Monitoring in microvascular tissue transfer by measurement of oxygen partial pressure: Four years experience with 125 microsurgical transplants

Current Evidence for Postoperative Monitoring of Microvascular Free Flaps

“…It is used in many experiments that require comparative measurements of skin blood flow. [119][120][121][122][123][124][125][126] The main advantages of this method are that it can be used to monitor buried flaps and to provide an immediate qualitative measure of the tissue blood flow. Anecdotally, it provides a warning of flap compromise up to several hours before the onset of clinical signs 127 and has a low false-positive and -negative rates.…”

Does Increased Experience with Tissue Oximetry Monitoring in Microsurgical Breast Reconstruction Lead to Decreased Flap Loss? The Learning Effect

“…17,18 Tissue oximetry for flap monitoring has been easy to use, reliable, and sensitive. 19,20 In our previous report, by Lin et al., we compared standard monitoring with our early experience on the use of tissue oximetry. 16 Although this initial experience showed great potential, it is now possible to compare outcomes based on long-term experience.…”

Preliminary results from the use of intraoperative real‐time biliary oxygen monitoring in liver transplantation

“…The devices that we used are popular in applications as tumor research, cerebral monitoring, free-flap/pedicle-flap transfer surgery, and in a variety of specialist in vitro applications including hypoxic cell culture, tissue engineering, and bioreactor monitoring. [8][9][10][11] The surface area of the tip of the fiber-optic oxygen sensors that we used is estimated to be approximately 0.25 mm 2 . In a typical tissue, this surface area may correspond to direct exposure of around 1000 cells.…”

“…However, no one has been specifically used for the real‐time testing of the proper microvascularization of the bile duct. The main aim of our study was to test “in situ” the oxygenation status in different areas of the bile duct during LT using micro‐oximeters already tested in other fields of surgery and oncology . As secondary aims, we tried to identify if ducts with impaired microvascularization could be defined with a new concept of “marginal bile ducts”; and finally, we also tried to correlate these findings with histological findings, potential variables of extended criteria donors, and the development of post‐transplant biliary complications.…”