Full-face snorkel masks increase the incidence of hypoxaemia and hypercapnia during simulated snorkelling compared to conventional snorkels
CONCLUSIONS: Use of FFSMs may result in rebreathing due to non-unidirectional flow, leading to hypercapnia and hypoxaemia.PMID:38091590 | PMC:PMC10735670 | DOI:10.28920/dhm53.4.313-320 (Source: Diving and Hyperbaric Medicine)
Source: Diving and Hyperbaric Medicine - December 13, 2023 Category: Sports Medicine Authors: Janneke Grundemann Xavier Ce Vrijdag Nicole Ye Wong Nicholas Gant Simon J Mitchell Hanna van Waart Source Type: research
Measuring whole body inert gas wash-out
CONCLUSIONS: We present a portable device with acceptable precision and accuracy to measure inert gas wash-out differences that may be physiologically relevant in the pathophysiology of decompression sickness.PMID:38091591 | DOI:10.28920/dhm53.4.321-326 (Source: Diving and Hyperbaric Medicine)
Source: Diving and Hyperbaric Medicine - December 13, 2023 Category: Sports Medicine Authors: Oscar Plogmark M årten Silvanius Max Olsson Carl Hjelte Magnus Ekstr öm Oskar Fr ånberg Source Type: research
Comparing the EMMA capnograph with sidestream capnography and arterial carbon dioxide pressure at 284 kPa
CONCLUSIONS: In this study, the EMMA capnograph performed equally to the sidestream capnograph when compared directly, and both capnography measures gave clinically acceptable estimates of arterial PCO2.PMID:38091592 | PMC:PMC10735710 | DOI:10.28920/dhm53.4.327-332 (Source: Diving and Hyperbaric Medicine)
Source: Diving and Hyperbaric Medicine - December 13, 2023 Category: Sports Medicine Authors: Xavier Ce Vrijdag Hanna van Waart Chris Sames Jamie W Sleigh Simon J Mitchell Source Type: research
Within-diver variability in venous gas emboli (VGE) following repeated dives
CONCLUSIONS: These data demonstrate large within-diver variability in VGE grades following repeated dives on the same dive profile and suggest there is substantial within-diver variability in susceptibility to DCS. Post-dive VGE grades are not useful for evaluating decompression practice for individual divers.PMID:38091593 | DOI:10.28920/dhm53.4.333-339 (Source: Diving and Hyperbaric Medicine)
Source: Diving and Hyperbaric Medicine - December 13, 2023 Category: Sports Medicine Authors: David J Doolette F Gregory Murphy Source Type: research
Pulmonary oxygen toxicity breath markers after heliox diving to 81 metres
This study examined VOCs after exposures to 81 metres of seawater by three navy divers during operational heliox diving. Univariate testing did not yield significant results. However, targeted multivariate analysis of POT-associated VOCs identified significant (P = 0.004) changes of dodecane, tetradecane, octane, methylcyclohexane, and butyl acetate during the 4 h post-dive sampling period. No airway symptoms or discomfort were reported. This study demonstrates that breath sampling can be performed in the field, and VOCs indicative of oxygen toxicity are exhaled without clinical symptoms of POT, strengthening the belief th...
Source: Diving and Hyperbaric Medicine - December 13, 2023 Category: Sports Medicine Authors: Feiko Jm de Jong Paul Brinkman Thijs T Wingelaar Pieter-Jan Am van Ooij Robert A van Hulst Source Type: research
