Arterial Blood Gas Analysis in Breath-Hold Divers at Depth.
| dc.contributor.author | Bosco, Gerardo | |
| dc.contributor.author | Rizzato, Alex | |
| dc.contributor.author | Martani, Luca | |
| dc.contributor.author | Schiavo, Simone | |
| dc.contributor.author | Talamonti, Ennio | |
| dc.contributor.author | Garetto, Giacomo | |
| dc.contributor.author | Paganini, Matteo | |
| dc.contributor.author | Camporesi, Enrico M | |
| dc.contributor.author | Moon, Richard E | |
| dc.date.accessioned | 2019-11-28T19:09:51Z | |
| dc.date.available | 2019-11-28T19:09:51Z | |
| dc.date.issued | 2018-01 | |
| dc.date.updated | 2019-11-28T19:09:39Z | |
| dc.description.abstract | The present study aimed to evaluate the partial pressure of arterial blood gases in breath-hold divers performing a submersion at 40 m. Eight breath-hold divers were enrolled for the trials held at "Y-40 THE DEEP JOY" pool (Montegrotto Terme, Padova, Italy). Prior to submersion, an arterial cannula in the radial artery of the non-dominant limb was positioned. All divers performed a sled-assisted breath-hold dive to 40 m. Three blood samplings occurred: at 10 min prior to submersion, at 40 m depth, and within 2 min after diver's surfacing and after resuming normal ventilation. Blood samples were analyzed immediately on site. Six subjects completed the experiment, without diving-related problems. The theoretically predicted hyperoxia at the bottom was observed in 4 divers out of 6, while the other 2 experienced a reduction in the partial pressure of oxygen (paO2) at the bottom. There were no significant increases in arterial partial pressure of carbon dioxide (paCO2) at the end of descent in 4 of 6 divers, while in 2 divers paCO2 decreased. Arterial mean pH and mean bicarbonate ( HCO3- ) levels exhibited minor changes. There was a statistically significant increase in mean arterial lactate level after the exercise. Ours was the first attempt to verify real changes in blood gases at a depth of 40 m during a breath-hold descent in free-divers. We demonstrated that, at depth, relative hypoxemia can occur, presumably caused by lung compression. Also, hypercapnia exists at depth, to a lesser degree than would be expected from calculations, presumably because of pre-dive hyperventilation and carbon dioxide distribution in blood and tissues. | |
| dc.identifier.issn | 1664-042X | |
| dc.identifier.issn | 1664-042X | |
| dc.identifier.uri | ||
| dc.language | eng | |
| dc.publisher | Frontiers Media SA | |
| dc.relation.ispartof | Frontiers in physiology | |
| dc.relation.isversionof | 10.3389/fphys.2018.01558 | |
| dc.subject | arterial blood gas | |
| dc.subject | blood gas analysis | |
| dc.subject | breath-hold diving | |
| dc.subject | physiology | |
| dc.subject | underwater | |
| dc.title | Arterial Blood Gas Analysis in Breath-Hold Divers at Depth. | |
| dc.type | Journal article | |
| duke.contributor.orcid | Moon, Richard E|0000-0003-4432-0332 | |
| pubs.begin-page | 1558 | |
| pubs.issue | NOV | |
| pubs.organisational-group | School of Medicine | |
| pubs.organisational-group | Duke | |
| pubs.organisational-group | Medicine, Pulmonary, Allergy, and Critical Care Medicine | |
| pubs.organisational-group | Medicine | |
| pubs.organisational-group | Clinical Science Departments | |
| pubs.organisational-group | Anesthesiology, General, Vascular, High Risk Transplant & Critical Care | |
| pubs.organisational-group | Anesthesiology | |
| pubs.publication-status | Published | |
| pubs.volume | 9 |
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