The relationship between dysphagia and frailty among Chinese hospitalized older patients: a serial mediation model through self-perceived oral health and self-reported nutritional status

BACKGROUND

Frailty contributes to adverse outcomes in older adults and places a heavy burden on healthcare resources. Dysphagia is associated with frailty, but the mechanisms by which dysphagia affects frailty in older adults are unclear. This study aimed to investigate a serial mediating effect of self-perceived oral health and self-reported nutritional status in the relationship between dysphagia and frailty among hospitalized older patients in China.

METHODS

This cross-sectional study included 1200 patients aged ≥ 65 years in the Department of Geriatrics, Shaanxi Provincial People's Hospital. A structured face-to-face interview was used to survey the following questionnaires: General Information Questionnaire, Tilburg Frailty Indicators (TFI), Eating Assessment Tool-10 (EAT-10), 30mL Water Swallow Test (WST), Geriatric Oral Health Assessment Index (GOHAI), and Short-Form Mini-Nutritional Assessment (MNA-SF). A total of 980 participants with complete data were included in the analysis. Statistical analysis was performed using SPSS 26.0 and Amos 28.0 software. Spearman's correlation analysis was used for correlation analysis of study variables. The results of the multivariate linear regression analysis for frailty were used as covariates in the mediation analysis, and the structural equation model (SEM) was used to analyze the mediating effects among the study variables.

RESULTS

Dysphagia, self-perceived oral health, self-reported nutritional status, and frailty were significantly correlated (P<0.001). Dysphagia was found to directly affect frailty (β = 0.161, 95%CI = 0.089 to 0.235) and through three significant mediation pathways: (1) the path through self-perceived oral health (β = 0.169, 95%CI = 0.120 to 0.221), accounting for 36.98% of the total effect; (2) the path through self-reported nutritional status (β = 0.050, 95%CI = 0.023 to 0.082), accounting for 10.94% of the total effect; (3) the path through self-perceived oral health and self-reported nutritional status (β = 0.077, 95%CI = 0.058 to 0.102), accounting for 16.85% of the total effect. The total mediation effect was 64.77%.

CONCLUSIONS

This study indicated that dysphagia was significantly associated with frailty. Self-perceived oral health and self-reported nutritional status were serial mediators of this relationship. Improving the oral health and nutritional status of hospitalized older patients may prevent or delay the frailty caused by dysphagia.

General self-efficacy and frailty in hospitalized older patients: The mediating effect of loneliness

This study aimed to explore the relationship between general self-efficacy and frailty in hospitalized older adults with chronic diseases, and to examine the mediating role of loneliness. A total of 327 hospitalized older patients aged 60 years or above with chronic diseases were recruited. Cross-sectional data on the patients' general self-efficacy, frailty and loneliness were collected using questionnaires. The PROCESS macro of the bias correction bootstrapping method was used to test the mediation model. The results showed that the significant mediating role of loneliness between general self-efficacy and frailty (B = -0.735, 95% CI [-0.923, -0.564]) explained 42.4% of the total effect of general self-efficacy on frailty. These findings highlighted the importance of loneliness in older patients with chronic diseases in hospital, especially those with low general self-efficacy.

The opinions and experiences of nurses on frailty screening among older hospitalized patients. An exploratory study

Background

Routine screening for frailty at admission by nurses may be useful to detect geriatric risks and problems at an early stage. However, the added value of this screening is not clear yet. Information about the opinions and attitudes of nurses towards this screening is also lacking. As they have a crucial role in conducting this screening, an exploratory study was performed to examine hospital nurses’ opinions and perspectives about this screening and how it influences their daily work.

Methods

A qualitative, exploratory approach was employed, using semi-structured interviews with 13 nurses working on different general medical wards (surgical and internal medicine) in three Dutch hospitals. Frailty screening had been implemented for several years in these hospitals.

Results

The participating nurses reported that frailty screening can be useful to structure their work, create more awareness of frail older patients and as starting point for pro-active nursing care. At the same time, they assess their clinical view as more important than the results of a standard screening tool. The nurses hardly used the overall screening scores, but were particularly interested in information regarding specific items, such as delirium or fall risk. Screening results are partly embedded systematically and in daily nursing care, e.g., in team briefings or during transfer of patients to other wards. The majority of the nurses had received little training about the background of frailty screening and the use of screening tools.

Conclusions

Most nurses stated that frailty screening tools are helpful in daily practice. However, nurses did not use the frailty screening tools in the referred way; tools were particularly used to evaluate patients on separate items of the tool instead of the summative score of the tool. When frailty screening tools are implemented in daily practice, training needs to be focused on. Additional research in this field is necessary to gain more insight into nurses’ opinions on frailty screening.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12877-021-02586-z.

Impact of physical, cognitive, and psychological functions on incident homebound status after discharge among hospitalized older patients: A clinical-based prospective study

PURPOSE

Physical and cognitive/psychological functions are risk factors for incident homebound status. However, there are only a few studies exploring the factors related to homebound status in hospitalized older patients. The aim of this study was to determine the relationship between physical, and cognitive/psychological function at discharge among hospitalized older patients and the risk of undergoing homebound status after discharge.

METHODS

We analyzed the cohort data of hospitalized older patients (age ≥65 years) with internal medical problems. The main outcome was the incidence of homebound status a month after discharge. Physical functions were measured by handgrip strength (HG), knee extension strength (KES), one-leg stance (OLS), and walking speed (WS). Cognitive and psychological functions were assessed using the Mini-Mental State Examination (MMSE) and Geriatric Depression Scale-5 (GDS-5), respectively. Poisson regression models were used to estimate the risk ratios (RR) and 95 % confidence intervals (CIs) of the relationships between physical, cognitive, and psychological functions as well as the homebound status.

RESULTS

A total of 178 participants who completed the follow-up were analyzed mean age (standard deviation) 76.2 (6.9) years. A month after discharge, 23 participants were deemed homebound, for a cumulative incidence (95 %CI) of 12.9 % (8.0 %-17.8 %). The RR (95 %CI) estimated by Poisson regression were 3.51 (1.30-9.48), 0.15 (0.03-0.72) and 0.11 (0.01-0.92) for low KES, maximum WS and comfortable WS, respectively. However, HG, OLS, MMSE, and GDS-5 were not significantly associated with the incidence of homebound status.

CONCLUSION

Physical functions can predict the incidence of homebound status after discharge among hospitalized older patients.

Effect of anaemia on hand grip strength, walking speed, functionality and 1 year mortality in older hospitalized patients

Background

Anaemia is a common problem in hospitalized older patients and is recognized as a risk factor for a significant number of adverse outcomes. Data of the effect of anaemia on functional status during hospitalization and mortality after discharge are limited. Aim of the study is to examine whether there is an association between anaemia, hand grip strength, gait speed and basic activities of daily living (ADL) during hospitalization and mortality 1 year after discharge in geriatric patients.

Methods

In a prospective study, data on age, sex, body mass index, Mini-Mental State Examination (MMSE), main clinical diagnosis, number of comorbidities, hand grip strength, gait speed, ADL, haemoglobin, C-reactive protein and estimated Glomerular filtration ratio (eGFR) were recorded in 220 older patients, admitted to the acute geriatric ward of a university hospital. Anaemia was defined as a haemoglobin level <13 g/dL for men and <12 g/dL for women and was further specified into severe (haemoglobin level <10 g/dL for both men and women) and moderate anaemia (haemoglobin between 10 and 12 g/dL for women and 10 and 13 g/dL for men). Gait speed (in meters per second) was calculated after a 4.5 m walk and hand grip strength (in kilogram) was assessed with a hydraulic hand dynamometer. Functionality was assessed in the six basic activities of daily living. Information about the vital status was obtained 1 year after discharge with a telephone call. Analysis of covariance (ANCOVA) was used to examine the effect of the anaemia status on the walking speed, hand grip strength and premorbid ADL index and logistic regression analysis was used to examine whether anaemia could be identified as risk factors for mortality 12 months after discharge.

Results

Overall, 106 (48 %) patients had anaemia. Hand-grip strength, gait speed and ADL score were not significantly different between anaemic and non-anaemic hospitalized geriatric patients. After adjustment for age, sex, body mass index, eGFR, MMSE, number of comorbidities and main clinical diagnosis, the means for hand-grip strength were 17.3, 19.9 and 19.1 kg (p = 0.38); for gait speed 0.57, 0.52 and 0.47 m/s (p = 0.28); and for the ADL score 3.50, 3.05 and 3.30 (p = 0.75) in patients with severe, moderate and without anaemia, respectively. In the unadjusted model, the odds ratio for mortality 1 year after discharge was 2.72 (95 % CI 1.20–6.14) and 4.70 (95 % CI 1.91–11.77) for moderate and severe anaemia, respectively, with no anaemia as the reference group. After adjustment for several confounders, a haemoglobin level less than 10 g/dl (OR 3.87; 95 % CI 1.25–11.99) remained significantly associated with an increased mortality over that 1 year period.

Conclusion

Our results do not support that anaemia on admission is associated with a decline in physical performance (hand grip strength and gait speed) and functionality (ADL) during hospitalization in older patients. However, severe anaemia is a significant risk factor for an increased mortality over a 1 year period after discharge.