Comparison between three types of stented pericardial aortic valves (Trivalve trial): study protocol for a randomized controlled trial

Kasra Azarnoush, Bruno Pereira, Christian Dualé, Enrica Dorigo, Mehdi Farhat, Andrea Innorta, Nicolas Dauphin, Etienne Geoffroy, Pascal Chabrot, Lionel Camilleri, Kasra Azarnoush, Bruno Pereira, Christian Dualé, Enrica Dorigo, Mehdi Farhat, Andrea Innorta, Nicolas Dauphin, Etienne Geoffroy, Pascal Chabrot, Lionel Camilleri

Abstract

Background: Aortic valve stenosis is one of the most common heart diseases in older patients. Nowadays, surgical aortic valve replacement is the 'gold standard' treatment for this pathology and the most implanted prostheses are biological ones. The three most implanted bovine bioprostheses are the Trifecta valve (St. Jude Medical, Minneapolis, MN, USA), the Mitroflow valve (Sorin Group, Saluggia, Italy), and the Carpentier-Edwards Magna Ease valve (Edwards Lifesciences, Irvine, CA, USA). We propose a randomized trial to objectively assess the hemodynamic performances of these bioprostheses.

Methods and design: First, we will measure the aortic annulus diameter using CT-scan, echocardiography and by direct sizing in the operating room after native aortic valve resection. The accuracy of information, in terms of size and spatial dimensions of each bioprosthesis provided by manufacturers, will be checked. Their hemodynamic performances will be assessed postoperatively at the seventh day and the sixth month after surgery.

Discussion: This prospective controlled randomized trial aims to verify and compare the hemodynamic performances and the sizing of these three bioprostheses. The data obtained may help surgeons to choose the best suitable bioprosthesis according to each patient's morphological characteristics.

Trial registration: ClinicalTrials.gov Identifier: NCT01522352.

Figures

Figure 1
Figure 1
Study’s flowchart.
Figure 2
Figure 2
Importance of the use of flat-head candles to measure the aortic ring (bottom of the picture) compared to Hegar dilators.

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