Non-pharmacological interventions to reduce thirst in patients with heart failure or hemodialysis: A systematic review and meta-analysis.

BACKGROUND: Thirst is a frequent and burdening symptom in many patients, especially in patients with chronic heart failure (CHF) and/or receiving hemodialysis (HD). As drug therapies are not feasible, non-pharmacological strategies are needed to reduce thirst and thirst-related burden. OBJECTIVES: To identify non-pharmacological interventions aiming to reduce thirst in patients with CHF and/ or HD, to describe intervention components, and to evaluate the effectiveness of these interventions. METHODS: In February 2024, we completed a systematic search in MEDLINE via PubMed, Livivo, CINAHL, Cochrane Library and Web of Science. Two reviewers independently screened titles, abstracts, and full texts, performed critical appraisal and data extraction. We checked risk of bias with the checklists of the Joanna Briggs Institute and the Cochrane Risk of Bias tool and calculated meta-analyses for sufficiently homogeneous studies using fixed-effects models. RESULTS: We included 15 intervention studies applying non-pharmacological interventions including chewing gum (n = 8), low-sodium diet (n = 2), acupressure (n = 1), frozen strawberries (n = 1), fluid timetables (n = 1), ice cubes and mouthwash (n = 1), and a psychological intervention (n = 1). Sample sizes varied between 11 and 88 participants. Eleven intervention studies showed a reduction of thirst as intervention effect. Meta-analyses for chewing gum showed no significant effect on thirst using a visual analogue scale (IV: -2,32 [-10.37,5.73]; p = 0.57) or the dialysis thirst inventory (IV: -0.26 [- 1.83, 1.30]; p = 0.74). Quality of studies was moderate to low. CONCLUSION: Results indicate that various non-pharmacological interventions could be helpful to reduce thirst in patients with CHF or HD, but important uncertainty remains.

What frail, older patients talk about when they talk about self-care-a qualitative study in heart failure care.

BACKGROUND: Self-care plays a crucial role in the management of heart failure (HF) and is especially important for older patients who are frail. However, there is limited knowledge about how frail, older patients with HF perceive and experience self-care. Therefore, the aim of this study was to describe the experiences of self-care among frail, older patients with HF. METHODS: A qualitative descriptive design with semi-structured interviews with frail, older patients diagnosed with HF (n = 19; median age 82 years). Thematic analysis, guided by Braun and Clarke, was used to analyse the data. RESULTS: Two main themes emerged from the analysis: 1) "To maintain my health," encompassing various aspects such as hygiene practices, engaging in physical activity, medication adherence, following a healthy diet, and ensuring adequate rest; and 2) "To maintain my well-being and happiness," highlighting the importance of hobbies, maintaining independence, participating in social activities, and creating a supportive environment. CONCLUSION: This study provides valuable insights into the perspectives of frail, older patients with HF regarding self-care. It was observed that older patients often associate self-care with general well-being, hygiene, and happiness. Clear communication between healthcare providers and patients is essential to align different perspectives on self-care and ensure that self-care plans are tailored to individual needs. Moreover, addressing the emotional well-being and happiness of patients should be prioritized, as these factors play a significant role in promoting self-care adherence.

Nurses' perceptions of patient involvement in shared decision-making in cardiovascular care.

It is important for nurses to involve patients in their own care to enable shared decision-making. This study aimed to explore the perceptions of nurses regarding the degree to which involvement in shared decision-making takes place in clinical settings during consultations. Previous studies have shown that the use of shared decision-making by healthcare professionals can improve their caring practices and the quality of life of their patients. However, studies have also shown little evidence of the existence of shared decision-making in clinical practice. One step forward can be to clarify nurses' perceptions of patient involvement in shared decision-making. Qualitative data were collected from 10 nurses at four Swedish hospitals using a semi-structured, open-ended interview guide. The data were analyzed using inductive latent content analysis. The results showed that the care practices described by the nurses in the study are clearly different from the healthcare policy and scientific vision of shared decision-making. The nurses in the study believe that, with some exceptions, both healthcare professionals and patients prefer to leave decision-making to medical experts. In order to take advantage of the existing potential for improvement of shared decision-making in cardiologic care, healthcare professionals must be given time to seriously listen to and develop an interest in their patients' lifeworlds. Furthermore, the implementation of shared decision-making requires a mutual initiative and development of knowledge about the decision-making process from healthcare professionals and patients.

The responsibility to quench thirst by providing drinks when a relative is dying spouses' experience in specialist palliative home care.

BACKGROUND: Thirst and dry mouth are common symptoms in terminally ill patients. It is known that family members usually request drips for their dying relative. Few studies have focused on thirst in terminally ill patients and their spouses' experience of this, leading to a knowledge gap in this area. AIM: The aim of this study was to explore spouses' experiences of observing and managing thirst in a dying relative admitted to specialist palliative home care. METHODS: A qualitative interview study with an inductive approach was conducted. Eighteen spouses caring for their husband or wife admitted to specialist palliative home care in different hospitals in Sweden were interviewed. The interviews were transcribed verbatim and analysed with a reflexive thematic analysis. RESULTS: Three main themes emerged regarding spouses' experiences of patients' thirst: Knowledge and views of thirst; Control of fluid intake provides vital information; and Taking charge of their drinking is a life and death responsibility. CONCLUSIONS: Spouses experience a responsibility to serve the dying person with fluids so that they will not get thirsty. It is so obvious and commonplace to them. To be able to fulfil this responsibility, they need to keep track of the patient's fluid intake and know what quenches thirst. There is a need for research in this area to assist carers and patients in identifying which drinks best quench the patient's thirst. Interventions are also needed to help provide/make available knowledge on suitable thirst-quenching drinks.

Assistant nurses' experiences of thirst and ethical dilemmas in dying patients in specialized palliative care-A qualitative study.

AIMS: To describe assistant nurses' experiences of thirst and ethical challenges in relation to thirst in terminally ill patients in specialized palliative care (PC) units. DESIGN: A qualitative, reflexive thematic design with an inductive analysis was used. METHODS: Data were collected during November 2021-January 2023. Twelve qualitative interviews with assistant nurses working in five different specialized PC units in different hospitals in Sweden were conducted. The interviews were transcribed verbatim and analysed with a reflexive thematic analysis. The study was guided by the Standards for Reporting Qualitative Research (SRQR). RESULTS: Two main themes were found in this study. (1) 'A world of practice for thirst relief' where assistant nurses present a task-oriented world where the knowledge of thirst is an experience-based unspoken knowledge where mainly routines rule. (2) Ethical challenges presents different ethical problems that they meet in their practice, such as when patients express thirst towards the end of their life but are too severely ill to drink or when they watch lack of knowledge in the area among other health professionals. CONCLUSION: Thirst in dying patients is a neglected area that assistant nurses work with, without communicating it. Their knowledge of thirst and thirst relief are not expressed, seldom discussed, there are no policy documents nor is thirst documented in the patient's record. There is a need for nurses to take the lead in changing nursing practice regarding thirst. PATIENT OR PUBLIC CONTRIBUTION: No patient or public contribution. IMPACT: In palliative care, previous studies have shown that dying patients might be thirsty. Assistant nurses recognize thirst in dying patients, but thirst is not discussed in the team. Nurses must consider the patient's fundamental care needs and address thirst, for example in the nursing process to ensure patients quality of life in the last days of life. REPORTING METHOD: The study was guided by the SRQR. WHAT DOES THIS ARTICLE CONTRIBUTE TO THE WIDER GLOBAL CLINICAL COMMUNITY?: Thirst is a distressing symptom for all humans. However, when a patient is dying, he or she loses several functions and can no longer drink independently. The knowledge from this article contributes to our understanding of current practice and shows an area that requires immediate attention for the improvement of fundamental palliative care delivery.

Thirst or dry mouth in dying patients?-A qualitative study of palliative care physicians' experiences.

INTRODUCTION: Thirst and dry mouth are common symptoms among patients at the end of life. In palliative care today, there is a focus on mouth care to alleviate thirst. There are no qualitative studies on thirst from a physician's experience, which is why this study is needed. PURPOSE: This study aimed to explore palliative care physicians' experiences and views of thirst in patients at the end of life. METHODS: A qualitative interview study with an inductive approach was carried out. Sixteen physicians working in specialised palliative care units in Sweden were included. The interviews were analysed with a reflexive thematic analysis. RESULTS: The analysis resulted in three basic assumptions regarding thirst: It is dry mouth, not thirst; patients are dry in their mouth and thirsty; and, I do not know if they are thirsty. Further, four different themes regarding how to relieve thirst appeared: drips will not help thirst but cause harm; the body takes care of thirst itself; drips might help thirst; and, mouth care to relieve thirst or dry mouth. CONCLUSIONS: The palliative care physicians had different experiences regarding thirst, from thirst never arising, to a lack of awareness. They thought good mouth care worked well to alleviate the feeling of thirst and dry mouth. Most physicians did not want to give patients drips, while some did. This study indicates that there are many unanswered questions when it comes to thirst at end-of-life and that further research is needed.

Ethical challenges around thirst in end-of-life care -experiences of palliative care physicians.

BACKGROUND: Thirst and dry mouth are common symptoms in terminally ill patients. In their day-to-day practice, palliative care physicians regularly encounter ethical dilemmas, especially regarding artificial hydration. Few studies have focused on thirst and the ethical dilemmas palliative care physicians encounter in relation to this, leading to a knowledge gap in this area. AIM: The aim of this study was to explore palliative care physicians' experiences of ethical challenges in relation to thirst in terminally ill patients. METHODS: A qualitative interview study with an inductive approach was conducted. Sixteen physicians working in four different specialised palliative care units and one geriatric care unit in different hospitals in Sweden were interviewed. The interviews were transcribed verbatim and analysed with a reflexive thematic analysis. RESULTS: When presented with an ethical challenge relating to thirst, physicians attempted to balance benefits and harms while emphasizing respect for the patient's autonomy. The ethical challenges in this study were: Starting, continuing or discontinuing drips; lack of evidence and traditions create doubt; and lack of interest and time may result in patient suffering. CONCLUSIONS: All physicians in this study reported that "Starting, continuing or discontinuing drips" was the main ethical challenge they encountered, where some were so accustomed to the decision that they had a standard answer ready to offer patients and families. Physicians reported that drips were a symbol of thirst quenching, life and survival but were not necessary in end-of-life care. Others questioned the traditions regarding thirst and emphasised drips in particular.

Thirst intensity survey in ADPKD patients.

INTRODUCTION: With increased fluid intake and tolvaptan treatment, the growth rate of cysts can be theoretically decelerated in autosomal polycystic kidney disease. In this prospective study, it was planned to evaluate thirst sensation in these patients and the parameters affecting its intensity. METHODS: Forty-one ADPKD patients on tolvaptan and 40 ADPKD patients not on tolvaptan as the control group were evaluated for thirst distress sensation and intensity. The feeling of thirst and the discomfort caused by excessive fluid intake was assessed with Thirst Distress Scale-HF 12 questions (60/12). Thirst intensity was evaluated with a 100 mm visual scale. RESULTS: Of the whole group, 35.8% (29) were males, and 64.2% (52) were females. The mean age of the tolvaptan group was 39.17 ± 9.35 years and for the control group, it was 41.95 ± 12.29 years. There was a negative correlation between the thirst distress score of the patients and an increase in creatinine level after a year of tolvaptan treatment (r = - 0.335, p = 0.035). The patients not taking thiazide had higher thirst intensity scores (p = 0.004). There was no impact of tolvaptan dosage, total kidney volume, serum sodium, urinary osmolarity or eGFR on thirst distress and thirst intensity scores. DISCUSSION/CONCLUSION: Only thiazide co-treatment had a positive impact on thirst distress and intensity when given tolvaptan. Thirst Distress Scale for ADPKD patients can be used to classify patients before and during tolvaptan treatment.

Thirst and factors associated with thirst in hospitalized patients with heart failure in China.

BACKGROUND: Thirst is a distressing symptom and increases burden of the patients with heart failure (HF). Knowledge about thirst in HF patients is still not clear in China. OBJECTIVE: To describe thirst intensity, distress, frequency, and duration and to identify factors associated with thirst intensity in hospitalized HF patients in China. METHODS: A cross-sectional descriptive study was conducted in two public hospitals in Shanghai, China. Patients were recruited in cardiology wards. Sociodemographic and clinical data were collected by the social-demographic and disease-related questionnaire. Thirst was assessed by Visual Analog Scale (VAS, 0-100 mm), Thirst Distress Scale for HF patients (scores 8 to 40) and three questions about thirst frequency and duration. Anxiety and depression were measured by the Hospital Anxiety and Depression Scale. RESULTS: Four hundred and thirty-one patients participated in this study. Their mean (SD) thirst intensity was 47 (±22) mm, and the thirst distress was 21(±4). It was found that 75% patients had moderate to severe feeling in thirst intensity and 73% in distress. Most patients experienced thirst several times a week (33%) or several times a month (38%). Most patients (88%) felt thirst for one hour or less. The most intense thirst occurred in the morning (26%), afternoon (19%) and before sleeping (16%). Factors associated with thirst were omeprazole, renal insufficiency, coronary heart disease, high NYHA class and low room humidity. No links were found between physiological indicators of HF (ProBNP) and thirst. CONCLUSIONS: HF patients have strong sense of thirst. However, it is rarely identified by healthcare professionals. It is crucial for healthcare providers to keep an eye on patients' thirst symptoms. More attention should be paid to patients with thirst risk factors to minimize the discomfort of thirst.

Translation and Psychometric Evaluation of the German Version of the Thirst Distress Scale for Patients With Heart Failure.

BACKGROUND: In patients with chronic heart failure, thirst can be perceived as an intensive and burdensome symptom, which may have a negative impact on patients' quality of life. To initiate thirst-relieving interventions, assessment of thirst and its related distress is essential. At the time of this study, no instrument was available to evaluate thirst distress in patients with heart failure in Germany. OBJECTIVE: The aims of this study were to translate the "Thirst Distress Scale for patients with Heart Failure" (TDS-HF) from English into German and to test validity and reliability of the scale. METHODS: The English version of the TDS-HF was translated into German. A linguistically and culturally sensitive forward-and-backward translation was performed. Psychometric evaluation included confirmatory factor analysis, reliability in terms of internal consistency, and concurrent validity. RESULTS: Eighty-four hospitalized patients (mean age, 72 ± 10 years; 29% female; mean left ventricular ejection fraction, 36% ± 12%; 62% New York Heart Association functional classes III-IV, 45% on fluid restriction) from an acute care hospital were involved in the study. The item-total correlation ranged from 0.58 to 0.78. Interitem correlations varied between 0.37 and 0.79. Internal consistency was high, with a Cronbach α of 0.89. There was a high correlation between the total score of the TDS-HF and the visual analog scale to assess thirst intensity ( r = 0.72, P ≤ .001), and a low correlation with fluid restriction ( r = 0.35, P = .002). CONCLUSIONS: The evaluation of the German TDS-HF showed satisfactory psychometric properties in this sample. The instrument is usable for further research and additional psychometric testing.

Thirst distress in outpatients with heart failure in a Mediterranean zone of Spain.

AIMS: This study aimed to evaluate psychometric properties of the Spanish version of the Thirst Distress Scale for patients with Heart Failure (TDS-HF) and to describe thirst distress-associated factors in outpatients at a heart failure (HF) clinic in Spain. Thirst is common in patients with HF, but thirst distress has rarely been addressed and may significantly decrease quality of life. METHODS AND RESULTS: A cross-sectional study was performed assessing perceived thirst distress by patients with HF during the preceding 3 days, with the TDS-HF (scores 8 to 40). Univariable and multivariable linear regression analyses were performed to identify variables independently associated with thirst distress. Three-hundred two HF outpatients were included (age 67 ± 12 years, 74% male, HF duration 82 ± 75 months, left ventricular ejection fraction 42 ± 14%). Most patients were on treatment with fluid restriction (99%), sodium restriction (99%), and diuretics (70%). The psychometric evaluation of the Spanish version of the TDS-HF showed satisfactory item-total and inter-item correlations (range from 0.77 to 0.85 and 0.60 to 0.84, respectively), and internal consistency was 0.95 (Cronbach's alpha). The majority perceived mild to moderate thirst distress, and 18% perceived it as high or severe. The mean score obtained was 16.2 ± 9.3 (median 13, Q1-Q3 8-20). Higher serum urea {beta coefficient 1.6 [95% confidence interval (CI) 0.267 to 2.92], P = 0.019} and lower potassium [beta coefficient -3.63 (85% CI -6.32 to -0.93), P = 0.009] remained significantly associated with thirst distress in the multivariable analysis, together with the dose of diuretics [beta coefficient 2.98 (95% CI 1.37 to 4.59), P < 0.001]. Treatment with angiotensin receptor blocker showed an independent protective effect [beta coefficient -3.62 (95% CI -6.89 to -0.345), P = 0.03]. CONCLUSIONS: The psychometric evaluation of the Spanish version of the TDS-HF showed good psychometric properties. One in five patients experienced severe distress by thirst, but the majority had mild to moderate thirst distress. The dose of diuretics and angiotensin receptor blocker treatment influence thirst distress and could be clinically important targets to relieve thirst distress in patients with HF.

Thirst and factors associated with frequent thirst in patients with heart failure in Spain.

BACKGROUND: Thirst is a troublesome symptom in patients with Heart Failure (HF) and one that might be perceived differently in different countries depending on climate, food and cultural habits. The aims of the study were to describe thirst frequency, duration and intensity and to identify factors associated with frequent thirst in outpatients with HF in a Mediterranean country. METHODS: Data was collected in a cross-sectional study involving 302 patients diagnosed with HF (age 67±12 years, 74% male, LVEF 43%±14) in Spain on thirst frequency and duration, and thirst intensity by patient self-report (VAS, 0-100 mm). Clinical variables were collected from the medical files. Regression analysis was used to identify factors independently associated with frequent thirst. RESULTS: Of all the patients, 143 (47%) were frequently thirsty, and their median (25th and 75th percentiles) thirst intensity was higher (VAS 50 mm [20-67] vs 7 [0-20], p<.001). Their thirst lasted longer compared to those who never/sometimes were thirsty (p<.001). Less treatment with angiotensin receptor blockers (Odds Ratio [OR] 2.72; 95% Confidence Interval [CI] 1.33-5.58), diuretics >40 mg/day (OR 1.92; 95% CI 1.02-3.64), depression (OR 2.99; CI 1.17-7.62), male gender (OR 1.98; CI 1.08-3.64) and worse New York Heart Association functional class (OR 1.92; 95% CI 1.05-3.52) were independently associated with frequent thirst. CONCLUSIONS: About half of patients with HF and fluid restriction experienced frequent thirst in a Mediterranean area of Spain, and their thirst duration and intensity were significantly increased. Frequent thirst was associated with demographic, clinical and therapeutic variables. The results may help to identify patients with a higher risk of frequent thirst and might suggest therapeutic changes in order to diminish this troublesome symptom.

Symptom management strategies used by older community-dwelling people with multimorbidity and a high symptom burden - a qualitative study.

BACKGROUND: Older community-dwelling people with multimorbidity are often not only vulnerable, but also suffer from several conditions that could produce a multiplicity of symptoms. This results in a high symptom burden and a reduced health-related quality of life. Even though these individuals often have frequent contact with healthcare providers they are expected to manage both appropriate disease control and symptoms by themselves or with the support of caregivers. The aim of this study was therefore to describe the symptom management strategies used by older community-dwelling people with multimorbidity and a high symptom burden. METHOD: A qualitative descriptive design using face-to-face interviews with 20 community-dwelling older people with multimorbidity, a high healthcare consumption and a high symptom burden. People ≥75 years, who had been hospitalized ≥3 times during the previous year, ≥ 3 diagnoses in their medical records and lived at home were included. The participants were between 79 and 89 years old. Data were analysed using content analyses. RESULT: Two main strategy categories were found: active symptom management and passive symptom management. The active strategies include the subcategories; to plan, to distract, to get assistance and to use facilitating techniques. An active strategy meant that participants took matters in their own hands, they could often describe the source of the symptoms and they felt that they had the power to do something to ease their symptoms. A passive symptom management strategy includes the subcategories to give in and to endure. These subcategories often reflected an inability to describe the source of the symptoms as well as the experience of having no alternative other than passively waiting it out. CONCLUSIONS: These findings show that older people with multimorbidity and a high symptom burden employ various symptom management strategies on daily basis. They had adopted appropriate strategies based on their own experience and knowledge. Healthcare professionals might facilitate daily life for older people with multimorbidity by providing guidance on active management strategies with focus on patient's own experience and preferences.

Thirst in Patients With Heart Failure in Sweden, the Netherlands, and Japan.

BACKGROUND: Thirst is a distressing symptom and influences quality of life of patients with heart failure (HF). Knowledge about thirst in HF is insufficient; therefore, the aim of this study was to describe factors related to thirst, self-reported reasons for thirst, and interventions to relieve thirst in 3 different countries. METHODS: A cross-sectional study was conducted in Sweden, the Netherlands, and Japan. Patients were recruited at the HF clinic or during HF hospitalization. Thirst was assessed by a visual analog scale (0-100); reasons for thirst and interventions to relieve thirst were assessed by an open-ended questionnaire. Patients were divided into low and high thirst based on the first and third tertiles of the visual analog scale. RESULTS: Two hundred sixty-nine patients participated in the study (age, 72 ± 12 years). Mean thirst intensity was 24 ± 24, with a mean thirst of 53 ± 15 in the highest tertile. No significant differences in thirst among the 3 countries were found. Multivariable logistic regression analysis showed that a higher dose of loop diuretics (odds ratio, 3.47; 95% confidence interval, 1.49-8.06) and fluid restriction (odds ratio, 2.21; 95% confidence interval, 1.08-4.32) were related to thirst. The most reported reasons for thirst were salty/spicy food (20%) and low fluid intake (18%). Most of the patients (56%) drank more in case of thirst; 20% only drank a little bit, probably related to a fluid restriction. CONCLUSIONS: Thirst in patients with HF was related to a higher dose of loop diuretics and fluid restriction. Healthcare providers should realize that it is important to assess thirst regularly and reconsider the need of a fluid restriction and the amount of loop diuretics in case of thirst.

Development and Validation of a Questionnaire to Measure Patient's Experiences of Health Care in Pulmonary Arterial Hypertension Outpatient Clinics.

BACKGROUND: Measuring the patients' experience of care at an outpatient clinic can provide feedback about the quality of health care and if needed, can be support for quality improvements. To date, there is no patient reported experience measurement (PREM) developed targeting patients at the pulmonary arterial hypertension (PAH) outpatient clinics. Therefore, the aim was to develop and evaluate the psychometric properties of a PREM scale to be used for patients at PAH-outpatient clinics. METHODS: The development and psychometric evaluation of the PREM for patients at PAH outpatient clinics followed two stages: (I) development of the PAH Clinic PREM (PAHC-PREM) scale based on interviews with patients; and (II) psychometric evaluation of the PAHC-PREM scale including data quality, factor structure (construct validity), criterion validity and internal consistency. RESULTS: A sample of 156 patients at PAH outpatient clinics completed the PAHC-PREM scale (median age 69 years, 57% women). Unidimensionality of the PAHC-PREM scale was supported by parallel analysis. A single factor explained 67% of the variance. Inter-item and item-total correlations were satisfactory (0.46-0.88 and 0.64-0.91, respectively). Internal consistency reliability with ordinal coefficient alpha was good (0.93). CONCLUSIONS: The PAHC-PREM scale was demonstrated to have good psychometric properties and is now ready to be used to measure quality of health care experience from patients at PAH-outpatient clinics.

Trajectory of thirst intensity and distress from admission to 4-weeks follow up at home in patients with heart failure.

BACKGROUND: Patients with heart failure (HF) can suffer from increased thirst intensity and distress. Trajectories of thirst intensity and distress from hospital to home are unclear. The aim of this study was to describe thirst intensity and distress trajectories in patients from the time of hospital admission to 4 weeks after discharge, and describe trajectories of thirst intensity and distress by patients' characteristics (gender, age, body mass index [BMI], plasma urea, anxiety, and depression). PATIENTS AND METHODS: In this observational study, data were collected from patients with HF (n=30) at hospital admission, discharge, and at 2 and 4 weeks after discharge. Thirst intensity (visual analog scale, 100 mm) and distress (Thirst Distress Scale-HF, score 9-45) were used. Trajectories were examined using growth modeling. RESULTS: Trajectory of the thirst intensity was significantly different, for patients with low and high thirst intensity levels (median cut-off 39 mm), from admission to 4 weeks follow up (thirst increased and decreased, respectively). Patients with high level of thirst distress (median score >22) at admission, having fluid restriction and women continued to have higher thirst distress over time. Patients feeling depressed had higher thirst intensity over time. There were no differences in the trajectories of thirst intensity and distress by age, BMI, plasma urea, and anxiety. CONCLUSION: Intensity and distress of thirst, having fluid restriction, and feeling depressed at the admission were critical in predicting the trajectory of thirst intensity and distress after discharge to home in patients with HF. Effective intervention relieving thirst should be provided before their discharge to home.

Development and psychometric evaluation of the Thirst Distress Scale for patients with heart failure.

BACKGROUND: Patients with heart failure can experience thirst distress. However, there is no instrument to measure this in patients with heart failure. The aim of the present study was to develop the Thirst Distress Scale for patients with Heart Failure (TDS-HF) and to evaluate psychometric properties of the scale. METHODS AND RESULTS: The TDS-HF was developed to measure thirst distress in patients with heart failure. Face and content validity was confirmed using expert panels including patients and healthcare professionals. Data on the TDS-HF was collected from patients with heart failure at outpatient heart failure clinics and hospitals in Sweden, the Netherlands and Japan. Psychometric properties were evaluated using data from 256 heart failure patients (age 72±11 years). Concurrent validity of the scale was assessed using a thirst intensity visual analogue scale. Patients did not have any difficulties answering the questions, and time taken to answer the questions was about five minutes. Factor analysis of the scale showed one factor. After psychometric testing, one item was deleted. For the eight item TDS-HF, a single factor explained 61% of the variance and Cronbach's alpha was 0.90. The eight item TDS-HF was significantly associated with the thirst intensity score ( r=0.55, p<0.001). Regarding test-retest reliability, the intraclass correlation coefficient was 0.88, and the weighted kappa values ranged from 0.29-0.60. CONCLUSION: The eight-item TDS-HF is valid and reliable for measuring thirst distress in patients with heart failure.

Fluid restriction in patients with heart failure: how should we think?

BACKGROUND/AIM: Fluid restriction has long been considered one of the cornerstones in self-care management of patients with heart failure. The aim of this discussion paper is to discuss fluid restriction in heart failure and propose advice about fluid intake in heart failure patients. RESULTS: Although there have been seven randomised studies on fluid restriction in heart failure patients, the effect of fluid restriction on its own were only evaluated in two studies. In both studies, a stringent fluid restriction compared to a liberal fluid intake was not more beneficial with regard to clinical stability or body weight. In the other studies fluid restriction was part of a larger study intervention including, for example, individualised dietary recommendations and follow-up by telephone. Thus, the effect of fluid restriction on its own has been poorly evaluated. CONCLUSION: Fluid restriction should not be recommended to all heart failure patients. However, temporary fluid restriction can be considered in decompensated heart failure and/or patients with hyponatremia. Tailored fluid restriction based on body weight (30 ml/kg per day) seems to be most reasonable. To increase adherence to temporary fluid restriction, education, support and planned evaluations can be recommended.

Urine measurement indicates the plasma brain natriuretic peptide concentration during optimization of heart failure treatment.

AIM: To assess the correlation between the amino-terminal pro-hormone brain natriuretic peptide (NT-proBNP) concentration in blood and urine during a period when actively adjusting the treatment of heart failure (HF). METHODS: Plasma and urine analyses of NT-proBNP were compared in 51 patients on admission to and discharge from a nurse-led outpatient clinic where HF treatment was optimized. The median time between the two measurements was 42 days. Correlations were analyzed using linear regression, where R(2) is the degree of variability in the plasma NT-proBNP concentration that can be accounted for by the urinary NT-proBNP. RESULTS: There was a statistically significant linear relationship between the urine and plasma concentrations of NT-proBNP on both occasions, but R(2) varied greatly depending on how the data were presented. The correlation between the raw data showed an R(2) of only 30%, and it almost doubled upon logarithm transformation, which shows that the variability (error) was concentration-dependent. Correction of the urinary NT-proBNP for urinary creatinine further increased R(2) for the logarithm-transformed correlation to 68% on admission and 76% on discharge. The highest R(2) (77%) was obtained when the relative changes in urinary NT-proBNP/creatinine between admission and discharge were compared with the corresponding relative changes in the plasma concentration. The sensitivity and specificity of the urine in indicating plasma concentration changes > 10% were 82% and 86%, respectively. CONCLUSION: Relative changes in plasma NT-proBNP could be reliably estimated from urine samples during a period of optimization of HF treatment.