{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,16]],"date-time":"2026-05-16T15:22:15Z","timestamp":1778944935818,"version":"3.51.4"},"reference-count":5,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2021,6,29]],"date-time":"2021-06-29T00:00:00Z","timestamp":1624924800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Australas J Ultrason Med"],"published-print":{"date-parts":[[2021,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Effusive pneumothorax is an abnormal collection of air and fluid within the pleural space: blood, pus, or serous fluid. Thus, effusive pneumothorax can be categorized as hemopneumothorax, pyopneumothorax, or hydropneumothorax, depending on the type of fluid accumulation. Hydropneumothorax is a clinical condition defined by the presence of air and serous fluid within the pleura space. Hydropneumothorax is one of the common respiratory emergencies encountered in the emergency department in India. Etiologies can be classified into infectious and non\u2010infectious causes, among which tuberculosis being the most common one. Point of care ultrasound (POCUS) can help diagnose hydropneumothorax at the bedside rather than shift the patient for an X\u2010ray. Here, we describe a case of hydropneumothorax, which was diagnosed using POCUS by characteristic sonographic signs, namely \u201cHydro\u2010point\u201d and \u201cbarcode\u2010hydro point\u2010sinusoidal sign.\u201d Sonographic hydro\u2010point is the transition zone of the air\u2010fluid interface, which is seen in hydropneumothorax. Targhetta et al., in 1992, introduced the term \u201cHydro\u2010point\u201d in lung ultrasound for diagnosing hydropneumothorax but has been under\u2010reported\/unspoken much in the literature. With the use of POCUS, we diagnosed and stabilized the patient in the Emergency Department.<\/jats:p>","DOI":"10.1002\/ajum.12278","type":"journal-article","created":{"date-parts":[[2021,6,30]],"date-time":"2021-06-30T04:45:27Z","timestamp":1625028327000},"page":"246-248","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["\u2018Hydro\u2010point\u2019 \u2013 The forgotten and unspoken entity in hydropneumothorax"],"prefix":"10.1002","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6681-8388","authenticated-orcid":false,"given":"Sasikumar","family":"Mahalingam","sequence":"first","affiliation":[{"name":"Department of Emergency Medicine Jawaharlal Institute of Postgraduate Medical Education and Research Puducherry India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gunaseelan","family":"Rajendran","sequence":"additional","affiliation":[{"name":"Department of Emergency Medicine Jawaharlal Institute of Postgraduate Medical Education and Research Puducherry India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Balamurugan","family":"Nathan","sequence":"additional","affiliation":[{"name":"Department of Emergency Medicine Jawaharlal Institute of Postgraduate Medical Education and Research Puducherry India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ezhil","family":"Kugan","sequence":"additional","affiliation":[{"name":"Department of Emergency Medicine Jawaharlal Institute of Postgraduate Medical Education and Research Puducherry India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anuusha","family":"Sadasivam","sequence":"additional","affiliation":[{"name":"Department of Emergency Medicine Jawaharlal Institute of Postgraduate Medical Education and Research Puducherry India"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,6,29]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1378\/chest.101.4.931"},{"key":"e_1_2_7_3_1","first-page":"491","article-title":"Hydro\u2010Point in a ventilated COVID\u201019 patient with hydropneumothorax secondary to barotrauma","volume":"70","author":"Alonso JMN","year":"2020","journal-title":"Rev Esp Anestesiol Reanim"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1186\/2036-7902-5-10"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.4103\/0970-2113.180804"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1155\/2016\/8097105"}],"container-title":["Australasian Journal of Ultrasound in Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ajum.12278","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/ajum.12278","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ajum.12278","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,28]],"date-time":"2023-08-28T08:28:10Z","timestamp":1693211290000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/ajum.12278"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,6,29]]},"references-count":5,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2021,11]]}},"alternative-id":["10.1002\/ajum.12278"],"URL":"https:\/\/doi.org\/10.1002\/ajum.12278","archive":["Portico"],"relation":{},"ISSN":["1836-6864","2205-0140"],"issn-type":[{"value":"1836-6864","type":"print"},{"value":"2205-0140","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,6,29]]},"assertion":[{"value":"2020-10-29","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-05-30","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-06-29","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}