{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,8,7]],"date-time":"2024-08-07T04:52:29Z","timestamp":1723006349590},"reference-count":0,"publisher":"Undersea and Hyperbaric Medical Society (UHMS)","issue":"01","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["UHM"],"published-print":{"date-parts":[[2021,3,1]]},"abstract":"<jats:p>Introduction: Safe administration of critical care hyperbaric medicine requires specialized equipment and advanced training. Equipment must be tested in order to evaluate function in the hyperbaric environment. High-frequency percussive ventilation (HFPV) has been used in intensive care settings effectively, but it has never been tested in a hyperbaric chamber.  \tMethods: Following a modified U.S. Navy testing protocol used to evaluate hyperbaric ventilators, we evaluated an HFPV transport ventilator in a multiplace hyperbaric chamber at 1.0, 1.9, and 2.8 atmospheres absolute (ATA). We used a test lung with analytical software for data collection. The ventilator uses simultaneous cyclic pressure-controlled ventilation at a pulsatile flow rate (PFR)\/oscillatory continuous positive airway pressure (oCPAP) ratio of 30\/10 with a high-frequency oscillation percussive rate of 500 beats per minute. Inspiratory and expiratory times were maintained at two seconds throughout each breathing cycle.  \tResults: During manned studies, the PFR\/oCPAP ratios were 26\/6, 22\/7, and 22.5\/8 at an airway resistance of 20cm H2O\/L\/second and 18\/9, 15.2\/8.5, and 13.6\/7 at an airway resistance of 50 cm\/H2O\/L\/second at 1, 1.9, and 2.8 ATA. The resulting release volumes were 800, 547, and 513 mL at airway resistance of 20 cm H2O\/L\/sec and 400, 253, and 180 mL at airway resistance of 50 cm\/H2O\/L\/sec at 1, 1.9, and 2.8 ATA.   \tUnmanned testing showed similar changes. The mean airway pressure (MAP) remained stable throughout all test conditions; theoretically, supporting adequate lung recruitment and gas exchange. A case where HFPV was used to treat a patient for CO poisoning was presented to illustrate that HFPV worked well under HBO2 conditions and no complications occurred during HBO2 treatment.  \tConclusion: The HFPV transport ventilator performed adequately under hyperbaric conditions and should be considered a viable option for hyperbaric critical care. This ventilator has atypical terminology and produces unique pulmonary physiology, thus requiring specialized training prior to use.<\/jats:p>","DOI":"10.22462\/03.04.2021.6","type":"journal-article","created":{"date-parts":[[2021,6,9]],"date-time":"2021-06-09T19:02:59Z","timestamp":1623265379000},"page":"157-168","source":"Crossref","is-referenced-by-count":0,"title":["Performance characteristics of high-frequency percussive ventilation under hyperbaric conditions"],"prefix":"10.22462","volume":"03","author":[{"name":"Department of Family Medicine, Philadelphia College of Osteopathic Medicine, Philadelphia, PA U.S.","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kristi L.","family":"Ray","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert J.","family":"Apsey","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Department of Respiratory Therapy, Legacy Emanuel Medical Center, Portland, Oregon U.S.","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jeff L.","family":"Heltborg","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Department of Respiratory Therapy, Legacy Emanuel Medical Center, Portland, Oregon U.S.","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chae L.","family":"Bliss","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Hyperbaric Medicine and Chronic Wound Clinic, Legacy Emanuel Medical Center, Portland, Oregon U.S.","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Enoch T.","family":"Huang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Hyperbaric Medicine and Chronic Wound Clinic, Legacy Emanuel Medical Center, Portland, Oregon U.S.","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"9754","published-online":{"date-parts":[[2021,3,1]]},"container-title":["Undersea and Hyperbaric Medicine"],"original-title":[],"deposited":{"date-parts":[[2021,6,9]],"date-time":"2021-06-09T19:03:02Z","timestamp":1623265382000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.uhms.org\/uhm-search\/uhm-journal-volume-48-2021\/number-2\/performance-characteristics-of-high-frequency-percussive-ventilation-under-hyperbaric-conditions.html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,3,1]]},"references-count":0,"journal-issue":{"issue":"01","published-online":{"date-parts":[[2021,3,1]]},"published-print":{"date-parts":[[2021,3,1]]}},"URL":"https:\/\/doi.org\/10.22462\/03.04.2021.6","relation":{},"ISSN":["1066-2936"],"issn-type":[{"type":"print","value":"1066-2936"}],"subject":[],"published":{"date-parts":[[2021,3,1]]}}}