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Some of you may recall a request we made back in 2014 for assistance with a research project involving Gulf of Mexico diving operations. A number of diver medics subsequently helped with a Doppler Monitoring Study. The organization involved has continued to study Doppler detection of venous gas as a surrogate for decompression stress, in both real-time operations and with stored datasets. A recent publication addressed the latter. Interestingly, it found that subclavian site bubble detection correlated more favorably with DCS incidence than the more traditional precordial approach. (See link below)
I have invited this organization to make a presentation at the February 2020 DMT Refresher Training Course. They are keen to continue to get access commercial diving operations and hopeful of contacts with those in attendance and elsewhere at Underwater Intervention. Among other things, they have created a self-measurement Doppler Monitoring System. The diver assesses subclavian vein blood flow, with the recording stored on a smartphone and transmitted to the organization’s server once the phone connects to Wi-Fi or a cellular network. Within minutes, the diver receives a graph assessing how optimal their decompression was.
Dick Clarke, President
National Board of Diving & Hyperbaric Medical Technology
https://www.dhmjournal.com/images/ImmediateRelease/Hugon_Subclavian-VGE-scores.pdf