Association of hyponatremia with outcomes after geriatric trauma: a systematic review and meta-analysis

Background Trauma is a major cause of mortality in the elderly population. Hyponatremia is the most common electrolyte imbalance in geriatric patients and has been demonstrated to be a risk factor for altered cognition, low bone density, falls, and death. We systematically and critically reviewed th...

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Main Authors: Graham A Colditz, Chongliang Luo, Ariana Naaseh, Steven Tohmasi, Carrie Stoll, Lauren H Yaeger, Mark H Hoofnagle, Marguerite W Spruce
Format: Article
Language:English
Published: BMJ Publishing Group 2025-03-01
Series:Trauma Surgery & Acute Care Open
Online Access:https://tsaco.bmj.com/content/10/1/e001562.full
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author Graham A Colditz
Chongliang Luo
Ariana Naaseh
Steven Tohmasi
Carrie Stoll
Lauren H Yaeger
Mark H Hoofnagle
Marguerite W Spruce
author_facet Graham A Colditz
Chongliang Luo
Ariana Naaseh
Steven Tohmasi
Carrie Stoll
Lauren H Yaeger
Mark H Hoofnagle
Marguerite W Spruce
author_sort Graham A Colditz
collection DOAJ
description Background Trauma is a major cause of mortality in the elderly population. Hyponatremia is the most common electrolyte imbalance in geriatric patients and has been demonstrated to be a risk factor for altered cognition, low bone density, falls, and death. We systematically and critically reviewed the literature to ascertain the association between hyponatremia and geriatric trauma outcomes.Methods We searched seven databases for articles published from inception to October 2023. Studies included reported on geriatric trauma, hyponatremia, and clinical outcomes. Two investigators independently reviewed 6535 abstracts, 235 full-text articles, and critically appraised each study. Study details, patient characteristics, and outcomes were independently extracted by two reviewers. Data quality assessment was performed using the Grading of Recommendations Assessment, Development, and Evaluation approach. Publication bias was assessed using funnel plot-based methods. A meta-analysis of risk ratios (RR) was performed using the random effects method.Results Four retrospective cohort studies involving 11 894 geriatric patients were included. Among these, 492 (21.4%) were classified as trauma patients due to a fall and 1806 (78.6%) were classified as a trauma patient due to the presence of a fracture. In total, 2298 (19.3%) patients were classified as hyponatremic (125–135 mmol/L) while 9596 (80.7%) were classified as normonatremic. The pooled RR for in-hospital mortality for hyponatremic patients was 2.23 (95% CI 1.51 to 3.74) with high heterogeneity across the studies (I2=82.17%).Conclusions Geriatric trauma patients presenting with hyponatremia appear to have an increased risk of in-hospital mortality. Given this association, national trauma registries should consider collecting serum sodium values for geriatric patients and providers should work to address hyponatremia as a possible contribution to falls. Given the paucity of published literature on this topic, there is a need for prospective studies evaluating the association between hyponatremia and geriatric trauma outcomes.Level of evidence Level III, systematic review with meta-analysis
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spelling doaj-art-1c5a775c22784f7cbf0e79a893745fb82025-08-20T03:41:05ZengBMJ Publishing GroupTrauma Surgery & Acute Care Open2397-57762025-03-0110110.1136/tsaco-2024-001562Association of hyponatremia with outcomes after geriatric trauma: a systematic review and meta-analysisGraham A Colditz0Chongliang Luo1Ariana Naaseh2Steven Tohmasi3Carrie Stoll4Lauren H Yaeger5Mark H Hoofnagle6Marguerite W Spruce7Division of Public Health Sciences, Department of Surgery, Washington University in St Louis School of Medicine, St Louis, Missouri, USADivision of Public Health Sciences, Department of Surgery, Washington University in St Louis School of Medicine, St Louis, Missouri, USADivision of Acute and Critical Care Surgery, Department of Surgery, Washington University in St Louis School of Medicine, St Louis, Missouri, USADivision of Acute and Critical Care Surgery, Department of Surgery, Washington University in St Louis School of Medicine, St Louis, Missouri, USADivision of Public Health Sciences, Department of Surgery, Washington University in St Louis School of Medicine, St Louis, Missouri, USABecker Medical Library, Washington University in St Louis School of Medicine, St Louis, Missouri, USADivision of Acute and Critical Care Surgery, Department of Surgery, Washington University in St Louis School of Medicine, St Louis, Missouri, USADivision of Acute and Critical Care Surgery, Department of Surgery, Washington University in St Louis School of Medicine, St Louis, Missouri, USABackground Trauma is a major cause of mortality in the elderly population. Hyponatremia is the most common electrolyte imbalance in geriatric patients and has been demonstrated to be a risk factor for altered cognition, low bone density, falls, and death. We systematically and critically reviewed the literature to ascertain the association between hyponatremia and geriatric trauma outcomes.Methods We searched seven databases for articles published from inception to October 2023. Studies included reported on geriatric trauma, hyponatremia, and clinical outcomes. Two investigators independently reviewed 6535 abstracts, 235 full-text articles, and critically appraised each study. Study details, patient characteristics, and outcomes were independently extracted by two reviewers. Data quality assessment was performed using the Grading of Recommendations Assessment, Development, and Evaluation approach. Publication bias was assessed using funnel plot-based methods. A meta-analysis of risk ratios (RR) was performed using the random effects method.Results Four retrospective cohort studies involving 11 894 geriatric patients were included. Among these, 492 (21.4%) were classified as trauma patients due to a fall and 1806 (78.6%) were classified as a trauma patient due to the presence of a fracture. In total, 2298 (19.3%) patients were classified as hyponatremic (125–135 mmol/L) while 9596 (80.7%) were classified as normonatremic. The pooled RR for in-hospital mortality for hyponatremic patients was 2.23 (95% CI 1.51 to 3.74) with high heterogeneity across the studies (I2=82.17%).Conclusions Geriatric trauma patients presenting with hyponatremia appear to have an increased risk of in-hospital mortality. Given this association, national trauma registries should consider collecting serum sodium values for geriatric patients and providers should work to address hyponatremia as a possible contribution to falls. Given the paucity of published literature on this topic, there is a need for prospective studies evaluating the association between hyponatremia and geriatric trauma outcomes.Level of evidence Level III, systematic review with meta-analysishttps://tsaco.bmj.com/content/10/1/e001562.full
spellingShingle Graham A Colditz
Chongliang Luo
Ariana Naaseh
Steven Tohmasi
Carrie Stoll
Lauren H Yaeger
Mark H Hoofnagle
Marguerite W Spruce
Association of hyponatremia with outcomes after geriatric trauma: a systematic review and meta-analysis
Trauma Surgery & Acute Care Open
title Association of hyponatremia with outcomes after geriatric trauma: a systematic review and meta-analysis
title_full Association of hyponatremia with outcomes after geriatric trauma: a systematic review and meta-analysis
title_fullStr Association of hyponatremia with outcomes after geriatric trauma: a systematic review and meta-analysis
title_full_unstemmed Association of hyponatremia with outcomes after geriatric trauma: a systematic review and meta-analysis
title_short Association of hyponatremia with outcomes after geriatric trauma: a systematic review and meta-analysis
title_sort association of hyponatremia with outcomes after geriatric trauma a systematic review and meta analysis
url https://tsaco.bmj.com/content/10/1/e001562.full
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