in this application blood pressure will be measured using the fbg sensor across a partial or complete blockage in an artery or vein the fbg data will provide a measure of the degree to which blood flow is impeded because of the blockage in the event that corrective procedures are used to clear the blockage this method will also allow one to measure the degree to which the blockage has been corrected specifically the pressure results from pre and post operative measurements will be compared inter cranial pressure measurement and monitoring in this application fluid pressure in the inter cranial region between the brain and skull will be measured and monitored over time when the inter cranial pressure approaches or exceeds the blood pressure blood will not diffuse into the brain and therefore the brain can become oxygen starved elevated inter cranial pressure is commonly caused by brain swelling in response to trauma therefore the inter cranial pressure measurements will quantify the degree of swelling inter compartmental muscle pressure measurement and monitoring in this method pressure will be measured and monitored by inserting the sensor through the fascia of the muscle when the compartmental pressure magnitude approaches or exceeds the blood pressure magnitude blood diffusion into the muscle can be prevented the foregoing is a description of.