{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T15:01:23Z","timestamp":1784905283908,"version":"3.55.0"},"reference-count":26,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T00:00:00Z","timestamp":1784851200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T00:00:00Z","timestamp":1784851200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Hemodialysis International"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Blood gas analysis is routinely performed in hemodialysis patients to monitor acid\u2013base status and serum potassium. Despite frequent testing, longitudinal analyses of acid\u2013base parameters over patients' lifetime are lacking.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We conducted a retrospective analysis of 45 chronic hemodialysis patients at a secondary dialysis center in Austria, including 7946 blood gas analyses. Acid\u2013base disturbances and respiratory compensation to metabolic acidosis were evaluated. Longitudinal changes were assessed at three time points: START (4\u2009weeks after dialysis initiation), MID (mid\u2010survival), and EOL (last 4\u2009weeks of dialysis). Four measurements per patient were included at each time point. Venous blood gas values were adjusted to arterial equivalents to improve comparability. Linear mixed\u2010effects models were used for analysis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Findings<\/jats:title>\n                    <jats:p>Venous blood gas analysis systematically misclassified respiratory status; standard formulas for compensation (e.g., Winter's formula) were not applicable. Over the course of dialysis treatment, acid\u2013base and electrolyte homeostasis changed significantly. Temporal patterns were largely comparable between expected and unexpected death, with the exception of lactate, which increased significantly in patients with unexpected death.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion<\/jats:title>\n                    <jats:p>This study provides a comprehensive longitudinal evaluation of acid\u2013base parameters from dialysis initiation to death. Observed temporal patterns, particularly in patients with unexpected death, suggest distinct terminal metabolic trajectories. These findings warrant further investigation in larger cohorts, potentially supported by artificial intelligence\u2010based analyses.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/hdi.70118","type":"journal-article","created":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T14:05:07Z","timestamp":1784901907000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Longitudinal Changes in Acid\u2013Base Parameters From Dialysis Initiation to Death in Maintenance Hemodialysis Patients"],"prefix":"10.1111","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0765-351X","authenticated-orcid":false,"given":"Christoph","family":"Schwarz","sequence":"first","affiliation":[{"name":"Department of Internal Medicine Pyhrn\u2010Eisenwurzen Klinikum Steyr  Steyr Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5551-8227","authenticated-orcid":false,"given":"Gregor","family":"Lindner","sequence":"additional","affiliation":[{"name":"Department of Emergency Medicine Kepler Universit\u00e4tsklinikum GmbH, Johannes Kepler University  Linz Austria"},{"name":"Department of Emergency Medicine Inselspital, University of Bern  Bern Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1211-0253","authenticated-orcid":false,"given":"Markus","family":"Pirklbauer","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine IV (Nephrology and Hypertension) Medical University of Innsbruck  Innsbruck Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,7,24]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/sdi.12659"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/sdi.12682"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1681\/ASN.2016070780"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1053\/j.ajkd.2015.04.014"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0272-6386(04)00936-9"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.2215\/CJN.00010505"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1093\/ndt\/gfw022"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.xkme.2020.01.003"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.xkme.2022.100523"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1081\/JDI-49542"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.5049\/EBP.2007.5.2.95"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1177\/20543581241256774"},{"key":"e_1_2_9_14_1","first-page":"195","article-title":"Physiological 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