Change of sleep quality from pre- to 3 years post-solid organ transplantation: The Swiss Transplant Cohort Study

Sleep Patterns in Patients After Solid Organ Transplantation Including Gender and Age Differences. Survey Results From One Transplantation Centre in Poland

INTRODUCTION

Sleep plays a crucial role in maintaining health. Transplant patients are exposed to numerous stressors and are at risk of sleep disturbances. The aim of this study was to assess the sleep patterns of transplant patients.

METHODS

An anonymous paper survey was carried out among patients from one transplant center in Poland. Respondents were asked about the quality and quantity of sleep and the overall impact of the transplantation on their night rest. Data were collected from June to November 2023.

RESULTS

Data were obtained from 212 respondents (122 males and 90 females), aged 48.38 ± 13.68. The positive impact of transplantation on sleep hygiene was indicated by 57.4% of respondents, 28.9% observed no impact, and 13.6% rated the impact as negative. Our study showed that sleep is more satisfying in males than in females (62.8% of males and 46.7% of females). The analysis revealed that 38.9% of females need 30 minutes more than men to fall asleep. Additionally, females tend to get up half an hour later compared to men. About 71.9% of males declared good well-being the next day compared to 62.2% of females. Furthermore females declared more sleepiness the next day. The study also showed that older transplant recipients (over 50 years-of-age) report more frequent awakenings at night.

CONCLUSIONS

The data collected showed differences in sleep patterns according to gender and age. Females and older patients should be screened for sleep disturbances during post-transplantation care.

Sleep disturbances in chronic liver disease

Sleep disturbances are common in chronic liver disease and significantly impact patient outcomes and quality of life. The severity and nature of sleep disturbances vary by liver disease etiology and severity. While there is ongoing research into the association between liver disease and sleep-wake dysfunction, the underlying pathophysiology varies and, in many cases, is poorly understood. Liver disease is associated with alterations in thermoregulation, inflammation, and physical activity, and is associated with disease-specific complications, such as HE, that may directly affect sleep. In this article, we review the relevant pathophysiologic processes, disease-specific sleep-wake disturbances, and clinical management of CLD-associated sleep-wake disturbances.

Disturbed sleep after lung transplantation is associated with worse patient-reported outcomes and chronic lung allograft dysfunction

Many lung transplant recipients fail to derive the expected improvements in functioning, HRQL, or long-term survival. Sleep may represent an important, albeit rarely examined, factor influencing lung transplant outcomes. Within a larger cohort study, 141 lung transplant recipients completed the Medical Outcomes Study (MOS) Sleep Scale along with a broader survey of patient-reported outcome (PRO) measures and frailty assessment. MOS Sleep yields the Sleep Problems Index (SPI); we also derived an insomnia-specific subscale. Potential perioperative predictors of disturbed sleep and time to chronic lung allograft dysfunction (CLAD) and death were derived from medical records. We investigated associations between perioperative predictors on SPI and Insomnia and associations between SPI and Insomnia on PROs and frailty by linear regressions, adjusting for age, sex, and lung function. We evaluated the associations between SPI and Insomnia on time to CLAD and death using Cox models, adjusting for age, sex, and transplant indication. Post-transplant hospital length of stay >30 days was associated with worse sleep by SPI and insomnia (SPI: p=0.01; Insomnia p=0.02). Worse sleep by SPI and insomnia was associated with worse depression, cognitive function, HRQL, physical disability, health utilities, and Fried Frailty Phenotype frailty (all p<0.01). Those in the worst quartile of SPI and insomnia exhibited increased risk of CLAD (HR 2.18; 95%CI: 1.22-3.89 ; p=0.01 for SPI and HR 1.96; 95%CI 1.09-3.53; p=0.03 for insomnia). Worsening in SPI but not insomnia was also associated with mortality (HR: 1.29; 95%CI: 1.05-1.58; p=0.01). Poor sleep after lung transplant may be a novel predictor of patient reported outcomes, frailty, CLAD, and death with potentially important screening and treatment implications.

Sleep Quality and Related Factors Among Liver Transplant Recipients in Korea: A Cross-Sectional Study

BACKGROUND

Poor sleep quality is common after liver transplantation, which lowers health-related quality of life. However, the detection and management of sleeping difficulties in liver transplant recipients have been limited.

PURPOSE

This study was designed to assess sleep quality in liver transplant recipients in Korea and associated factors, including symptom experience, depression, and family support, using the theory of unpleasant symptoms as a theoretical framework.

METHODS

This cross-sectional study of 149 liver transplant recipients in a Korean tertiary hospital was conducted in 2019. Data were obtained using several structured self-report questionnaires, including the Pittsburgh Sleep Quality Index, Modified Transplant Symptom Occurrence and Symptom Distress Scale, Center for Epidemiologic Studies Depression Scale-Revised, and Family Support Scale. Multiple linear regression was used to determine the factors associated with sleep quality.

RESULTS

The prevalence of sleep disturbance was 55% in the sample. Low sleep quality was associated with being female and with having a higher symptom experience, higher depressive symptoms, and lower family support. In the multiple linear regression analysis, depression and symptom experience was shown to significantly affect sleep quality.

CONCLUSIONS/IMPLICATIONS FOR PRACTICE

The liver transplant recipients in this study reported poor sleep quality. The factors associated with the sleep quality included depression and symptom experience. To enhance sleep quality, interventions designed to reduce depression and symptoms related to liver transplantation should be provided. The results of this study may be used to develop nursing strategies to improve sleep quality in liver transplant recipients.

Incidence and prevalence of depressive, anxiety, and insomnia symptoms among adult liver transplant recipients: A systematic review and meta-analysis

OBJECTIVE

Psychological morbidity among transplant recipients may negatively impact post-transplantation outcomes. Our objectives were to compute pooled incidence and prevalence estimates for depressive, anxiety, and insomnia symptoms among adults who underwent liver transplant.

METHODS

Electronic searches of MEDLINE, PubMed Central, CINAHL, and Google Scholar were carried out from inception to October 2022 to identify observational studies conducted among adult liver transplant recipients which measured depression, anxiety, and/or insomnia. We used the Joanna-Briggs tool for study quality appraisal.

RESULTS

Sixty-five studies (pooled N = 12,183) provided data for meta-analysis. The one-year pooled point prevalence rate for depressive symptoms was 25% (95% Confidence Intervals [CI]: 20% to 30%; I² = 94%; 37 studies; N = 6088) while that of anxiety and insomnia symptoms were 29% (95% CI: 21% to 38%; I² = 96%; 28 studies; N = 4016) and 28% (95% CI: 16% to 43%; I² = 98%; 14 studies; N = 1834), respectively. The findings remained robust across subgroup and sensitivity analyses. Most included studies had low or moderate risk of bias.

CONCLUSIONS

Depressive, anxiety, and insomnia symptoms are commonly prevalent following liver transplantation. Our findings, though limited by high heterogeneity across analyses, have important implications for screening, management, and prevention of psychological morbidity in this group.

SYSTEMATIC REVIEW REGISTRATION

This protocol was submitted for registration with the International Prospective Register of Systematic Reviews (PROSPERO) (CRD 42021276008).

Effect of Sleep Hygiene Education on Sleep Quality in Patients With Liver Transplantation

This study aimed to determine the effects of sleep hygiene education on sleep quality in liver transplant patients. In the literature, the efficacy of various pharmacological methods for reducing poor sleep quality associated with liver transplant patients and studies on nonpharmacological methods are limited. This study was conducted using a quasiexperimental design with a pre- and posttest, and a control group. When the power analysis was made, a sample size with 5% double-sided significance, 95% confidence interval, and 95% ability to represent the population was calculated to have a total of 100 liver transplant patients. The data were collected using a patient information form, and the Richard Campbell Sleep Quality Questionnaire. In the experimental group, the researcher gave a sleep hygiene training for 1 week. No treatment was performed in the control group. To analyze the data, descriptive statistics, a χ2 test, a t test for dependent groups, and a t test for independent groups were used. According to sleep hygiene training follow-ups after liver transplantation, the mean scores of sleep quality was similarly poor, with a statistical significance in the experimental group compared with the control group in all measurements before and after sleep hygiene training (P < .001). The sleep hygiene training applied to liver transplant patients positively affected and decreased the severity of sleep quality.

Cardiovascular Risk after Kidney Transplantation: Causes and Current Approaches to a Relevant Burden

Background. Cardiovascular disease is a frequent complication after kidney transplantation and represents the leading cause of mortality in this population. Material and Methods. We searched for the relevant articles in the National Institutes of Health library of medicine, transplant, cardiologic and nephrological journals. Results. The pathogenesis of cardiovascular disease in kidney transplant is multifactorial. Apart from non-modifiable risk factors, such as age, gender, genetic predisposition and ethnicity, several traditional and non-traditional modifiable risk factors contribute to its development. Traditional factors, such as diabetes, hypertension and dyslipidemia, may be present before and may worsen after transplantation. Immunosuppressants and impaired graft function may strongly influence the exacerbation of these comorbidities. However, in the last years, several studies showed that many other cardiovascular risk factors may be involved in kidney transplantation, including hyperuricemia, inflammation, low klotho and elevated Fibroblast Growth Factor 23 levels, deficient levels of vitamin D, vascular calcifications, anemia and poor physical activity and quality of life. Conclusions. The timely and effective treatment of time-honored and recently discovered modifiable risk factors represent the basis of the prevention of cardiovascular complications in kidney transplantation. Reduction of cardiovascular risk can improve the life expectancy, the quality of life and the allograft function and survival.

A Scoping Review of the Literature on Sleep Quality in Adult Lung Transplant Recipients

Introduction: Lung transplant recipients face challenging postoperative complications and are at risk for poor sleep quality. Sleep quality, as a complex clinical phenomenon, has multiple subjective and objective connotations. Measures and definitions of sleep quality are not standardized. Objective: A scoping review methodology was used to systematically map the relevant literature, provide an overview of available sleep quality measures, and to identify knowledge gaps. Methods: A systematic search of published and gray literature enabled knowledge synthesis of the last 10 years of evidence documenting sleep quality in lung transplant recipients. The search revealed 246 articles with only 12 sources meeting the eligibility criteria. Results: Sources varied in terms of definitions and measures of sleep quality. Subjective, objective, or a combination of both measures were used across the relevant literature with findings confirming that poor sleep quality was common in lung transplant recipients. Significant associations with poor sleep quality included younger age, female gender, exposure to tacrolimus, anxiety, and depression. Discussion: Systematic literature assessing sleep quality in lung transplant recipients is sparse and lacks conceptual and operational definitions. Future research can focus on designing prospective observational studies. Subjective and objective measures for sleep quality need to be validated in lung transplant recipients. Further rigorous research is needed to standardize measures of sleep quality and to further examine potential risk factors that affect sleep after lung transplantation.

Redefining Success After Liver Transplantation: From Mortality Toward Function and Fulfillment

Liver transplantation (LT), the only cure for end-stage liver disease, is a lifesaving, costly, and limited resource. LT recipients (LTRs) are aging with an increasing burden of medical comorbidities. Patient and graft survival rates exceed 70% at 5 years; however, patient-centered health outcomes beyond survival have received relatively little attention. LTRs must have strong self-management skills to navigate health systems, adhere to clinical monitoring, and take complex, multidrug regimens. All of these tasks require formidable cognitive abilities for active learning and problem solving. Yet, LTRs are at higher risk for impaired cognition as a result of the high prevalence of pretransplant hepatic encephalopathy, multiple chronic conditions, alcohol use, physical frailty, sarcopenia, and older age. Cognitive impairment after transplant may persist and has been causally linked to poor self-management skills, worse physical function, and inferior health outcomes in other health care settings, yet its impact after LT is largely unknown. There is a need to study potentially modifiable, posttransplant targets including caregiver support, physical activity, sleep, and treatment adherence to inform future health system responses to promote the long-term health and well-being of LTRs. Prospective, longitudinal data collection that encompasses key sociodemographic, cognitive-behavioral, psychosocial, and medical factors is needed to improve risk prediction and better inform patient and caregiver expectations. Interventions with proactive monitoring, reducing medical complexity, and improved care coordination can be tailored to optimize posttransplant care. We propose a research agenda focused on understudied, potentially modifiable risk factors to improve the long-term health of LTRs. Our conceptual model accounts for cognitive function, caregiver and patient self-management skills, health behaviors, and patient-centered outcomes beyond mortality. We propose actionable health-system, patient, and caregiver-directed interventions to fill knowledge gaps and improve outcomes.

Cohort profile: The Swiss Transplant Cohort Study (STCS): A nationwide longitudinal cohort study of all solid organ recipients in Switzerland

PURPOSE

The Swiss Transplant Cohort Study (STCS) is a prospective multicentre cohort study which started to actively enrol study participants in May 2008. It takes advantage of combining data from all transplant programmes in one unique system to perform comprehensive nationwide reporting and to promote translational and clinical post-transplant outcome research in the framework of Swiss transplantation medicine.

PARTICIPANTS

Over 5500 solid organ transplant recipients have been enrolled in all six Swiss transplant centres by end of 2019, around three-quarter of them for kidney and liver transplants. Ninety-three per cent of all transplanted recipients have consented to study participation, almost all of them (99%) contributed to bio-sampling. The STCS genomic data set includes around 3000 patients.

FINDINGS TO DATE

Detailed clinical and laboratory data in high granularity as well as patient-reported outcomes from transplant recipients and activities in Switzerland are available in the last decade. Interdisciplinary contributions in diverse fields of transplantation medicine such as infectious diseases, genomics, oncology, immunology and psychosocial science have resulted in approximately 70 scientific papers getting published in peer-review journals so far.

FUTURE PLANS

The STCS will deepen its efforts in personalised medicine and digital epidemiology, and will also focus on allocation research and the use of causal inference methods to make complex matters in transplant medicine more understandable and transparent.

Sleep and liver disease: a bidirectional relationship

Sleep is a complex, highly regulated process essential for human health and wellbeing. Increasingly, sleep-wake disturbance has been implicated in the pathogenesis of chronic liver disease, particularly the development and progression of non-alcoholic fatty liver disease and alcohol-related liver disease. Patients with cirrhosis also have a high burden of sleep abnormalities with substantial implications for their quality of life and physical health. This Review summarises the epidemiology and pathophysiology of sleep-wake disturbance in liver disease and discusses the multiple converging pathways leading to abnormal sleeping patterns in patients with cirrhosis. This includes contributions from altered melatonin metabolism, neuromuscular complications, and aberrant thermoregulation. In turn, a vicious cycle is established whereby disrupted sleep can further contribute to liver disease progression. We also begin to unravel the complex, interlinking relationship between sleep-wake disturbance and hepatic encephalopathy, discussing both overlapping and distinct mechanisms and clinical features. Finally, we summarise the current and future therapeutic approaches aiming to improve sleep quality in patients with cirrhosis.

Sleep quality, depressive symptoms, and transplant outcomes: Follow-up analyses from the ADAPT prospective pilot study

BACKGROUND

Previous studies suggested that depressive symptoms and sleep quality may be important for long-term clinical outcomes following cardiothoracic transplant. Few studies, however, have systematically examined objective markers of these behavioral factors among ambulatory transplant recipients, or their association with clinical outcomes.

METHODS

We examined sleep quality and depressive symptoms with subsequent clinical outcomes (hospitalizations and death) in a sample of 66 lung or heart transplant recipients using a single-center, prospective cohort study. Recipients were assessed at approximately 6 months post-transplant and completed one week of actigraphy assessment to examine sleep quality and self-report measures of mood (Centers for Epidemiologic Studies of Depression [CESD]). Recipients were followed for clinical outcomes.

RESULTS

At 6-months following transplantation, recipients spent the majority of daytime activity at a sedentary level (61% of daily activity [SD = 10]) and elevated depressive symptoms were common (subclinical = 17%, mild = 12%, or moderate = 8%). Over a median follow-up of 4.5 years (IQR = 0.9, 5.1), 51 participants (77%) had at least one unplanned hospitalization and 11 (17%) participants died. In addition, sleep efficiency measurements suggested that a subset of participants exhibited suboptimal sleep (mean efficiency = 87% [SD = 7]). Poorer sleep quality, indexed by lower sleep efficiency and greater sleep fragmentation, was associated with greater depressive symptoms (r's = 0.37-0.50, P < .01). Better sleep quality at 6-months (HR = 0.75 [0.60, 0.95], P = .015), including sleep efficiency (HR = 0.74 [0.56, 0.99], P = .041) and sleep fragmentation (HR = 0.71 [0.53, 0.95], P = .020) were associated with lower risk of hospitalization or death. Compared with individuals without elevated depressive symptoms or sleep difficulties, individuals with either factor (HR = 1.72 [1.05, 2.81], P = .031) or both factors (HR = 2.37 [1.35, 4.18], P = .003) exhibited greater risk of clinical events in adjusted analyses.

CONCLUSIONS

Sleep quality is associated with depressive symptoms among cardiothoracic transplant recipients and enhances the prognostic association between biobehavioral risk factors and clinical outcomes.

Pre-transplant Social Adaptability Index and clinical outcomes in renal transplantation: The Swiss Transplant Cohort study

BACKGROUND

The impact of pre-transplant social determinants of health on post-transplant outcomes remains understudied. In the United States, poor clinical outcomes are associated with underprivileged status, as assessed by the Social Adaptability Index (SAI), a composite score of education, employment status, marital status, household income, and substance abuse. Using data from the Swiss Transplant Cohort Study (STCS), we determined the SAI's predictive value regarding two post-transplant outcomes: all-cause mortality and return to dialysis.

METHODS

Between 2012 and 2018, we included adult renal transplant patients (aged ≥ 18 years) with pre-transplant assessment SAI scores, calculated from a STCS Psychosocial Questionnaire. Time to all-cause mortality and return to dialysis were predicted using Cox regression.

RESULTS

Of 1238 included patients (mean age: 53.8 ± 13.2 years; 37.9% female; median follow-up time: 4.4 years [IQR: 2.7]), 93 (7.5%) died and 57 (4.6%) returned to dialysis. The SAI's hazard ratio was 0.94 (95%CI: 0.88-1.01; p = .09) for mortality and 0.93 (95%CI: 0.85-1.02; p = .15) for return to dialysis.

CONCLUSIONS

In contrast to most published studies on social deprivation, analysis of this Swiss sample detected no significant association between SAI score and mortality or return to dialysis.

Sleep quality and its association with health-related quality of life of patients on lung transplantation waitlist in Japan

PURPOSE

Poor quality of sleep is a common feature in patients with various lung diseases and affects their health-related quality of life (HRQL). We evaluated sleep quality and HRQL in patients on the waitlist for lung transplantation in Japan.

METHODS

In this prospective study, patient-reported and physiological data were collected from patients newly registered on the waitlist for lung transplantation in Japan. Sleep quality was evaluated using the Pittsburgh Sleep Quality Index (PSQI) and HRQL using the St. George's Respiratory Questionnaire (SGRQ). The frequency of poor sleep quality, correlations between sleep quality and various clinical parameters, and predictive factors of sleep quality were examined.

RESULTS

Of 193 patients, the three most-frequent indications for lung transplantation were interstitial pneumonia (n = 96), pulmonary complications of hematopoietic stem cell transplantation (n = 25), and pulmonary hypertension (n = 17). Poor sleep quality (PSQI > 5) was observed in 102 patients (53%) and was significantly associated with worse Hospital Anxiety and Depression Score (HADS), worse SGRQ score, worse modified Medical Research Council Dyspnea score, and shorter 6-min walk distance. However, it was not associated with sex, pulmonary function, interstitial pneumonia, or arterial blood gas. Stepwise multiple regression analysis indicated that poor sleep quality was explained significantly by HADS anxiety (23%) and SGRQ Symptoms (10%).

CONCLUSION

Poor sleep quality was found to be common among patients on the lung transplantation waitlist in Japan. The two most significant factors responsible for impaired sleep quality were anxiety and respiratory symptoms. Additional care should be taken to ensuring a better quality of sleep for such patients.

Sleep Quality and Psychosocial Factors in Liver Transplant Recipients at an Outpatient Follow-Up Clinic in China

Background

Sleep disturbance is a common problem in liver transplant recipients, but few studies have confirmed the psychosocial factors associated with sleep quality in patients after liver transplantation. This study aimed to identify the psychosocial factors related to sleep quality among liver transplant patients during outpatient follow-up.

Material/Methods

A retrospective cross-sectional study was performed in 124 liver transplant patients during outpatient follow-up. All participants completed a general demographic questionnaire, the Pittsburgh Sleep Quality Index (PSQI), the Generalized Anxiety Disorder-7 scale (GAD-7), the Patient Health Questionnaire-9 (PHQ-9), and the perceived social support scale (PSSS).

Results

The mean global PSQI score was 6.57 (SD, 4.28), which was significantly higher than the mean score for people with normal sleep quality; 50 (40.3%) recipients were classified as having poor sleep quality (PSQI >7). Among the self-reported sleep problems, 62 (50.0%) participants reported that they had to go to the bathroom at night, 58 (43.5%) woke up in the middle of the night or early morning, 84 (67.7%) reported depression symptoms, and 116 (93.5%) had low-level social support. The global PSQI score was positively correlated with anxiety and depression scores, while the global PSSS score was negatively correlated with anxiety and depression scores (p<0.01). Multiple linear regression analysis showed that the length of the post-liver transplant period, the type of residence, BMI, depressive symptoms, and anxiety symptoms were important factors affecting sleep quality among liver transplant patients (p<0.05).

Conclusions

Our findings showed high prevalence and incidence of poor sleep quality in liver transplant recipients in outpatient follow-up, with significant correlations with anxiety, depression, and social support, and it was affected by multiple factors. This indicates a need for further research on the follow-up results of sleep and the benefits of comprehensive interventions involving psychosocial factors in liver transplant recipients in China.

Sleep quality is associated with psychosocial functioning and health-related quality of life in pediatric transplant recipients

This study examined patient-reported sleep quality in a single-center cross-sectional sample of adolescents with solid organ transplants and evaluated associations between sleep quality, psychosocial functioning (ie, depression/anxiety symptoms), and HRQOL. Health disparities associated with minority race/ethnicity and socioeconomic variables were also examined. Sixty-nine adolescents (M = 16.51 years; SD = 1.63) who received a solid organ transplant (kidney: n = 25; liver: n = 24; heart: n = 20) completed self-report measures of sleep quality, psychosocial functioning, and HRQOL. Adolescent transplant recipients endorsed significantly lower levels of sleep quality (ie, falling asleep) compared with previously published norms of healthy peers (t = -3.60; P ≤ .001). Higher sleep quality was significantly associated with fewer anxiety and depressive symptoms (r = -.31 to -.40), and higher physical and psychosocial HRQOL (r = .33-.43). Adolescents from minority backgrounds had significantly worse sleep quality compared with non-Hispanic Whites. Adolescent transplant recipients, particularly those from minority backgrounds, may be at increased risk for experiencing poor sleep quality. Suboptimal sleep is a risk factor for higher levels of anxiety and depressive symptoms, as well as lower levels of physical and psychosocial HRQOL. Sleep is an important modifiable factor that, if improved, may contribute to lower anxiety/depressive symptoms and better HRQOL in adolescent transplant recipients.