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Kaffka genaamd Dengler SE, Mishra M, van Tuijl S, de Jager SCA, Sluijter JPG, Doevendans PA, van der Kaaij NP. Validation of the slaughterhouse porcine heart model for ex-situ heart perfusion studies. Perfusion 2024; 39:555-563. [PMID: 36638055 PMCID: PMC10943619 DOI: 10.1177/02676591231152718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
INTRODUCTION To validate slaughterhouse hearts for ex-situ heart perfusion studies, we compared cold oxygenated machine perfusion in less expensive porcine slaughterhouse hearts (N = 7) to porcine hearts that are harvested following the golden standard in laboratory animals (N = 6). METHODS All hearts received modified St Thomas 2 crystalloid cardioplegia prior to 4 hours of cold oxygenated machine perfusion. Hearts were perfused with homemade modified Steen heart solution with a perfusion pressure of 20-25 mmHg to achieve a coronary flow between 100-200 mL/min. Reperfusion and testing was performed for 4 hours on a normothermic, oxygenated diluted whole blood loaded heart model. Survival was defined by a cardiac output above 3 L with a mean aortic pressure above 60 mmHg. RESULTS Both groups showed 100% functional survival, with laboratory hearts displaying superior cardiac function. Both groups showed similar decline in function over time. CONCLUSION We conclude that the slaughterhouse heart can be used as an alternative to laboratory hearts and provides a cost-effective method for future ex-situ heart perfusion studies.
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Affiliation(s)
| | - Mudit Mishra
- Department of Cardiothoracic Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
- Laboratory of Experimental Cardiology, Department of Cardiology, University Medical Center Utrecht, University Utrecht, Utrecht, The Netherlands
| | | | - Saskia CA de Jager
- Laboratory of Experimental Cardiology, Department of Cardiology, University Medical Center Utrecht, University Utrecht, Utrecht, The Netherlands
| | - Joost PG Sluijter
- Laboratory of Experimental Cardiology, Department of Cardiology, University Medical Center Utrecht, University Utrecht, Utrecht, The Netherlands
| | - Pieter A Doevendans
- Department of Cardiology, University Medical Center Utrecht, University Utrecht, Utrecht, The Netherlands
- Netherlands Heart Institute, Moreelsepark 1, The Netherlands
| | - Niels P van der Kaaij
- Department of Cardiothoracic Surgery, University Medical Center Utrecht, Utrecht, The Netherlands
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Kaffka Genaamd Dengler SE, Mishra M, Vervoorn MT, Kernkamp J, van Tuijl S, de Jager SCA, Sluijter JPG, Doevendans PA, van der Kaaij NP. Hemofiltration Improves Blood Perfusate Conditions Leading to Improved Ex Situ Heart Perfusion. ASAIO J 2024; 70:38-43. [PMID: 37816093 DOI: 10.1097/mat.0000000000002058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023] Open
Abstract
The aim was to optimize the perfusate composition by including a hemofiltrator to the PhysioHeartplatform for ex situ heart perfusion of porcine slaughterhouse hearts. Fourteen hearts were harvested from Dutch Landrace pigs and slaughtered for human consumption. All hearts were preserved for 4 hours using static cold storage before reperfusion for 4 hours on the PhysioHeart platform. Seven hearts were assigned to the hemofiltration group, where a hemofiltrator was added to the perfusion circuit, while the control group did not receive hemofiltration. In the hemofiltration group, the perfusion fluid was filtrated for 1 hour with a flow of 1 L/hour before reperfusion. After mounting the heart, hemofiltration was maintained at 1 L/hour, and cardiac function and blood samples were analyzed at multiple time points. Preserved cardiac function was defined as a cardiac output >3.0 L/min with a mean aortic pressure >60 mm Hg and a left atrial pressure <15 mm Hg. Hemofiltration resulted in a significantly reduced potassium concentration at all time points ( p < 0.001), while sodium levels remained at baseline values ( p < 0.004). Furthermore, creatinine and ammonia levels decreased over time. Functional assessment demonstrated a reduced left atrial pressure ( p < 0.04) and a reduction of the required dobutamine dose to support myocardial function ( p < 0.003) in the hemofiltration group. Preserved cardiac function did not differ between groups. Hemofiltration results in an improved biochemical composition of the whole blood perfusate and preserves cardiac function better during normothermic perfusion based on a reduced left atrial pressure (LAP) and dobutamine requirement to support function.
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Affiliation(s)
| | - Mudit Mishra
- From the Department of Cardiothoracic Surgery, University Medical Center Utrecht, Utrecht, the Netherlands
- Laboratory of Experimental Cardiology, Department of Cardiology, University Medical Center Utrecht, Regenerative Medicine Center Utrecht, Circulatory Health Research Center, University Utrecht, Utrecht, the Netherlands
| | - Mats T Vervoorn
- From the Department of Cardiothoracic Surgery, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Jord Kernkamp
- From the Department of Cardiothoracic Surgery, University Medical Center Utrecht, Utrecht, the Netherlands
| | | | - Saskia C A de Jager
- Laboratory of Experimental Cardiology, Department of Cardiology, University Medical Center Utrecht, Regenerative Medicine Center Utrecht, Circulatory Health Research Center, University Utrecht, Utrecht, the Netherlands
| | - Joost P G Sluijter
- Laboratory of Experimental Cardiology, Department of Cardiology, University Medical Center Utrecht, Regenerative Medicine Center Utrecht, Circulatory Health Research Center, University Utrecht, Utrecht, the Netherlands
| | - Pieter A Doevendans
- Department of Cardiology, University Medical Center Utrecht, University Utrecht, Utrecht, the Netherlands
- Netherlands Heart Institute, Utrecht, the Netherlands
| | - Niels P van der Kaaij
- From the Department of Cardiothoracic Surgery, University Medical Center Utrecht, Utrecht, the Netherlands
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