{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T11:04:02Z","timestamp":1790075042500,"version":"4.0.1"},"reference-count":22,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T00:00:00Z","timestamp":1789948800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Eur. Burn J.","EBJ"],"abstract":"<jats:p>Background: Total body surface area (TBSA) quantifies burn extent, whereas burn depth reflects tissue involvement. In chemical burns, small surface-area injuries may still include deeper tissue damage, but this patient-level co-occurrence remains incompletely described; we therefore examined it in hospitalized patients in northern China. Methods: We retrospectively analyzed a merged 2016\u20132022 burn database. Records coded as chemical burns were included when the recorded length of stay exceeded one day. Results: Of 5929 screened records, 214 were coded as chemical burns. Exclusion of two short-stay records left 212 unique patients. Most were male (74.5%) and aged 18\u201360 years (84.9%). Workplace exposure was recorded for 47.2%. Among 105 patients with \u22642% TBSA and a known depth, 87 (82.9%; 95% confidence interval [CI]: 74.5\u201388.9%) had a recorded maximum-depth category involving a full-thickness component. Among all 109 patients with \u22642% TBSA, 81 (74.3%; 95% CI: 65.4\u201381.6%) had a positive recorded III\/IV-degree area. Acids and alkalis accounted for 30.2% and 29.7% of recorded exposures, respectively, and 37.3% underwent at least one operation. Conclusions: Working-age adults predominated, and workplace exposure was the most common recorded setting. Low TBSA frequently co-occurred with recorded full-thickness involvement in this selected inpatient cohort. The findings support reporting recorded burn depth alongside TBSA in hospitalized chemical injuries and improving standardized prospective documentation.<\/jats:p>","DOI":"10.3390\/ebj7030049","type":"journal-article","created":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T09:04:17Z","timestamp":1790067857000},"page":"49","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Chemical Burns in Northern China: Co-Occurrence of Low TBSA and Recorded Full-Thickness Involvement in a 7-Year Retrospective Cohort"],"prefix":"10.3390","volume":"7","author":[{"given":"Tian","family":"Liu","sequence":"first","affiliation":[{"name":"Department of Outpatient, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100048, China"},{"name":"Senior Department of Hematology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing 100071, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"}]},{"given":"Hui","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Outpatient, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100048, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"investigation","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"}]},{"given":"Fangchao","family":"Hu","sequence":"additional","affiliation":[{"name":"Department of Outpatient, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100048, China"},{"name":"Graduate School, Chinese PLA General Hospital, Beijing 100853, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"investigation","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8529-1473","authenticated-orcid":false,"given":"Yirui","family":"Qu","sequence":"additional","affiliation":[{"name":"Department of Outpatient, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100048, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"investigation","vocabulary":"credit"},{"role":"data-curation","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Xiangyu","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Outpatient, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100048, China"},{"name":"Department of General Surgery, The Ninth Medical Center of Chinese PLA General Hospital, Beijing 100101, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"visualization","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Chengfeng","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Outpatient, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100048, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"visualization","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Yunfei","family":"Chi","sequence":"additional","affiliation":[{"name":"Department of Outpatient, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100048, China"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"supervision","vocabulary":"credit"},{"role":"conceptualization","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,21]]},"reference":[{"key":"ref_1","unstructured":"World Health Organization (2026, July 28). 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