Title original: Stellenwert der hyperbaren Sauerstofftherapie für die Behandlung chronischer Wunden The physical and biological effects of hyperbaric oxygen therapy (HBOT) are used to treat various medical conditions, such as decompression sickness after diving accidents or in cases of gas embolism or CO-poisoning.

Introduction Scientific diving is often done as weeks-long expedition diving. CCR diving allows for longer and deeper dives without disturbing marine life. However, this intensive diving work puts human physiology under stress. There is little evidence regarding how humans adapt to diving stress over an extended period and whether there is an accumulation of decompression stress. The aim of this study was to observe and analyze the effects of a 31-day period of repeated deep and long CCR dives on cardiopulmonary physiology.

Introduction Consecutive CCR diving frequently exposes the human body to both hyperbaric and hyperoxic environments. The NOAA guidelines have been developed as safety limits for oxygen exposure. However, there have been reports of lung abnormalities and myopic shifts in the literature. The aim of this study was to analyze the effects of a 31-day period of repeated deep and long CCR dives on divers’ lung function and visual acuity.

Introduction As we have been studying oxygen for 250 years [1], we may think that we know it all. Admittedly, we have learned a considerable amount since the first use of the term “phlogiston”, a word coined by Jonass Johann Joachim Becher in the 17th century to refer to what we now call oxygen. Phlogiston is the neutral form of “phlogistos”, meaning “inflammable”. The word comes from “phlogizein”, meaning “put on fire, burning”, and from “phlox” (in the genitive form “phlogos”), meaning “flame”; it was the hypothetical theory of fire and was a constituent of all combustible material.

Background: Recreational diving creates risk for decompression sickness (DCS), which can occur in SCUBA diving even if current decompression algorithms are respected. The aim of this study was to identify the primary risk factors for decompression sickness in real-world regular recreational diving.