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Strudthoff LJ, Focke J, Hesselmann F, Kaesler A, Martins Costa A, Schlanstein PC, Schmitz-Rode T, Steinseifer U, Steuer NB, Wiegmann B, Arens J, Jansen SV. Novel Size-Variable Dedicated Rodent Oxygenator for ECLS Animal Models-Introduction of the "RatOx" Oxygenator and Preliminary In Vitro Results. MICROMACHINES 2023; 14:800. [PMID: 37421033 DOI: 10.3390/mi14040800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/22/2023] [Accepted: 03/24/2023] [Indexed: 07/09/2023]
Abstract
The overall survival rate of extracorporeal life support (ECLS) remains at 60%. Research and development has been slow, in part due to the lack of sophisticated experimental models. This publication introduces a dedicated rodent oxygenator ("RatOx") and presents preliminary in vitro classification tests. The RatOx has an adaptable fiber module size for various rodent models. Gas transfer performances over the fiber module for different blood flows and fiber module sizes were tested according to DIN EN ISO 7199. At the maximum possible amount of effective fiber surface area and a blood flow of 100 mL/min, the oxygenator performance was tested to a maximum of 6.27 mL O2/min and 8.2 mL CO2/min, respectively. The priming volume for the largest fiber module is 5.4 mL, while the smallest possible configuration with a single fiber mat layer has a priming volume of 1.1 mL. The novel RatOx ECLS system has been evaluated in vitro and has demonstrated a high degree of compliance with all pre-defined functional criteria for rodent-sized animal models. We intend for the RatOx to become a standard testing platform for scientific studies on ECLS therapy and technology.
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Affiliation(s)
- Lasse J Strudthoff
- Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany
| | - Jannis Focke
- Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany
| | - Felix Hesselmann
- Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany
| | - Andreas Kaesler
- Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany
| | - Ana Martins Costa
- Department of Biomechanical Engineering, Faculty of Engineering Technologies, University of Twente, 7522 LW Enschede, The Netherlands
| | - Peter C Schlanstein
- Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany
| | - Thomas Schmitz-Rode
- Institute of Applied Medical Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany
| | - Ulrich Steinseifer
- Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany
| | - Niklas B Steuer
- Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany
| | - Bettina Wiegmann
- Department for Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, 30625 Hanover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), 30625 Hanover, Germany
- German Center for Lung Research (DLZ), 30625 Hanover, Germany
| | - Jutta Arens
- Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany
- Department of Biomechanical Engineering, Faculty of Engineering Technologies, University of Twente, 7522 LW Enschede, The Netherlands
| | - Sebastian V Jansen
- Institute of Applied Medical Engineering, Department of Cardiovascular Engineering, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany
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Kayumov M, Habimana R, Kim D, Obiweluozor FO, Jeong IS, Cho HJ. Extracorporeal circulation models in small animals: beyond the limits of preclinical research. Acute Crit Care 2023; 38:1-7. [PMID: 36935529 PMCID: PMC10030238 DOI: 10.4266/acc.2023.00381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 02/24/2023] [Indexed: 03/03/2023] Open
Abstract
Extracorporeal membrane oxygenation (ECMO) use has remarkably increased in recent years. Although ECMO has become essential for patients with refractory cardiac and respiratory failure, extracorporeal circulation (ECC) is associated with significant complications. Small-animal models of ECC have been developed and widely used to better understand ECC-induced pathophysiology. This review article summarizes the development of small-animal ECC models, including the animal species, circuit configuration, priming, perioperative procedures, cannulation, and future perspectives of small-animal ECMO models.
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Affiliation(s)
- Mukhammad Kayumov
- Department of Medical Science, Chonnam National University Graduate School, Gwangju, Korea
- Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hospital, Chonnam National University Hospital Medical School, Gwangju, Korea
- Extracorporeal Circulation Research Team, Chonnam National University Hospital, Gwangju, Korea
| | - Reverien Habimana
- Extracorporeal Circulation Research Team, Chonnam National University Hospital, Gwangju, Korea
- Department of Biomedical Sciences, Chonnam National University Graduate School, Chonnam National University Medical School, Gwangju, Korea
| | - Dowan Kim
- Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hospital, Chonnam National University Hospital Medical School, Gwangju, Korea
- Extracorporeal Circulation Research Team, Chonnam National University Hospital, Gwangju, Korea
| | - Francis O Obiweluozor
- Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hospital, Chonnam National University Hospital Medical School, Gwangju, Korea
- Extracorporeal Circulation Research Team, Chonnam National University Hospital, Gwangju, Korea
| | - In Seok Jeong
- Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hospital, Chonnam National University Hospital Medical School, Gwangju, Korea
- Extracorporeal Circulation Research Team, Chonnam National University Hospital, Gwangju, Korea
| | - Hwa Jin Cho
- Extracorporeal Circulation Research Team, Chonnam National University Hospital, Gwangju, Korea
- Department of Pediatrics, Chonnam National University Children's Hospital and Chonnam National University Medical School, Gwangju, Korea
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Burn F, Ciocan S, Mendez Carmona N, Berner M, Sourdon J, Carrel TP, Tevaearai Stahel HT, Longnus SL. Oxygen-transfer performance of a newly designed, very low-volume membrane oxygenator. Interact Cardiovasc Thorac Surg 2015; 21:352-8. [DOI: 10.1093/icvts/ivv141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 04/24/2015] [Indexed: 11/13/2022] Open
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