Trajectories of the Prevalence of Sarcopenia in the Pre- and Post-Stroke Periods: A Systematic Review

Coexistence of low body mass index and poor oral health negatively affects activities of daily living, swallowing, and cognition after stroke

AIM

Low body mass index (BMI) and poor oral health are prevalent among older stroke patients and associated with adverse outcomes. However, their combined impact on functional recovery after stroke remains unclear. This study investigated the synergistic effects of low BMI and poor oral health on activities of daily living (ADL) independence, swallowing function, and cognitive status in post-stroke older patients.

METHODS

A retrospective cohort study was conducted on 708 hospitalized post-stroke patients aged ≥70 years. Low BMI was defined as <20 kg/m2, and poor oral health was assessed using the Revised Oral Assessment Guide (ROAG) with a score ≥13 indicating oral problems. The primary outcome was ADL independence (Functional Independence Measure-motor score >78) at discharge. Secondary outcomes included swallowing level (Food Intake Level Scale) and cognitive status (Functional Independence Measure-cognition score). Multiple regression analyses were performed to examine the associations of low BMI, poor oral health, and their combination with outcomes of interest.

RESULTS

The coexistence of low BMI and poor oral health was independently associated with lower odds of achieving ADL independence (odds ratio 0.130, 95% confidence interval [CI] 0.023-0.718), worse swallowing level (B = -0.878, 95% CI -1.280 to -0.476), and poorer cognitive status (B = -1.872, 95% CI -2.960 to -0.784) at discharge, after adjusting for confounders. The combined impact was stronger than either condition alone.

CONCLUSIONS

The coexistence of low BMI and poor oral health exerts a synergistic negative impact on functional recovery in older stroke inpatients. Comprehensive interventions integrating nutritional support, oral management, and rehabilitation are crucial to optimizing outcomes in this vulnerable population. Geriatr Gerontol Int 2024; 24: 1045-1052.

Site-specific skeletal muscle mass and functional prognosis in geriatric stroke patients

BACKGROUND

Evidence is scarce regarding prognostic value of site-specific muscle mass in geriatric stroke survivors. We aim to assess the association between four measures of muscle mass, namely the skeletal muscle mass index of the limbs (SMI), upper limb SMI (USMI), lower limb SMI (LSMI), and trunk muscle mass index (TMI), and the functional prognosis in stroke patients.

METHODS

This study conducted a retrospective cohort analysis involving post-acute stroke inpatients. Muscle mass data were obtained through bioelectrical impedance analysis and computed by dividing each muscle mass by the square of the height. The study outcomes included the Functional Independence Measure (FIM) motor at discharge and FIM-motor gain. Multiple regression analysis was conducted to assess the association between SMI, USMI, LSMI, and TMI with outcomes, while adjusting for confounding factors.

RESULTS

A total of 701 patients (mean age 72.8 years, 374 males) were analyzed. As a result, LSMI (β = 0.089, P = 0.003) and SMI (β = 0.083, P = 0.008) were significantly associated in the FIM-motor at discharge, with LSMI showing a stronger association. USMI (β = 0.019, P = 0.521) and TMI (β = 0.035, P = 0.231) showed no significant association. LSMI (β = 0.124, P = 0.003) and SMI (β = 0.116, P = 0.008) were significantly associated with FIM-motor gain; however, USMI (β = 0.027, P = 0.521) and TMI (β = 0.049, P = 0.231) showed no significant association with FIM-motor gain.

CONCLUSIONS

Differential associations were observed between site-specific muscle mass and functional prognosis in post-stroke patients. Among these, lower limb muscle mass was most strongly associated with activities of daily living (ADL) recovery.

Dual burden of sarcopenia and impaired oral status on activities of daily living, cognition and swallowing outcomes in post-stroke patients

BACKGROUND AND AIMS

Sarcopenia and poor oral health are common in older patients and are associated with negative outcomes. However, evidence of their combined impact on post-stroke rehabilitation outcomes is limited. This study aimed to investigate the combined impact of sarcopenia and impaired oral health on activities of daily living (ADL), cognition, and swallowing outcomes in post-stroke patients.

METHODS

A retrospective cohort study was conducted using 1,012 post-stroke patients (median age 75.6 years; 54.1 % men). Sarcopenia was diagnosed using the Asian Working Group for Sarcopenia 2019 criteria. Poor oral health was assessed using the Revised Oral Assessment Guide (ROAG) with a score ≥13 indicating impaired oral status. Functional outcomes were measured using the Functional Independence Measure (FIM) for ADL and cognition, and the Food Intake Level Scale (FILS) for swallowing status.

RESULTS

The prevalence of sarcopenia was 45.6 % (492/1,080), impaired oral health was 27.5 % (297/1,080), and the coexistence of both conditions was 12.0 % (130/1,080). The coexistence of sarcopenia and impaired oral health was associated with poorer outcomes compared to either condition alone. After adjusting for confounders, the combination of sarcopenia and impaired oral status showed the strongest negative impact on FIM-motor (B=-8.666, 95 % CI -11.484 to -5.847), FIM-cognition (B=-1.122, 95 % CI -1.987 to -0.256), and FILS (B=-0.785, 95 % CI -1.055 to -0.514) scores at discharge.

CONCLUSION

The dual burden of sarcopenia and impaired oral health significantly impacts functional recovery in post-stroke patients. Comprehensive assessments and interventions targeting both conditions may optimize rehabilitation outcomes in this population.

Impact of imaging biomarkers from body composition analysis on outcome of endovascularly treated acute ischemic stroke patients

BACKGROUND

We investigate the association of imaging biomarkers extracted from fully automated body composition analysis (BCA) of computed tomography (CT) angiography images of endovascularly treated acute ischemic stroke (AIS) patients regarding angiographic and clinical outcome.

METHODS

Retrospective analysis of AIS patients treated with mechanical thrombectomy (MT) at three tertiary care-centers between March 2019-January 2022. Baseline demographics, angiographic outcome and clinical outcome evaluated by the modified Rankin Scale (mRS) at discharge were noted. Multiple tissues, such as muscle, bone, and adipose tissue were acquired with a deep-learning-based, fully automated BCA from CT images of the supra-aortic angiography.

RESULTS

A total of 290 stroke patients who underwent MT due to cerebral vessel occlusion in the anterior circulation were included in the study. In the univariate analyses, among all BCA markers, only the lower sarcopenia marker was associated with a poor outcome (P=0.007). It remained an independent predictor for an unfavorable outcome in a logistic regression analysis (OR 0.6, 95% CI 0.3 to 0.9, P=0.044). Fat index (total adipose tissue/bone) and myosteatosis index (inter- and intramuscular adipose tissue/total adipose tissue*100) did not affect clinical outcomes.

CONCLUSION

Acute ischemic stroke patients with a lower sarcopenia marker are at risk for an unfavorable outcome. Imaging biomarkers extracted from BCA can be easily obtained from existing CT images, making it readily available at the beginning of treatment. However, further research is necessary to determine whether sarcopenia provides additional value beyond established outcome predictors. Understanding its role could lead to optimized, individualized treatment plans for post-stroke patients, potentially improving recovery outcomes.

Sarcopenia as a Robust Predictor of Readmission within 6 Months among Individuals Experiencing Acute Stroke

BACKGROUND

Sarcopenia negatively affects the short-term prognosis of hospitalized older adults. However, no evidence currently supports a direct relationship between sarcopenia and readmission among individuals who have experienced an acute stroke. Therefore, we investigated whether sarcopenia is associated with readmission after discharge.

METHODS

This retrospective cohort study included patients who had experienced acute stroke. Sarcopenia was defined as the coexistence of low skeletal muscle mass index (SMI) and grip strength. We applied the log-rank test and Cox proportional hazards regression analysis to analyze whether sarcopenia, low SMI, and low grip strength were associated with readmission within 6 months.

RESULTS

Among 228 included patients (mean age, 72.8 years; 146 males), the prevalence of sarcopenia was 24.6% (n=56; male 17.8%; female 36.6%). Cox proportional hazards regression analysis using the propensity score as a covariate revealed that sarcopenia (hazard ratio [HR]=7.21; 95% confidence interval [CI] 1.45-35.8; p=0.016) and low skeletal muscle mass (HR=7.40; 95% CI 1.14-48.1; p=0.036), but not low grip strength (HR=1.42; 95% CI 0.281-7.21; p=0.670), were significantly associated with readmission for stroke within 6 months.

CONCLUSIONS

Sarcopenia was negatively associated with readmission within 6 months of stroke onset in patients in Japan who had experienced an acute stroke. These findings suggest that the identification of sarcopenia may facilitate prognostic prediction from the acute stage and intervention(s) to prevent rehospitalization.

Association of Sarcopenia and Its Components with Depression Symptoms in Older Patients with Stroke

BACKGROUND

Recent studies have reported an association between sarcopenia and depression symptoms. To date, no reports have investigated the association between sarcopenia and depression symptoms evaluated using the Geriatric Depression Screening Scale (GDS)-15 in patients with stroke. Therefore, this study aimed to investigate the association between sarcopenia and its components and the improvement of depression symptoms in patients with stroke admitted to a convalescent rehabilitation ward.

METHODS

Patients with stroke aged ≥65 years admitted to a convalescent rehabilitation ward were included in the study. Participants were categorized into sarcopenia and non-sarcopenia groups based on the 2019 Asian Working Group for Sarcopenia. Here, depression symptoms were evaluated using the GDS-15, in addition to demographic characteristics. This study's primary outcome was the GDS change from admission to discharge. Multiple regression analysis was performed to investigate the association between GDS change and sarcopenia and its components.

RESULTS

Overall, 118 participants were included, with the mean age of 78.7±8.1 years, and 58 (49%) were classified in the sarcopenia group. Multiple regression analysis showed that sarcopenia (β=-0.283, 95% confidence interval [CI] -1.140 to -0.283, p<0.001) and handgrip strength (β=-0.317, 95% CI -0.162 to -0.014, p=0.021) were independently associated with GDS change.

CONCLUSION

Sarcopenia and handgrip strength were significantly associated with improved depression symptoms in patients with stroke admitted to a convalescent rehabilitation ward. However, further prospective studies should investigate the association between sarcopenia and depression symptoms in patients with stroke.

Low muscle mass in patients with stroke on admission reduces walking ability at discharge

BACKGROUND & AIMS

Reduced skeletal muscle mass may negatively influence postural retention and walking function. This study aimed to examine the influence of the skeletal muscle mass index on walking function in patients with stroke.

METHODS

This study included patients with cerebral infarction aged ≥65 years. The Asian Working Group for Sarcopenia's skeletal muscle mass index criteria were used to classify the participants into the low and high skeletal muscle mass index groups. The patient characteristics of the two groups were compared. The primary and secondary outcome measures were independent walking and walking speed, respectively.

RESULTS

In total, 174 participants were included. There were no significant differences in the length of hospital stay, rehabilitation volume, or functional independence measure score at discharge between the males and females. Multivariate logistic regression analysis revealed that independent walking was independently associated with the skeletal muscle mass index on admission. The SMI, as an explanatory variable, was independently associated with the comfortable and fastest walking speeds. Faster walking was associated with higher skeletal muscle mass indexes on admission for both males and females.

CONCLUSIONS

A low skeletal muscle mass index negatively influences walking function improvement in patients with stroke. A strategy aimed at increasing skeletal muscle mass can have beneficial effects on walking function in patients with stroke.

Low phase angle: A predictor of functional status and discharge disposition in acute stroke older patients

BACKGROUND & AIMS

This study aimed to investigate the effects of low phase angle (PhA) on functional status and discharge disposition during the acute phase in older patients with acute stroke.

METHODS

We included consecutive patients who experienced acute stroke between October 2021 and December 2022. The exclusion criteria included: age<65 years, admission from other than home, death during hospitalization, inability to measure bioelectrical impedance analysis owing to implantation, and missing data. We defined low PhA (<5.28° for male and <4.62° for female) and categorized them into the low PhA group and normal group. The clinical outcomes were functional independence by the modified Rankin Scale (mRS) score (0-2, independence; 3-5, nonindependence) and discharge disposition (home or others). We used multivariate logistic regression analysis to examine the effect of low PhA on the mRS score at discharge and discharge disposition.

RESULTS

Ultimately, a total of 205 patients were included in this analysis. More patients in the low PhA group were unable to be independent (27.7% vs. 66.7%, P < 0.001) and were unable to be discharged home (53.4% vs. 82.5%, P < 0.001) than in the normal group. Logistic regression analysis of the mRS scores showed that baseline low PhA decreased the likelihood of functional independence (odds ratio [OR] = 0.275, P = 0.003) and home discharge (OR = 0.378, P = 0.044).

CONCLUSIONS

Low PhA is a risk factor for low functional status at hospital discharge; it decreases the likelihood of home discharge in older patients with acute stroke.

Sarcopenia Prevalence and Risk Factors Among Older Adults in Bangkok, Thailand: A Cross-Sectional Study

OBJECTIVES

This study aimed to investigate the prevalence of sarcopenia among older Thai adults residing in Bangkok and identify associated risk factors.

METHODS

This cross-sectional study included Thai adults aged ≥60 years. All participants underwent assessments using the Yubi-wakka test, anthropometric measurements, bioelectrical impedance analysis, handgrip strength tests, and physical performance evaluations. Information on demographic characteristics, chronic health conditions, nutritional status, and medication use was also collected. Sarcopenia was diagnosed according to the 2019 Asian Working Group for Sarcopenia criteria. Statistical analyses were performed using the independent t-test, Chi-square test, and logistic regression to identify risk factors.

RESULTS

Among the 600 participants, the overall prevalence of sarcopenia was 19%. The multivariate analysis identified 13 significant risk factors associated with sarcopenia, including age ≥75 years (odds ratio [OR]=10.6, 95% confidence interval [CI]=3.7-30.2), higher education level (year) (OR=0.85, 95% CI=0.74-0.98), lower income level (OR=5.4, 95% CI=1.4-21.4), Barthel index <90 (OR=11.0, 95% CI=3.5-34.5), lower body mass index (OR=0.7, 95% CI=0.6-0.8), low calf circumference (OR=7.6, 95% CI=2.5-23.3), fall in the past year (OR, 3.1; 95% CI, 1.4-6.6), frailty (OR, 2.3; 95% CI, 1.1-4.5), malnutrition (OR=3.5, 95% CI=1.3-9.3), history of stroke (OR=7.5, 95% CI=1.3-41.4), vitamin D deficiency (OR=9.4, 95% CI=1.1-82.5), knee osteoarthritis (OR=6.3, 95% CI=1.57-25.31), and malignancy (OR=4.8, 95% CI=1.01-22.70).

CONCLUSION

This study evaluated the sarcopenia status across a diverse demographic of older Thai adults using comprehensive assessments, and examined the impact of socioeconomic factors and various chronic conditions on the occurrence of sarcopenia.

Muscle mass as a modifier of stress response in acute ischemic stroke patients

Stroke triggers a systemic inflammatory response over the ensuing days after the cerebral insult. The age and comorbidities of the stroke population make them a vulnerable population for low muscle mass and sarcopenia, the latter being another clinical condition that is closely associated with inflammation, as shown by increased levels of pro-inflammatory biomarkers, including neutrophil-to-lymphocyte ratio (NLR). In this study, we evaluated the relationship between post-stroke NLR changes and muscle mass in a prospective cohort of acute ischemic stroke patients (n = 102) enrolled in the Muscle Assessment in Stroke Study Turkey (MASS-TR). Admission lumbar computed tomography images were used to determine the cross-sectional muscle area of skeletal muscles at L3 vertebra level and calculate the skeletal muscle index (SMI). The median (IQR) SMI was 44.7 (39.1-52.5) cm2/m2, and the NLR at admission and follow-up were 4.2 (3.0-10.5) and 9.4 (5.7-16.2), respectively. While there was no relationship between SMI and admission NLR, a significant inverse correlation was observed between SMI and follow-up NLR (r =  - 0.26; P = 0.007). Lower SMI remained significantly associated (P = 0.036) with higher follow-up NLR levels in multivariate analysis. Our findings highlight the importance of muscle mass as a novel factor related to the level of post-stroke stress response.

Association between the Thickness or Area of the Temporal Muscle and Skeletal Muscle Mass in Bioimpedance Analysis

INTRODUCTION

Sarcopenia associated with stroke can significantly impact patient prognosis; however, the current standard diagnostic methods for sarcopenia are rarely used in stroke patients. Therefore, the aim of the current study was to investigate whether the temporal muscle thickness (TMT) or area (TMA) could serve as a surrogate marker for measuring skeletal muscle mass.

METHODS

This retrospective chart review study was conducted on 244 participants from March 2018 to February 2020. The TMT and TMA were measured at the supraorbital roof level using brain CT or T1-weighted MR imaging obtained from participants. The skeletal muscle mass and skeletal muscle index (SMI) and whole-body phase angle (WBPA) at 50 kHz were collected. Pearson correlation analysis was used to assess the relationship between the TMT or TMA and the results of the bioimpedance analysis.

RESULTS

The mean TMT showed significant positive correlations with skeletal muscle mass (male, r = 0.520; female, r = 0.706), SMI (male, r = 0.426; female, r = 0.582), and WBPA (male, r = 0.295; female, r = 0.232). The mean TMA showed significant positive correlations with skeletal muscle mass (male, r = 0.490; female, r = 0.657), SMI (male, r = 0.289; female, r = 0.473), and WBPA (male, r = 0.232; female, r = 0.243).

CONCLUSION

We observed moderate to strong positive correlations between body composition analysis measured by BIA and TMT or TMA, suggesting that TMT or TMA could serve as a reliable surrogate marker for identifying low skeletal muscle mass in cerebrovascular disease.

Impact of possible sarcopenia on functional prognosis in patients with acute stroke with premorbid disability

AIM

How possible sarcopenia affects functional prognosis in patients with premorbid disability remains unclear. This study aimed to compare and investigate the impact of possible sarcopenia at admission on functional outcomes at discharge in patients with acute stroke with and without premorbid disability.

METHODS

This cohort study enrolled patients who were consecutively admitted to a single center for acute stroke. Calf circumference and grip strength were measured within 7 days of admission, and possible sarcopenia was determined using the Asian Working Group for Sarcopenia 2019 criteria. The Functional Independence Measure (FIM) score at discharge during the acute phase was the primary outcome. To examine the impact of possible sarcopenia on FIM scores at discharge, patients were divided into two groups according to being with or without premorbid disability according to the modified Rankin Scale, and multiple linear regression analysis was performed in each group.

RESULTS

This study included 456 patients with acute stroke (median age, 80 years). In the premorbid-disability group (n = 166), possible sarcopenia was present in 140 patients (84%). Patients without possible sarcopenia had significantly higher FIM scores at discharge compared with those with possible sarcopenia (P < 0.001). However, multiple linear regression analysis showed that possible sarcopenia was not associated with FIM scores at discharge in the premorbid-disability group (β = -0.054, P = 0.346).

CONCLUSIONS

The results of this study demonstrated that a high rate of possible sarcopenia was observed in patients with stroke with premorbid disability; however, this did not affect functional prognosis. Geriatr Gerontol Int 2024; 24: 359-363.

Longitudinal associations between stroke-related neurologic deficits and course of basic activities of daily living up to six months after stroke

PURPOSE

To investigate the course of basic activities of daily living (ADL) from admission up to six months after the stroke and the longitudinal associations between stroke-related neurological deficits at admission to the stroke unit and course of basic ADL.

MATERIALS AND METHODS

180 individuals with a first-ever stroke were assessed at admission to the stroke unit and at follow-ups of three and six months. Stroke-related neurological deficits were assessed at admission with the National Institutes of Stroke Scale (NIHSS). Independence in basic ADL was assessed at admission and three and six months after the stroke by the Modified Barthel Index (MBI). Generalized Estimating Equations (GEE) were performed.

RESULTS

Dependence in basic ADL reduced overtime, with most changes occurring over the first three months. Individuals, who had moderate/severe stroke-related neurological deficits (NIHSS ≥6) at admission, had higher chances of becoming more dependent in activities related to feeding (OR:1.27;95%CI = 1.03-1.55;p = 0.021), bathing (OR:1.30;95%CI = 1.11-1.50;p = 0.0005), dressing (OR:1.19;95%CI = 1.04-1.36;p = 0.010), transfers (OR:1.24;95%CI = 1.05-1.46;p = 0.0072), stair climbing (OR:1.46;95%CI = 1.27-1.66;p < 0.0001), and ambulation (OR:1.21;95%CI = 1.02-1.43;p < 0.0001).

CONCLUSIONS

Decreases in dependence in basic ADL occurred mainly over three months after the stroke and showed different patterns for specific ADL. Baseline moderate/severe stroke-related neurological deficits were associated with poor functional status in basic ADL over the follow-up period.

Muscle weakness is more strongly associated with functional outcomes in patients with stroke than sarcopenia or muscle wasting: an observational study

BACKGROUND

Stroke-related sarcopenia is an important prognosis factor and an intervention target for improving outcomes in patients with stroke.

AIM

This study aimed to identify the association between sarcopenia, possible sarcopenia, muscle weakness, muscle mass and calf circumference, and the functional outcomes 3 months after stroke.

METHODS

In this single-centre prospective observational study, muscle strength, muscle mass, and calf circumference were measured in patients with acute stroke at hospital discharge. Diagnosis of sarcopenia, possible sarcopenia, muscle weakness, low muscle mass, and low calf circumference were defined according to the 2019 Asian Working Group for Sarcopenia criteria. The primary outcome measure was the modified Rankin Scale (mRS) score at 3 months, with an mRS score of 3 or higher indicating a poor outcome. Logistic regression analysis was conducted to examine independent associations between each assessment and functional outcomes.

RESULTS

A total of 247 patients (median age: 73 years) were included in this study. The prevalence of sarcopenia was 28% (n = 70), and in the adjusted model, sarcopenia (aOR = 2.60, 95% CI 1.07-6.31, p = 0.034), muscle weakness (aOR = 3.40, 95% CI 1.36-8.52, p = 0.009), and low muscle mass (aOR = 2.61, 95% CI 1.04-6.52) were significantly associated with poor functional outcome. Nevertheless, other evaluations did not demonstrate an independent association with the outcome.

CONCLUSION

Sarcopenia, muscle weakness, and low muscle mass were found to be independently associated with functional outcomes 3 months after stroke, and muscle weakness exhibited the strongest association with outcomes among them.

Change in phase angle is associated with improvement in activities of daily living and muscle function in patients with acute stroke

PURPOSE

The phase angle (PhA) is a simple index that reflects nutritional status and muscle quality. This study aimed to investigate the association between PhA changes and activities of daily living (ADL), muscle strength, and muscle mass in patients with acute stroke.

METHODS

This retrospective, observational, cross-sectional study included patients hospitalized for acute stroke. The primary outcome was functional independence measure (FIM) of motor gain. The secondary outcomes were changes in handgrip strength and skeletal muscle mass index (SMI) during hospitalization. Multivariate analysis was used to examine whether PhA changes were associated with outcomes, after adjusting for potential confounders.

RESULTS

Hundred and sixty one subjects (mean age 74.6 years, 92 men) were included in the study. Multivariate analysis showed that PhA change was significantly and positively correlated with the gain in FIM motor scores, both for men (β = 0.634, p < 0.001) and women (β = 0.660, p < 0.001). Furthermore, there were significant associations between PhA change and changes in handgrip strength for men (β = 0.222, p = 0.030) and women (β = 0.491, p < 0.001), as well as SMI for men (β = 0.556, p < 0.001) and women (β = 0.290, p = 0.025).

CONCLUSIONS

An increased phase angle was positively associated with ADL, muscle strength, and muscle mass at discharge in patients with acute stroke.

Hospital-associated sarcopenia and the preventive effect of high energy intake along with intensive rehabilitation in patients with acute stroke

OBJECTIVES

Hospital-associated sarcopenia is prevalent and associated with poor outcomes in acutely admitted patients. Prevention of developing sarcopenia during hospitalization is an important factor in stroke management. Therefore, this study aimed to investigate whether energy intake and rehabilitation duration contribute to the prevention of hospital-associated sarcopenia in patients with acute stroke.

METHODS

Patients with acute stroke were included in this study. Energy intake during the first week of hospitalization was classified as "high" or "low" based on the reported cutoff value. Rehabilitation time during hospitalization was classified as "intense" or "mild" based on the median. The four groups were compared based on the combinations of high or low energy intake and intense or mild rehabilitation. The primary outcome was the development of sarcopenia during hospitalization. The secondary outcome was the Functional Independence Measure motor item gain during hospitalization. Multivariate analysis was performed with the primary or secondary outcome as the dependent variable and the effect of each group on the outcome was examined.

RESULTS

A total of 112 participants (mean age = 70.6 y; 63 men) were included in the study. Multivariate analysis found that high × intense (odds ratio = 0.113; P = 0.041) was independently associated with the development of sarcopenia during hospitalization (i.e., hospital-related sarcopenia). High × intense (β = 0.395; P < 0.001) was independently associated with the gain of Functional Independence Measure motor items.

CONCLUSIONS

In patients with acute stroke, the combination of high energy intake and adequate rehabilitation time is associated with prevention of hospital-associated sarcopenia.

Advances in the beneficial effects of nutrition on stroke-related Sarcopenia: A narrative review

Stroke is one of the most common causes of disability in adults. Sarcopenia is a syndrome characterized by progressive systemic muscle loss and functional decline. The decrease in skeletal muscle mass and muscle function throughout the body after stroke cannot be explained by neurological motor disorders due to brain injury alone, it is considered to be a secondary sarcopenia known as stroke-related sarcopenia. Mounting evidences showed that stroke-related sarcopenia might promote the occurrence and development of sarcopenia through various pathogenesis such as muscle atrophy, dysphagia, inflammation, and malnutrition, etc. At present, the main indicators used to assess malnutrition in patients with stroke-related sarcopenia include temporalis muscle thickness, calf circumference, phase angle, geriatric nutritional risk index and mini-nutritional assessment short-form, etc. Currently, there is no particularly effective method to curb its progression, but supplementation with essential amino acids, whey protein combined with vitamin D, high energy diet, avoiding Polypharmacy, as well as increasing physical activity level and reducing sedentary lifestyle may improve the malnutrition status of stroke patients, and increase the muscle mass and skeletal muscle index, further delay or even prevent the development of stroke-related sarcopenia. This article reviews the latest research progress on the characteristics, epidemiology, pathogenesis and the role of nutrition in stroke-related sarcopenia, so as to provide reference for the clinical treatment and rehabilitation of stroke-related sarcopenia.

Association between pre-stroke sarcopenia risk and stroke-associated infection in older people with acute ischemic stroke

Background

Stroke-associated infection (SAI) is a common complication after a stroke. The incidence of infection was higher in people with sarcopenia than in the general population. However, the relationship between pre-stroke sarcopenia risk and SAI in older patients has not been confirmed. This study aimed to investigate the association between pre-stroke sarcopenia risk and SAI in older patients with acute ischemic stroke (AIS).

Methods

This retrospective study was conducted by the Peking University People's Hospital. We evaluated the pre-stroke sarcopenia risk by applying the SARC-F questionnaire. Multivariate logistic regression was applied to explore the association between pre-stroke sarcopenia risk and SAI.

Results

A total of 1,002 elder patients with AIS (592 men; 72.9 ± 8.6 years) were enrolled in our study. Pre-stroke sarcopenia risk was found in 29.1% of the cohort. The proportion of patients with pre-stroke sarcopenia risk was larger in the SAI group than in the non-SAI group (43.2 vs. 25.3%, p   < 0.001). In multivariate logistic analysis, pre-stroke sarcopenia risk was shown to be independently associated with SAI (OR = 1.454, 95% CI: 1.008-2.097, p = 0.045) after adjusting for potential factors. This association remained consistent across the subgroups based on age, sex, body mass index, smoking status, drinking status, diabetes, hypertension, and dyslipidemia.

Conclusion

Pre-stroke sarcopenia risk was independently associated with SAI in older patients with AIS. Our findings highlight the significance of pre-stroke sarcopenia identification in the prevention and management of SAI in this population.