In vitro testing of a temporary catheter-based aortic "parachute" valve

Stijn Vandenberghe, Stefano Salizzoni, Pietro Bajona, Kenton J Zehr, Giovanni Speziali

Research output: Contribution to journalArticle

Abstract

Recently developed technologies allow aortic valve implantation off-pump in a beating heart. In this procedure, the native, stenotic aortic valve is not removed, but simply crushed by a pressure balloon mounted on a percutaneous catheter. Removal of the native aortic cusps before valve replacement may reduce the incidence of annular or cuspal calcium embolization and late perivalvular leaks and increase implantable valve size. However, a temporary valve system in the ascending aorta may be necessary to maintain hemodynamic stability by reducing acute aortic regurgitation and left ventricular volume overload. This study evaluates the hemodynamic effects of a wire-mounted, monoleaflet, temporary valve apparatus in a mechanical cardiovascular simulator. Aortic flow, systemic pressure and left ventricular pressure were continuously monitored. An intraluminal camera obtained real-time proximal and distal images of the valve in operation. Insertion of the parachute valve in the simulator increased diastolic pressure from 7 to 38 mm Hg. Cardiac output increased from 2.08 to 4.66 L/min and regurgitant volume decreased from 65 to 23 mL. In conclusion, placement of a temporary valve in the ascending aorta may help maintain hemodynamic stability and improve off-pump aortic valve replacement.

Original languageEnglish (US)
Pages (from-to)574-577
Number of pages4
JournalASAIO Journal
Volume54
Issue number6
DOIs
StatePublished - Nov 2008
Externally publishedYes

Fingerprint

Parachutes
Catheters
Aortic Valve
Hemodynamics
Aorta
Testing
Pressure
Aortic Valve Insufficiency
Simulators
Pumps
Ventricular Pressure
Cardiac Output
Balloons
Blood Pressure
Calcium
Technology
Cameras
Incidence
Wire
In Vitro Techniques

ASJC Scopus subject areas

  • Biophysics
  • Biomaterials
  • Bioengineering
  • Biomedical Engineering
  • Medicine(all)

Cite this

Vandenberghe, S., Salizzoni, S., Bajona, P., Zehr, K. J., & Speziali, G. (2008). In vitro testing of a temporary catheter-based aortic "parachute" valve. ASAIO Journal, 54(6), 574-577. https://doi.org/10.1097/MAT.0b013e31818b3d93

In vitro testing of a temporary catheter-based aortic "parachute" valve. / Vandenberghe, Stijn; Salizzoni, Stefano; Bajona, Pietro; Zehr, Kenton J; Speziali, Giovanni.

In: ASAIO Journal, Vol. 54, No. 6, 11.2008, p. 574-577.

Research output: Contribution to journalArticle

Vandenberghe, S, Salizzoni, S, Bajona, P, Zehr, KJ & Speziali, G 2008, 'In vitro testing of a temporary catheter-based aortic "parachute" valve', ASAIO Journal, vol. 54, no. 6, pp. 574-577. https://doi.org/10.1097/MAT.0b013e31818b3d93
Vandenberghe S, Salizzoni S, Bajona P, Zehr KJ, Speziali G. In vitro testing of a temporary catheter-based aortic "parachute" valve. ASAIO Journal. 2008 Nov;54(6):574-577. https://doi.org/10.1097/MAT.0b013e31818b3d93
Vandenberghe, Stijn ; Salizzoni, Stefano ; Bajona, Pietro ; Zehr, Kenton J ; Speziali, Giovanni. / In vitro testing of a temporary catheter-based aortic "parachute" valve. In: ASAIO Journal. 2008 ; Vol. 54, No. 6. pp. 574-577.
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