Abstract: A patient interface for a reusable optical sensor, the patient interface including a compliant element defining a pocket having a lower wall defining an opening therethrough, the pocket being configured to removably receive the reusable optical sensor. The compliant element includes a first wing and a second wing configured for conformal placement on a patient's body. A condition of a patient may be monitored by inserting an optical sensor into a patient interface, applying the patient interface to the patient, obtaining a measurement with the optical sensor related to the condition of the patient, removing the patient interface from the patient, and removing the sensor from the patient interface.

Abstract: Methods are disclosed for determining a value associated with an analyte in a sample. The methods include: determining a set of spectra from a model for light attenuation in the sample, where the model includes contributions from at least two different sources of light attenuation in the sample; determining a set of spectral correction factors associated with the analyte in the sample based on the set of spectra; and using the set of spectral correction factors to determine the value associated with the analyte of interest.