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A translational "humanised" porcine model for transcatheter mitral valve interventions: the neo inferior vena cava approach


Maisano, Francesco; Reser, Diana; Pavicevic, Jovana; Guidotti, Andrea; Denti, Paolo; Taramasso, Maurizio; Addis, Alessandro; Cesarovic, Nikola; Emmert, Maximilian Y; Nietlispach, Fabian; Swain, Julie; Falk, Volkmar; Leon, Martin (2015). A translational "humanised" porcine model for transcatheter mitral valve interventions: the neo inferior vena cava approach. EuroIntervention, 11(1):92-95.

Abstract

AIMS: Preclinical studies and translational animal models are fundamental for the development of new clinical interventions. Compared to human anatomy, pigs present a more anterior heart position in the chest which may jeopardise the imaging and testing of devices designed to be delivered to the human mitral valve. To imitate human anatomy, we developed a novel model to "humanise" a pig heart.
METHODS AND RESULTS: The creation of a neo inferior vena cava with a Dacron tube grafted to the right atrium was tested for transseptal delivery of an experimental mitral annuloplasty device in 35 animals. In 15 animals with native anatomy a conventional right transfemoral access was used. Imaging guidance was achieved with intracardiac or epicardial echocardiography. In all transfemoral approaches (n=15), the delivery of the device was unsuccessful and the handling was dissimilar to a human implant. In all neo-cava approaches (n=35), the handling and manoeuvring were as expected in humans, the targets were reached as intended and all procedures but one were successful.
CONCLUSIONS: A translational "humanised" animal model with the creation of a neo cava eliminates the differences between pig and human anatomy and is suitable for testing human grade devices.

Abstract

AIMS: Preclinical studies and translational animal models are fundamental for the development of new clinical interventions. Compared to human anatomy, pigs present a more anterior heart position in the chest which may jeopardise the imaging and testing of devices designed to be delivered to the human mitral valve. To imitate human anatomy, we developed a novel model to "humanise" a pig heart.
METHODS AND RESULTS: The creation of a neo inferior vena cava with a Dacron tube grafted to the right atrium was tested for transseptal delivery of an experimental mitral annuloplasty device in 35 animals. In 15 animals with native anatomy a conventional right transfemoral access was used. Imaging guidance was achieved with intracardiac or epicardial echocardiography. In all transfemoral approaches (n=15), the delivery of the device was unsuccessful and the handling was dissimilar to a human implant. In all neo-cava approaches (n=35), the handling and manoeuvring were as expected in humans, the targets were reached as intended and all procedures but one were successful.
CONCLUSIONS: A translational "humanised" animal model with the creation of a neo cava eliminates the differences between pig and human anatomy and is suitable for testing human grade devices.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Cardiovascular Surgery
Dewey Decimal Classification:610 Medicine & health
Language:German
Date:May 2015
Deposited On:02 Feb 2016 14:47
Last Modified:08 Dec 2017 17:37
Publisher:Europa Edition
ISSN:1774-024X
Publisher DOI:https://doi.org/10.4244/EIJY15M02_04
PubMed ID:25671425

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