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Τύπος: Αναρτημένη ανακοίνωση (poster)
Τίτλος: Post-dive detection of endothelial dysfunction and bubbles as markers of decompression stress in scuba divers
Συγγραφέας: [EL] Ευγενίδης, Σωτήρης[EN] Evgenidis, Sotiris
[EL] Ζαχαρίας, Κωνσταντίνος[EN] Zacharias, Konstantinos
[EL] Παπαδοπούλου, Βιργινία[EN] Papadopoulou, Virginie
[EN] Renne, N.
[EN] Theunissen, Sigrid
[EN] Balestra, Constantino
[EL] Καραπάντσιος, Θεόδωρος[EN] Karapantsios, Theodoros
Ημερομηνία: Ιου-2019
Περίληψη: Decompression stress is the stress on the body of scuba divers while ascending from large depths of water. It can cause Decompression Sickness (DCS) with symptoms varying from joint pain and rashes to paralysis and death. Stress markers of interest include post-dive detection of bubbles as well as arterial endothelial dysfunction. Ultrasound method is considered the “gold” standard for the evaluation of these markers. Although the method is simple, many problems arise in real use. These problems are mostly related to the human factor involved in ultrasound probe handling and interpretation of acquired measurements. This work investigates whether the aforementioned stress markers can be effectively assessed employing a non-invasive and easy to operate electrical impedance spectroscopy device (European Patent Office, 3005942 Α1, 2015), which reads bioelectrical signals of exceptional high sensitivity and accuracy using simple ECG-type electrodes placed at the forearm site of humans. Tests are performed in the NEMO 33 swimming pool (Brussels, Belgium, Fig. 1a), where volunteer divers are subjected to a well-defined dive profile at 33m depth for 20 minutes with water at 31oC. Five electrical signals are recorded for each diver: one pre-dive signal and four post-dive signals with an interval of 30 minutes. Electrical impedance measurements are always validated by ultrasound ones. It is demonstrated that two distinct frequency components of acquired signals can be exploited to assess decompression stress: a) LPF component (0-0.5 Hz), which is correlated to blood’s impedance value, decreases with bubbles presence and b) BPF component (0.5-10 Hz), which is correlated to heart beats, decreases due to post-dive endothelial dysfunction and progressively returns to the initial value after a couple of hours (Fig. 1b).
Γλώσσα: Αγγλικά
Τόπος δημοσίευσης: Sofia, Bulgaria
Σελίδες: 1
Θεματική κατηγορία: [EL] Άλλες Επιστήμες Μηχανικού και Τεχνολογίες[EN] Other Engineering and Technologies
Κάτοχος πνευματικών δικαιωμάτων: © by the author(s)
Όνομα εκδήλωσης: B&D 2019 — 8th Bubble & Drop conference
Τοποθεσία εκδήλωσης: Sofia, Bulgaria
Ημ/νία έναρξης εκδήλωσης: 24-Ιου-2019
Ημ/νία λήξης εκδήλωσης: 28-Ιου-2019
Σημειώσεις: Conference site: https://bd2019.eu/
This research is co-financed by Greece and the European Union (European Social Fund- ESF) through the Operational Programme «Human Resources Development, Education and Lifelong Learning» in the context of the project “Reinforcement of Postdoctoral Researchers” (MIS-5001552), implemented by the State Scholarships Foundation (ΙΚΥ)
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