{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T23:20:43Z","timestamp":1769556043165,"version":"3.49.0"},"reference-count":16,"publisher":"Mattioli1885","issue":"1","license":[{"start":{"date-parts":[[2022,11,17]],"date-time":"2022-11-17T00:00:00Z","timestamp":1668643200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2022,11,17]],"date-time":"2022-11-17T00:00:00Z","timestamp":1668643200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Czech Society of Intensive Care Medicine","award":["01\/2021"],"award-info":[{"award-number":["01\/2021"]}]},{"DOI":"10.13039\/501100003243","name":"Ministerstvo Zdravotnictv\u00ed Cesk\u00e9 Republiky","doi-asserted-by":"publisher","award":["Czech Ministry of Health Research Grant RVO-VFN64165"],"award-info":[{"award-number":["Czech Ministry of Health Research Grant RVO-VFN64165"]}],"id":[{"id":"10.13039\/501100003243","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Ultrasound J"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>The role of chest drain (CD) location by bedside imaging methods in the diagnosis of pneumothorax has not been explored in a prospective study yet.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Covid-19 ARDS patients with pneumothorax were prospectively monitored with chest ultrasound (CUS) and antero-posterior X-ray (CR) performed after drainage in the safe triangle. CD foreshortening was estimated as a decrease of chest drain index (CDI\u2009=\u2009length of CD in chest taken from CR\/depth of insertion on CD scale\u2009+\u20095\u00a0cm). The angle of inclination of the CD was measured between the horizontal line and the CD at the point where it enters pleural space on CR.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Of the total 106 pneumothorax cases 80 patients had full lung expansion on CUS, the CD was located by CUS in 69 (86%), the CDI was 0.99 (0.88\u20131.06). 26 cases had a residual pneumothorax after drainage (24.5%), the CD was located by CUS in 31%, the CDI was 0.76 (0.6\u20130.93),\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.01. The risk ratio for a pneumothorax in a patient with not visible CD between the pleural layers on CUS and an associated low CDI on CR was 5.97,\n                      <jats:italic>p<\/jats:italic>\n                      \u02c20.0001. For the patients with a steep angle of inclination (&gt;\u200950\u00b0) of the CD, the risk ratio for pneumothorax was not significant (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.17). A continued air leak from the CD after drainage is related to the risk for a residual pneumothorax (RR 2.27,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.003).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Absence of a CD on CUS post drainage, low CDI on CR and continuous air leak significantly associate with residual occult pneumothorax which may evade diagnosis on an antero-posterior CR.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s13089-022-00296-0","type":"journal-article","created":{"date-parts":[[2022,11,17]],"date-time":"2022-11-17T07:03:54Z","timestamp":1668668634000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Interpleural location of chest drain on ultrasound excludes pneumothorax and associates with a low degree of chest drain foreshortening on the antero-posterior chest X-ray"],"prefix":"10.5826","volume":"14","author":[{"given":"Michal","family":"Maly","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masego Candy","family":"Mokotedi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eva","family":"Svobodova","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marek","family":"Flaksa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michal","family":"Otahal","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zdenek","family":"Stach","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jan","family":"Rulisek","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomas","family":"Brozek","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michal","family":"Porizka","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1864-2143","authenticated-orcid":false,"given":"Martin","family":"Balik","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"27750","published-online":{"date-parts":[[2022,11,17]]},"reference":[{"issue":"2","key":"296_CR1","doi-asserted-by":"publisher","first-page":"437","DOI":"10.1097\/ALN.0000000000000558","volume":"122","author":"B Bouhemad","year":"2015","unstructured":"Bouhemad B, Mongodi S, Via G, Rouquette I (2015) Ultrasound for \u201clung monitoring\u201d of ventilated patients. 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