title: A sensing tube with an integrated piezoelectric flow sensor for liver transplantation.
abstract: An innovative sensing tube with an integrated piezoelectric flow sensor to measure flow rate in portal vein during liver transplantation has been developed and characterized in this work. This smart tube aims to measure flow rates in the portal vein in a real-time continuous format with high reliability. The PVDF-TrFE piezoelectric flow sensor integrated in a tube was able to measure flow rates with the sensitivity of 0.02 mVpp per 20 mL/min in the range of portal vein flow rate. It also showed excellent operational stability for 120 minutes with a standard deviation of 0.084 mVpp. The tube can be used as a clinical tool for assessing the need for portal vein inflow modification during liver transplantation.
authors: Microsystems and BioMEMS Laboratory, Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, OH, USA.
authors: Wooseok
authors: W
authors: Jung
authors: Chunyan
authors: C
authors: Li
authors: Dong-Sik
authors: DS
authors: Kim
authors: Chong H
authors: CH
authors: Ahn
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation / Q000379:methods; D001783:Blood Flow Velocity / Q000502:physiology; D004574:Electromagnetic Fields; D004867:Equipment Design; D016031:Liver Transplantation / Q000295:instrumentation*; D011145:Polyvinyls / Q000737:chemistry; D011169:Portal Vein / Q000502:physiology
chemical_list: D011145:Polyvinyls; C073666:vinylidene fluoride-trifluoroethylene copolymer