{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,6,20]],"date-time":"2025-06-20T08:47:17Z","timestamp":1750409237483,"version":"3.37.3"},"reference-count":16,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2017,7,17]],"date-time":"2017-07-17T00:00:00Z","timestamp":1500249600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Acute Medicine &amp; Surgery"],"published-print":{"date-parts":[[2017,10]]},"abstract":"<jats:sec><jats:title>Aim<\/jats:title><\/jats:sec><jats:sec><jats:label\/><jats:p>To study the most effective body position for Heimlich maneuver.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A choking simulation manikin was connected to a laryngeal model of a child or an adult, and a differential pressure transducer recorded the airway pressure and waveform during the maneuver. A konjac jelly was placed on the larynx to mimic complete supralaryngeal obstruction. The maneuver (five successive compressions) was carried out six times each in standing, prone, and supine positions. For cases of children, we added a supine position with a pillow under the back.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In the adult model, airway obstruction was more frequently relieved in the supine and prone positions than in the standing position (<jats:italic>P<\/jats:italic> &lt; 0.001). In the child model, airway obstruction was more frequently relieved in the supine position, with a pillow, and in the prone position, than in the standing position (<jats:italic>P<\/jats:italic> &lt; 0.001). Without relief, successive Heimlich maneuvers made the airway pressure increasingly negative (adult, from \u221221.9 \u00b1 6.5 cmH<jats:sub>2<\/jats:sub>O to \u221231.5 \u00b1 9.1 cmH<jats:sub>2<\/jats:sub>O in the standing position [<jats:italic>P<\/jats:italic> &lt; 0.001]; child, from \u221215.0 \u00b1 9.5 cmH<jats:sub>2<\/jats:sub>O to \u221230.0 \u00b1 9.2 cmH<jats:sub>2<\/jats:sub>O in the standing position [<jats:italic>P<\/jats:italic> &lt; 0.001] and from \u221235.0 \u00b1 17.4 cmH<jats:sub>2<\/jats:sub>O to \u221247.3 \u00b1 25.1 cmH<jats:sub>2<\/jats:sub>O in the supine position without a pillow [<jats:italic>P<\/jats:italic> = 0.002]).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The Heimlich maneuver was more effective in the supine and prone positions. In children, the prone position may be most effective. Successive Heimlich maneuvers may be harmful when the airway is not relieved after the first compression.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ams2.297","type":"journal-article","created":{"date-parts":[[2017,7,18]],"date-time":"2017-07-18T01:52:37Z","timestamp":1500342757000},"page":"418-425","source":"Crossref","is-referenced-by-count":3,"title":["Influence of body position during Heimlich maneuver to relieve supralaryngeal obstruction: a manikin study"],"prefix":"10.1002","volume":"4","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4901-5700","authenticated-orcid":false,"given":"Michitaro","family":"Ichikawa","sequence":"first","affiliation":[{"name":"Department of Emergency and Critical Care Medicine Shinshu University School of Medicine Matsumoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"So","family":"Oishi","sequence":"additional","affiliation":[{"name":"Department of Emergency and Critical Care Medicine Shinshu University School of Medicine Matsumoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Katsunori","family":"Mochizuki","sequence":"additional","affiliation":[{"name":"Department of Emergency and Critical Care Medicine Shinshu University School of Medicine Matsumoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kenichi","family":"Nitta","sequence":"additional","affiliation":[{"name":"Department of Emergency and Critical Care Medicine Shinshu University School of Medicine Matsumoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazufumi","family":"Okamoto","sequence":"additional","affiliation":[{"name":"Department of Emergency and Critical Care Medicine Shinshu University School of Medicine Matsumoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroshi","family":"Imamura","sequence":"additional","affiliation":[{"name":"Department of Emergency and Critical Care Medicine Shinshu University School of Medicine Matsumoto Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2017,7,17]]},"reference":[{"key":"e_1_2_9_2_1","first-page":"1","article-title":"International comparative analysis of injury mortality. 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Available fromhttp:\/\/www.fda.gov\/ICECI\/EnforcementActions\/EnforcementStory\/EnforcementStoryArchive\/ucm105953.htm"},{"key":"e_1_2_9_7_1","unstructured":"Food Standards Agency (UK).Mini fruit gel sweets containing Konjac potential choking hazard;2001. [cited 11 Jan 2016]. Available fromhttp:\/\/www.food.gov.uk\/enforcement\/alerts\/2001\/dec\/jellies."},{"key":"e_1_2_9_8_1","unstructured":"Food and Drug Administration (US).Detention without physical examination of gel candies containing konjac. Import Alert 33\u201015;2011. [cited 11 Jan 2016]. Available fromhttp:\/\/www.accessdata.fda.gov\/cms_ia\/importalert_105.html"},{"key":"e_1_2_9_9_1","unstructured":"National Consumer Affairs Center of Japan (JPN).The fatal choking accidents caused by konjac jelly;2008. [cited 11 Jan 2016]. 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