Efficacy of a New Intraaortic Propeller Pump vs the Intraaortic Balloon Pumpa
| Autor: | Jos G. Maessen, Andreé Dekker, Erik van der Veen, Gijs Geskes, Koen D. Reesink, Vincent van Ommen, Cecile Soemers |
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| Rok vydání: | 2003 |
| Předmět: |
Pulmonary and Respiratory Medicine
Mitral regurgitation medicine.medical_specialty Aorta Cardiac output business.industry Intra-Aortic Balloon Pumping Critical Care and Intensive Care Medicine Coronary circulation medicine.anatomical_structure Afterload Internal medicine Mitral valve medicine.artery cardiovascular system Aortic pressure Cardiology Medicine Cardiology and Cardiovascular Medicine business |
| Zdroj: | Chest. 123:2089-2095 |
| ISSN: | 0012-3692 |
| DOI: | 10.1378/chest.123.6.2089 |
| Popis: | Objective To compare the efficacy of a new intraaortic propeller pump (PP) to provide hemodynamic support to the intraaortic balloon pump (IABP) in an acute mitral regurgitation (MR) animal model. Background A new intraaortic PP (Reitan catheter pump; Jomed; Helsingborg, Sweden) recently has been introduced. The pump’s aim is a reduction in afterload via a deployable propeller that is placed in the high descending aorta and can be set at rotational speeds of ≤ 14,000 revolutions per minute (rpm). Methods In nine calves, acute MR was created by placing a vena cava filter in the mitral valve. The PP was tested at 6,000, 10,000, and 14,000 rpm and was compared to 1:1 IABP support. Cardiac output, coronary blood flow, carotid artery flow, ascending and abdominal aortic pressure, left atrial pressure, and LV pressure-volume loops were recorded. Results The PP caused an rpm-dependent reduction in the mean ascending aortic pressure reaching −10 mm Hg (p Conclusions In this acute MR animal model, the PP reduced afterload but left out positive effects on cardiac output, which resulted in reduced perfusion of the upper body and the coronary circulation. Therefore, the IABP gives better hemodynamic support than the new PP in calves with acute MR. |
| Databáze: | OpenAIRE |
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