Tissue Perfusion using iPUPc

Transcutaneous tissue perfusion was used as a measure of tissue viability in our study.

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Sitting protocols: Alternate using iPUPc; Normal+ Pushup: Subject sit in Normal posture doing arm push-up every 20 minutes

Average tissue perfusion level:Average tcPO2 and tcPCO2 for each protocol were determined.

                                                                                  

Publications

Local Tissue Perfusion Recovery Using an Automated Seating System Featuring Dynamic Ischial Unloading

Alternating Ischial Support as a Method of Preventing the Instance of Pressure Ulcers  

Tissue Perfusion Primary Change Times:

Interface Pressure rises and releases when the subject changed his/her posture. For example, at IT, pressure release occurred when the sitting posture changed from Normal to WO-BPS and when the subject started to do a Pushup. The primary changing period (PCP), defined as the time the tissue perfusion parameters take to complete 90% of the maximum change, was determined for both tcPO₂ and tcPCO₂ during the interface pressure rise and release. E.g. during pressure rise, PCP for tcPO₂ was the time it drops to10% of its initial high level, while for tcPCO₂, it will be the time it reached 90% of its final high level: Average tcPO₂ and tcPCO₂ for each protocol were determined.