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Cornell K, Alam M, Lyden E, Wood L, LeVan TD, Nordgren TM, Bailey K, Hanson C. Saturated Fat Intake Is Associated with Lung Function in Individuals with Airflow Obstruction: Results from NHANES 2007⁻2012. Nutrients 2019; 11:nu11020317. [PMID: 30717299 PMCID: PMC6413158 DOI: 10.3390/nu11020317] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 01/14/2023] Open
Abstract
Nutritional status is a well-recognized prognostic indicator in chronic obstructive pulmonary disease (COPD); however, very little is known about the relationship between lung function and saturated fat intake. We used data from the cross-sectional National Health and Nutrition Examination Surveys (NHANES) to assess the relationship between saturated fatty acid (SFA) intake and lung function in the general US adult population. Adults in NHANES (2007⁻2012) with pre-bronchodilator spirometry measurements and dietary SFA intake were included. Primary outcomes were lung function including forced expiratory volume in one second (FEV₁), FEV₁, forced vital capacity (FVC), FEV₁/FVC ratio, percent predicted FEV₁ and percent predicted FVC. Multivariable regression models in the general population as well as those with spirometry-defined airflow obstruction were used to assess the relationship between lung function measurements and dietary SFA intake after adjustment for confounders. 11,180 eligible participants were included in this study. Univariate analysis revealed a statistically significant positive association between total SFA intake and lung function outcomes; however, these relationships were attenuated after adjustment for covariates. A secondary analysis of individuals with spirometry-defined airflow obstruction (FEV₁/FVC < 0.7) revealed that a lower intake of SFA was associated with reduced FEV1 (β = -126.4, p = 0.04 for quartile 1 vs. quartile 4), FVC (β = -165.8. p = 0.01 for quartile 1 vs. quartile 4), and percent predicted FVC (β = -3.3. p = 0.04 for quartile 1 vs. quartile 4), after adjustment for relevant confounders. No associations were observed for the FEV₁/FVC ratio and percent predicted FEV₁. It is possible that characteristics such as food source and fatty acid chain length may influence associations between saturated fatty acid intake and health outcomes.
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Affiliation(s)
- Kasey Cornell
- Internal Medicine Pulmonary, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Morshed Alam
- College of Public Health, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Elizabeth Lyden
- College of Public Health, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Lisa Wood
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle NSW 2308, Australia.
| | - Tricia D LeVan
- Internal Medicine Pulmonary, University of Nebraska Medical Center, Omaha, NE 68198, USA.
- College of Public Health Epidemiology, University of Nebraska, Omaha, NE 68198, USA.
- Research Service, VA Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA.
| | - Tara M Nordgren
- Division of Biomedical Sciences, University of California Riverside, Riverside, CA 92521, USA.
| | - Kristina Bailey
- Internal Medicine Pulmonary, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Corrine Hanson
- Medical Nutrition Education, College of Allied Health Professions, University of Nebraska Medical Center, Omaha, NE 68198, USA.
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Feinberg J, Nielsen EE, Korang SK, Halberg Engell K, Nielsen MS, Zhang K, Didriksen M, Lund L, Lindahl N, Hallum S, Liang N, Xiong W, Yang X, Brunsgaard P, Garioud A, Safi S, Lindschou J, Kondrup J, Gluud C, Jakobsen JC. Nutrition support in hospitalised adults at nutritional risk. Cochrane Database Syst Rev 2017; 5:CD011598. [PMID: 28524930 PMCID: PMC6481527 DOI: 10.1002/14651858.cd011598.pub2] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND The prevalence of disease-related malnutrition in Western European hospitals is estimated to be about 30%. There is no consensus whether poor nutritional status causes poorer clinical outcome or if it is merely associated with it. The intention with all forms of nutrition support is to increase uptake of essential nutrients and improve clinical outcome. Previous reviews have shown conflicting results with regard to the effects of nutrition support. OBJECTIVES To assess the benefits and harms of nutrition support versus no intervention, treatment as usual, or placebo in hospitalised adults at nutritional risk. SEARCH METHODS We searched Cochrane Central Register of Controlled Trials (CENTRAL) in the Cochrane Library, MEDLINE (Ovid SP), Embase (Ovid SP), LILACS (BIREME), and Science Citation Index Expanded (Web of Science). We also searched the World Health Organization International Clinical Trials Registry Platform (www.who.int/ictrp); ClinicalTrials.gov; Turning Research Into Practice (TRIP); Google Scholar; and BIOSIS, as well as relevant bibliographies of review articles and personal files. All searches are current to February 2016. SELECTION CRITERIA We include randomised clinical trials, irrespective of publication type, publication date, and language, comparing nutrition support versus control in hospitalised adults at nutritional risk. We exclude trials assessing non-standard nutrition support. DATA COLLECTION AND ANALYSIS We used standard methodological procedures expected by Cochrane and the Cochrane Hepato-Biliary Group. We used trial domains to assess the risks of systematic error (bias). We conducted Trial Sequential Analyses to control for the risks of random errors. We considered a P value of 0.025 or less as statistically significant. We used GRADE methodology. Our primary outcomes were all-cause mortality, serious adverse events, and health-related quality of life. MAIN RESULTS We included 244 randomised clinical trials with 28,619 participants that met our inclusion criteria. We considered all trials to be at high risk of bias. Two trials accounted for one-third of all included participants. The included participants were heterogenous with regard to disease (20 different medical specialties). The experimental interventions were parenteral nutrition (86 trials); enteral nutrition (tube-feeding) (80 trials); oral nutrition support (55 trials); mixed experimental intervention (12 trials); general nutrition support (9 trials); and fortified food (2 trials). The control interventions were treatment as usual (122 trials); no intervention (107 trials); and placebo (15 trials). In 204/244 trials, the intervention lasted three days or more.We found no evidence of a difference between nutrition support and control for short-term mortality (end of intervention). The absolute risk was 8.3% across the control groups compared with 7.8% (7.1% to 8.5%) in the intervention groups, based on the risk ratio (RR) of 0.94 (95% confidence interval (CI) 0.86 to 1.03, P = 0.16, 21,758 participants, 114 trials, low quality of evidence). We found no evidence of a difference between nutrition support and control for long-term mortality (maximum follow-up). The absolute risk was 13.2% in the control group compared with 12.2% (11.6% to 13%) following nutritional interventions based on a RR of 0.93 (95% CI 0.88 to 0.99, P = 0.03, 23,170 participants, 127 trials, low quality of evidence). Trial Sequential Analysis showed we only had enough information to assess a risk ratio reduction of approximately 10% or more. A risk ratio reduction of 10% or more could be rejected.We found no evidence of a difference between nutrition support and control for short-term serious adverse events. The absolute risk was 9.9% in the control groups versus 9.2% (8.5% to 10%), with nutrition based on the RR of 0.93 (95% CI 0.86 to 1.01, P = 0.07, 22,087 participants, 123 trials, low quality of evidence). At long-term follow-up, the reduction in the risk of serious adverse events was 1.5%, from 15.2% in control groups to 13.8% (12.9% to 14.7%) following nutritional support (RR 0.91, 95% CI 0.85 to 0.97, P = 0.004, 23,413 participants, 137 trials, low quality of evidence). However, the Trial Sequential Analysis showed we only had enough information to assess a risk ratio reduction of approximately 10% or more. A risk ratio reduction of 10% or more could be rejected.Trial Sequential Analysis of enteral nutrition alone showed that enteral nutrition might reduce serious adverse events at maximum follow-up in people with different diseases. We could find no beneficial effect of oral nutrition support or parenteral nutrition support on all-cause mortality and serious adverse events in any subgroup.Only 16 trials assessed health-related quality of life. We performed a meta-analysis of two trials reporting EuroQoL utility score at long-term follow-up and found very low quality of evidence for effects of nutritional support on quality of life (mean difference (MD) -0.01, 95% CI -0.03 to 0.01; 3961 participants, two trials). Trial Sequential Analyses showed that we did not have enough information to confirm or reject clinically relevant intervention effects on quality of life.Nutrition support may increase weight at short-term follow-up (MD 1.32 kg, 95% CI 0.65 to 2.00, 5445 participants, 68 trials, very low quality of evidence). AUTHORS' CONCLUSIONS There is low-quality evidence for the effects of nutrition support on mortality and serious adverse events. Based on the results of our review, it does not appear to lead to a risk ratio reduction of approximately 10% or more in either all-cause mortality or serious adverse events at short-term and long-term follow-up.There is very low-quality evidence for an increase in weight with nutrition support at the end of treatment in hospitalised adults determined to be at nutritional risk. The effects of nutrition support on all remaining outcomes are unclear.Despite the clinically heterogenous population and the high risk of bias of all included trials, our analyses showed limited signs of statistical heterogeneity. Further trials may be warranted, assessing enteral nutrition (tube-feeding) for different patient groups. Future trials ought to be conducted with low risks of systematic errors and low risks of random errors, and they also ought to assess health-related quality of life.
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Affiliation(s)
- Joshua Feinberg
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmark2100
| | - Emil Eik Nielsen
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmark2100
| | - Steven Kwasi Korang
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmark2100
| | - Kirstine Halberg Engell
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmark2100
| | - Marie Skøtt Nielsen
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmark2100
| | - Kang Zhang
- Beijing University of Chinese MedicineCentre for Evidence‐Based Chinese MedicineBeijingChina
| | - Maria Didriksen
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmark2100
| | - Lisbeth Lund
- Danish Committee for Health Education5. sal, Classensgade 71CopenhagenDenmark2100
| | - Niklas Lindahl
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmark2100
| | - Sara Hallum
- Cochrane Colorectal Cancer Group23 Bispebjerg BakkeBispebjerg HospitalCopenhagenDenmarkDK 2400 NV
| | - Ning Liang
- Beijing University of Chinese MedicineCentre for Evidence‐Based Chinese MedicineBeijingChina
| | - Wenjing Xiong
- Beijing University of Chinese MedicineCentre for Evidence‐Based Chinese MedicineBeijingChina
| | - Xuemei Yang
- Fujian University of Traditional Chinese MedicineResearch Base of TCM syndromeNo。1,Qiu Yang RoadShangjie town,Minhou CountyFuzhouFujian ProvinceChina350122
| | - Pernille Brunsgaard
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmark2100
| | - Alexandre Garioud
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmark2100
| | - Sanam Safi
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmark2100
| | - Jane Lindschou
- Department 7812, Rigshospitalet, Copenhagen University HospitalCopenhagen Trial Unit, Centre for Clinical Intervention ResearchBlegdamsvej 9CopenhagenDenmark2100
| | - Jens Kondrup
- Rigshospitalet University HospitalClinical Nutrition UnitAmager Boulevard 127, 2th9 BlegdamsvejKøbenhavn ØDenmark2100
| | - Christian Gluud
- Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University HospitalThe Cochrane Hepato‐Biliary GroupBlegdamsvej 9CopenhagenDenmarkDK‐2100
| | - Janus C Jakobsen
- Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University HospitalThe Cochrane Hepato‐Biliary GroupBlegdamsvej 9CopenhagenDenmarkDK‐2100
- Holbaek HospitalDepartment of CardiologyHolbaekDenmark4300
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Sanders KJC, Kneppers AEM, van de Bool C, Langen RCJ, Schols AMWJ. Cachexia in chronic obstructive pulmonary disease: new insights and therapeutic perspective. J Cachexia Sarcopenia Muscle 2016; 7:5-22. [PMID: 27066314 PMCID: PMC4799856 DOI: 10.1002/jcsm.12062] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Revised: 07/05/2015] [Accepted: 07/12/2015] [Indexed: 12/19/2022] Open
Abstract
Cachexia and muscle wasting are well recognized as common and partly reversible features of chronic obstructive pulmonary disease (COPD), adversely affecting disease progression and prognosis. This argues for integration of weight and muscle maintenance in patient care. In this review, recent insights are presented in the diagnosis of muscle wasting in COPD, the pathophysiology of muscle wasting, and putative mechanisms involved in a disturbed energy balance as cachexia driver. We discuss the therapeutic implications of these new insights for optimizing and personalizing management of COPD-induced cachexia.
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Affiliation(s)
- Karin J C Sanders
- Department of Respiratory Medicine NUTRIM School of Nutrition and Translational Research in Metabolism Maastricht The Netherlands
| | - Anita E M Kneppers
- Department of Respiratory Medicine NUTRIM School of Nutrition and Translational Research in Metabolism Maastricht The Netherlands
| | - Coby van de Bool
- Department of Respiratory Medicine NUTRIM School of Nutrition and Translational Research in Metabolism Maastricht The Netherlands
| | - Ramon C J Langen
- Department of Respiratory Medicine NUTRIM School of Nutrition and Translational Research in Metabolism Maastricht The Netherlands
| | - Annemie M W J Schols
- Department of Respiratory Medicine NUTRIM School of Nutrition and Translational Research in Metabolism Maastricht The Netherlands
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Schols AM, Ferreira IM, Franssen FM, Gosker HR, Janssens W, Muscaritoli M, Pison C, Rutten-van Mölken M, Slinde F, Steiner MC, Tkacova R, Singh SJ. Nutritional assessment and therapy in COPD: a European Respiratory Society statement. Eur Respir J 2014; 44:1504-20. [PMID: 25234804 DOI: 10.1183/09031936.00070914] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Nutrition and metabolism have been the topic of extensive scientific research in chronic obstructive pulmonary disease (COPD) but clinical awareness of the impact dietary habits, nutritional status and nutritional interventions may have on COPD incidence, progression and outcome is limited. A multidisciplinary Task Force was created by the European Respiratory Society to deliver a summary of the evidence and description of current practice in nutritional assessment and therapy in COPD, and to provide directions for future research. Task Force members conducted focused reviews of the literature on relevant topics, advised by a methodologist. It is well established that nutritional status, and in particular abnormal body composition, is an important independent determinant of COPD outcome. The Task Force identified different metabolic phenotypes of COPD as a basis for nutritional risk profile assessment that is useful in clinical trial design and patient counselling. Nutritional intervention is probably effective in undernourished patients and probably most when combined with an exercise programme. Providing evidence of cost-effectiveness of nutritional intervention is required to support reimbursement and thus increase access to nutritional intervention. Overall, the evidence indicates that a well-balanced diet is beneficial to all COPD patients, not only for its potential pulmonary benefits, but also for its proven benefits in metabolic and cardiovascular risk.
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Affiliation(s)
- Annemie M Schols
- NUTRIM School for Nutrition, Toxicology and Metabolism, Dept of Respiratory Medicine, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Ivone M Ferreira
- Asthma and Airways Centre, Toronto Western Hospital, Toronto, Canada Dept of Respiratory Medicine, McMaster University, Hamilton, Canada
| | - Frits M Franssen
- Program Development Centre, CIRO+ (Centre of Expertise for Chronic Organ Failure), Horn, The Netherlands
| | - Harry R Gosker
- NUTRIM School for Nutrition, Toxicology and Metabolism, Dept of Respiratory Medicine, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Wim Janssens
- Laboratory of Respiratory Medicine, Katholieke Universiteit, Leuven, Belgium
| | | | - Christophe Pison
- Clinique Universitaire de Pneumologie, Institut du Thorax, CHU Grenoble, Grenoble, France Inserm U1055, Grenoble, France Université Joseph Fourier, Grenoble, France European Institute for Systems Biology and Medicine, Lyon, France
| | - Maureen Rutten-van Mölken
- Erasmus University Rotterdam, Institute of Health Policy and Management, Rotterdam The Netherlands Erasmus University Rotterdam, Institute of Medical Technology Assessment, Rotterdam, The Netherlands
| | - Frode Slinde
- Dept of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Michael C Steiner
- Centre for Exercise and Rehabilitation Science, Leicester Respiratory Biomedical Research Unit, University Hospitals of Leicester NHS Trust, Glenfield Hospital, Leicester, UK
| | - Ruzena Tkacova
- Dept of Respiratory Medicine, Faculty of Medicine, P.J. Safarik University, Kosice, Slovakia L. Pasteur University Hospital, Kosice, Slovakia
| | - Sally J Singh
- Centre for Exercise and Rehabilitation Science, Leicester Respiratory Biomedical Research Unit, University Hospitals of Leicester NHS Trust, Glenfield Hospital, Leicester, UK
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Ferreira IM, Brooks D, White J, Goldstein R. Nutritional supplementation for stable chronic obstructive pulmonary disease. Cochrane Database Syst Rev 2012; 12:CD000998. [PMID: 23235577 DOI: 10.1002/14651858.cd000998.pub3] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Individuals with chronic obstructive pulmonary disease (COPD) and low body weight have impaired pulmonary status, reduced diaphragmatic mass, lower exercise capacity and higher mortality than those who are adequately nourished. Nutritional support may be useful for their comprehensive care. OBJECTIVES To assess the impact of nutritional support on anthropometric measures, pulmonary function, respiratory and peripheral muscles strength, endurance, functional exercise capacity and health-related quality of life (HRQoL) in COPD.If benefit is demonstrated, to perform subgroup analysis to identify treatment regimens and subpopulations that demonstrate the greatest benefits. SEARCH METHODS We identified randomised controlled trials (RCTs) from the Cochrane Airways Review Group Trials Register, a handsearch of abstracts presented at international meetings and consultation with experts. Searches are current to April 2012. SELECTION CRITERIA Two review authors independently selected trials for inclusion, assessed risk of bias and extracted the data. Decisions were made by consensus. DATA COLLECTION AND ANALYSIS We used post-treatment values when pooling the data for all outcomes, and change from baseline scores for primary outcomes. We used mean difference (MD) to pool data from studies that measured outcomes with the same measurement tool and standardised mean difference (SMD) when the outcomes were similar but the measurement tools different. We contacted authors of the primary studies for missing data.We established clinical homogeneity prior to pooling. We presented the results with 95% confidence intervals (CI) in the text and in a 'Summary of findings' table. MAIN RESULTS We included 17 studies (632 participants) of at least two weeks of nutritional support. There was moderate-quality evidence (14 RCTs, 512 participants, nourished and undernourished) of no significant difference in final weight between those who received supplementation and those who did not (MD 0.69 kg; 95% CI -0.86 to 2.24). Pooled data from 11 RCTs (325 undernourished patients) found a statistically significant weight gain (MD 1.65 kg; 95% CI 0.14 to 3.16) in favour of supplementation; three RCTs (116 mixed population) found no significant difference between groups (MD -1.28 kg; 95% CI -6.27 to 3.72). However, when analysed as change from baseline, there was significant improvement with supplementation: 14 RCTs (five of which had imputed SE), MD 1.62 kg (95% CI 1.27 to 1.96 ); 11 RCTs (malnourished), MD 1.73 kg (95% CI 1.29 to 2.17) and three RCTs (mixed), MD 1.44 kg (95% CI 0.68 to 2.19).There was low-quality evidence from five RCTs (six comparisons, 287 participants) supporting a significant improvement from baseline for fat-free mass/fat-free mass index (SMD 0.57; 95% CI 0.04 to 1.09), which was larger for undernourished patients (three RCTs, 125 participants; SMD 1.08; 95% CI 0.70 to 1.47). There was no significant change from baseline noted for adequately nourished patients (one RCT, 71 participants; SMD 0.27; 95% CI -0.20 to 0.73), or for a mixed population (two RCTs, 91 participants; SMD -0.05; 95% CI -0.76 to 0.65).There was moderate-quality evidence from two RCTs (91 mixed participants) that nutritional supplementation significantly improved fat mass/fat mass index from baseline (SMD 0.90; 95% CI 0.46 to 1.33).There was low-quality evidence (eight RCTs, 294 participants) of an increase in mid-arm muscle circumference change (MAMC; MD 0.29; 95% CI 0.02 to 0.57).There was low-quality evidence (six RCTs, 125 participants) of no significant difference in change from baseline scores for triceps measures (MD 0.54; 95% CI -0.16 to 1.24).There was low-quality evidence (five RCTs, 142 participants) of no significant difference between groups in the six-minute walk distance (MD 14.05 m; 95% CI -24.75 to 52.84), 12-minute walk distance or in shuttle walking. However, the pooled change from baseline for the six-minute walk distance was significant (MD 39.96 m; 95% CI 22.66 to 57.26).There was low-quality evidence (seven RCTs, 228 participants) that there was no significant difference between groups in the forced expiratory volume in one second (FEV(1); SMD -0.01; 95% CI -0.31 to 0.30) when measured in litres or percentage predicted.There was low-quality evidence (nine RCTs, 245 participants) of no significant between group difference in maximum inspiratory pressure (MIP; MD 3.54 cm H(2)O; 95% CI -0.90 to 7.99), but those who received supplementation had a higher maximum expiratory pressure (MEP; MD 9.55 cm H(2)O; 95% CI 2.43 to 16.68). For malnourished patients (seven RCTs, 189 participants), those with supplementation had significantly better MIP (MD 5.02; 95% CI 0.29 to 9.76) and MEP (MD 12.73; 95% CI 4.91 to 20.55).There was low-quality evidence (four RCTs, 130 participants) of no significant difference in HRQoL total score (SMD -0.36; 95% CI -0.77 to 0.06) when pooling results from both the St George's Respiratory Questionnaire (SGRQ) and the Chronic Respiratory Questionnaire (CRQ).Two trials (67 participants) used the SGRQ to measure individual domains of activity, impact and symptoms. At the end of treatment, the pooled total SGRQ score was both statistically and clinically significant (MD -6.55; 95% CI -11.7 to -1.41). The three RCTs (123 participants) that used the CRQ to measure the change in individual domains (dyspnoea, fatigue, emotion, mastery), found no significant difference between groups. AUTHORS' CONCLUSIONS We found moderate-quality evidence that nutritional supplementation promotes significant weight gain among patients with COPD, especially if malnourished. Nourished patients may not respond to the same degree to supplemental feeding. We also found a significant change from baseline in fat-free mass index/fat-free mass, fat mass/fat mass index, MAMC (as a measure of lean body mass), six-minute walk test and a significant improvement in skinfold thickness (as measure of fat mass, end score) for all patients. In addition, there were significant improvements in respiratory muscle strength (MIP and MEP) and overall HRQoL as measured by SGRQ in malnourished patients with COPD.These results differ from previous reviews and should be considered in the management of malnourished patients with COPD.
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Affiliation(s)
- Ivone M Ferreira
- Asthma and Airways Centre, Toronto Western Hospital, Toronto, Canada.
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Jantarakupt P, Porock D. Dyspnea Management in Lung Cancer: Applying the Evidence From Chronic Obstructive Pulmonary Disease. Oncol Nurs Forum 2007; 32:785-97. [PMID: 15990908 DOI: 10.1188/05.onf.785-797] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE/OBJECTIVES To provide an overview of mechanisms of dyspnea and causes of dyspnea in chronic obstructive pulmonary disease (COPD) and lung cancer and to critically review current pharmacologic and nonpharmacologic management of dyspnea for COPD and lung cancer. DATA SOURCES Published articles, abstracts, textbooks, and the authors' personal experiences with dyspnea management in COPD and lung cancer. DATA SYNTHESIS The causes of dyspnea in cancer are more varied than the causes of dyspnea in COPD; however, many are similar, thus providing the justification for recommending best practice from COPD research to be used in lung cancer. Dyspnea in both diseases is treated by corticosteroids, bronchodilators, antianxiety drugs, local anesthetics, and oxygen. However, when dyspnea is severe, morphine is the first choice. Using specific breathing techniques, positioning, energy conservation, exercise, and some dietary modifications and nutrient supplements can help with dyspnea management. CONCLUSIONS Pharmacologic and nonpharmacologic management of dyspnea in COPD can be applied to dyspnea related to lung cancer. Further research in the management of dyspnea in lung cancer is required, particularly controlled studies with larger sample sizes, to determine the effectiveness of the application of COPD dyspnea management in lung cancer. IMPLICATIONS FOR NURSING Previous studies provide a guideline for applying dyspnea management for COPD to cancer. The theoretical frameworks used in previous studies can be modified for conducting further study.
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Pison C, Cano N, Pichard C. Question 4-9. Prise en charge nutritionnelle, place des anabolisants. Rev Mal Respir 2005. [DOI: 10.1016/s0761-8425(05)85715-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Wilson MMG, Thomas DR, Rubenstein LZ, Chibnall JT, Anderson S, Baxi A, Diebold MR, Morley JE. Appetite assessment: simple appetite questionnaire predicts weight loss in community-dwelling adults and nursing home residents. Am J Clin Nutr 2005; 82:1074-81. [PMID: 16280441 DOI: 10.1093/ajcn/82.5.1074] [Citation(s) in RCA: 489] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Anorexia-related weight loss can have devastating consequences on quality-of-life, morbidity, and mortality. Without a simple tool to evaluate appetite, health care providers often use inaccurate surrogates, such as measurement of energy consumption and nutritional risk, to reflect appetite. OBJECTIVE We aimed to validate a simple tool for assessing appetite and predicting weight loss. DESIGN This was a cross-sectional measurement study conducted on long-term care residents and community-dwelling adults. Construct validity of the 8-item Council on Nutrition appetite questionnaire (CNAQ) and its 4-item derivative, the simplified nutritional appetite questionnaire (SNAQ), were examined through correlation with a previously validated research tool: the appetite hunger and sensory perception questionnaire (AHSP). The length and complexity of the AHSP render it inefficient for clinical use. The sensitivity and specificity of the CNAQ and SNAQ to predict significant weight loss were calculated. RESULTS Cronbach's alpha coefficients for the CNAQ were 0.47 (long-term care group) and 0.72 (community-dwelling group). In the long-term care group, the CNAQ correlated with the AHSP (r = 0.60, P < 0.001) and with the AHSP domains of taste (r = 0.47, P < 0.0001), hunger (r = 0.51, P < 0.0001), and smell (r = 0.53, P < 0.0001). The CNAQ showed sensitivities and specificities for 5% and 10% weight losses of 80.2 and 80.3 and 82.4 and 81.9, respectively. The SNAQ had sensitivities and specificities for 5% and 10% weight losses of 81.3 and 76.4 and 88.2 and 83.5, respectively. CONCLUSIONS The SNAQ and CNAQ are short, simple appetite assessment tools that predict weight loss in community-dwelling adults and long-term care residents. The SNAQ is a 4-item derivative of the CNAQ and thus is clinically more efficient.
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Ferreira IM, Brooks D, Lacasse Y, Goldstein RS, White J. Nutritional supplementation for stable chronic obstructive pulmonary disease. Cochrane Database Syst Rev 2005:CD000998. [PMID: 15846608 DOI: 10.1002/14651858.cd000998.pub2] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Low body weight in patients with chronic obstructive pulmonary disease (COPD) is associated with an impaired pulmonary status, reduced diaphragmatic mass, lower exercise capacity and higher mortality rate when compared to adequately nourished individuals with this disease. Nutritional support may therefore be a useful part of their comprehensive care. OBJECTIVES To conduct a systematic review of randomised controlled trials (RCTs) to clarify whether nutritional supplementation (caloric supplementation for at least 2 weeks) improved anthropometric measures, pulmonary function, respiratory muscle strength and functional exercise capacity in patients with stable COPD. SEARCH STRATEGY Randomized controlled trials (RCTs) were identified from the Cochrane Airways Group register of RCTs, a hand-search of abstracts presented at international meetings and consultation with experts. Searches are current as of March 2004. SELECTION CRITERIA Two reviewers independently selected trials for inclusion, assessed quality and extracted the data. DATA COLLECTION AND ANALYSIS Within each trial and for each outcome, we calculated an effect size. The effect sizes were then pooled by a random-effects model. Homogeneity among the effect sizes was also tested. MAIN RESULTS Eleven studies recruiting 352 participants met the inclusion criteria. Eight papers were considered as high quality. Two studies were double-blinded. For each of the outcomes studied, the effect of nutritional support was small: the 95% confidence intervals around the pooled effect sizes all included zero. The effect of nutritional support was homogeneous across studies. AUTHORS' CONCLUSIONS Nutritional support had no significant effect on anthropometric measures, lung function or exercise capacity in patients with stable COPD.
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Affiliation(s)
- I M Ferreira
- St Catherines, Ontario, 76 Roehampton Avenue, Canada, L2M 7W5.
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10
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Ferreira IM. Nutrition in Stable Chronic Obstructive Pulmonary Disease. Clin Nutr 2005. [DOI: 10.1016/b978-0-7216-0379-7.50040-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Ferreira IM. Chronic obstructive pulmonary disease and malnutrition: why are we not winning this battle? ACTA ACUST UNITED AC 2003. [DOI: 10.1590/s0102-35862003000200011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVES: To review the mechanisms involved in the origin of malnutrition in patients with chronic obstructive pulmonary disease (COPD), and to make a systematic review of randomized controlled studies, to clarify the contribution of nutritional supplementation in patients with stable COPD. METHOD: A systematic review of articles published in the field of nutrition, in any language and from several sources, including Medline, Embase, Cinahl, and the Cochrane Registry on COPD, as well as studies presented at congresses in the US and Europe. RESULTS: Studies on nutritional supplementation for more than two weeks showed a very small effect, not reaching statistical significance. A linear regression study found that old age, relative anorexia, and high inflammatory response are associated with non-response to nutritional therapy. CONCLUSION: Currently, there is no evidence that nutritional supplementation is truly effective in patients with COPD. Factors associated with non-response suggest a relationship with the degree of inflammation, including high TNF-alpha levels. Measuring inflammation markers may be useful to determine prognosis and adequate therapy. Treatment with anti-inflammatory cytokines or cytokine inhibitors seems promising for the future.
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12
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Cai B, Zhu Y, Ma YI, Xu Z, Zao YI, Wang J, Lin Y, Comer GM. Effect of supplementing a high-fat, low-carbohydrate enteral formula in COPD patients. Nutrition 2003; 19:229-32. [PMID: 12620524 DOI: 10.1016/s0899-9007(02)01064-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE One of the goals in treating patients with chronic obstructive pulmonary disease (COPD) who suffer from hypoxemia, hypercapnia, and malnutrition is to correct the malnutrition without increasing the respiratory quotient and minimize the production of carbon dioxide. This 3-wk study evaluated the efficacy of feeding a high-fat, low-carbohydrate (CHO) nutritional supplement as opposed to a high-carbohydrate diet in COPD patients on parameters of pulmonary function.S METHODS: Sixty COPD patients with low body weight (<90% ideal body weight) were randomized to the control group, which received dietary counseling for a high-CHO diet (15% protein, 20% to 30% fat, and 60% to 70% CHO), or the experimental group, which received two to three cans (237 mL/can) of a high-fat, low-CHO oral supplement (16.7% protein, 55.1% fat, and 28.2% CHO) in the evening as part of the diet. Measurements of lung function (forced expiratory volume in 1 s or volume of air exhaled in 1 s of maximal expiration, minute ventilation, oxygen consumption per unit time, carbon dioxide production in unit time, and respiratory quotient) and blood gases (pH, arterial carbon dioxide tension, and arterial oxygen tension) were taken at baseline and after 3 wk. RESULTS Lung function measurements decreased significantly and forced expiratory volume increased significantly in the experimental group. CONCLUSION This study demonstrates that pulmonary function in COPD patients can be significantly improved with a high-fat, low-CHO oral supplement as compared with the traditional high-CHO diet.
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Affiliation(s)
- Baiqiang Cai
- Chinese Academy of Medical Science, Beijing, China
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13
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Abstract
Patients with chronic obstructive pulmonary disease (COPD) demonstrate classic signs of undernutrition. A low body mass, weight lose, and decrease in lean body mass have been associated with impaired functional status and poor outcome. The nutritional deficiencies accompanying COPD have been refractory to strategies aimed at increasing calorie intake, indicating that the underlying pathophysiology is not a simple nutritional defect amenable to correction. The association of cytokine-induced inflammatory markers in COPD patients suggests that interventions aimed at controlling cytokine production may be required to reverse the cachexia syndrome and improve functional status.
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Affiliation(s)
- David R Thomas
- Division of Geriatric Medicine, Saint Louis Health Sciences Center, Saint Louis University, 1402 South Grand Boulevard M238, Saint Louis, MO 63104, USA.
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14
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Larson JL, Covey MK, Corbridge S. Inspiratory muscle strength in chronic obstructive pulmonary disease. AACN CLINICAL ISSUES 2002; 13:320-32. [PMID: 12011602 DOI: 10.1097/00044067-200205000-00015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Chronic obstructive pulmonary disease is associated with a functional weakness of the inspiratory muscles. Multiple factors contribute to the decline in functional strength including hyperinflation of the chest, deterioration in nutritional status, and the indirect effects of an exacerbation. The decreased inspiratory muscle strength contributes to sensations of dyspnea and places individuals at risk for respiratory muscle fatigue. The worsening dyspnea causes individuals to reduce their physical activities and ultimately become physically deconditioned. Maximal inspiratory pressure is commonly used to measure functional strength of the inspiratory muscles, and interventions to minimize the extent of decline include inspiratory muscle training, aerobic exercise training, nutritional supplementation, and methods to prevent exacerbations. In the critical care unit, multiple comorbid conditions contribute to further decline in inspiratory muscle strength, making it important to assess respiratory muscle function regularly.
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Affiliation(s)
- Janet L Larson
- Department of Medical Surgical Nursing, College of Nursing, University of Illinois at Chicago, 60612, USA.
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Tang NLS, Chung ML, Elia M, Hui E, Lum CM, Luk JKH, Jones MG, Woo J. Total daily energy expenditure in wasted chronic obstructive pulmonary disease patients. Eur J Clin Nutr 2002; 56:282-7. [PMID: 11965503 DOI: 10.1038/sj.ejcn.1601299] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2001] [Revised: 06/25/2001] [Accepted: 07/02/2001] [Indexed: 11/09/2022]
Abstract
OBJECTIVES To investigate total daily energy expenditure in chronic obstructive pulmonary disease (COPD) patients during a rehabilitation programme. DESIGN Observational study involving a case and a control group. SUBJECTS Ten COPD patients (six with body mass index (BMI) <18.5 kg/m(2) and four with BMI >18.5 kg/m(2)) were evaluated for their energy expenditure profile. Four additional healthy age-matched volunteers were also included for methodology evaluation. INTERVENTIONS Measurements of total daily energy expenditure (TEE), resting energy expenditure (REE) and diet-induced thermogenesis (DIT) and energy intake were undertaken by indirect calorimetry and bicarbonate-urea methods and dietary records. RESULTS REE in COPD patients was not significantly different from that predicted by the Harris-Benedict equation. Before the exercise day the mean TEE was 1508 kcal/day and physical activity level (PAL as calculated by TEE/REE) was 1.52. On the exercise day the TEE increased to 1568 kcal/day and PAL was 1.60, but neither of these changes were significant. The energy cost of increased physical activity during rehabilitation exercise was estimated to be 191 kcal/day. No significant change was found in DIT between the two patient groups. However, overall energy balances were found to be negative (-363 kcal/day). CONCLUSION The rehabilitation programme did not cause a significant energy demand in COPD patients. TEE in COPD patients was not greater than in free-living healthy subjects. Patients, who were underweight, did not have a higher TEE than patients with normal weight. This suggested that malnutrition in COPD patients was not due to an increased energy expenditure. On the other hand, a significant negative energy balance due to insufficient energy intake was found in seven out of 10 patients.
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Affiliation(s)
- N L S Tang
- Department of Chemical Pathology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, People's Republic of China.
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16
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Rodríguez González-Moro JM, de Lucas Ramos P, Martínez Abad Y. [Function of respiratory muscles in malnutrition and in the critically ill patient]. Arch Bronconeumol 2002; 38:131-6. [PMID: 11900691 DOI: 10.1016/s0300-2896(02)75171-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Thorsdottir I, Gunnarsdottir I. Energy intake must be increased among recently hospitalized patients with chronic obstructive pulmonary disease to improve nutritional status. JOURNAL OF THE AMERICAN DIETETIC ASSOCIATION 2002; 102:247-9. [PMID: 11846120 DOI: 10.1016/s0002-8223(02)90058-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Inga Thorsdottir
- Unit for Nutrition Research, Landspitali University Hospital, Reykjavik, Iceland
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Ferreira IM, Brooks D, Lacasse Y, Goldstein RS, White J. Nutritional supplementation for stable chronic obstructive pulmonary disease. Cochrane Database Syst Rev 2002:CD000998. [PMID: 11869582 DOI: 10.1002/14651858.cd000998] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Low body weight in patients with chronic obstructive pulmonary disease (COPD) is associated with an impaired pulmonary status, reduced diaphragmatic mass, lower exercise capacity and higher mortality rate when compared to adequately nourished individuals with this disease. Nutritional support may therefore be a useful part of their comprehensive care. OBJECTIVES To conduct a systematic review of randomized controlled trials (RCTs) to clarify whether nutritional supplementation (caloric supplementation for at least 2 weeks) improved anthropometric measures, pulmonary function, respiratory muscle strength and functional exercise capacity in patients with stable COPD. SEARCH STRATEGY Randomized controlled trials (RCTs) were identified from the Cochrane Airways Group register of RCTs, a hand-search of abstracts presented at international meetings and consultation with experts. SELECTION CRITERIA Two reviewers independently selected trials for inclusion, assessed quality and extracted the data. DATA COLLECTION AND ANALYSIS Within each trial and for each outcome, we calculated an effect size. The effect sizes were then pooled by a random-effects model. Homogeneity among the effect sizes was also tested. MAIN RESULTS From 272 references, nine RCTs were ultimately included. Six papers were considered as high quality and only two studies were double-blinded. For each of the outcomes studied, the effect of nutritional support was small: the 95% confidence intervals around the pooled effect sizes all included zero. The effect of nutritional support was homogeneous across studies. An additional search conducted in August 2001 did not identify further studies. REVIEWER'S CONCLUSIONS Nutritional support had no significant effect on anthropometric measures, lung function or exercise capacity in patients with stable COPD.
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Affiliation(s)
- I M Ferreira
- Respiratory Division, University of Toronto, 82 Buttonwood, Toronto, Ontario, Canada, M6M 2J5.
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19
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Akner G, Cederholm T. Treatment of protein-energy malnutrition in chronic nonmalignant disorders. Am J Clin Nutr 2001; 74:6-24. [PMID: 11451713 DOI: 10.1093/ajcn/74.1.6] [Citation(s) in RCA: 168] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Protein-energy malnutrition (PEM) is common in connection with chronic disease and is associated with increased morbidity and mortality. Because the risk of PEM is related to the degree of illness, the causal connections between malnutrition and a poorer prognosis are complex. It cannot automatically be inferred that nutritional support will improve the clinical course of patients with wasting disorders. We reviewed studies of the treatment of PEM in cases of chronic obstructive pulmonary disease, chronic heart failure, stroke, dementia, rehabilitation after hip fracture, chronic renal failure, rheumatoid arthritis, and multiple disorders in the elderly. Several methodologic problems are associated with nutrition treatment studies in chronically ill patients. These problems include no generally accepted definition of PEM, uncertain patient compliance with supplementation, and a wide range of outcome variables. Avail-able treatment studies indicate that dietary supplements, either alone or in combination with hormonal treatment, may have positive effects when given to patients with manifest PEM or to patients at risk of developing PEM. In chronic obstructive pulmonary disease, nutritional treatment may improve respiratory function. Nutritional therapy of elderly women after hip fractures may speed up the rehabilitation process. When administered to elderly patients with multiple disorders, diet therapy may improve functional capacity. The data regarding nutritional treatment of the conditions mentioned above is still inconclusive. There is still a great need for randomized controlled long-term studies of the effects of defined nutritional intervention programs in chronically ill and frail elderly with a focus on determining clinically relevant outcomes.
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Affiliation(s)
- G Akner
- Departments of Geriatric Medicine at Karolinska Hospital and Huddinge University Hospital, Stockholm, Sweden
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20
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Ferreira I, Brooks D, Lacasse Y, Goldstein R. Nutritional intervention in COPD: a systematic overview. Chest 2001; 119:353-63. [PMID: 11171709 DOI: 10.1378/chest.119.2.353] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
OBJECTIVE We conducted a systematic overview of randomized controlled trials (RCTs) to clarify the contribution of nutritional supplementation for patients with stable COPD. METHODS RCTs were identified from several sources, including the Cochrane Airways Group register of RCTs, a hand search of abstracts presented at international meetings, and consultation with experts. Two reviewers independently selected trials for inclusion, assessed quality, and extracted the data. RESULTS Twenty-one reports were classified according to the type, duration of supplementation, and the presence of anabolic substances. High carbohydrate meals were associated with an increase in carbon dioxide production and a decrease in exercise capacity. Short-term crossover studies in which diets of various compositions were administered supported the notion that high carbohydrate loads increase the stress on the ventilatory system. The influence of longer-term supplementation (> 2 weeks) on weight, anthropometry, and exercise capacity varied, without there being a consistent effect. Lean body weight was only occasionally reported and health-related quality of life too rarely to be included as an outcome. The influence of recombinant human growth hormone was disappointing. Anabolic steroids increased body weight and lean body mass, but had little influence on exercise capacity. CONCLUSION This systematic overview in patients with COPD supports the notion that those with marginal ventilatory reserve might benefit from a dietary regimen in which a high percentage of calories are supplied by fat. Although there are reports of the benefits of nutritional repletion, trials of > 2 weeks failed to show consistent benefit on body weight. Evaluating nutritional repletion is hampered by the absence of information regarding body composition, exercise, and health-related quality of life. Growth hormone has not been shown to be useful. Further studies are needed to refine the beneficial effects of anabolic steroids as adjunctive agents together with nutritional support and exercise.
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Affiliation(s)
- I Ferreira
- Departments of Medicine, the University of Toronto and Respiratory Medicine, West Park Hospital, Toronto, Ontario, Canada.
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21
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Ferreira IM, Brooks D, Lacasse Y, Goldstein RS. Nutritional support for individuals with COPD: a meta-analysis. Chest 2000; 117:672-8. [PMID: 10712990 DOI: 10.1378/chest.117.3.672] [Citation(s) in RCA: 92] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
RATIONALE Malnutrition in patients with COPD is associated with an impaired pulmonary status, reduced diaphragmatic mass, lower exercise capacity, and higher mortality rate when compared to adequately nourished individuals with COPD. Nutritional support may therefore be a useful part of their comprehensive care. PURPOSE To conduct a meta-analysis of randomized controlled trials (RCTs) to clarify whether nutritional supplementation (caloric supplementation for at least 2 weeks) improved anthropometric measures, pulmonary function, respiratory muscle strength, and functional exercise capacity in patients with stable COPD. METHODS RCTs were identified from several sources, including the Cochrane Airways Group register of RCTs, a hand search of abstracts presented at international meetings, and consultation with experts. Two reviewers independently selected trials for inclusion, assessed quality, and extracted the data. Within each trial and for each outcome, we calculated an effect size. The effect sizes were then pooled by a random-effects model. Homogeneity among the effect sizes was also tested. RESULTS From 272 references, nine RCTs were ultimately included. Six articles were considered as high quality. Only two studies were double blinded. For each of the outcomes studied, the effect of nutritional support was small: the 95% confidence intervals around the pooled effect sizes all included zero. The effect of nutritional support was homogeneous across studies. CONCLUSION Nutritional support had no effect on improving anthropometric measures, lung function, or functional exercise capacity among patients with stable COPD.
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Affiliation(s)
- I M Ferreira
- Respitratory Medicine Program, West Park Hospital, Toronto, Canada.
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22
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Abstract
Malnutrition is common among individuals suffering from hypoxemic chronic obstructive pulmonary disease (COPD), advanced HIV disease, and in patients with chronic, severe congestive heart failure. Although increased morbidity and mortality has been associated with weight loss in these conditions, the pathophysiology of malnutrition remains somewhat unclear for each. In COPD, the primary postulated mechanism is hypermetabolism resulting in elevated total caloric expenditure arising from increased airway resistance, increased O2 cost of ventilation, increased dietary induced thermogenesis, inefficient substrate use and perhaps, increased levels of proinflammatory cytokines. In AIDS, postulated mechanisms include hypermetabolism arising from increased activation of proinflammatory cytokines, along with futile cycling of fatty acids and de novo lipogenesis early in the course of HIV infection; intestinal malabsorption and anorexia also play a role in many inflicted individuals. In cardiac cachexia, dietary and metabolic factors, and levels and activity of cytokines, thyroid hormone, catecholamines and cortisol have been suggested as being responsible for causing weight loss in a most cases.
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Affiliation(s)
- M O Farber
- Division of Pulmonary, Occupational, and Critical Care Medicine, Department of Medicine, Indiana University School of Medicine, Indianapolis , IN 46202, USA
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23
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Chapman-Novakofski K, Brewer MS, Riskowski J, Burkowski C, Winter L. Alterations in taste thresholds in men with chronic obstructive pulmonary disease. JOURNAL OF THE AMERICAN DIETETIC ASSOCIATION 1999; 99:1536-41. [PMID: 10608947 DOI: 10.1016/s0002-8223(99)00377-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE Weight loss is a common occurrence in chronic obstructive pulmonary disease (COPD), and efforts to increase energy intake are often unsuccessful. The objectives of this study were to determine if there were any taste threshold differences between normal-weight and underweight men with COPD, and to determine if there was any association between absolute and recognition taste thresholds and biochemical data associated with COPD. DESIGN Cross-sectional comparative. SUBJECTS/SETTING Potential subjects were identified by their physicians. Forty-six men were willing and eligible to participate. Subjects were given sets of triangle taste tests for 4 tastants: sweet, salty, bitter, and sour. Additional information collected included health history data and biochemical data. Subjects were classified as underweight or normal weight for comparison. STATISTICAL ANALYSES PERFORMED Independent t tests and one-way analysis of variance were used to determine differences between persons in the underweight (n = 17) and normal-weight (n = 29) groups, and the influence of confounding variables. Bivariate correlations were used to determine associations between tastant thresholds and biochemical indexes for the entire group (N = 46). Stepwise regression analysis was used to determine significant variables in prediction of thresholds of the 4 tastants for the entire group (N = 46). RESULTS Underweight subjects had a significantly higher bitter taste threshold than normal-weight subjects (5.76 vs 5.10, P = .016). A significant negative correlation was found between absolute bitter and bicarbonate (r = -.39, P = .01) and PCO2 (r = -.34, P = .02). A significant regression equation for absolute bitter taste threshold was determined (P = .011) on the basis of bicarbonate values; and upon body mass index for bitter taste recognition threshold (P = .031). APPLICATIONS Recognition that patients with COPD may have alterations in taste that are associated with weight status and/or biochemical status can guide dietitians in their recommendations for meal plans targeting individual weight goals.
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Affiliation(s)
- K Chapman-Novakofski
- Department of Food Science and Human Nutrition, University of Illinois, Urbana 61801, USA
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24
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Landbo C, Prescott E, Lange P, Vestbo J, Almdal TP. Prognostic value of nutritional status in chronic obstructive pulmonary disease. Am J Respir Crit Care Med 1999; 160:1856-61. [PMID: 10588597 DOI: 10.1164/ajrccm.160.6.9902115] [Citation(s) in RCA: 624] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The association between low body mass index (BMI) and poor prognosis in patients with chronic obstructive pulmonary disease (COPD) is a common clinical observation. We prospectively examined whether BMI is an independent predictor of mortality in subjects with COPD from the Copenhagen City Heart Study. In total, 1,218 men and 914 women, aged 21 to 89 yr, with airway obstruction defined as an FEV(1)-to-FVC ratio of less than 0.7, were included in the analyses. Spirometric values, BMI, smoking habits, and respiratory symptoms were assessed at the time of study enrollment, and mortality from COPD and from all causes during 17 yr of follow-up was analyzed with multivariate Cox regression models. After adjustment for age, ventilatory function, and smoking habits, low BMI was predictive of a poor prognosis (i.e., higher mortality), with relative risks (RRs) in underweight subjects as compared with that in subjects of normal weight of 1.64 (95% confidence interval [CI]: 1.20 to 2.23) in men and 1.42 (95% CI: 1.07 to 1.89) in women. However, the association between BMI and survival differed significantly with stage of COPD. In mild and moderate COPD there was a nonsignificant U-shaped relationship, with the lowest risk occurring in normal-weight to overweight subjects, whereas in severe COPD, mortality continued to decrease with increasing BMI (test for trend: p < 0.001). Similar results were found for COPD-related deaths, with the strongest associations found in severe COPD (RR for low versus high BMI: 7.11 [95% CI: 2.97 to 17.05]). We conclude that low BMI is an independent risk factor for mortality in subjects with COPD, and that the association is strongest in subjects with severe COPD.
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Affiliation(s)
- C Landbo
- Institute of Preventive Medicine, University of Copenhagen, Copenhagen, Denmark
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25
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Abstract
Respiratory muscle injury may result from excessive loading due to a decrease in respiratory muscle strength, an increase in the work of breathing, or an increase in the rate of ventilation. Other conditions such as hypoxemia, hypercapnia, aging, decreased nutrition, and immobilization may potentiate respiratory muscle injury. Respiratory muscle injury has been shown in animal models using direct muscle or phrenic nerve stimulation, acute inspiratory resistive loading, tracheal banding, corticosteroids, phrenic nerve section, and the mdx mouse. Although numerous examples of diaphragm injury have been shown in animal models, evidence in humans is sparse. Potential mechanisms which may contribute to respiratory muscle injury include high levels of intracellular calcium-activated degradative enzymes, non-uniformity of stresses and strains, plasma membrane disruptions, and activation of the inflammatory process.
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Affiliation(s)
- W D Reid
- School of Rehabilitation Sciences, University of British Columbia, Vancouver, Canada
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26
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Juompan L, Puel J, Fournié GJ, Benoist H. Study of LDL and acetylated LDL endocytosis by mononuclear cells in HIV infection. BIOCHIMICA ET BIOPHYSICA ACTA 1995; 1272:21-8. [PMID: 7545009 DOI: 10.1016/0925-4439(95)00053-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Activated lymphocytes have a high level of low density lipoprotein (LDL) uptake as compared to resting lymphocytes, whereas scavenger receptors for acetylated LDL (Ac-LDL) are expressed on limited number of immune cells, i.e., monocytes/macrophages. The endocytosis of LDL and Ac-LDL by mononuclear cells was studied during in vitro and in vivo HIV infection, in order to use LDL and Ac-LDL as carriers of antiviral and/or immunomodulatory drugs towards lymphocytes and monocytes. The uptake of LDL and Ac-LDL was analyzed by cytofluorimetry. LDL endocytosis in PHA/IL2-activated lymphocytes was higher than in resting lymphocytes. In vitro HIV infection of PHA/IL2-activated lymphocytes did not alter the high LDL endocytosis in lymphocytes. CD4+ and CD8+ cells. In a group of 12 symptomatic patients there was no alteration of LDL endocytosis in lymphocytes, CD4 and CD8 lymphocytes. In another group of 23 individuals, the Ac-LDL endocytosis mediated by CD14+ monocytes was unaltered in asymptomatic patients (n = 6) and in some symptomatic patients (n = 6, CD14+ cells > 100/mm3). On the contrary, in other symptomatic patients (n = 11, CD14+ cells < 100/mm3), the number of Ac-LDL+ CD14+ cells decreased, whereas their efficiency of Ac-LDL endocytosis increased as compared to those of other HIV+ patients. In conclusion, the use of lipoproteins as carriers to increase the drug delivery to CD4+ lymphocytes and to CD14+ monocytes can be envisaged, since: (i) the LDL endocytosis was not impaired in CD4 lymphocytes of HIV+ patients, and (ii) the Ac-LDL uptake by monocytes was altered only in some patients of stage IV.
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MESH Headings
- Antigens, CD/analysis
- Antigens, Differentiation, Myelomonocytic/analysis
- Binding, Competitive
- CD3 Complex/analysis
- CD4-Positive T-Lymphocytes/immunology
- CD4-Positive T-Lymphocytes/metabolism
- CD4-Positive T-Lymphocytes/virology
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- CD8-Positive T-Lymphocytes/virology
- Cell Adhesion Molecules
- Cells, Cultured
- Drug Carriers/metabolism
- Endocytosis/physiology
- HIV Infections/immunology
- HIV Infections/metabolism
- HIV-1/physiology
- Humans
- Leukocytes, Mononuclear/immunology
- Leukocytes, Mononuclear/metabolism
- Leukocytes, Mononuclear/virology
- Lipopolysaccharide Receptors
- Lipoproteins, LDL/metabolism
- Lymphocyte Activation
- Monocytes/immunology
- Monocytes/metabolism
- Monocytes/virology
- Receptors, LDL/metabolism
- Receptors, Scavenger
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Affiliation(s)
- L Juompan
- INSERM U 395, Université Paul Sabatier, Toulouse, France
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Marcus CL, Carroll JL, Koerner CB, Hamer A, Lutz J, Loughlin GM. Determinants of growth in children with the obstructive sleep apnea syndrome. J Pediatr 1994; 125:556-62. [PMID: 7931873 DOI: 10.1016/s0022-3476(94)70007-9] [Citation(s) in RCA: 225] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Failure to thrive is a common complication of childhood obstructive sleep apnea syndrome (OSAS). To further evaluate its cause, we obtained 3-day dietary records, anthropometric measurements, polysomnography, and measurements of energy expenditure during sleep (SEE) in children with OSAS before and after tonsillectomy and adenoidectomy. Fourteen children were studied (mean age, 4 +/- 1 (SD) years). During initial polysomnography, patients had 6 +/- 3 episodes of obstructive apnea/hr, an arterial oxygen saturation nadir of 85% +/- 8%, and peak end-tidal carbon dioxide tension of 52 +/- 6 mm Hg. After surgery, OSAS resolved in all patients. The standard deviation score (z score) for weight increased from -0.30 +/- 1.47 to 0.04 +/- 1.34 (p < 0.005), despite unaltered caloric intake (91 +/- 30 vs 90 +/- 27 kcal/kg per day; not significant). The initial SEE (averaged over all sleep states) was 51 +/- 6 kcal/kg per day; postoperatively, it decreased to 46 +/- 7 kcal/kg per day (p < 0.005). Although SEE decreased during all sleep stages, the greatest decrease occurred during rapid eye movement sleep. The patients with the highest SEE on initial study had the lowest z scores (r = -0.62; p < 0.05). We conclude that SEE decreases and weight improves after resolution of OSAS. We speculate that the poor growth seen in some children with OSAS is secondary to increased caloric expenditure caused by increased work of breathing during sleep.
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Affiliation(s)
- C L Marcus
- Eudowood Division of Pediatric Respiratory Sciences, Johns Hopkins University, Baltimore, Maryland
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Sridhar MK, Carter R, Lean ME, Banham SW. Resting energy expenditure and nutritional state of patients with increased oxygen cost of breathing due to emphysema, scoliosis and thoracoplasty. Thorax 1994; 49:781-5. [PMID: 8091323 PMCID: PMC475123 DOI: 10.1136/thx.49.8.781] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Weight loss is a well recognised feature of patients with emphysematous chronic obstructive pulmonary disease (COPD). It has been suggested that this weight loss could be due to a hypermetabolic state resulting from the increased oxygen cost of breathing (OCB). To clarify the relation between resting energy expenditure (REE), nutritional state, and OCB these indices were measured in patients with respiratory impairment and an increased OCB due to COPD, scoliosis, and thoracoplasty. METHODS Eighteen patients (six COPD, six scoliosis, six thoracoplasty) of mean (SD) age 59.9 (8.6) years (8M, 10F) and six controls (45.5 (9.9) years; 2M, 4F) were studied. OCB was estimated by the addition of dead space to the breathing circuit and REE was measured by indirect calorimetry using a ventilated canopy system. Height, arm span, weight, triceps skin fold thickness (TSF), mid-arm muscle circumference (MAMC), forced expiratory volume in one second (FEV1), and vital capacity (VC) were measured in all study subjects. RESULTS OCB was elevated in all patient groups (mean 7.0 ml/l) compared with controls (1.9 ml/l). All patients with COPD, four with scoliosis, three with thoracoplasty, and none of the controls were < 90% ideal body weight. Mean (SD) measured REE as % predicted (Harris-Benedict equation) was 103.8 (7.6) in patients with COPD, 105.5 (10.9) in those with scoliosis, 106.3 (6.9) in the thoracoplasty patients, and 103.3 (3.4) in controls. One patient with COPD, two with scoliosis, two with thoracoplasty, but no controls were hypermetabolic (REE > 110% predicted). In all groups there was a negative relation between OCB and lung function (OCB v FEV1 r = -0.83 in COPD, -0.62 in scoliosis, -0.67 in thoracoplasty, and -0.76 in controls). There was no correlation between REE and OCB or MAMC. CONCLUSIONS In patients with respiratory disease OCB (augmented ventilation) is related to lung function but not to REE. This is evidence against the hypothesis that hypermetabolism due to increased oxygen cost of breathing at rest is the sole or major cause of malnutrition in patients with lung disease.
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Affiliation(s)
- M K Sridhar
- Department of Respiratory Medicine, Glasgow Royal Infirmary, UK
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