Dehydration in older people: A systematic review of the effects of dehydration on health outcomes, healthcare costs and cognitive performance

Trends in Dehydration in Older People: Identifying Landmark Scientific Contributions

BACKGROUND

Dehydration and low fluid intake cause the most prevalent electrolyte imbalance in older adults and increase their morbi-mortality.

OBJECTIVE

To analyse the scientific production on dehydration in older adults.

METHODS

A bibliometric analysis was performed using the Web of Science Core Collection database. The data were analysed using two software programs, the Bibliometric package for RStudio version 4.2.2, and VOSviewer 1.6.18 for the analysis of the scientific production, authors, citations, countries and collaborations, journals, research areas, and keywords.

RESULTS

A total of 205 articles were selected. An increase in the number of publications has been observed since 2012, with 2021 being the most productive year. With respect to scientific production, although the USA had the most publications, the two most prolific authors were affiliated with an institution located in the UK, with this country having the most collaborations with other countries in the development of the subject matter. The co-occurrence analysis indicated that the words with the highest occurrence were dehydration (n = 103), hydration (n = 39), prevalence (n = 30), mortality (n = 29), and thirst (n = 29).

CONCLUSIONS

This is the first bibliometric analysis that shows the publication trends on dehydration in older adults. Although the number of publications is limited, they have increased in number in the last few years. The research trends are centred on the prevalence of dehydration and its related factors. More studies are needed that are centred on interventions to correct the problem, to help fight against the electrolyte imbalances that occur, and to reduce the morbi-mortality associated with this condition.

Preoperative goal directed therapy in geriatric hip fracture patients - a retrospective quality improvement study

BACKGROUND

Hip fractures in older adults are common and carry a high risk of morbidity and mortality. Preoperative dehydration, a key risk factor for adverse outcomes, is often underdiagnosed at admission. It is important to identify high risk patients and optimize modifiable risk factors to improve the postoperative outcome. The p-POSSUM Score is a useful predictor of postoperative mortality risk. Implementing a defined fluid resuscitation protocol early in high-risk groups has proven effective in reducing both postoperative morbidity and mortality.

MATERIALS AND METHODS

We conducted a single-center, retrospective quality improvement study at a Level 1 trauma center in Switzerland, focusing on geriatric patients over 70 with a p-POSSUM Score > 5% and a proximal femur fracture, undergoing surgery between February 2015 and September 2019. We hypothesized that our institutional goal-directed fluid resuscitation protocol (GDT) would result in lower 30- and 90-day mortality rates and fewer complications for these high-risk patients. Outcome changes over time were analyzed annually.

RESULTS

312 patients were included in our study. 147 followed our institutional GDT protocol, while 165 patients received standard care and were used as a control group. Initially, the odds ratio (OR) for 30-days mortality favored the GDT group; 2015 0.30 (CI: 0.07-1.18), 2016 0.28 (CI: 0.07-1.07), 2017 0.51 (CI: 0.13-2.04). This shifted toward the Non-GDT group in the year 2018 with a OR of 2.14 (CI: 0.59-7.84) and 2019 with 1.92 (CI 0.47-7.83). The pattern for 90-day mortality results was similar and slightly more pronounced. The estimates for the odds ratios remained consistent even after adjustment for the p-POSSUM score. The relative frequencies of complications showed no remarkable differences between the groups (GDT vs. Non-GDT).

CONCLUSION

In our study, the treatment according to our GDT protocol was associated with survival advantage in the first three years. However, this trend reversed in 2018, with Non-GDT patients faring better. Although our retrospective study does not provide enough evidence of causality between the protocol and the mortality rates, it revealed that continuous critical evaluation of internal processes is essential in healthcare for quality management. This allows timely identification and adaptation of processes to issues, especially after initially positive results.

Oropharyngeal Dysphagia in Hospitalized Older Adults with Dementia: A Prospective Cohort Study

OBJECTIVE

Oropharyngeal dysphagia (dysphagia) is highly prevalent (up to 86%) in hospitalized patients with Alzheimer disease and related dementias (ADRD). This study aims to describe the management and clinical course of dysphagia in hospitalized patients with ADRD.

DESIGN

Prospective observational cohort study.

SETTING AND PARTICIPANTS

The study was conducted across 10 hospitals within a large health system in New York. Participants were older adults with ADRD admitted to the medicine service and diagnosed with dysphagia to liquids on speech-language pathologist (SLP) assessment and were recruited between January and June 2023.

METHODS

Baseline characteristics [eg, dementia Functional Assessment Staging Tool (FAST)], dysphagia management (eg, prescribed diet), and clinical course (eg, dysphagia improvement, respiratory complications) were collected.

RESULTS

Of patients with ADRD and dysphagia (n = 62), the average age was 86.5 and 66.1% were FAST Stage 7. On admission, 48.4% had pneumonia, 79.0% had delirium, and 69.4% were made nil per os (NPO) for aspiration risk. Of those who received SLP reassessment after diet initiation (n = 25), 76% demonstrated dysphagia improvement; 75% of patients with FAST stage 7 demonstrated improvement. Respiratory complications occurred in 21.0% of patients on the following diets: NPO, nasogastric tube feeding, dysphagia diets, and comfort feeds. In univariate analyses, hospital-acquired dehydration, no dysphagia improvement, and delirium were associated with respiratory complications.

CONCLUSIONS AND IMPLICATIONS

The potential for dysphagia improvement in hospitalized patients with ADRD (even those with advanced dementia) highlights the critical need for standardizing reassessment. Further studies are needed to evaluate factors associated with respiratory complications in this population.

The relationship between oropharyngeal dysphagia and dehydration in older adults

BACKGROUND

Relationship between dysphagia and dehydration has not been studied widely. The aim of this study is to determine the frequency of dysphagia and dehydration in geriatric outpatient clinic, to evaluate the relationship between these two conditions.

METHODS

The cross-sectional study included 1345 patients. Plasma osmolarity (Posm) was calculated using the following formula: [1.86 x (Na + K) + 1.15 x glucose + urea + 14]. Overt dehydration was defined as a calculated Posm of > 300 mmol/L. Eating Assessment Tool (EAT-10) score of ≥ 3 was accepted as dysphagia. Associations between dehydration and dysphagia was evaluated.

RESULTS

Mean age was 78 ± 8 years, and 71% were females. Dysphagia was observed in 27% of patients. Dysphagia was associated with a higher number of drug exposure, dependency on basic activities of daily living and geriatric depression (p < 0.05). Overt dehydration was found in 29% of patients with dysphagia, and 21% of patients with no dysphagia (p = 0.002); and dysphagia was significantly associated with overt dehydration mmol/L (OR 1.49, 95% CI 1.13-1.96, p = 0.005) after adjustments for age and sex. In another model, EAT-10 score was found as one of the independent predictors of overt dehydration (OR1.03, 95% CI 1.00-1.06, p = 0.38), along with diabetes mellitus (OR 2.32, 95% CI 1.72-3.15, p < 0.001), chronic kidney disease (OR 3.05, 95% CI 2.24-4.15, p < 0.001), and MNA score (OR 0.97, 95% CI 0.94-1.00, p = 0.031).

CONCLUSION

EAT-10 scale was independently associated with overt dehydration among older adults, as MNA score was. Correction of both dysphagia and malnutrition might improve overt dehydration to a better extent than correction either of these factors alone. Future studies are needed to test cause and effect relationships.

Joint association of serum sodium and frailty with mild cognitive impairment among hospitalized older adults with chronic diseases: a cross-sectional study

Background

To examine the associations of serum sodium and frailty with the risk of mild cognitive impairment (MCI) among hospitalized older adults with chronic diseases.

Methods

A cross-sectional study was conducted in 403 hospitalized older adults with chronic diseases. Serum sodium concentration was assessed by the ion-selective electrode method, frailty status was evaluated by the FRAIL scale, and MCI was determined by the Montreal Cognitive Assessment (MoCA). Multiple logistic regression models were used to estimate the associations of serum sodium and frailty with MCI.

Results

Participants with the lowest tertile of serum sodium had a higher risk of MCI than those in the middle tertile group (OR = 1.75, 95% CI: 1.01-3.04). Below 143 mmol/L, the risk of MCI was 1.38 (95% CI: 1.03-1.84) for per 1 SD decrease in serum sodium. Compared with the robust group, frailty was significantly associated with an increased risk of MCI (OR = 3.94, 95% CI: 1.92-8.10). Moreover, in comparison with participants with the middle tertile of serum sodium and who were robust/prefrail, those with frailty and either the lowest (OR = 5.53, 95% CI: 2.08-14.67) or the highest tertile of serum sodium (OR = 3.48, 95% CI: 1.20-10.05) had higher risks of MCI.

Conclusion

Both lower and higher serum sodium impose a significantly higher risk for MCI in older adults with frailty. This could inform the design of clinical trials and the development of guidelines and recommendations for correcting serum sodium and frailty in hospitalized older adults with chronic diseases.

The methodological challenges faced when conducting hydration research in UK care homes

BACKGROUND

The evidence base for hydration practice in care homes is underdeveloped. High-quality research is therefore needed to determine what practices support older people with dementia in drinking sufficient fluid. However, methodological developments are needed to be able to do this.

AIM

To highlight the methodological issues researchers encountered during a feasibility cluster, randomised controlled trial of ThinkDrink, a hydration care guide for people with dementia living in UK care homes.

DISCUSSION

This is a challenging area because of the complexity of recruitment, participation and data collection in care homes. Researchers must pay extra attention to rigour and quality in the design of their studies. There may be multiple challenges, so various strategies may be required.

CONCLUSION

It is important that researchers continue to reflect on rigorous approaches to develop evidence in a crucial area of care, despite these challenges.

IMPLICATIONS FOR PRACTICE

Researchers working in complex environments face a variety of challenges to complete methodologically rigorous research. It is important for researchers to be critical of research processes and data, to mitigate and overcome these challenges.

Association between blood urea nitrogen to creatinine ratio and 3-month outcome in patients with acute ischaemic stroke: a retrospective cohort study from a large healthcare system

OBJECTIVES

The blood urea nitrogen to creatinine (BUN/Cr) ratio is associated with early neurological deterioration in acute ischaemic stroke (AIS). However, the predictive value of the BUN/Cr ratio for the AIS prognosis remains unclear. Therefore, we evaluated the correlation between the BUN/Cr ratio and the 3-month outcome in patients with AIS, further testing their dose-response relationship.

DESIGN

This retrospective cohort study enrolled patients with AIS who were admitted between 1 January 2013 and 31 May 2022. Poor clinical outcome was defined as 3-month Modified Rankin Scale (mRS) >2. Cox proportional HR was used to evaluate the correlation between the BUN/Cr ratio and 3-month outcome. Restricted cubic spline and robust locally weighted regression analyses were conducted to determine the dose-response relationship between the BUN/Cr ratio and the 3-month outcome.

RESULTS

A total of 4952 eligible patients were included in the study. The patients were divided into three groups according to the tertiles of BUN/Cr ratio (T1, <0.071; T2, 0.071-0.093; and T3, >0.093). After logistic regression adjustment for demographic and clinical characteristics, the BUN/Cr ratio was found to be independently associated with the 3-month outcome in patients with AIS. The restricted cubic spline and locally regression smoothing scatterplot graph showed a strong dose-response relationship between the BUN/Cr ratio and the 3-month outcome in patients with AIS.

CONCLUSION

A dose-response relationship was observed between the BUN/Cr ratio and the 3-month outcome in patients with AIS, suggesting that the BUN/Cr ratio could serve as a reliable predictor for the AIS prognosis.

Associations Between Hydration Status and Executive Function in Middle-Aged and Older Adults: Findings from the Nationally Representative Health and Retirement Study

The purpose of the current study is to examine the association between hydration status and cognitive function in middle-aged and older adults, drawing from a large, nationally representative sample in the United States and using a comprehensive set of executive function performance measures. We utilized data from the Health and Retirement Study to conduct twelve, three-stage hierarchical regressions on hydration status and executive function performance of older adults. Cognitive performance scores on the Trail Making A, Symbol Digit Modalities, and Letter Cancellation tests significantly differed by hydration status, and these outcomes follow a curvilinear pattern, such that performance scores are lower for those who are hyper-hydrated or dehydrated relative to those who are euhydrated or near-dehydration. Our study's findings are consistent with prior studies examining the impact of serum osmolarity on cognitive performance. Specifically, a curvilinear pattern was associated with speed of processing tests of executive function. Overall, hydration status is associated with curvilinear patterns of performance on executive function measures, specifically Trail Making A, Symbol Digit Modalities, and Letter Cancellation Tests.

Nil per os in the management of oropharyngeal dysphagia-exploring the unintended consequences

Nil per os (NPO), also referred to as Nil by Mouth (NBM), is a health-related intervention of withholding food and fluids. When implemented in the context of a person with dysphagia, NPO aims to mitigate risks of aspiration. However, evidence demonstrating that NPO is beneficial as an intervention for people with dysphagia is lacking. This paper explores the theoretical and empirical evidence relating to the potential benefits and adverse effects of NPO and asserts that NPO is not a benign intervention. This paper argues for applying an ethics framework when making decisions relating to the use of NPO as an intervention for dysphagia, in particular addressing informed consent and a person's right to self-determination.

Need for a consensus definition of chronic dehydration: A scoping review

Dehydration is common in older adults and impacts their clinical outcomes. Chronic dehydration is especially important as it has been under-recognized. This scoping review aimed to summarize the available definitions of chronic dehydration to identify gaps between each definition and discuss future research needs. Four databases (Pubmed, CINAHL, Cochrane Library, Science Direct) were systematically searched for peer-reviewed articles that clearly described the definition of chronic dehydration published from inception to June 8th, 2023. Two researchers reviewed the articles independently, and any disagreement was solved upon discussion. We identified five articles with a wide range of subjects from children to older adults. Chronic dehydration was defined as a state of persistently elevated blood urea levels; weight loss ≥ 1% as a result of fluid loss; a ratio of blood urea nitrogen to creatinine > 20; serum osmolarity ≥ 295 mOsm/kg; and a dehydrated state lasting 72 hours or longer. The definition varied among studies, indicating the need to establish an international consensus on the definition of chronic dehydration.

Climate change and healthy ageing: An assessment of the impact of climate hazards on older people

Background

Climate change not only directly impacts older people's longevity but also healthy ageing, which is the process of maintaining physical and mental capacities while optimising functional abilities. The urgency to address both population ageing and climate change necessitates a rethink and assessment of the impact of climate change on older people. This includes identifying what can be done to anticipate, mitigate and adapt to climate change and engage older persons.

Methods

A review of climate change and healthy ageing forms the basis of evidence in this report. We developed a comprehensive search to assess current literature, combining terms related to ageing and climate change across four major data sets and assessing articles published up to the end of 2021.

Results

We summarised the current and future impact of climate change on older people and developed a framework identifying climate change impacts on older persons, recognising social and environmental determinants of healthy ageing. Major hazards and some key exposure pathways include extreme temperatures, wildfire, drought, flooding, storm and sea level rise, air quality, climate-sensitive infectious diseases, food and water insecurities, health and social care system displacement, migration, and relocation. Strategies to address climate change require interventions to improve systems and infrastructure to reduce vulnerability and increase resilience. As a heterogeneous group, older people's perceptions of climate change should be integrated into climate activism. Increasing climate change literacy among older people and enabling them to promote intergenerational dialogue will drive the development and implementation of equitable solutions. Pathways may operate via direct or indirect exposures, requiring longitudinal studies that enable assessment of exposures and outcomes at multiple time points, and analyses of cumulative impacts of hazards across the life course.

Conclusions

The lack of systematic reviews and primary research on the impact of most climate hazards, except for heat, on older people is apparent. Future research should include outcomes beyond mortality and morbidity and assess how older people interact with their environment by focusing on their capacities and optimising abilities for being and doing what they value.

Integration of a new technology into a work system: a case study of a smart drinking glass in French nursing homes

PURPOSE

To reduce the risk of dehydration in older adults, the French company Auxivia has developed a smart drinking glass (SDG) that can measure the amount of water drunk. The present study looked at the various work systems (WSs) designed for use of the SDG in a nursing home. The study's objectives were to (i) determine the WSs' impact on the staff's ability to comply with the device's prerequisites and ensure the device's effective use and (ii) draw up guidelines on designing work systems.

MATERIALS AND METHODS

At three nursing homes in France, two independent observers performed 9 h of observations at each site and a total of 29 interviews.

RESULTS

Decisions concerning implementation and the resulting WSs have an impact on the tasks to be performed, the tasks' inherent constraints and the use of the SDG. It is essential to take account of the sociotechnical system as a whole before integrating a technology. Ideally, the introduction of an SDG will go unnoticed by staff and residents; however, our results emphasize the value of highlighting work constraints via a human factors analysis.

CONCLUSIONS

It is essential to take account of sociotechnical WSs as a whole when integrating a technology.

The missing piece of the puzzle - The key role of the dietitian in the management of Parkinson's disease

The current paradigm for the multidisciplinary management of Parkinson's Disease (PD) does not include regular nutritional assessment despite research showing that 90 % of people living with Parkinson's (PwP) lack access to basic dietetic services. Since many non-motor symptoms such as dysphagia, constipation and orthostatic hypotension and PD complications such as weight loss and sarcopenia can be improved through dietary intervention, dietitians are a critical missing piece of the PD management puzzle. This paper serves to review the role of dietitians and medical nutrition therapy in management of PD as well as a call to action for future studies to investigate improvement of nutritional status and quality of life for all PwP.

Promoting fluid intake to increase urine volume for kidney stone prevention: Protocol for a randomized controlled efficacy trial of the sipIT intervention

BACKGROUND

Risk of kidney stone recurrence can be reduced by increasing fluid intake and urine production but most patients fail to adhere to recommended clinical guidelines. Patients have indicated that common barriers to fluid intake include a lack of thirst, forgetting to drink, and not having access to water. We developed the sipIT intervention to support patients' fluid intake with semi-automated tracking (via a mobile app, connected water bottle and a smartwatch clockface that detects drinking gestures) and provision of just-in-time text message reminders to drink when they do not meet the hourly fluid intake goal needed to achieve the recommended volume. This trial evaluates the efficacy of sipIT for increasing urine output in patients at risk for recurrence of kidney stones.

METHOD/DESIGN

Adults with a history of kidney stones and lab-verified low urine production (<2 L/day) will be randomly assigned to receive either usual care (education and encouragement to meet fluid intake guidelines) or usual care plus the sipIT intervention. The primary outcome is 24-h urine volume; secondary outcomes include urinary supersaturations, past week fluid intake, and experienced automaticity of fluid intake. Outcomes will be assessed at baseline, 1 month, 3 months, and 12 months.

CONCLUSIONS

The sipIT intervention is the first to prompt periodic fluid intake through integration of just-in-time notifications and semi-automated tracking. If sipIT is more efficacious than usual care, this intervention provides an innovative treatment option for patients needing support in meeting fluid intake guidelines for kidney stone prevention.

Diet and skin health: The good and the bad

The skin protects humans from pathogens, ultraviolet light, chemicals, mechanical, thermal, and physical injuries as well as hazardous substances. Other important roles of the skin include the regulation of several important physiological processes of the body, sensing stimuli, synthesis of vitamin D, and immune surveillance. However, aging, diseases and environmental conditions significantly change the skin's behavior and functioning. The treatment and prevention strategies for various skin diseases especially photoaging usually include topical treatment with medical cosmetology, active ingredients and other physical means of photoprotection. In recent times, however, there is an increasing consciousness about the role of diet and nutrition in skin health with certain dietary components emerging as an adequate alternative approach to alleviate and prevent both endogenous and exogenous aging symptoms. Therefore, this narrative review uniquely discusses the basic structure of the skin and also addresses common dermatological signs of damaged skin, the impacts of unhealthy diet habits on the skin, and the beneficial effects of some healthy diet habits on skin health. The information and data were collated from various literature databases and resources such as Science Direct, PubMed, Wiley, Springer, Taylor and Francis, Inflibnet, Scopus, Google, and Google Scholar using relevant keywords Medical Subject Headings (MeSH). In conclusion, diet and nutrition play essential roles in the optimum functioning of the human body, including the skin. Thus, certain diet habits such as less water intake, high-fat diet, refined sugar, and certain food additives are unhealthy and harmful to the skin while alternative healthy diet habits such as adequate water intake; consumption of antioxidants and polyphenolic-rich fruits, vegetables, nuts, and legumes; a low glycemic index diet; probiotics; and phytoestrogens should be adopted to enhance skin health.

The prevalence, risk factors and clinical implications of dehydration in older patients: a cross-sectional study

OBJECTIVES

Adequate hydration is essential for the maintenance of physiological functions. Older adults may not be able to maintain adequate hydration, which is often not recognized. Our aim was to investigate the prevalence, risk factors and clinical implications of dehydration in older adults.

METHODS

This cross-sectional study included 964 older adults in one geriatric outpatient clinic in Turkey. Dehydration was defined as a calculated [1,86 × (Na+K)+1,15×glucose+urea +14] plasma osmolarity of ≥ 295 mOsm/L. Clinical characteristics and measures of comprehensive geriatric assessments of patients with dehydration and normohydration were compared. Predictors of dehydration were assessed using logistic regression analysis.

RESULTS

Mean age was 79.9 ± 7.7 years, (71.7% female). The prevalence of dehydration was 31%. Female patients, diabetes mellitus (DM), chronic renal failure (CKD), a higher risk of falling (based on Timed Up and Go test), probable sarcopenia, dependence based on basic and instrumental daily living activities (BADL and IADL) were more common in the dehydrated group (p < 0.05). After adjusting for age and gender, dependency on BADL and IADL, the risk of falling were still higher in the dehydrated group (p < 0.05). There were significant relationships between dehydration and risk of falling (OR 1.38, 95% CI 1.00-1.90; p < 0.05), after adjustment for age, gender, DM, CKD.

CONCLUSION

Dehydration is common among older adults and is associated with a dependency, probable sarcopenia, and an increased risk of falling. Screening for dehydration and taking preventive measures may be beneficial in avoiding the negative consequences associated with dehydration.

Roles, mutual expectations and needs for improvement in the care of residents with (a risk of) dehydration: A qualitative study

AIM

Examining the perspectives of formal and informal caregivers and residents on roles, mutual expectations and needs for improvement in the care for residents with (a risk of) dehydration.

DESIGN

Qualitative study.

METHODS

Semi-structured interviews with 16 care professionals, three residents and three informal caregivers were conducted between October and November 2021. A thematic analysis was performed on the interviews.

RESULTS

Three topic summaries contributed to a comprehensive view on the care for residents with (a risk of) dehydration: role content, mutual expectations and needs for improvement. Many overlapping activities were found among care professionals, informal caregivers and allied care staff. While nursing staff and informal caregivers are essential in observing changes in the health status of residents, and medical staff in diagnosing and treating dehydration, the role of residents remains limited. Conflicting expectations emerged regarding, for example, the level of involvement of the resident and communication. Barriers to multidisciplinary collaboration were highlighted, including little structural involvement of allied care staff, limited insight into each other's expertise and poor communication between formal and informal caregivers. Seven areas for improvement emerged: awareness, resident profile, knowledge and expertise, treatment, monitoring and tools, working conditions and multidisciplinary working.

CONCLUSION

In general, many formal and informal caregivers are involved in the care of residents with (a risk of) dehydration. They depend on each other's observations, information and expertise which requires an interprofessional approach with specific attention to adequate prevention. For this, educational interventions focused on hydration care should be a core element in professional development programs of nursing homes and vocational training of future care professionals.

IMPACT

The care for residents with (a risk of) dehydration has multiple points for improvement. To be able to adequately address dehydration, it is essential for formal and informal caregivers and residents to address these barriers in clinical practice.

REPORTING METHOD

In writing this manuscript, the EQUATOR guidelines (reporting method SRQR) have been adhered to.

PATIENT OR PUBLIC CONTRIBUTION

No patient or public contribution.

The Amount of Fluid Intake among Pregnant Women in China Increases with Pregnancy Progression: A Prospective Cohort Study

Fluid intake and hydration status during pregnancy may have influences on maternal and infant health. However, few studies have recorded and analyzed total fluid intake (TFI) levels during the whole pregnancy. This study mainly aimed to investigate the TFI levels of pregnant women in three trimesters, and further to assess their hydration status. The relationships of TFI and hydration status were also analyzed. A convenience sampling method was used to recruit pregnant women from the Haikou Maternity and Child Health Hospital in China in this prospective cohort study. A 7-day 24 h fluid intake questionnaire was used for recording the fluid intake of the participants in their three trimesters. Fasting blood samples and first morning urine samples were also collected and tested. Hydration status was evaluated using urine osmolality. Finally, 142 pregnant women completed the study. The median TFIs in the first, second, and third trimesters were 1336, 1477, and 1584 mL, respectively. The TFI levels increased with pregnancy progression (χ2 = 134.155, p < 0.05). Out of 142 participants, 100.0%, 97.2%, and 85.2% of participants did not reach the recommendation amount for an adequate TFI among Chinese pregnant women in the three trimesters, respectively (χ2 = 29.840, p < 0.05). Plain water was the main source of fluid intake, accounting for 92.0%, 94.2%, and 93.4% of TFI, respectively. The median values of dairy product intake were 61, 57, and 59 mL in the three trimesters. The frequency of participants without an optimal hydration status in the three trimesters was 71.8%, 76.1%, and 83.1%, respectively (χ2 = 29.909, p < 0.05). The participants of each trimester were divided into four groups according to quartiles of TFI, including participants with a lower fluid intake (LFI1 and LFI2) and higher fluid intake (HFI1 and HFI2). As the TFI values increased from the LFI1 group to the HFI2 group, the urine osmolality decreased (all p < 0.05). Moderate-intensity negative correlations were found between urine osmolality, hydration status, and TFI (all p < 0.05). It is suggested that fluid intake strategies should be promoted and health education should be conducted to improve the hydration status of pregnant women.

Person-centred oral hydration care for older people with dementia admitted to acute hospital wards: Empirical research qualitative

AIMS AND OBJECTIVES

To conduct an in-depth exploration of oral hydration care provided to people living with dementia in acute hospital wards, using a person-centred care framework.

BACKGROUND

Oral hydration care is an important, yet rarely explored aspect of fundamental care for people with dementia admitted to acute hospitals. Using person-centred care as a conceptual framework we investigated how oral hydration care is delivered for people living with dementia in acute hospital wards.

DESIGN

A qualitative, multiple-case study. The cases were three acute wards in one hospital.

METHODS

Direct observation of care for 13 people with dementia (132 h), semistructured interviews with ward staff (n = 28), ward leaders (n = 4), organisational leaders (n = 5), people with dementia (n = 6), their relatives (n = 5), documentary analysis of clinical inpatient records (n = 26) and relevant hospital policies. Data were analysed using framework analysis.

RESULTS

Four themes were identified: (1) The acute hospital: oral hydration is obscured and not prioritised (2) Overshadowing of oral hydration at ward level (3) Siloed nature of hydration roles (4) Strategies for, and barriers to, delivering person-centred oral hydration care.

CONCLUSIONS

This study combines the concept of person-centred care and oral hydration care for people living with dementia admitted to acute hospital wards, demonstrating that person-centred hydration care was complex and not prioritised.

RELEVANCE TO CLINICAL PRACTICE

Nurses should consider means of improving prioritisation and cohesive delivery of person-centred hydration care in acute hospital wards.

Diagnosis and treatment of dehydration after stroke: A synthesis of existing evidence

Dehydration after stroke is associated with poor health outcomes, increased mortality, and poses a significant economic burden to health services. Yet research suggests that monitoring and assessment of hydration status is not routinely undertaken. In this commentary, we critically appraise a systematic review which aimed to synthesise the existing evidence regarding diagnosis and treatment of dehydration after stroke. The review discusses common measures of dehydration, describes studies evaluating rehydration treatments, and highlights the link between dehydration and poorer health outcomes in both human and animal studies. The reviewers suggest, future research should focus on determining a single, validated, objective measure to clinically diagnose dehydration in stroke patients. Research designs should include clearly defined patient characteristics, type and severity of stroke, and type and time point of dehydration measurement, to enable comparison between studies. Management of hydration status is a crucial element of acute stroke care which should be routinely practiced.

Educational Needs for Coaching Judo in Older Adults: The EdJCO Focus Groups

Judo coaches are urged to develop specific competencies and skills for addressing the special needs of older practitioners. Thus, the purpose of this study was to investigate the experts' opinions on judo training in late adulthood to develop sound educational programs for coaches of older judo practitioners. Overall, eighty-eight experts from an international consortium of judo and educational partners participated in national focus groups. During the focus groups, experts discussed five themes and generated statements pertinent to educate coaches to support older judo practitioners (e.g., benefits; necessary knowledge; risks; training groups definition; tools; and tests for monitoring training plans). The initial list of 262 statements was synthesized, validated, analyzed, and organized into a final list of 55 statements and six macro-areas: aging process (n = 10); safety and first aid (n = 6); physiology and fitness (n = 12); psychology and mental health (n = 11); organization and environment (n = 5); adapted judo teaching and training (n = 11). The present international eminence-based study, harmonizing diverse intercultural perspectives, highlighted the specific needs of older judo practitioners. The results of this study will contribute to the structure of a sound educational program for coaches of older judo practitioners to enhance the quality of older adults' sports experiences by linking safety, enjoyment, social interactions, and learning principles.

"Diet for the prevention and management of sarcopenia"

Sarcopenia is a geriatric condition characterized by a progressive loss of skeletal muscle mass and strength, with an increased risk of adverse health outcomes (e.g., falls, disability, institutionalization, reduced quality of life, mortality). Pharmacological remedies are currently unavailable for preventing the development of sarcopenia, halting its progression, or impeding its negative health outcomes. The most effective strategies to contrast sarcopenia rely on the adoption of healthier lifestyle behaviors, including adherence to high-quality diets and regular physical activity. In this review, the role of nutrition in the prevention and management of sarcopenia is summarized. Special attention is given to current "blockbuster" dietary regimes and agents used to counteract age-related muscle wasting, together with their putative mechanisms of action. Issues related to the design and implementation of effective nutritional strategies are discussed, with a focus on unanswered questions on the most appropriate timing of nutritional interventions to preserve muscle health and function into old age. A brief description is also provided on new technologies that can facilitate the development and implementation of personalized nutrition plans to contrast sarcopenia.

Noninvasive Monitoring to Detect Dehydration: Are We There Yet?

The need for hydration monitoring is significant, especially for the very young and elderly populations who are more vulnerable to becoming dehydrated and suffering from the effects that dehydration brings. This need has been among the drivers of considerable effort in the academic and commercial sectors to provide a means for monitoring hydration status, with a special interest in doing so outside the hospital or clinical setting. This review of emerging technologies provides an overview of many technology approaches that, on a theoretical basis, have sensitivity to water and are feasible as a routine measurement. We review the evidence of technical validation and of their use in humans. Finally, we highlight the essential need for these technologies to be rigorously evaluated for their diagnostic potential, as a necessary step to meet the need for hydration monitoring outside of the clinical environment.

Ex vivo LPS-stimulated cytokine production is associated with hydration status in community-dwelling middle-to-older-aged adults

PURPOSE

Suboptimal hydration has been linked to a variety of adverse health outcomes. Few studies have examined the impact of hydration status on immune function, a plausible physiological mechanism underlying these associations. Therefore, we tested how variation in hydration status was associated with circulating pro-inflammatory cytokine levels and ex vivo lipopolysaccharide (LPS)-stimulated pro-inflammatory cytokine production.

METHODS

Blood samples were obtained from a community sample of healthy middle-to-older-aged adults (N = 72). These samples were used to assess serum osmolality, a biomarker of hydration status, and markers of immune function including circulating pro-inflammatory cytokines and stimulated pro-inflammatory cytokine production after 4 and 24 h of incubation with LPS. Multiple linear regressions were used to test the association between serum osmolality (as a continuous variable) and markers of immune function at baseline and after 4 and 24 h adjusting for age, sex, and BMI. These models were re-estimated with serum osmolality dichotomized at the cut-off for dehydration (> 300 mOsm/kg).

RESULTS

While not significantly associated with circulating cytokines (B = - 0.03, p = 0.09), serum osmolality was negatively associated with both 4 h (B = - 0.05, p = 0.048) and 24 h (B = - 0.05, p = 0.03) stimulated cytokine production when controlling for age, sex, and BMI. Similarly, dehydration was associated with significantly lower cytokine production at both 4 h (B = - 0.54, p = 0.02) and 24 h (B = - 0.51, p = 0.02) compared to adequate hydration.

CONCLUSION

These findings suggest that dehydration may be associated with suppressed immune function in generally healthy middle-to-older aged community-dwelling adults. Further longitudinal research is needed to more clearly define the role of hydration in immune function.

Dehydration and hospital-associated disability in acute hospitalized older adults

PURPOSE

Dehydration is highly prevalent in hospitalized older adults and has been linked to poor outcomes. It is considered a modifiable factor, so early identification and intervention may avoid adverse events and improve quality of life after discharge. Hospital-associated disability (HAD) is known to be a poor prognostic factor and can be categorized into mobility impairment and self-care impairment in setting goals for management. Few studies have directly examined the association between dehydration and HAD and therefore here we examined whether dehydration is a predictor of HAD categorized into mobility and self-care impairment among acute hospitalized older adults.

METHODS

Patients aged 65 years or older who were admitted to the geriatric ward of an acute hospital were recruited for this prospective cohort study. Estimated serum osmolarity > 300 mOsm/kg was defined as current dehydration. HAD was assessed between baseline and discharge and at 3 months after discharge, and was evaluated separately for mobility and self-care impairments.

RESULTS

In total, 192 patients (mean age, 84.7 years; male, 41.1%; dehydration, 31.3%) were analyzed. The occurrence of HAD was significantly higher in the dehydrated group than in the non-dehydrated group (42.4% vs 26.5%) from baseline to 3 months after discharge. In multiple logistic regression analysis, dehydration was significantly associated with HAD in self-care from baseline to 3 months after discharge (odds ratio, 2.25; 95% confidence interval, 1.03-4.94).

CONCLUSIONS

Dehydration could predict the occurrence of HAD in acute hospitalized older adults. A multifaceted approach may be necessary to improve the management of dehydration in these patients.

Urinary Hydration Biomarkers and Water Sources in Older Adults with Neurocognitive Disorder

The risk of dehydration in older adults with neurocognitive disorder (NCD) is controversial. The purpose of this study was to assess hydration status, its determinants, and water intake sources in older adults with NCD. A sample of 30 participants (≥60 years) was included. Sociodemographic, clinical data and one 24-h urine sample were collected. Urinary osmolality, sodium, potassium, volume, and creatinine were quantified. Inadequate hydration status corresponded to urine osmolality > 500 mOsm/Kg, or a negative Free Water Reserve (FWR). Two 24-h food recalls were used to assess dietary intake and water sources. The adequacy of total water intake (TWI) was estimated according to EFSA. The contribution of food and beverages to TWI was calculated, and their associations with the urinary osmolality median were tested. Of the total number of participants, 30% were classified as having inadequate hydration status, with no differences between sexes. Regarding TWI, 68.4% of women and 77.8% of men did not reach the reference values. Water (23%), followed by soup (17%), contributed the most to TWI, while vegetables (2%) and alcoholic/other beverages (3%) contributed the least. According to the median urinary osmolality, there was no significant difference in sociodemographic/clinical characteristics. It is critical not to overlook hydration in this vulnerable population.

Dehydration in geriatrics: consequences and practical guidelines

PURPOSE OF REVIEW

Geriatric dehydration is a widespread and under recognized problem. The purpose of this review was to examine the latest evidence regarding geriatric dehydration and provide practical guidance for health professionals.

RECENT FINDINGS

This review covers evidence from the past 2 years and shows that geriatric dehydration is not benign and is associated with significant personal distress, as well as negative economic and health system consequences. New guidance on nutrition and hydration in the elderly recommend against the use of skin turgor, dry mouth, urine colour or specific gravity to determine hydration status in the elderly. Instead, serum osmolality is considered the gold standard.

SUMMARY

Strategies to prevent and manage geriatric dehydration should differ depending on aetiology (low intake, volume depletion or both). Widespread dissemination and implementation of innovative strategies that target improved access to fluids, and systems change to enable rapid and accurate identification and treatment are required.

Dehydration risk factors and outcomes in older people in rural areas

Objective: To determine the risk factors for dehydration in elderly people in one of Elbehira Governorate’s villages.

Methods: A descriptive correlational design was utilized in this study. The study was conducted at Elnemaria village, Markaz Abo Elmatamir, Elbehira Governorate, Egypt. Data were collected using 3 tools: a structured interviewing questionnaire, a dehydration knowledge questionnaire, and a dehydration risk appraisal checklist.

Results: The study found that 29.5% of the participants were aged between 65 and 70. Males constituted 51% of the study participants. The majority of the study participants regularly took anti-acids, anti-inflammatory drugs, and diuretics. Among the elderlies comprising the respondents, 40% had a low level of knowledge regarding dehydration. More than half of the study subjects were at moderate risk for dehydration.

Conclusions: The study showed that half of the participants had diabetes and a medium level of information about dehydration. The study also showed in general that the elderly in the village are exposed to a moderate dehydration rate, and there is also a strong relationship between taking different types of medication and the occurrence of dehydration.

Preoperative dehydration identified by serum calculated osmolarity is associated with severe frailty in patients with hip fracture

BACKGROUND & AIMS

Preoperative dehydration is a well-known predictor of in-hospital complications and poor functional outcomes in older patients with hip fractures. In an orthopedic and geriatric cooperative setting, we aimed to investigate whether preoperative dehydration was associated with frailty, prolonged hospital stays and short-term mortality in older patients with hip fractures.

METHODS

This retrospective cohort study was conducted in a Danish university hospital. The study population consisted of patients 65+ years surgically treated for hip fracture. Dehydration was defined as serum calculated osmolarity above 295 mmol/L. Outcomes were frailty at discharge measured by the Multidimensional Prognostic Index, hospital stay of 7 days or more and 90-day mortality.

RESULTS

In total, 214 patients were consecutively included in the study from March 11, 2018, to August 31, 2020. The mean age was 81.2 (SD: 7.6) and 69% of the patients were women. The prevalence of preoperative dehydration was 40%. It was associated with severe frailty (Odds Ratio (OR): 2.08 [95% confidence interval (CI): 1.11-3.90]; p = 0.02) and prolonged hospital stay (OR: 2.28 [95% CI: 1.29-4.04]; p = 0.02). Seven percent died when dehydrated compared to 5% in the non-dehydrated (p = 0.91).

CONCLUSION

Prevalence of preoperative dehydration is high among older patients with hip fractures and is associated with severe frailty and length of hospital stay. Systematic screening for dehydration on admission is advisable and may contribute to more adequate fluid management in the perioperative phase.

Narrative Review of Low-Intake Dehydration in Older Adults

Low-intake dehydration is a common and often chronic condition in older adults. Adverse health outcomes associated with low-intake dehydration in older adults include poorer cognitive performance, reduced quality of life, worsened course of illness and recovery, and a high number of unplanned hospital admissions and increased mortality. The subjective methods to assess (risk of) dehydration are not reliable, and the evidence about preventive measures are also limited. So is the knowledge about the optimal intake of beverages per day. This narrative review presents the state of the science on the role of low intake hydration in older adults. Despite its simple cause—the inadequate intake of beverages—low-intake dehydration appears to be a very complex problem to address and much more research is needed in the area. Based on the existing evidence, it seems necessary to take setting specific differences and individual problems and needs into account to tackle dehydration in older adults. Further, it is necessary to increase awareness of the prevalence and severity of low-intake dehydration among older adults and in nursing staff in care homes and hospitals as well as among caregivers of older adults living at home.