Relative hypoxemia at depth during breath-hold diving investigated through arterial blood gas analysis and lung ultrasound
Abstract
During breath-hold diving, arterial partial pressure of oxygen ([Formula: see text]) and arterial partial pressure of carbon dioxide ([Formula: see text]) are believed to increase progressively during descent, as explained by theory, previous end-tidal alveolar gas measurements, and arterial blood gas analysis in hyperbaric chambers. Recent experiments in real underwater environment found a paradoxical [Formula: see text] drop at depth in some divers. This work confirms that some breath-hold divers can experience hypoxemia at depth. The hypothesized explanation for such a discrepancy is lung atelectasis, as suggested by lung ultrasound findings.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 01, 2023
- Source ID
- 10.1152/japplphysiol.00777.2022
Entities
People
- Danilo Cialoni
- Ennio Talamonti
- Enrico M. Camporesi
- Gerardo Bosco
- Giacomo Garetto
- Lorenzo Zucchi
- Luca Martani
- Matteo Paganini
- Richard E Moon
- Tommaso Antonio Giacon
Organizations
- Divers Alert Network
- Duke University
- Office of Naval Research
- Tampa General Hospital
- University of Padua