Bioimpedance and Electrical Impedance Tomography for Mammals in Water
Abstract
The main objectives with the proposed studies are to develop a new method to study lung function and mechanics in breath-hold diving dolphins or humans, or in humans breathing air while diving, i.e. SCUBA. We aim to develop Bio Impedance (BioZ) and adapt an Electrical Impedance Tomography (EIT) device as to allow Physio-logging in breath-hold and SCUBA divers (both animal and human). This non-invasive method allows measuring of regional gas filling, and blood distribution within the lungs (regional ventilation and perfusion) to study regional gas distribution. The method also allows measurement of heart rate, pulmonary perfusion, breathing frequency and impedance changes, which provides a proxy for tidal volume. With this device, our aim is to assess physiologic adaptations of thegas distribution and the associated changes of lung perfusion that influence gas exchange in human (scuba/breath-hold), seal, sea lion and dolphins and evaluate the consequences of the adaptations within thelung of diving subjects on gas exchange.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 12, 2023
- Source ID
- N000142312002
Entities
People
- Andreas Fahlman
Organizations
- Office of Naval Research
- United States Navy