Original articleThe relationship between nutritional status of hip fracture operated elderly patients and their functioning, comorbidity and outcome
Introduction
The worldwide increase in hip fractures among the elderly poses a major challenge to the health care system and society.1 Hip fracture in older adults is associated with increased mortality, disability and dependence on others.1, 2, 3, 4 The fracture may mark the end of a person's independent life, with reports that only 50–60% of patients return to their own home.2, 5, 6
Aging is associated with physical, mental, social and environmental changes which may contribute to the risk of malnutrition.7 Up to 58% of patients with a hip fracture have been found to be malnourished on admission or will develop serious nutritional deficits while hospitalized compared with only 2% of those living at home.1, 3, 8, 9, 10 Malnourishment may be aggravated by pre-operative semi-starvation due to pre-operative fasting, long delays pre-surgery, moderate to severe pain, nausea and vomiting.8 Malnutrition combined with the catabolic response to surgery, leads to muscle wasting and has been found to be associated with impairment in post-operative rehabilitation,1, 8 post-operative complications, poorer clinical outcomes, increased length of stay5, 7, 9 and mortality.2, 10, 11
Some studies involving oral supplements given to orthopedic patients, have attained positive effects as to activities of daily living (ADLs), health-related quality of life, reduction in post-operative complications, shorter hospitalization,7 reduced six months post-operative mortality8, 9 and improvement in the Mini Nutritional Assessment (MNA) score,12 while other studies did not demonstrate any specific effects. Clearly, early identification and treatment of undernourished patients with a hip fracture is essential.11
Although large numbers of hip fracture elderly patients are functionally and cognitively impaired pre-fracture, little is known about the relationship between their nutritional and functional status and outcome. The aim of the current study was to examine the relationship between the nutritional status assessed by the MNA short-form (MNA-SF) and cognitive, functional status, comorbidity, readmissions and long term mortality of hip fracture operated elderly patients.
Section snippets
Study design
This cohort study took place in the Ortho-geriatric unit of the Department of Geriatrics, Beilinson Hospital, Rabin Medical Center, Israel. Included in the study were all patients ≥65 years old who were operated on for hip fracture between 11/2007–10/2009 and hospitalized in the Ortho-geriatric unit. Excluded were patients with terminal illnesses (end stage malignancy, severe chronic lung disease or heart failure) and multi-trauma cases such as vehicular accidents. The study was reviewed and
Results
A total of 251 patients were admitted between 11/2007–10/2009 to the Ortho-geriatric unit. Two hundred fifteen operated patients were included in the study (36 mainly non-operated patients were excluded), of whom 154 (71.6%) were women. Mean age was 83.5 ± 6.09 years, ranging from 66 to 104 years. One hundred twenty six (58.6%), 78 (36.3%) and 11 (5.1%) patients had undergone surgical repair of pertrochanteric, sub-capital and sub-trochanteric fractures, respectively. One hundred twenty-five
Discussion
In the present study, we found that elderly patients admitted with a hip fracture, have a higher rate of malnutrition or are at risk of malnutrition. Many of these patients are partially or fully-dependent and cognitively impaired. In addition, they have higher comorbidity scores, readmissions and mortality rates.
Previous studies have revealed similar rates of undernourished and at risk of malnutrition hip fracture patients upon admission, 32.5% and 56%, respectively.1, 11 Recently, Hoekstra
Conclusions
Elderly patients admitted with a hip fracture have a high rate of malnutrition and risk of malnutrition. Patients with higher cognitive and functional status are in a superior nutritional condition. Poor nutritional status assessed by the MNA is associated with higher comorbidity indices, mortality and readmissions. However, only comorbidity and low functioning can predict long-term mortality.
Funding
None.
Author agreement
All authors have made substantial contributions and gave final approval of the conceptions, drafting and final version.
Author contributions
TK-H a principal investigator conceived the study, participated in its design, collection and analysis of data, interpretation of results and writing the manuscript
AW was involved in the study design and interpretation of the results
AH participated in the study implementation
IO participated in collection and analysis of data
BG contributed to the study design and implementation, participated in collection of data
SF was involved in the study design and implementation
MS was involved in the study
Conflict of interest
None known.
Acknowledgments
All authors have made substantial contributions to all of the following: (1) the conception and design of the study, or acquisition of data, or analysis and interpretation of data, (2) drafting the article or revising it critically for important intellectual content, (3) final approval of the version to be submitted. The manuscript, including related data, figures and tables has not been previously published and that the manuscript is not under consideration elsewhere. I.e. collection of data,
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