Provided herein is an invention of a disposable adjunct developed to address limitations associated with oximetry sensor use: patient skin irritation and breakdown compromised or interrupted display of data resulting from ambient light interference costs incurred from replacing sensors with failed adhesion and use of extra sensors for acute monitoring of multiple patient sites. This adjunct may be manufactured at a fraction of the cost of traditional oximetry sensors and can be retrofit to any existing sensor. Data aberrations caused by ambient light interference are reduced, utilizing a photo-opaque layer to prevent interference from above and restoring adhesion with a hydrocolloid adhesive layer to prevent interference from below. The hydrocolloid adhesive layer provides an alternative to relatively aggressive adhesives found on the majority of oximetry sensors, thereby improving patient tolerance through reduced skin irritation. Additional intermediate layers may also be provided.
