Clinical Geriatrics
Published: 2020-10-15

Quality of life, hospitalisation and sarcopenia among the elderly: a systematic review

Centre for Physiotherapy Studies, Faculty of Health Sciences, Universiti Teknologi MARA Selangor, Puncak Alam Campus, 42300 Puncak Alam, Selangor Malaysia; Kuala Lumpur Hospital, Ministry of Health, Malaysia
Centre for Physiotherapy Studies, Faculty of Health Sciences, Universiti Teknologi MARA Selangor, Puncak Alam Campus, Puncak Alam, Selangor Malaysia
Kuala Lumpur Hospital, Ministry of Health, Malaysia
elderly hospitalisation quality of life sarcopenia

Abstract

Introduction. Sarcopenia has been demonstrated to affect the quality of life (QoL) of hospitalised elderly. However, no convincing evidence for the best method for measuring sarcopenia in hospitalised elderly is available. The current review aims to investigate the common outcome measures used to measure QoL and sarcopenia in hospitalised elderly.
Method. A systematic search of the literature was conducted manually and by using databases, such as Scopus, Web of Science, and PubMed, with various search terms, such as “quality of life,” “health-related quality of life”, “elderly”, “older persons”, “sarcopenia”, and “sarcopenic”. Two researchers independently assessed the studies for eligibility. Studies included in the review were written in the English language and indexed journals published between 2015 and 2019.
Results. A total of 400 studies were retrieved; among which, 5 articles were included in the review. The review found that various sarcopenia measures were applied as follows: two studies, skeletal muscle index; one study, muscle cross-sectional area; one study, SARC-F (sluggishness, assistance in walking, rise from a chair, climb stairs, falls) questionnaire;
and one study, the algorithm of the European Working Group for Sarcopenia in Older People. The outcome measures for QoL that were used in the studies included the 36-item short-form survey, EuroQoL-5 dimension, Kidney Disease Quality of Life-Short Form, and CASP-12 (control, autonomy, self-realization, pleasure) scale. Mixed results were found in the relationship of QoL with hospitalisation and sarcopenia.
Conclusions. Inconsistent findings were found for the relationship between QoL and sarcopenia probably because of the different measures used to assess sarcopenia and QoL of the elderly. The results highlight the importance of conducting a further study on QoL among the elderly with sarcopenia, particularly those who were hospitalised using the currently recommended tool for assessing sarcopenia. Such research may promote patient-centered care and improve QoL by incorporating the concept of QoL into geriatric rehabilitation.

INTRODUCTION

With the increasing aging population, sarcopenia may become a major issue that requires special attention among healthcare providers. Sarcopenia is a muscular disease characterised by low muscle strength surpassing the role of low muscle mass as a principal element 1. This condition affects the quality of life (QoL) and increases the mortality rate among the elderly 2. Elderly with progressive sarcopenia may exhibit poor functional status, which affects their QoL, particularly elderly hospitalised due to chronic illnesses. Various studies have shown that the prevalence of sarcopenia is critically high among hospitalised elderly. Approximately 21.8% of sarcopenia has been reported in a multispecialty hospital 3, and another recent study found a prevalence of sarcopenia reaching as high as 31% in the acute geriatric ward. Elderly with sarcopenia who are hospitalised maybe exposed to more hazards than those without sarcopenia 5. Few studies have argued that the surrounding environment in a hospital may cause various complications in relation to sarcopenia 6-8.

Regardless of the current status of sarcopenia and the comorbidity of the elderly, optimal QoL should be the ultimate aim of healthcare provision to be delivered to vulnerable individuals. QoL is defined by the World Health Organization as an individual’s acuity in life in relation to their culture and value systems and relative to their goals, expectations, standards, and concerns 9.

Despite the increasing interest in studying sarcopenia, limited studies have focused on sarcopenia among the hospitalized elderly 10-14. This could be because, sarcopenia has been inconsistently defined or determined as various outcome measures have been applied to different settings for the elderly population. In addition, QoL among the elderly with sarcopenia is inconsistently determined 12,13,15. The results of previous studies may be inapplicable to the hospitalised elderly due to the presence of comorbidities and progressive functional decline. Therefore, further studies are necessary to understand how QoL can be affected by the presence of sarcopenia among the elderly who are at risk of hospitalisation. This understanding may guide the incorporation of QoL into promoting patient-centered care as part of a geriatric rehabilitation program.

This review attempts to answer the following research questions. 1) What are the commonly used outcome measures for assessing sarcopenia and QoL for hospitalised elderly? 2) Is there a relationship between QoL and sarcopenia among the elderly who were hospitalised or at risk of hospitalisation? Accordingly, this study reviews the existing literature to describe the current state of QoL of elderly with sarcopenia who were hospitalised or at risk of hospitalisation.

METHOD

LITERATURE SEARCH

A thorough search for eligible studies was initiated by entering relevant keywords in related databases, such as Scopus, Web of Science, and PubMed, and via manual search, as shown in Table I. The review process was reported on the basis of the outline stated in the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocols (Fig. 1).

PRISMA was applied because it offers three exclusive advantages: 1) it defines clear research questions, permitting a systematic research; 2) it identifies the inclusion and exclusion criteria; and 3) it attempts to examine a large database of scientific literature in a defined time 16. The PRISMA statement allows for a rigorous search of terms related to QoL, hospitalisation, and sarcopenia among the elderly.

THE DATA SEARCH

Data search involved four phases.

Phase 1 – Identification: the relevant keywords listed in Table I were searched to identify articles in the database. The search was restricted to articles published from 2015 to 2019. The keywords used in the search process were identified during this phase.

Phase 2 – Screening: in this phase, the selection criteria (Tab. II) were used to find suitable and related articles in the review process. First, only articles with empirical data were selected in terms of literature type. Review articles, book series, books, chapters in book, and conference proceedings were excluded. Second, to avoid any misunderstanding and difficulty in translation, the search excluded non-English publications and focused only on articles published in English. Third, a period of 5 years was set as the timeline (between 2015 and 2019), which is adequate to cover the evolution of research and related publications.

Phase 3 – Eligibility: the selected articles were reviewed in this phase, and any articles that did not meet the selection criteria were excluded.

Phase 4 – Articles are ready for analysis: articles that met the inclusion and exclusion criteria were prepared for analysis.

DATA ANALYTIC STRATEGY

The remaining articles were assessed and analyzed. Specific studies that responded to the formulated questions were evaluated. The data were extracted by first reading the abstracts, and then the full articles (in-depth) were read to identify appropriate themes and subthemes. All the authors developed the research review approach. Initial screening was undertaken by one researcher (AN) and then checked by another (MJ). Different views on inclusion were discussed until an agreement was reached. One of the researchers (AN) extracted the following data from the selected studies: study sample, measurements, recommendations, and major results. The extracted data were checked and corrections were made where necessary by the other researcher (RMR). All the researchers contributed to the synthesis of the data.

RESULTS

A total of 400 studies were identified through electronic database and manual searches (Fig. 1). Among these studies, 2 duplicates were removed. Therefore, 398 articles were screened on the basis of their titles and abstracts by two independent reviewers. Only 5 studies met the inclusion criteria (Tab. III). All the studies were from 2015 to 2018. The studies were performed from multiple regions (USA, Canada, Brazil, Korea, and Taiwan).

The mean age of the participants differed. The mean age in two studies was below 60 years old 17,18, while the mean in the other studies was above 60 years old. The sample size remarkably varied from 170 to 4937 participants. The participants for the selected studies were non-institutionalised elderly with various conditions 19,20, one study on end-stage liver disease 18, one study on transplant candidates 17, and one study on the elderly with maintenance dialysis 21.

The diagnosis of sarcopenia varied among the studies. Two studies identified sarcopenia through the skeletal muscle index 18,19. One study used muscle cross-sectional area 17, and another study used the SARC-F (sluggishness, assistance in walking, rise from a chair, climb stairs, falls) questionnaire 13. Another study applied the algorithm of the European Working Group for Sarcopenia in Older People (EWGSOP) 21. The outcome measures for QoL included the 36-item short-form survey (SF 36) 17,18, EuroQoL-5 dimension (EQ-5D) 19, Kidney Disease Quality of Life-Short Form 21, and CASP-12 (control, autonomy, self-realization, pleasure) scale 20. Additional parameters, namely, the six-minute walk test (6MWT) 17,18, brief symptom rating scale (BSRS) 20, and nutritional status using body fat index 21, were included in some studies.

QOL AND HOSPITALISATION AMONG ELDERLY WITH SARCOPENIA

From Table IV, mixed results were obtained on the relationships of QoL with hospitalisation and sarcopenia among the elderly. Yadav et al. 18 found no significant relationship between QoL and the physical component score (p = 0.71) and mental component score (p = 0.66) among hospitalised elderly with and without sarcopenia. Similarly, Rozenberg et al. 17 reported that muscle cross-sectional area was not associated with QoL but with hospital stay.

Giglio et al. 21 found that low muscle strength, as one of the indicators for sarcopenia, was associated with the worse QoL domains based on the Kidney Disease Quality of Life-Short Form. In addition, they also found that low muscle strength and the presence of sarcopenia were associated with risk of hospitalisation. Sun et al. 19 reported a significant association between sarcopenia and worse QOL in men and women with sarcopenia. A significant difference was found in EQ-5D among hospitalised elderly with and without sarcopenia for both males and females (p = 0.01 and 0.03, respectively). Wu et al. 20 demonstrated that sarcopenia was associated with overall hospitalisation in 4 years and QoL in years 2 and 4 during the study period.

DISCUSSION

To the authors’ knowledge, this study is the first attempt to systematically review sarcopenia and QoL among hospitalised elderly. The results of the review showed inconsistent findings on the current state of sarcopenia, QoL, and hospitalisation of the elderly. Studies that may answer the current research questions are limited. Only five studies satisfied the inclusion criteria probably due to the restricted inclusion criteria, i.e., only studies from 2014 to 2019 were included, and the keyword entered should include hospitalisation. This review focuses on hospitalised elderly because of the limited studies on this group. In addition, sarcopenia has been regarded as a new geriatric “giant” in recent years because of its high prevalence 1,22,23.

The studies included in this review were diverse in terms of design (cohort, retrospective, cross-sectional, and observational longitudinal studies), included participants (patients with end-stage liver disease, elderly on maintenance dialysis, and elderly individuals), types of outcome measure, and methods for diagnosing sarcopenia. These diversities may have potentially contributed to the inconsistency in the findings for QoL and hospitalisation among the elderly with sarcopenia. The presence of different comorbidities and the level of functions among the hospitalised may explain the diversity in patients recruited for a specific study because patients with established diseases may also present with various geriatric syndromes. The limited studies among hospitalised elderly can be due to the complex process in which the awareness and integrity of the researcher is the key to upholding the principle of non-exploitation 24. Furthermore, previous elderly care was focused on disease management rather than improving the patient’s functional status 25 because sarcopenia is considered a limiting factor for the ability to function optimally.

Reports obtained from this review showed a mixed result of QoL and hospitalisation among elderly with sarcopenia. The variation may be due to the considerable differences in the sample size in the reviewed studies. Studies by Sun et al. 19 and Wu et. 20 had positive findings because of the large sample size. Adequate sample size is required to distinguish meaningful differences 26. Two recent studies found that QoL is negatively associated with sarcopenia 27,28, indicating that the occurrence of sarcopenia may deteriorate QoL of the elderly. However, this finding has to be considered with precaution because whether the presence of sarcopenia has already occurred even before the elderly were hospitalized or whether sarcopenia can be influenced by other factors remains unknown. Furthermore, the elderly may perceive their QoL as poor while in the hospital because the hospital environment and their current disease condition may influence their psychological well-being. For example, one study showed that depression is highly prevalent among hospitalised elderly 29. Thus, the measurement of QoL should consider a more sensitive tool that can accurately measure any changes within a short duration.

The current review also found that tools for measuring QoL were not uniform and varied among the studies. Giglio et al. 14 used a disease-specific for QoL measure, whereas the other studies used generic tools. The studies included in this review were conducted in different countries with diverse levels of income. Korea and Taiwan were categorised as low-income countries, while Brazil, USA, and Canada were categorized as middle/upper-income countries. These income categories may result in differences in the socioeconomic perspective among the participants of the reviewed studies, which in turn, influence their sarcopenia level 30. The measurement of QoL in nearly all the reviewed studies were performed only once, except for Wu et al. 20 who measured QoL twice on years 2 and 4. Repeated measures may be useful to follow up the elderly with sarcopenia to determine whether their QoL will improve or may further deteriorate with time. In addition, following up the measurement of QoL is rational because the elderly may further deteriorate not because of the changes in the physical environment but also due to progressive aging changes and psychological effects after hospitalisation. A previous study showed that a high QoL upon admission is associated with low risk of mortality and functional decline at 3 months after admission 31.

The different methods for assessing sarcopenia may also lead to the inconsistent findings in QoL and hospitalisation for the elderly. With an enhanced understanding on the identification of sarcopenia, a new algorithm by EWGSOP2 was introduced recently 1. This algorithm outlined the process for screening and assessing sarcopenia using the SARC-F questionnaire, muscle strength, muscle quality, and physical performance to determine the presence and severity of sarcopenia. The new algorithm may be the best tool for measuring sarcopenia among hospitalised elderly because the components of its indices are pertinent to the functional status of the elderly. However, none of the studies included in the current review have fulfilled the EWGSOP2 algorithm.

IMPLICATIONS AND LIMITATIONS OF THE STUDY

From the findings of the current systematic review, the assessment of sarcopenia should follow the recommended tools and measurements in the current guideline of the EWGSOP2 algorithm. We also recommend that the measurement of QoL should be repeated at least two times after hospital discharge to detect any changes, particularly in the early episode. In addition, a more sensitive QoL measure should be implemented for the frail elderly. For example, the use of EQ-5D has been shown to provide means of risk stratification and may ultimately guide individuals, their families, and professionals in making treatment decisions during hospitalisation 31.

One of the limitations of this study is the small number of studies (only five related reports) included in the review. Thus, additional studies on QoL are necessary to evaluate QoL among hospitalised elderly with sarcopenia. Then, meta-analysis should be performed to examine the effect or trend of current information on hospitalised and post-hospitalised elderly.

CONCLUSIONS

This systematic review shows that there is a lack of studies regarding QoL and hospitalisation among the elderly with sarcopenia. In the studies that were reviewed, there were inconsistent findings on QoL among hospitalised elderly. This could be due to differences in the study design, participants included, types of outcome measure and methods for assessing sarcopenia. Further studies are needed using the current classification for sarcopenia and valid tools for measuring QoL.

Figures and tables

Figure 1.A PRISMA flow diagram for the systematic review process.

Databases Key words used
Scopus TITLE-ABS-KEY ((“Quality of life” OR “Health-related quality of life” OR health) AND (hospitali*ed OR hospitali*ation) AND (elderly OR aged OR seniors OR geriatric OR “Older person”) AND (sarcopenia OR sarcopenic))
Web of Science TS = ((“Quality of life” OR “Health-related quality of life” OR health) AND (hospitali*ed OR hospitali*ation) AND (elderly OR aged OR seniors OR geriatric OR “Older person”) AND (sarcopenia OR sarcopenic))
Pubmed ((((((“quality of life”) OR “health-related quality of life”) OR health)) AND ((((hospitalised) OR hospitalised) OR hospitalisation) OR hospitalisation)) AND (((((elderly) OR aged) OR seniors) OR geriatric) OR “Older person”)) AND ((sarcopenia) OR sarcopenic)
Table I.Keywords and searching information strategy.
Criterion Eligibility Exclusion
Literature type Indexed journal (research articles) Non-indexed journals, systematic review journals, chapter in book, conference proceeding
Language English Non-English
Time-line Between 2015-2019 < 2014
Table II.Inclusion and exclusion criteria.
Authors Design Country Sample size Mean age (years) Participants Measures of sarcopenia Quality of life measures Other tests
Yadav et al. 18 Not mentioned USA 213Male: 129Female: 84 55.3 ± 8.6 Patients with End Stage Liver Disease (ESLD) listed for Liver Transplant (LT). Skeletal Muscle Index SF36 Six Minute Walk Test (6MWT)
Wu et al. 20 Prospective cohort study, random sampling Taiwan 670Male: 340Female: 330 76.1 ± 6.36 Elderly resident who had undergone annual health examination. SARC-F questionnaire CASP-12 scale (control, autonomy, self-realization, pleasure (control, autonomy, self-realization, pressure) Brief Symptom Rating Scale (BSRS)
Rozenberg et al. 17 Retrospective cohort study Canada 527Male: 283Female: 244 Median age: 55 IQR (42-62) 527 lung transplant candidates Muscle cross sectional area (CSA) SF36 Six Minute Walk Test (6MWT)
Sun et al. 19 Cross-sectional study Korea 4,937Male: 2160Female: 2777 Men =72.6 ± 0.58;Women =72.1 ± 0.94 Older people who underwent a DXA scan Skeletal Muscle Index EuroQoL-5 Dimension (EQ-5D) -
Giglio et al. 21 Multicenter observational longitudinal study Brazil 170Male: 111Female: 59 70 ± 7.6 Elderly on Maintenance Dialysis European Working Group for Sarcopenia in Older People (EWGSOP) Kidney Disease Quality of Life-Short Form Nutritional status (Body Fat Index)
Table III.Articles selected for analysis.
Authors Quality of life measures Summary of findings
Yadav et al. 18 HRQoL, SF36 questionnaire Sarcopenia did not correlate with PCS score (r = 0.03, p = 0.71) and MCS score (r = 0.03, p = 0.66).
Wu et al. 20 CASP-12 Chinese Taiwan version Sarcopenia was associated with overall hospitalisation in 4 years (p = 0.004), QoL in year 2 (p < 0.01) and QoL in year 4 (p < 0.001) during the study period.
Rozenberg et al. 17 HRQoL, SF36 questionnaire Muscle cross-sectional area (CSA) was associated with pre-transplant 6MWD but not health-related QoL.Muscle CSA (per 10 cm2 difference) was associated with shorter hospital stay [0.7 median days 95% CI (0.2-1.3)].
Giglio et al. 21 Kidney disease quality of life-short form Low muscle strength was associated with worse QoL domains (p < 0.05).Low muscle strength (RR 1.92, 95% CI = 1.38-2.57) and with sarcopenia (RR 2.07) 95% CI = 1.48-2.88) were associated with a higher RR for hospitalisation events, even after adjusting for age, gender, dialysis vintage and DM.
Sun et al. 19 EuroQoL-5 dimension (EQ-5D) After adjusting for age, BMI and total body fat mass, there was a significant association between sarcopenia and worse EQ-VAS and EQ-5D index scores in men and women.
Table IV.Analysis of quality of life and hospitalisation in elderly with sarcopenia.

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Affiliations

Adha Nawawi

Centre for Physiotherapy Studies, Faculty of Health Sciences, Universiti Teknologi MARA Selangor, Puncak Alam Campus, 42300 Puncak Alam, Selangor Malaysia; Kuala Lumpur Hospital, Ministry of Health, Malaysia

Maria Justine

Centre for Physiotherapy Studies, Faculty of Health Sciences, Universiti Teknologi MARA Selangor, Puncak Alam Campus, Puncak Alam, Selangor Malaysia

Rizah Mazzuin Razali

Kuala Lumpur Hospital, Ministry of Health, Malaysia

Copyright

© Società Italiana di Gerontologia e Geriatria (SIGG) , 2020

How to Cite

[1]
Nawawi, A., Justine, M. and Mazzuin Razali, R. 2020. Quality of life, hospitalisation and sarcopenia among the elderly: a systematic review. JOURNAL OF GERONTOLOGY AND GERIATRICS. (Oct. 2020). DOI:https://doi.org/10.36150/2499-6564-340.
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