In Vitro Hemocompatibility Evaluation of Modified Rotary Left to Right Ventricular Assist Devices in Pulmonary Flow Conditions

ASAIO Journal ◽  
2019 ◽  
Vol 66 (6) ◽  
pp. 637-644
Author(s):  
Chris Hoi Houng Chan ◽  
Deepika Nandakumar ◽  
Nicoletta Balletti ◽  
Jarod Horobin ◽  
Eric Lee-Jan Wu ◽  
...  
Keyword(s):  
Right Ventricular ◽  
Ventricular Assist Devices ◽  
Flow Conditions ◽  
Ventricular Assist ◽  
Assist Devices ◽  
Pulmonary Flow

In Vitro Hemocompatibility Evaluation of Ventricular Assist Devices in Pediatric Flow Conditions: A Benchmark Study

2018 ◽  
Vol 42 (11) ◽  
pp. 1028-1034 ◽  
Author(s):  
Chris Hoi Houng Chan ◽  
Sara Diab ◽  
Kayla Moody ◽  
O Howard Frazier ◽  
Luiz C. Sampaio ◽  
...  
Keyword(s):  
Ventricular Assist Devices ◽  
Flow Conditions ◽  
Ventricular Assist ◽  
Assist Devices ◽  
Benchmark Study

scholarly journals Impact of Centrifugal-Flow Ventricular Assist Devices on Right Ventricular Pacing Function

2019 ◽  
Vol 25 (8) ◽  
pp. S82-S83
Author(s):  
Daniel R. Musikantow ◽  
Marc Miller ◽  
Anelechi Anyanwu ◽  
Aishe Cuca ◽  
Noah Moss
Keyword(s):  
Right Ventricular ◽  
Ventricular Assist Devices ◽  
Ventricular Pacing ◽  
Ventricular Assist ◽  
Right Ventricular Pacing ◽  
Assist Devices

scholarly journals Response of a physiological controller for ventricular assist devices during acute patho-physiological events: an in vitro study

2017 ◽  
Vol 62 (6) ◽  
pp. 623-633 ◽  
Author(s):  
Anastasios Petrou ◽  
Panagiotis Pergantis ◽  
Gregor Ochsner ◽  
Raffael Amacher ◽  
Thomas Krabatsch ◽  
...  
Keyword(s):  
Valsalva Maneuver ◽  
Constant Speed ◽  
Ventricular Assist Devices ◽  
Moving Window ◽  
Clinical Implementation ◽  
Premature Ventricular Contractions ◽  
Ventricular Assist ◽  
Assist Devices ◽  
Mock Circulation

AbstractThe current paper analyzes the performance of a physiological controller for turbodynamic ventricular assist devices (tVADs) during acute patho-physiological events. The numerical model of the human blood circulation implemented on our hybrid mock circulation was extended in order to simulate the Valsalva maneuver (VM) and premature ventricular contractions (PVCs). The performance of an end-diastolic volume (EDV)-based physiological controller for VADs, named preload responsive speed (PRS) controller was evaluated under VM and PVCs. A slow and a fast response of the PRS controller were implemented by using a 3 s moving window, and a beat-to-beat method, respectively, to extract the EDV index. The hemodynamics of a pathological circulation, assisted by a tVAD controlled by the PRS controller were analyzed and compared with a constant speed support case. The results show that the PRS controller prevented suction during the VM with both methods, while with constant speed, this was not the case. On the other hand, the pump flow reduction with the PRS controller led to low aortic pressure, while it remained physiological with the constant speed control. Pump backflow was increased when the moving window was used but it avoided sudden undesirable speed changes, which occurred during PVCs with the beat-to-beat method. In a possible clinical implementation of any physiological controller, the desired performance during frequent clinical acute scenarios should be considered.

Right Ventricular Assist Devices After Heart Transplantation

2020 ◽  
Vol 52 (2) ◽  
pp. 575-576 ◽  
Author(s):  
Sara Escalona-Rodriguez ◽  
Nora Palomo-López ◽  
Ana Escoresca-Ortega ◽  
Alejandro Adsuar-Gómez ◽  
Manuel Porras-López ◽  
...  
Keyword(s):  
Heart Transplantation ◽  
Right Ventricular ◽  
Ventricular Assist Devices ◽  
Ventricular Assist ◽  
Assist Devices
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