May nutritional status worsen during hospital stay? A sub-group analysis from a cross-sectional study

Time to act! - A cross-sectional study on how nutritional risk increases during hospitalization and associates with worse outcome

BACKGROUND & AIMS

Nutritional risk is prevalent, and it develops negatively during hospital stay. The aim of this cohort study was to assess the association of nutritional risk with total costs of hospital care, length of stay, and in-hospital mortality.

METHODS

Cross-sectional study with hospitalized patients (n = 3053). Nutritional risk screening 2002 and outcome were investigated. Chi-square, Fisher, and Mann-Whitney tests, univariable and multivariable generalized linear and binary logistic regression models were used.

RESULTS

Nutritional risk was detected in 18% (184/1024) of those patients assessed at admission while the number of patients at risk increased 3-fold (47%,152/265) in those screened 14 days after admission (odds ratio 6.25; 95% CI 4.58-8.53, p < 0.001). Nutritionally at-risk patients had 5.6 days longer length of stay (p < 0.001) and 9% higher adjusted total costs compared with non-risk patients (p < 0.001). Adjusted overall risk for in-hospital mortality was 4.4 (95% CI 2.44-7.92, p < 0.001) for patients at nutritional risk. The screening rate was between 52% and 68%, and only 4% of the nutritionally at-risk patients had dietitian consultation during their hospital stay.

CONCLUSIONS

The number of patients with nutritional risk increased clearly during hospitalization associating with a four times higher in-hospital mortality and substantially increased hospital costs. The results demonstrate that the nutritional risk and its detrimental influence on the outcome increases during hospitalization emphasizing the importance to screen patients at admission and repeated weekly.

Sex-related differences in the impact of nutritional status on length of hospital stay in atrial fibrillation: a retrospective cohort study

Background

Nutritional status is related to the length of hospitalization of patients with atrial fibrillation (AF). The aim of this study is to assess the prognostic impact of nutritional status and body mass index on length of hospital stay (LOHS) among patients with AF relative to their sex.

Methods

A retrospective analysis of the medical records of 1,342 patients admitted urgently with a diagnosis of AF (ICD10: I48) to the Cardiology Department (University Hospital in Wroclaw, Poland) between January 2017 and June 2021.

Results

In the study group, women were significantly older than men (72.94 ± 9.56 vs. 65.11 ± 12.68, p < 0.001). In an unadjusted linear regression model, malnutrition risk was a significant independent predictor of prolonged hospitalization in men (B = 1.95, p = 0.003) but not in women. In the age-adjusted linear regression model, malnutrition risk was a significant independent predictor of prolonged hospitalization in men (B = 1.843, p = 0.005) but not in women. In the model adjusted for age and comorbidities, malnutrition risk was a significant independent predictor of prolonged hospitalization in men only (B = 1.285, p = 0.043). In none of the models was BMI score a predictor of LOHS in either sex.

Conclusion

The risk of malnutrition directly predicts the length of hospital stays in men but not women. The study did not find a relationship between body mass index and length of hospital stay in both women and men.

Hospital Services to Improve Nutritional Intake and Reduce Food Waste: A Systematic Review

BACKGROUND AND AIMS

Patients' nutritional intake is a crucial issue in modern hospitals, where the high prevalence of disease-related malnutrition may worsen clinical outcomes. On the other hand, food waste raises concerns in terms of sustainability and environmental burden. We conducted a systematic review to ascertain which hospital services could overcome both issues.

METHODS

A systematic literature search following PRISMA guidelines was conducted across MEDLINE, Web of Science, and Scopus for randomised controlled trials (RCTs) and observational studies comparing the effect of hospital strategies on energy intake, protein intake, and plate/food waste. The quality of included studies was assessed using the Newcastle-Ottawa Scale for cohort studies and the Cochrane Risk of Bias tool from the Cochrane Handbook for Systematic Reviews of Interventions for RCTs.

RESULTS

Nineteen studies were included, assessing as many hospital strategies such as food service systems-including catering and room service-(n = 9), protected mealtimes and volunteer feeding assistance (n = 4), food presentation strategies (n = 3), nutritional counseling and education (n = 2), plant-based proteins meal (n = 1). Given the heterogeneity of the included studies, the results were narratively analysed.

CONCLUSIONS

Although the results should be confirmed by prospective and large sample-size studies, the personalisation of the meal and efficient room service may improve nutritional intake while decreasing food waste. Clinical nutritionist staff-especially dietitians-may increase food intake reducing food waste through active monitoring of the patients' nutritional needs.

The Apparent Asymmetrical Relationship Between Small Bowel Bacterial Overgrowth, Endotoxemia, and Liver Steatosis and Fibrosis in Cirrhotic and Non-Cirrhotic Patients: A Single-Center Pilot Study

Introduction

Gut microbiota are a complex ecosystem harboring our intestine. They maintain human body equilibrium, while their derangement, namely, “dysbiosis“, has been associated with several gastrointestinal diseases, such as liver steatosis (NAFLD) and liver cirrhosis. Small intestinal bacterial overgrowth (SIBO) is an example of dysbiosis of the upper gastrointestinal (GI) tract.

Aim

The aim of this study is to evaluate the relationship between SIBO and levels of endotoxemia and grade of liver steatosis (LS) and liver fibrosis (LF) in hepatologic patients.

Materials and Methods

Consecutive outpatients referred to our hepatology clinic were tested for SIBO by the lactulose breath test (LBT) and peripheral blood levels of endotoxemia; LS grading and LF were assessed by abdominal ultrasound and transient elastography, respectively.

Results

Fifty-two consecutive patients (17 with alcohol abuse (4.5 ± 0.8 alcohol units per day), 4 with HCV and 2 with HBV infection, 24 of metabolic origin, 2 of autoimmune origin, and 3 with cholangiopathies; mean age 54.7 ± 8.3 years, 31 F, BMI 24.1 ± 1.1 Kg/m²) and 14 healthy volunteers (HV) (mean age 50.1 ± 4.3 years, 9 F, BMI 23.3 ± 1.1 Kg/m²) were enrolled. SIBO prevalence was significantly higher in cirrhotic (LC) vs. non-cirrhotic (LNC) patients and vs. HV (all, p < 0.05), with a significant positive trend according to Child-Pugh status (all, p < 0.05). SIBO prevalence was not correlated with LS stages (all, p = NS). Consensually, endotoxin levels were significantly higher in LC vs. LNC and vs. HV (all, p < 0.05) and significantly correlated with LF in patients with LC, according to Child-Pugh status (all, p < 0.05).

Conclusion

This study shows that SIBO prevalence and relative endotoxin blood levels seem to be significantly associated with the grade of LF vs. LS in LC. SIBO is also present under pre-cirrhotic conditions, but its prevalence seems to correlate with liver disease irreversible derangement.

Risk factors for malnutrition among hospitalized gastroenterological patients

Background/Aim. Risk factors for malnutrition of patients during hospitalization have not been precisely deter-mined. The aim of the study was to determine these factors in hospitalized gastroenterological patients. Methods. Nutritional status (NS) of 650 gastroenterological patients was assessed at the hospital admission and at discharge by the six parameters: unintentional weight loss, lymphocyte count, serum albumin concentration, body mass index, triceps skinfold thickness, and mid-upper arm muscle circumference. The influence on NS at discharge was tested for ten factors: gender, age, affected organ, the nature, severity, and complications of the disease, the length of hospitalization, mobility worsening during hospitalization, Karnofsky score, and NS on admission. Primary and secondary risk factors were defined among the factors significantly influencing malnutrition. Results. Seven factors were found to be the independent predictors for malnutrition in hospitalized gastroenterological patients. NS at admission was considered as a primary risk factor (Forward: Wald multivariate logistic regression analysis, p < 0.001 for five applied assessment parameters). The other six factors, obtained in the evaluation according to 1-3 assessment parameters, were considered as secondary risk factors: severe disease activity, malignancy, the existence of complications, male gender, hospitalization > 14 days, and mobility worsening during the hospitalization (Forward: Wald multivariate logistic regression analysis, p from 0.001 to 0.027). Conclusion. There are seven risk factors for malnutrition among gastroenterological patients during hospitalization. Timely nutritional support in these patients can prevent the development of intrahospital malnutrition and its negative influence on the clinical outcome.

Lactobacillus rhamnosus attenuates Thai chili extracts induced gut inflammation and dysbiosis despite capsaicin bactericidal effect against the probiotics, a possible toxicity of high dose capsaicin

Because of a possible impact of capsaicin in the high concentrations on enterocyte injury (cytotoxicity) and bactericidal activity on probiotics, Lactobacillus rhamnosus L34 (L34) and Lactobacillus rhamnosus GG (LGG), the probiotics derived from Thai and Caucasian population, respectively, were tested in the chili-extract administered C57BL/6 mice and in vitro experiments. In comparison with placebo, 2 weeks administration of the extract from Thai chili in mice caused loose feces and induced intestinal permeability defect as indicated by FITC-dextran assay and the reduction in tight junction molecules (occludin and zona occludens-1) using fluorescent staining and gene expression by quantitative real-time polymerase chain reaction (qRT-PCR). Additionally, the chili extracts also induced the translocation of gut pathogen molecules; lipopolysaccharide (LPS) and (1→3)-β-d-glucan (BG) and fecal dysbiosis (microbiome analysis), including reduced Firmicutes, increased Bacteroides, and enhanced total Gram-negative bacteria in feces. Both L34 and LGG attenuated gut barrier defect (FITC-dextran, the fluorescent staining and gene expression of tight junction molecules) but not improved fecal consistency. Additionally, high concentrations of capsaicin (0.02-2 mM) damage enterocytes (Caco-2 and HT-29) as indicated by cell viability test, supernatant cytokine (IL-8), transepithelial electrical resistance (TEER) and transepithelial FITC-dextran (4.4 kDa) but were attenuated by Lactobacillus condition media (LCM) from both probiotic-strains. The 24 h incubation with 2 mM capsaicin (but not the lower concentrations) reduced the abundance of LGG (but not L34) implying a higher capsaicin tolerance of L34. However, Lactobacillus rhamnosus fecal abundance, using qRT-PCR, of L34 or LGG after 3, 7, and 20 days of the administration in the Thai healthy volunteers demonstrated the similarity between both strains. In conclusion, high dose chili extracts impaired gut permeability and induced gut dysbiosis but were attenuated by probiotics. Despite a better capsaicin tolerance of L34 compared with LGG in vitro, L34 abundance in feces was not different to LGG in the healthy volunteers. More studies on probiotics with a higher intake of chili in human are interesting.

STRONGkids nutrition screening tool in pediatrics: An analysis of cutoff points in Brazil

BACKGROUND

Studies have indicated the Screening Tool for Risk on Nutritional Status and Growth (STRONGkids) as a method of pediatric nutrition screening with good validity in the hospital setting. However, we need to analyze whether the cutoff values originally proposed are suitable for use in Brazil.

METHODS

A cross-sectional study was performed in patients admitted to the pediatric ward of a public hospital. STRONGkids was used to assess nutrition risk (low risk, 0 points; moderate risk, 1-3 points; and high risk, 4-5 points). The indexes weight/height or body mass index/age were used to indicate acute malnutrition, and length or height/age was used to indicate chronic malnutrition. Receiver operating characteristic curves were constructed and the areas under the curve were calculated, with respective 95% confidence intervals, to assess the ability of STRONGkids to predict malnutrition and longer hospital stay.

RESULTS

The study included 599 patients, with a median age of 2.6 years. The frequency of nutrition risk (medium or high) was 83.6%. In comparison with anthropometric indexes, STRONGkids was the only scoring system with the discriminatory capacity to identify patients with longer hospital stays. The comparative analysis of the means of hospital stay according to STRONGkids showed that patients with a score equal to 3 behaved similarly to those classified as high nutrition risk (4-5 points).

CONCLUSIONS

Considering the best cutoff point to predict prolonged hospitalization, STRONGkids used in Brazil should consider patients with 3 points as having high nutrition risk, as well those scoring 4 and 5.

Optimizing Inpatient Nutrition Care of Adult Patients with Inflammatory Bowel Disease in the 21st Century

Malnutrition is highly prevalent in inflammatory bowel disease (IBD) patients and disproportionately affects those admitted to hospital. Malnutrition is a risk factor for many complications in IBD, including prolonged hospitalization, infection, greater need for surgery, development of venous thromboembolism, post-operative complications, and mortality. Early screening for malnutrition and prompt nutrition intervention if indicated has been shown to prevent or mitigate many of these outlined risk factors. There are many causes of malnutrition in IBD including reduced oral food intake, medications, active inflammation, and prior surgical resections. Hospitalization can further compound pre-existing malnutrition through inappropriate diet restrictions, nil per os (NPO) for endoscopy and imaging, or partial bowel obstruction, resulting in "post-hospital syndrome" after discharge and readmission. The aim of this article is to inform clinicians of the prevalence and consequences of malnutrition in IBD, as well as available screening and assessment tools for diagnosis, and to offer an organized approach to the nutritional care of hospitalized adult IBD patients.

[Weight loss and malnutrition risk in geriatric patients]

BACKGROUND

Malnutrition is a major challenge in routine clinical practice and is associated with increased mortality.

OBJECTIVES

In the research project Prevention and treatment of malnutrition in geriatric patients in hospital funded by the Federal Ministry of Education and Research (BMBF), routine data were analyzed. The aim was to uncover the causes of malnutrition risks acquired in hospital.

MATERIAL AND METHODS

Anonymized data from nursing home residents with at least a 3-day hospital stay were analyzed. The study included a total of 2058 residents from 19 nursing homes. The malnutrition risk was assessed by the combined MUST/PEMU (Malnutrition Universal Screening Tool/Nursing Measurement of Malnutrition and its Causes) screening and malnutrition by ESPEN (European Society for Clinical Nutrition and Metabolism) criteria.

RESULTS

Of the residents 36.2% (n = 744) had an initial risk of malnutrition and 12.7% (n = 262) were already malnourished. The proportions increased to 48.6% (n = 881) and 14.3% (n = 259) at discharge, respectively. The logistic regression analysis showed a significantly increasing probability of developing a malnutrition risk during the hospital stay with the diagnoses diseases of the respiratory system (OR 2.686; CI 95 1.111-4.575), chondropathy and osteopathy (OR 1.892; CI 95 1.149-3.115) and a higher BMI (OR 0.108; CI 95 1.038-1.181), more positive weight changes 6 months before hospital (OR 1.055; CI 95 1.017-1.094) and an increasing hospital stay (OR 1.048; CI 95 1.029-1.067).

CONCLUSION

The identification of an initial malnutrition and the prevention of developing a malnutrition risk represent major challenges in clinical practise. Both are equally necessary.

Skeletal Muscle Loss during Multikinase Inhibitors Therapy: Molecular Pathways, Clinical Implications, and Nutritional Challenges

In cancer patients, loss of muscle mass is significantly associated with low tolerability of chemotherapy and poor survival. Despite the great strides in the treatment of cancer, targeted therapies such as tyrosine kinase inhibitors (TKIs) could exacerbate muscle wasting. Over recent years, the impact of skeletal muscle loss during TKI therapy on clinical outcomes has been in the spotlight. In this review, we focus on the different molecular pathways of TKIs potentially involved in muscle wasting. Then, we report the results of the studies assessing the effects of different TKI therapies—such as sorafenib, regorafenib, sunitinib, and lenvatinib—on muscle mass, and highlight their potential clinical implications. Finally, we discuss an integrative nutritional approach to be adopted during TKI treatment. The assessment of muscle mass from computerized tomography imaging could be helpful in predicting toxicity and prognosis in patients treated with TKI such as sorafenib. Early recognition of low muscle mass and effective personalized nutritional support could prevent or attenuate muscle mass wasting. However, the role of nutrition is still overlooked, and future clinical trials are needed to find the optimal nutritional support to countermeasure muscle mass depletion during TKI therapy.

Health conditions and weight change among the older adults over ten years of the SABE Survey

OBJECTIVE

To analyze the relationship between health conditions and weight changes among elderly people monitored by the SABE Survey over a ten-year period in São Paulo/SP.

METHODS

This was a longitudinal study that followed (2000-baseline, 2006 and 2010) change in body weight (outcome variable) and associated health conditions (exposure variables) in the elderly (n=571); multinomial logistic regression analyses were employed.

RESULTS

Average weight increase in the evaluated period was 29.0%. 34.0% (2006) and 12.5% (2010) lost weight and 18.2% (2006) and 39.9% (2010) gained weight. Prevalence of chronic diseases increased from 34.1% (2000) to 51.9% (2006) and 60.1% (2010). Older people with weight gain also rated their overall health as poorer in 2006 (RR:3.15; 95%CI 1.21;8.17) and 2010 (RR:2.46; 95%CI 1.02;5.94). The higher numbers of diseases (RR:2.12; 95%CI 1.00;4.46) and hospitalizations (RR:3.50; 95%CI 1.40;8.72) were associated with a decrease in weight in 2010.

CONCLUSION

Weight changes are related to poorer health status among the elderly.

The impact of personalized nutritional support on postoperative outcome within the enhanced recovery after surgery (ERAS) program for liver resections: results from the NutriCatt protocol

BACKGROUND

Malnutrition in liver surgery is correlated with higher postoperative complications and longer length of hospital stay (LOHS), the same items that ERAS programs try to optimize. However, to date, standardized dietary protocols have not been defined within ERAS programs. Aim of this study was to evaluate the impact on LOHS and postoperative complications, of a personalized nutritional protocol (NutriCatt) with diet and oral branched-chain amino acid (BCAA) supplementation, adopted within the ERAS program.

METHODS

1960 consecutive liver resections were performed from January 2000 to September 2018.

EXCLUSION CRITERIA

perihilar cholangiocarcinoma, simultaneous colorectal and liver resections. Four groups for analysis: resections before 2009 (1st period); from 2009 to 2016 (2nd period, including laparoscopic resections); between 2016 and September 2017 (ERAS); after September 2017 (ERAS + NutriCatt).

RESULTS

LOHS declined (p < 0.0001), from a median of 10 days (1st period) to 8, 7 and 6 in 2nd period, ERAS and ERAS + NutriCatt groups, respectively. At multivariable analysis for risk of LOHS > 8 days, the 2nd period, ERAS and ERAS + NutriCatt groups showed a protective effect. These results were confirmed for both minor and major resections. LOHS was significantly lower in ERAS + Nutricatt group than in ERAS group, without increasing risk of postoperative complications, although the rate of laparoscopic resections was similar in these two groups and complexity of liver resections was significantly higher in the last period.

CONCLUSIONS

Adoption of a personalized nutritional protocol with BCAA supplementation within the ERAS program for liver resections was a safe and effective approach that may impact on reducing the LOHS.

Effects of using the MyFood decision support system on hospitalized patients' nutritional status and treatment: A randomized controlled trial

BACKGROUND & AIMS

Compliance to guidelines for disease-related malnutrition is documented as poor. The practice of using paper-based dietary recording forms with manual calculation of the patient's nutritional intake is considered cumbersome, time-consuming and unfeasible among the nurses and does often not lead to appropriate nutritional treatment. We developed the digital decision support system MyFood to deliver a solution to these challenges. MyFood is comprised of an app for patients and a website for nurses and includes functions for dietary recording, evaluation of intake compared to requirements, and a report to nurses including tailored recommendations for nutritional treatment and a nutritional care plan for documentation. The study aimed to investigate the effects of using the MyFood decision support system during hospital stay on adult patients' nutritional status, treatment and hospital length of stay. The main outcome measure was weight change.

METHODS

The study was a parallel-arm randomized controlled trial. Patients who were allocated to the intervention group used the MyFood app during their hospital stay and the nurses were encouraged to use the MyFood system. Patients who were allocated to the control group received routine care.

RESULTS

We randomly assigned 100 patients (51.9 ± 14 y) to the intervention group (n = 49) and the control group (n = 51) between August 2018 and February 2019. Losses to follow-up were n = 5 in the intervention group and n = 1 in the control group. No difference was found between the two groups with regard to weight change. Malnutrition risk at discharge was present in 77% of the patients in the intervention group and 94% in the control group (p = 0.019). Nutritional treatment was documented for 81% of the patients in the intervention group and 57% in the control group (p = 0.011). A nutritional care plan was created for 70% of the intervention patients compared to 16% of the control patients (p < 0.001).

CONCLUSIONS

The intervention had no effect on weight change during hospital stay. A higher proportion of the patients in the control group was malnourished or at risk of malnutrition at hospital discharge compared to the patients in the intervention group. The documentation of nutritional intake, treatment and nutritional care plans was higher for the patients using the MyFood system compared to the control group. This trial was registered at clinicaltrials.gov (NCT03412695).

Older patients' and their family caregivers' perceptions of food, meals and nutritional care in the transition between hospital and home care: a qualitative study

Background

Older people have varying degrees of unmet nutritional needs following discharge from hospital. Inadequate involvement of the older person and his or her family caregivers in care and care planning, and inadequate support of self-management in the discharge process and follow-up care at home, negatively affects the quality of care. Research on older patients’ and their family caregivers’ experiences with nutritional care in hospital and home care and in the transition between these settings is limited. Thus, the aim of this study was to explore older patients’ and their family caregivers’ perceptions regarding the food, meals and nutritional care provided in the transition between hospital and home care services, focusing on the first 30 days at home. The overall aim of this study is to produce knowledge that can inform policy and clinical practice about how to optimise the care provided to older persons that are malnourished or at risk of malnutrition.

Methods

Using a qualitative interpretive descriptive design, we carried out face-to-face semi-structured interviews with 15 older patients, with documented risk of malnutrition or malnourishment (Mini Nutritional Assessment [MNA]), two and five weeks after hospital discharge. In addition, we interviewed nine family caregivers once during this five week period. The questions focused on perceptions of food, meals and nutritional care in hospital and home care and in the transition between these settings. We analysed the data thematically.

Results

Four overarching themes emerged from the material: 1) the need for a comprehensive approach to nutritional care, 2) non-individualised nutritional care at home, 3) lack of mutual comprehension and shared decision making and 4) the role of family caregivers.

Conclusion

The organisation of nutritional care and food provision to older people, depending on care, lack consideration for the individual’s values, needs and preferences. Older patients’ and their family caregivers’ needs and preferences should guide how nutritional care is provided.

Efficacy and Efficiency of Nutritional Support Teams

Malnutrition is frequent in patients during a hospital admission and may further worsen during the hospital stay without appropriate nutritional support. Malnutrition causes greater complication rates, morbidity, and mortality rates, which increases the length of hospital stay and prolongs rehabilitation. Early recognition of individual nutritional risk and timely initiation of a tailored nutritional therapy are crucial. Recent evidence from large-scale trials suggests that efficient nutritional management not only improves the nutritional status, but also prevents negative clinical outcomes and increases patients’ quality of life. Multifaceted clinical knowledge is required to ensure optimal nutritional support, according to a patient’s individual situation and to avoid potential complications. Furthermore, clear definition of responsibilities and structuring of patient, and work processes are indispensable. Interdisciplinary and multiprofessional nutritional support teams have been built up to ensure and improve the quality and safety of nutritional treatments. These teams continuously check and optimize the quality of procedures in the core areas of nutritional management by implementing nutritional screening processes using a validated tool, nutritional status assessment, an adequate nutritional care plan development, prompt and targeted nutritional treatment delivery, and provision of accurate monitoring to oversee all aspects of care, from catering to artificial nutrition. The foundation of any nutritional care plan is the identification of patients at risk. The aim of this narrative review is to provide an overview about composition, tasks, and challenges of nutritional support teams, and to discuss the current evidence regarding their efficiency and efficacy in terms of clinical outcome and cost effectiveness.

Clinical use of bioelectrical impedance analysis in patients affected by myotonic dystrophy type 1: A cross-sectional study

OBJECTIVES

Myotonic dystrophy type 1 (DM1) is an inherited muscle disorder characterized by slowly progressive weakness due to muscle degeneration. The Muscular Impairment Rating Scale (MIRS) is validated to assess clinical muscle severity of patients with DM1, although the scale is not sensitive enough to assess disease progression in time intervals fit for clinical trials. The aim of this study was to analyze bioelectrical whole body and arm segmental parameters in patients with DM1 to explore a correlation between bioelectrical impedance analysis (BIA) parameters and disease stage.

METHODS

Forty patients with DM1 were enrolled in a cross-sectional study. In all patients, MIRS, handgrip strength (HGS), and BIA were assessed. A Kruskal-Wallis test was used to assess the difference in continuous variables according to MIRS. Correlation between BIA values and HGS were made by Pearson's coefficient analysis. A linear regression analysis was performed.

RESULTS

Eighteen of 40 patients were men (45%). The median age of the cohort was 42 y (30-58 y). Four patients (10%) were classified as MIRS 1; 20 (50%) MIRS 2; 11 (27.5%) MIRS 3; and 5 (12.5%) as MIRS 4. A correlation was observed between phase angle and MIRS (P = 0.0001). MIRS correlated with other BIA values such as resistance, impedance ratio, and capacitance (P = 0.005, P = 0.0001, P = 0.0006, respectively). At linear regression analysis, segmental resistance, phase angle, impedance ratio, and capacitance of both arms significantly correlated with HGS.

CONCLUSIONS

Results from the study support the use of BIA as a suitable procedure for staging DM1 muscle involvement and as a measure of muscle disease outcome, in clinical practice and in clinical trial design of therapeutic drugs.