An exemplary sensor includes a sensor pad defining a perimeter, a light source, a light detector, and an adhesive layer. The light source is configured to generate near-infrared light and transmit the near-infrared light through part of a patients body. The light detector is configured to receive the near-infrared light generated by the light source after it has traveled through part of the patients body. The light received by the light detector indicates an amount of oxygen in the part of the patients body through which the near-infrared light traveled. The adhesive layer is offset relative to the sensor pad to, for example, allow a clinician to easily remove the sensor from the patient.
