Technical Articles From Universitat de Barcelona

Non‑Invasive Monitoring Of Ph And Oxygen Using Miniaturized Electrochemical Sensors In An Animal Model Of Acute Hypoxia

Jan 19, 2022 | Laura Pla, Sergio Berdún, Mònica Mir, Lourders Rivas, Sandrine Miserere, Samuel Dulay, Josep Samitier, Elisenda Eixarch, Miriam Illa, and Eduard Gratacós

pH and oxygen electrochemical sensors were evaluated in a ventilatory hypoxia rabbit model. The ventilator hypoxia protocol included 3 differential phases: basal (100% FiO2), the hypoxia-acidosis period (10% FiO2) and recovery (100% FiO2). Sensors were tested in blood tissue (ex vivo sensing) and in muscular tissue (in vivo sensing). pH electrochemical and oxygen sensors were evaluated on the day of insertion (short-term evaluation) and pH electrochemical sensors were also tested after 5 days of insertion (long-term evaluation). pH and oxygen sensing were registered throughout the ventilatory hypoxia protocol (basal, hypoxia-acidosis, and recovery) and were compared with blood gas metabolites results from carotid artery catheterization (obtained with the EPOC blood analyzer)....