{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:55:07Z","timestamp":1787028907681,"version":"build-2736575974"},"reference-count":21,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2020,7,18]],"date-time":"2020-07-18T00:00:00Z","timestamp":1595030400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Medicina"],"abstract":"<jats:p>Background and Objectives: Dehydration might be an issue after hip fracture surgery, but the optimal tools to identify the dehydrated condition have not been determined. The aim of the present study was to compare the characteristics of elderly postoperative patients who were classified as dehydrated according to the methods used in the clinic. Materials and Methods: Thirty-eight patients aged between 65 and 97 (mean, 82) years were studied after being admitted to a geriatric department for rehabilitation after hip fracture surgery. Each patient underwent blood analyses, urine sampling, and clinical examinations. Results: Patients ingested a mean of 1,008 mL (standard deviation, 309 mL) of fluid during their first day at the clinic. Serum osmolality increased significantly with the plasma concentrations of sodium, creatinine, and urea. Seven patients had high serum osmolality (\u2265300 mosmol\/kg) that correlated with the presence of tongue furrows (p &lt; 0.04), poor skin turgor (p &lt; 0.03), and pronounced albuminuria (p &lt; 0.03). Eight patients had concentrated urine (urine-specific gravity \u2265 1.025) that correlated with a low intake of liquid and with a decrease in body weight during the past month of \u22123.0 kg (25\u201375 th percentiles, \u22125.1 to \u22120.9) versus +0.2 (\u22121.9 to +2.7) kg (p &lt; 0.04). Conclusions: Renal fluid conservation of water, either in the form of hyperosmolality or concentrated urine, was found in 40% of the patients after hip fracture surgery. Hyperosmolality might not indicate a more severe fluid deficit than is indicated by concentrated urine but suggests an impaired ability to concentrate the urine.<\/jats:p>","DOI":"10.3390\/medicina56070361","type":"journal-article","created":{"date-parts":[[2020,7,20]],"date-time":"2020-07-20T06:08:17Z","timestamp":1595225297000},"page":"361","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Signs of Dehydration after Hip Fracture Surgery: An Observational Descriptive Study"],"prefix":"10.3390","volume":"56","author":[{"given":"Louise","family":"Ekman","sequence":"first","affiliation":[{"name":"Department of Geriatrics, Dalens Hospital, 121 31 Enskededalen, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter","family":"Johnson","sequence":"additional","affiliation":[{"name":"Department of Geriatrics, Nacka Clinic, 131 37 Nacka, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert G.","family":"Hahn","sequence":"additional","affiliation":[{"name":"Department of Research, S\u00f6dert\u00e4lje Hospital, 152 86 S\u00f6dert\u00e4lje, Sweden"},{"name":"Karolinska Institutet at Danderyds Hospital (KIDS), 182 57 Danderyd, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,7,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1633","DOI":"10.1007\/s00198-009-0920-3","article-title":"Excess mortality following hip fracture: A systematic epidemiological review","volume":"20","author":"Abrahamsen","year":"2009","journal-title":"Osteoporos. 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