{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,2]],"date-time":"2026-01-02T07:40:07Z","timestamp":1767339607497,"version":"3.40.5"},"reference-count":49,"publisher":"Public Library of Science (PLoS)","issue":"4","license":[{"start":{"date-parts":[[2021,4,15]],"date-time":"2021-04-15T00:00:00Z","timestamp":1618444800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Medicine and Health Science Technology Development Plan Project of Shandong Province","award":["2019WS042"],"award-info":[{"award-number":["2019WS042"]}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"\nObjective<\/jats:title>\nTo compare the safety and effectiveness between helmet and face mask noninvasive mechanical ventilation (NIMV) in patients with acute respiratory failure (ARF).<\/jats:p>\n<\/jats:sec>\n\nMethods<\/jats:title>\nEnglish databases included PubMed, EMBASE, Cochrane Central Register of Controlled Trials and Web of Science. Chinese databases involved Wanfang Data, China Knowledge Resource Integrated Database and Chinese Biological Medicine Database. Randomized controlled trials (RCTs) comparing helmet and face mask NIMV for patients with ARF were searched. Meta-analysis was performed using Review manager 5.1.0.<\/jats:p>\n<\/jats:sec>\n\nResults<\/jats:title>\nTwelve trials with a total of 569 patients were eligible. Our meta-analysis showed that, comparing with face mask, helmet could significantly decrease the incidences of intolerance [risk ratio (RR) 0.19; 95% confidence interval (CI) 0.09\u22120.39], facial skin ulcer (RR 0.19; 95% CI 0.08\u22120.43) and aerophagia (RR 0.15; 95% CI 0.06\u22120.37), reduce respiratory rate [mean difference (MD) -3.10; 95% CI -4.85 to -1.34], intubation rate (RR 0.39; 95% CI 0.26\u22120.59) and hospital mortality (RR 0.62; 95% CI 0.39\u22120.99) in patients with ARF, and improve oxygenation index in patients with hypoxemic ARF (MD 55.23; 95% CI 31.37\u221279.09). However, subgroupanalysis for hypercapnic ARF revealed that PaCO2<\/jats:sub> was significantly reduced in face mask group compared with helmet group (MD 5.34; 95% CI 3.41\u22127.27).<\/jats:p>\n<\/jats:sec>\n\nConclusion<\/jats:title>\nNIMV with helmet can improve the patient\u2019s tolerance, reduce adverse events, increase oxygenation effect, and decrease intubation rate and hospital mortality comparing to face mask. However, the low number of patients from included studies may preclude strong conclusions. Large RCTs are still needed to provide more robust evidence.<\/jats:p>\n<\/jats:sec>","DOI":"10.1371\/journal.pone.0250063","type":"journal-article","created":{"date-parts":[[2021,4,16]],"date-time":"2021-04-16T13:35:19Z","timestamp":1618580119000},"page":"e0250063","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":13,"title":["The roles of noninvasive mechanical ventilation with helmet in patients with acute respiratory failure: A systematic review and 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