Document Type

Thesis

Degree

Master of Science (MS)

Department

Biomedical Engineering

First Advisor's Name

Sharan Ramaswamy

First Advisor's Committee Title

Committee Chair

Second Advisor's Name

Jessica Ramella-Roman

Second Advisor's Committee Title

Committee Member

Third Advisor's Name

Joshua Hutcheson

Third Advisor's Committee Title

Committee Member

Keywords

Pediatric, Mitral Valve, Valve Replacement, Hydrodynamic Assessment, Porcine SIS Bioscaffold, Cormatrix, Pulse Duplicator System

Date of Defense

7-6-2017

Abstract

Valve replacement for critical heart valve diseases is in many cases not an option. Our clinical experience in pediatric compassionate care has shown robust function of porcine small intestinal submucosa (PSIS) valves. We assessed functional effectiveness of 4ply (~320µm) and 2ply (~166µm) PSIS mitral valves under pediatric-relevant hemodynamic pulsatile conditions. Key conclusions: (i)PSIS valves demonstrated statistically similar acute functionality in comparison to a commercially available valve. (ii)Energy losses were similar (p>0.05) under pediatric conditions which was not the case under adult aortic conditions. (iii)2ply valves were observed to be superior to 4ply, based on the robust hydrodynamic data, the mechanical properties suitable for pediatric applications and de-novo tissue replacement potential with less demand on the body. Demonstrating somatic growth, valve tissue filling matching PSIS degradation and PSIS-valve fatigue assessment are critical endeavors that need to be carried out to ensure mid to long term function of these bioscaffold mitral valves.

Identifier

FIDC001957

Share

COinS
 

Rights Statement

Rights Statement

In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).