https://www.selleckchem.com/products/b102-parp-hdac-in-1.html RESULTS Ninety-six man-dives were completed, resulting in no cases of DCS. The median (IQR) peak VGE grades were 3 (2-3) at rest and 3 (3-3) with limb flexion. VGE grades remained elevated two hours post-dive with median grades 1 (1-3) at rest and 3 (1-3) with movement. CONCLUSIONS Testing of a short, deep air decompression schedule computed with the VVal-79 Thalmann algorithm, tested under diving conditions similar to earlier US Navy dive trials, resulted in a low incidence of DCS. Copyright This article is the copyright of the authors who grant Diving and Hyperbaric Medicine a non-exclusive licence to publish the article in electronic and other forms.INTRODUCTION Divers with suspected decompression illness require high concentration oxygen (O₂). There are many different O₂ delivery devices, with few data comparing their performance. This study evaluated O₂ delivery, using tissue O₂ partial pressure (PtcO₂), in healthy divers breathing O₂ via three different delivery devices. METHODS Twelve divers had PtcO₂ measured at six limb sites. Participants breathed O₂ from a demand valve using an intraoral mask with a nose clip (NC); a medical O₂ rebreathing system (MORS) with an oronasal mask and with an intraoral mask; and a non-rebreather mask (NRB) at 15 or 10 L·min⁻¹ O₂ flow. In-line inspired O₂ FIO₂) and nasopharyngeal FIO₂ were measured. Participants provided subjective ratings of device comfort, ease of breathing, and overall ease of use. RESULTS PtcO₂ values and nasopharyngeal FIO₂ were similar with the demand valve with intraoral mask, MORS with both masks and the NRB at 15 L·min⁻¹. PtcO₂ and nasopharyngeal FIO₂ values were significantly lower with the NRB at 10 L·min⁻¹. The NRB was rated as the most comfortable to wear, easiest to breathe with, and overall the easiest to use. CONCLUSION Of the commonly available devices promoted for O₂ delivery to injured divers, similar PtcO₂ and nasopharyngeal FIO₂ v