Could symptom burden predict subsequent healthcare use in patients with end stage kidney disease on hemodialysis care? A prospective, preliminary study.

Context: Patients treated with maintenance hemodialysis experience significant symptom burden resulting in impaired quality of life. However, the association of patient reported symptom burden and the risk of healthcare use for patients with end stage kidney disease on hemodialysis has not been fully explored.Objectives: To investigate if higher symptom burden, assessed by the Edmonton Symptom Assessment System-revised (ESASr), is associated with increased healthcare use in patients with end stage kidney disease on hemodialysis.Methods: Prospective, single-center, study of adult patients on HD. Participants completed the ESASr questionnaire at enrollment. Baseline demographic, clinical information as well as healthcare use events during the 12-month following enrollment were extracted from medical records. The association between symptom burden and healthcare use was examined with a multivariable adjusted negative binomial model.Results: Mean (SD) age of the 80 participants was 71 (13) years, 56% diabetic, and 70% male. The median (IQR) dialysis vintage was 2 (1-4) years. In multivariable adjusted models, higher global [incident rate ratio (IRR) 1.02, 95% confidence interval (CI) 1.00-1.04, p = .025] and physical symptom burden score [IRR 1.03, CI 1.00-1.05, p = .034], but not emotional symptom burden score [IRR 1.05, CI 1.00-1.10, p = .052] predicted higher subsequent healthcare use.Conclusions: Our preliminary evidence suggests that higher symptom burden, assessed by ESASr may predict higher risk of healthcare use amongst patients with end stage kidney disease on hemodialysis. Future studies need to confirm the findings of this preliminary study and to assess the utility of ESASr for systematic symptom screening.

Mind-Body Interventions in Late-Life Mental Illnesses and Cognitive Disorders: A Narrative Review.

BACKGROUND: Current pharmacological treatments and psychotherapeutic approaches often have adverse effects or are ineffective in late-life cognitive and mental illnesses. Mind-body interventions offer a holistic approach and are of interest because of potential patient acceptability and scalability. OBJECTIVE: To synthesize current evidence on mind-body interventions in treating or preventing mental illnesses and cognitive disorders in older adults. SEARCH STRATEGY: A search was conducted using Ovid MEDLINE, EMBASE, and PsycINFO articles published from 1993 to 2017. SELECTION CRITERIA: 1) Randomized controlled trials, 2) involving older adults (>60 years old), 3) suffering from mental illness or cognitive decline, 4) comparing mind-body interventions with a control group. Mind-body interventions included: imagery, meditation, prayer, autogenic training, tai chi & variants, and yoga. Control group included: health education, other non-pharmacological interventions, treatment as usual, or no treatment at all. DATA COLLECTION AND ANALYSIS: Data included number of patients, age, psychiatric diagnoses, type of intervention, frequency andduration, control conditions, outcomes measures and treatment results. RESULTS: 3916 articles were reviewed and ten met inclusion criteria. Six were on Tai Chi and four assessed meditation-based therapies. Clinically significant improvement in depressive and anxiety symptoms were reported, as well as improvement insomedomains of cognition and reduced risk of cognitive deterioration. CONCLUSION: There is increasing evidence that mind-body interventions may potentially be useful in the treatment or prevention of geriatric mental illnesses and cognitive disorders. There are important methodological limitations of the current literature such as small sample sizes, heterogeneous study populations, and varying clinical outcomes.

Early Clinical Exposure to Geriatric Psychiatry and Medical Students' Interest in Caring for Older Adults: A Randomized Controlled Trial.

OBJECTIVE: In the next 25 years, the population aged 65 and older will nearly double in many countries, with few new doctors wishing to care for older adults. The authors hypothesize that early clinical exposure to elderly patient care could increase student interest in caring for older adults during their future career. METHODS: The authors conducted a pragmatic medical education randomized controlled trial (RCT) at the Jewish General Hospital and the Douglas Mental Health Institute, McGill University, in Montreal, Canada. Third-year medical students undergoing their mandatory 16-week half-time clerkship rotation in psychiatry were randomly assigned to the equivalent of 2-4 weeks of full-time exposure to clinical geriatric psychiatry (n = 84). RESULTS: Being randomly assigned to geriatric psychiatry exposure (n = 44 of 84) was associated with increased "comfort in working with geriatric patients and their families" at 16-week follow-up (59.1% versus 37.5%, χ2 (1) = 3.9; p = 0.05). However, there was no significant association found between geriatric psychiatry exposure and change "in interest in caring for older adults," or change in "interest in becoming a geriatric psychiatrist." CONCLUSION: The results of this pragmatic education RCT suggest that exposing third-year medical students to 2-4 weeks of geriatric psychiatry did not increase their interest to care for older adults or become a geriatric psychiatrist. However, it did increase their comfort level in working with older adults and their families. However, more research is necessary to identify potential interventions that could inspire and increase medical student interest in caring for older adults as part of their future careers.

Psychosocial Distress and Health Service Utilization in Patients Undergoing Hemodialysis: A Prospective Study.

BACKGROUND: End-stage renal disease is associated with significant morbidity, high-symptom burden, and health care use. Studies have not yet assessed psychosocial distress and health care utilization in this population. OBJECTIVE: This study examines psychosocial distress and its association with hospitalization and emergency room (ER) visits in patients on maintenance hemodialysis (HD). METHODS: The Distress Assessment and Response Tool (DART) was administered to 80 adults on HD in a single treatment center. The DART assessed for anxiety, depression, and social distress. Health care utilization data were extracted prospectively from electronic medical charts. The time between psychosocial distress and hospitalization or ER visits during 12-month follow-up was examined using Cox proportional hazard models. RESULTS: Overall 46% of the sample reported psychosocial distress, with 33% screening above the threshold for depression, 14% for anxiety, and 36% for significant social distress. In multivariable regression adjusting for age, sex, and comorbidity, the presence of psychosocial distress was associated with shorter time to hospitalization (hazard ratio: 2.4 [1.1, 5.0], p = 0.03) during 12-month follow-up. Psychosocial distress was not significantly associated with ER visits in either univariable (hazard ratio: 1.3 [0.7, 2.3], p = 0.5) or multivariable (hazard ratio: 1.4 [0.8, 2.6], p = 0.3) analyses. CONCLUSION: Psychosocial distress is frequent in patients undergoing maintenance HD and is associated with shorter time to hospitalization. Future longitudinal studies should examine if health service use can be reduced through routine distress screening and psychosocial distress intervention.

End-of-Life Care Preferences in Patients with Severe and Persistent Mental Illness and Chronic Medical Conditions: A Comparative Cross-Sectional Study.

OBJECTIVES: Physicians rarely engage severe and persistent mental illness (SPMI) patients in end-of-life care discussion despite an increased risk of debilitating medical illnesses and mortality. Access to quality palliative care and medical assistance in dying (MAID) has become a priority in Canada and many jurisdictions. In this study, we compared SPMI and chronic medically ill (CMI) patients' end-of-life care preferences and comfort level with end-of-life care discussion, and identified potential predictors of interest in MAID. DESIGN: Comparative cross-sectional study. SETTING: Hospital-based. PARTICIPANTS: We recruited 106 SPMI and 95 CMI patients at the Jewish General Hospital, Canada. Patients aged ≥40 years, without severe cognitive impairment, able to communicate in English or French and provide written informed consent were included. MEASUREMENTS: Attitudes towards pain management, palliative sedation, MAID, and artificial life support were collected with the Health Care Preferences Questionnaire. Adjusted odd ratios (aOR) were calculated for each end-of-life care intervention. Comfort with discussion was rated on a Likert scale. A stepwise regression analysis was performed to identify predictors of interest in MAID. RESULTS: SPMI was not correlated to any end-of-life care intervention, except for MAID where SPMI patients were less likely to support its use (aOR: 0.48, 95% CI: 0.25-0.94, p = 0.03). Religiosity was also correlated with interest in MAID (aOR: 0.14, 95% CI: 0.06-0.31, p < 0.001). Patients in both groups were comfortable talking about end-of-life care. CONCLUSIONS: SPMI patients are able to voice their end-of-life care preferences, and contrary to some fears, do not want MAID more than CMI patients.

Mindfulness in severe and persistent mental illness: a systematic review.

OBJECTIVE: This systematic review summarises the current state of research on mindfulness in SPMI, given the pressing need to provide alternative, scalable and cost-effective treatment modalities for patients with severe and persistent mental illness (SPMI). METHODS: Articles included mindfulness-based interventions for SPMI. Excluded articles included qualitative studies, acceptance and compassion therapies, case reports and reviews. Studies were identified by searching the databases Medline, Embase and PsycINFO. RESULTS: Six randomised controlled trials, seven prospective studies and one retrospective study were identified. Clinical improvements were observed on psychotic symptoms, and on improvements of depression symptoms, cognition, mindfulness, psycho-social and vocational factors. CONCLUSIONS: Findings suggest that mindfulness is feasible for individuals with SPMI, and displays potential benefits in outcomes aside from psychotic symptoms. The effects of mindfulness in psychotic symptoms needs further investigation in larger definitive studies using methodological rigor and thorough assessments of other psychiatric populations who are also representative of SPMI.

Mobile Health Technology in Late-Life Mental Illness: A Focused Literature Review.

OBJECTIVE: In an era of rising geriatric mental health care needs worldwide, technological advances can help address care needs in a cost-effective fashion. Our objective in this review was to assess whether mobile health technology, such as tablets and smartphones, are feasible to use in patients with late-life mental and cognitive disorders, as well as whether they were generally reliable modes of mental health/cognitive assessment. METHODS: We performed a focused literature review of MEDLINE, PsychInfo, and Embase databases, including papers specifically assessing the implementation of mobile health technologies: electronic tablets (e.g., iPad), smartphones, and other mobile computerized equipment in older adults (age ≥65 years) diagnosed with or at risk of a mental and/or cognitive disorder. RESULTS: A total of 2,079 records were assessed, of which 7 papers were of direct relevance. Studies investigated a broad variety of mobile health technologies. Almost all examined samples with dementia/cognitive dysfunction or at risk for those disorders. All studies exclusively examined the use of mobile health technologies for the assessment of cognitive and or mental illness symptoms or disorders. None of the studies reported participants having any difficulties using the mobile health technology assessments and overall reliability was similar to paper-and-pencil modes of assessment. CONCLUSION: Overall, mobile health technologies were found to be feasible by patients and had promising reliability for the assessment of cognitive and mental illness domains in older adults. Future clinical trials will be necessary to assess whether portable communication interventions (e.g., symptom tracking) can improve geriatric mental health outcomes.

Health Canada Warning on Citalopram and Escitalopram--Its Effects on Prescribing in Consultation-Liaison Psychiatry.

BACKGROUND: Reports have suggested that citalopram and escitalopram may prolong the QTc interval, leading Health Canada to issue a warning to limit their dosages in 2012. Little is known about the effects of this warning and similar ones (e.g., by the Food and Drug Administration) on antidepressant prescribing in inpatients with acute medical illness, who are theoretically at high risk of QTc prolongation. The main objective of our study is to examine the effect of the Health Canada warning on citalopram/escitalopram prescribing patterns in the consultation-liaison (C-L) psychiatry setting. METHODS: We performed a retrospective cohort study including 275 randomly selected inpatients with medical illness assessed by the psychiatric C-L team of a large Canadian academic hospital between 2008 and 2014. We grouped patients based on whether they were assessed by the C-L team before or after the citalopram Health Canada warning. Our primary outcome was change in citalopram/escitalopram prescribing patterns. RESULTS: We found that of patients seen before the Health Canada warning, a significantly higher number were prescribed citalopram/escitalopram (44.1% vs. 22.3%, χ(2) = 14.835, p < 0.001), even after controlling for confounders. However, the percentage of patients using a citalopram/escitalopram dose exceeding those recommended by the Health Canada warning was similar in both groups (8.9% vs. 12.1%, χ(2) = 0.233, p = 0.63). CONCLUSIONS: Overall, C-L psychiatrists were less likely to prescribe citalopram/escitalopram following the Health Canada warning, which did not translate into safer dosing. Clinicians should not avoid prescribing citalopram/escitalopram appropriately in medically vulnerable inpatients when benefits outweigh disadvantages.

Tolerability and suitability of brief group mindfulness-oriented interventions in psychiatric inpatients: a pilot study.

OBJECTIVE: Mindfulness-oriented therapies have a positive impact on patients' overall well-being and alleviate many psychiatric conditions. However, little is known about their use in people with severe mental illness. We aimed to identify which clinical and sociodemographic factors are associated with suitability/tolerability of a brief group mindfulness-oriented therapy. METHODS: This retrospective study examines pre-/post-data from 40 psychiatric inpatients who underwent one session of a 10-min mindfulness-oriented group intervention between January and March 2014. The main outcome was 'suitability for and tolerating the brief mindfulness-oriented group intervention'. We assessed potential correlates of the main outcome, including female gender, shorter hospitalisation, the absence of psychosis and good pre-morbid functioning. RESULTS: The intervention was well tolerated (92.5%) and 50% of patients met both of our relatively stringent suitability and tolerability criteria. Sociodemographic and clinical variables were not associated with suitability/tolerability. Tai chi was the most suitable/tolerable compared to body scan and mindful eating (76.5% vs. 35.7% vs. 22.2%, Fisher's exact p = 0.01, Bonferroni p < 0.05). CONCLUSIONS: Brief group mindfulness therapy interventions are very well tolerated and often suitable for acutely hospitalised psychiatric inpatients, including those with acute psychosis. Mindfulness-oriented intervention with an active component (e.g., tai chi, mindful walking) may potentially be best suited for this population.

Predictors of psychiatric re-hospitalization in older adults with severe mental illness.

OBJECTIVE: Many patients with severe recurrent mental illness are approaching late life; however, little is known about psychiatric re-hospitalization in this population. Our objective was to identify predictors of psychiatric re-hospitalization. METHODS: This was a retrospective cohort study of all 226 geriatric patients (age ≥65 years) admitted to a tertiary care Canadian inpatient psychiatric unit between 2003 and 2008. The main outcome was psychiatric re-hospitalization in 5-year follow-up post-discharge (e.g. 2008-2013 if a patient had been first admitted in 2008). Multivariate Cox regression analyses were used to identify potential predictors of re-hospitalization. RESULTS: Over 5-year follow-up, 32.3% (73/226) required psychiatric re-hospitalization. Prior lifetime history of psychiatric admission, currently living in a supervised setting and bipolar disorder diagnosis all independently predicted a lower time to psychiatric re-hospitalization (HRs > 2.0, p < 0.05). CONCLUSIONS: The rate of psychiatric re-hospitalization is high in older adults admitted for severe mental illness. Clinicians should be aware of the especially high rates of re-hospitalization in geriatric psychiatric inpatients with bipolar disorder, previous psychiatric admissions, or those living in a supervised setting. Future research could investigate approaches to prevent psychiatric re-hospitalization in these vulnerable sub-populations.

Diabetes mellitus onset in geriatric patients: does long-term atypical antipsychotic exposure increase risk?

BACKGROUND: Diabetes mellitus (DM) in common in adults using psychotropic medications. However, it remains largely unknown whether there is an additional risk of diabetes mellitus (DM) in elderly psychiatric outpatients, particularly those with long-term exposure to atypical antipsychotics (AP). METHODS: In this retrospective longitudinal study, 61 atypical AP-exposed and 64 atypical AP-unexposed geriatric psychiatric patients were compared to a group of 200 psychotropic-naïve controls. Our main composite outcome was diabetes incidence over a 4-year period, defined by fasting blood glucose ≥ 7.0 mmol/L or a new-onset oral hypoglycaemic or insulin prescription during the 4-year period. RESULTS: The 4-year incidence of DM did not differ significantly between groups: 12.3%, 6.7%, and 11.9% in the atypical AP-exposed, atypical AP-unexposed, and control groups, respectively (χ(2) = 1.40, P = 0.50). Depression and antidepressant, cholinesterase inhibitor, and valproate use were independently associated with increases in fasting glucose. However, hyperglycaemia and hypoglycaemic prescriptions were not more common in geriatric psychiatric patients. CONCLUSIONS: DM does not appear to be more common in geriatric psychiatric patients than similarly aged controls and is not more common in atypical AP users. However, depression and antidepressant, cholinesterase inhibitor, and valproate use may increase fasting glucose levels, and the clinical significance of this warrants further investigation. Nonetheless, given the rates of untreated and undertreated fasting hyperglycaemia in both our geriatric psychiatric and control samples (>10% of all patients), we recommend regular screening for DM in these populations.

Is environmental temperature related to renal symptoms, serum lithium levels, and other laboratory test results in current lithium users?

OBJECTIVE: Lithium continues to be an important mood disorder treatment. Although patients exposed to higher environmental temperatures may have serum lithium level elevations due to dehydration, there is conflicting data in the literature. In addition, no study has assessed the association between temperature and other renal laboratory tests and symptoms in lithium users. METHODS: This is a cross-sectional analysis of 63 current lithium users who participated in the McGill Geriatric Lithium-induced Diabetes Insipidus Clinical Study. The relationship between mean daily temperature with diabetes insipidus symptoms, glomerular filtration rate, urine osmolality, serum sodium, lithium level, and lithium dose-level ratio was assessed. RESULTS: Although a higher temperature on the day of laboratory testing trended toward being independently associated with a lower lithium dose-level ratio (Beta = -0.17, p = 0.08), this was not found when using a dichotomous measure of temperature (T > 20°C). No association was observed between temperature and other renal parameters. CONCLUSIONS: The association of temperature with lithium levels, renal symptoms, and laboratory tests appears to be of relatively little clinical importance in lithium users in temperate climates. However, future research should re-examine patients living in climates with extreme temperatures (e.g., >40°C), who may theoretically be at higher risk.

Renal function in geriatric psychiatry patients compared to non-psychiatric older adults: effects of lithium use and other factors.

OBJECTIVES: Chronic renal failure is very common, affecting 30%-40% of community-dwelling elderly. We wished to verify whether geriatric psychiatry patients are at increased risk of renal dysfunction compared to elderly controls, as well as whether lithium exposure and other factors are important predictors of risk. METHOD: This is a four-year retrospective cohort and nested case-control study at a Canadian tertiary-care hospital using data from March 2007 to March 2011. We compared 82 geriatric psychiatry outpatients and 200 psychotropic-naïve family medicine controls aged ≥65. Our main continuous measure of renal outcome was change in estimated glomerular filtration rate (eGFR). Multivariate analyses were performed to determine potential risk factors for renal dysfunction in geriatric psychiatry patients, including age, hypertension, diabetes mellitus, diuretics, and lithium duration. RESULTS: Clinically important decreases in eGFR (>8 mL/min/1.73 m(2)) were found in 40.2% of geriatric psychiatry patients compared to 29.5% of controls (p = 0.040). Multivariate analyses found that lithium duration was independently associated with adverse renal outcome in patients with eGFR < 60 mL/min/1.73 m(2). In this sub-population, lithium users had clinically important decreases in eGFR when compared to non-lithium users: 10.3 vs. 0.40 mL/min/1.73 m(2) (p = 0.017). CONCLUSION: Geriatric psychiatry patients are at a greater risk for clinically important decreases of renal function than similarly aged controls. Lithium appears to be an important risk factor for renal dysfunction when eGFR is <60 mL/min/1.73 m(2). However, in the majority of older adults who have normal kidney function, lithium use appears to be safe.

Correction: Evaluating the Clinical Feasibility of an Artificial Intelligence-Powered, Web-Based Clinical Decision Support System for the Treatment of Depression in Adults: Longitudinal Feasibility Study.

[This corrects the article DOI: 10.2196/31862.].

Chronic renal failure in lithium-using geriatric patients: effects of lithium continuation versus discontinuation--a 60-month retrospective study.

OBJECTIVE: Lithium remains an important treatment in bipolar disorder. Although lithium is often discontinued because of signs of renal failure, it is unclear if this alters the course of renal function in the majority of patients. We hypothesize that in geriatric patients with chronic renal failure (CRF), who have a high burden of medical illness, lithium continuation does not significantly impact renal function (glomerular filtration rate (eGFR)). METHODS: We conducted a retrospective study of tertiary-care geriatric psychiatry outpatients with a history of lithium use and evidence of CRF (eGFR ≤ 60 ml/min/1.73 m2 on ≥ 2 occasions in ≥ 3 months). The 27 patients who met these criteria were divided into lithium 'continuers' (continued use ≥ 2 years following CRF) and 'discontinuers'. Mean eGFR and creatinine were followed at 21 and 60 months after developing CRF. RESULTS: Mean serum eGFR and creatinine were not significantly different between groups at any time during follow-up. When comparing renal function at 60 months to baseline, a trend towards increased creatinine was seen in continuers (p = 0.06) but not in discontinuers. Changes in eGFR in continuers and discontinuers after 60 months did not achieve statistical significance (p = 0.35 and 0.98). However, clinically important decreases in eGFR occurred in the majority of continuers but in none of the discontinuers. CONCLUSIONS: There was a trend towards declining renal function in lithium continuers at 60-month follow-up. Future prospective longitudinal studies will be needed to confirm our findings. We suggest vigilance and close monitoring of renal function when continuing CRF patients on lithium for extended periods.

Development of central diabetes insipidus following electroconvulsive therapy: results of a prospective pilot study.

OBJECTIVES: The objective of this study was to examine the occurrence of laboratory abnormalities and symptoms of central diabetes insipidus (CDI) in patients receiving acute electroconvulsive therapy (ECT) series. METHODS: We prospectively investigated adult psychiatric inpatients for objective and subjective evidence of CDI at baseline and after their sixth ECT. RESULTS: Although participants did not report any CDI symptoms, two thirds had clinically important decreases in urine osmolality (>200 mOsm/kg), and two thirds had serum sodium increases of 5 mmol/L following exposure to ECT. CONCLUSION: Our findings suggest that objective evidence of CDI can occur following the administration of ECT series, even in the absence of symptomatic complaints.

Caregiving appraisal and disease activity in early inflammatory arthritis.

OBJECTIVE: The caregiving process accompanying inflammatory arthritis can be stressful to both caregivers and care recipients. In this study, we examined how caregiving involvement and caregiving appraisal as perceived by both patients and their caregiving spouses relate to disease activity and mental health of patients in early inflammatory arthritis. METHODS: Patients in the early phase (> 6 weeks, <18 months duration) of inflammatory arthritis were recruited from a larger early inflammatory arthritis registry, which recorded sociodemographic data and disease characteristics. Disease activity was measured with the Disease Activity Score in 28 joints (DAS28). Current depressive symptoms were measured using the Center for Epidemiologic Studies - Depression Mood Scale. Patient and spouse perceived caregiving involvement and caregiving appraisal were assessed using the Caregiving Involvement Questionnaire and Caregiving Appraisal Scale, respectively. RESULTS: The study sample consisted of 73 patients living with spouse. Mean age was 54 years, 64.4% were women and mean illness duration was 7.48 months. Patients' positive caregiving appraisal was associated with less disease activity (DAS28) (p = 0.003) and less total depressive mood (p < 0.001). In multivariate analysis, patients' appraisal of the caregiving context was negatively associated with disease activity (DAS28) after controlling for caregiving involvement and depression (p = 0.035). CONCLUSION: This study indicates that, in early inflammatory arthritis, patients' caregiving appraisal might be important to consider when assessing disease activity. Clinicians are encouraged to include both patients and their spouse caregivers in interventions.

Using hypernatraemic events to predict reduced renal function in elderly lithium patients: a brief report.

BACKGROUND: Diabetes insipidus (DI) is a recognized adverse effect of lithium use, and studies have shown an association between decreased renal function and DI in patients using lithium. We hypothesize that hypernatraemic events that occur in DI predict decreased renal function in elderly patients on lithium. METHODS: We conducted a retrospective cohort study involving 55 geriatric psychiatry patients using lithium between 1985 and 2010. Patients who always had sodium levels ≤146 mmol/L were compared to patients with one or more episodes of hypernatraemia (serum sodium level ≥147 mmol/L) for estimated glomerular filtration rate (eGFR) levels and prevalence of severe chronic renal failure (eGFR ≤30 mL/min/1.73 m(2)). RESULTS: eGFR was found to be less in the hypernatraemic group than in the non-hypernatraemic controls (41 vs 56 mL/min/1.73 m(2); P = 0.0074). Severe chronic renal failure appeared more prevalent in hypernatraemic patients (4/14 (28.6%) vs. 3/41 (7.3%)), but this did not achieve statistical significance (P = 0.061). The two groups did not differ for age, sex, medical comorbidities or other clinical variables, except antidepressant use. Hypernatraemic patients appeared less likely to use antidepressants than non-hypernatraemic patients, odds ratio = 0.69 (P = 0.020). However, in multivariate analysis, hypernatraemia correlated with decreased eGFR (ß = -0.39, P = 0.004), while antidepressant use did not (P = 0.81). CONCLUSIONS: These results suggest that hypernatraemic events may predict reduced renal function in geriatric patients using lithium. The role of hypernatraemia and DI in renal failure in this population requires further study. Health professionals should be aware of the risks of renal failure in older patients treated with lithium, especially in the context of sodium level abnormalities.