Hyperbaric oxygen (HBO) therapy is a therapeutic treatment used to aid healing in a variety of clinical diagnoses (including diabetic foot ulcers, carbon monoxide poisoning, decompression sickness). During treatment, the patient is placed inside a hyperbaric chamber for a specific amount of time (often around 90 minutes) and at a pressure well above sea level (commonly up to 2.4 ATA). The patient is also usually either in a 100% oxygen environment or breathing 100% oxygen.
There are two types of HBO chambers; monoplace and multiplace. Monoplace chambers consist of a horizontal acrylic tube where a single reclined (or supine) patient enters the chamber on a special gurney that is rolled into the chamber. Multiplace chambers are much larger and contain space for many seated patients to simultaneously receive treatment. As monoplace chambers are much smaller than multiplace chambers, they are filled with 100% oxygen during pressurization. This practice would be inefficient in a multiplace chamber, so patients are instead fed 100% oxygen through a mask or hood.
The only way to monitor tissue oxygenation (and hence patient status) during HBO treatment is through the use of transcutaneous oximetry (tcpO2) , which is especially useful when treating non-healing wounds. This can be done in both monoplace chambers (with pass-throughs and electrode extension cables) and multiplace chambers (with remote panels). In both cases, the PeriFlux 6000 sits outside the chamber and the electrodes measure on one or more patient sites inside the chamber. This technique provides insight into how the treatment is progressing and can also indicate whether or not HBO therapy is likely to succeed3Smart DR, Bennett MH, Mitchell SJ. Transcutaneous oximetry, problem wounds and hyperbaric oxygen therapy. Diving and Hyperbaric Medicine. 2006; 36: 72-86.. This helpful technology is available in several different versions of the PeriFlux 6000.
Smart DR, Bennett MH, Mitchell SJ. Transcutaneous oximetry, problem wounds and hyperbaric oxygen therapy. Diving and Hyperbaric Medicine. 2006; 36: 72-86.
Remote Panels Inside the Chamber
To facilitate measurements inside a hyperbaric oxygen therapy (HBOT) chamber, a remote panel system is available. The remote panel system consists of the required cables, chamber penetrators and remote panels for placement inside the chamber.
The instrument (PF6000 tcpO2) is then positioned outside the chamber, with electrodes either directly to the instrument (for measurements outside the chamber) or through the remote panel system inside the chamber (for measurements inside the chamber).
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