In Vitro and In Vivo Feasibility Study for a Portable VV-ECMO and ECCO 2 R System.
Lasse Johannes StrudthoffHannah LükenSebastian V JansenJan PetranPeter C SchlansteinLotte SchravenBenjamin J SchürmannNiklas B SteuerGeorg WagnerThomas Schmitz-RodeUlrich SteinseiferJutta ArensRüdger KoppPublished in: Membranes (2022)
Extracorporeal membrane oxygenation (ECMO) is an established rescue therapy for patients with chronic respiratory failure waiting for lung transplantation (LTx). The therapy inherent immobilization may result in fatigue, consecutive deteriorated prognosis, and even lost eligibility for transplantation. We conducted a feasibility study on a novel system designed for the deployment of a portable ECMO device, enabling the physical exercise of awake patients prior to LTx. The system comprises a novel oxygenator with a directly connected blood pump, a double-lumen cannula, gas blender and supply, as well as control and energy management. In vitro experiments included tests regarding performance, efficiency, and blood damage. A reduced system was tested in vivo for feasibility using a novel large animal model. Six anesthetized pigs were first positioned in supine position, followed by a 45° angle, simulating an upright position of the patients. We monitored performance and vital parameters. All in vitro experiments showed good performance for the respective subsystems and the integrated system. The acute in vivo trials of 8 h duration confirmed the results. The novel portable ECMO-system enables adequate oxygenation and decarboxylation sufficient for, e.g., the physical exercise of designated LTx-recipients. These results are promising and suggest further preclinical studies on safety and efficacy to facilitate translation into clinical application.
Keyphrases
- extracorporeal membrane oxygenation
- respiratory failure
- acute respiratory distress syndrome
- end stage renal disease
- chronic kidney disease
- mechanical ventilation
- ejection fraction
- newly diagnosed
- peritoneal dialysis
- oxidative stress
- high resolution
- depressive symptoms
- obstructive sleep apnea
- bone marrow
- stem cells
- patient reported outcomes
- mesenchymal stem cells
- physical activity
- cell therapy
- ultrasound guided
- deep brain stimulation