl/essays/69056
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