Patent ID: 9198586
Filing Date: 2015-12-01
Classification: A61B,A61M

Abstract:
1. A method of optimizing oxygenation in a patient comprising: (a) securing a photoplethysmography (PPG) sensor and a positive end expiratory pressure (PEEP) apparatus to a central source site of the patient, (b) applying PEEP to the patient at a first level; (c) evaluating with a computer (1) a blood oxygen saturation; and (2) changes in a magnitude of an envelope of a PPG signal and/or an amplitude of a PPG signal, to determine whether the level of PEEP is appropriate; and (d) if the level of PEEP is not appropriate, (1) increasing or decreasing the level of PEEP to a second level, (2) increasing fluid volume in the patient, (3) providing drug treatment to the patient, or (4) a combination thereof.