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      Efeitos negativos da insuficiência renal crônica sobre a função pulmonar e a capacidade funcional Translated title: Negative effects of chronic kidney failure on lung function and functional capacity

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          Abstract

          OBJETIVO: Avaliar a função pulmonar e a capacidade funcional em pacientes com insuficiência renal crônica (IRC) em hemodiálise e em pacientes após transplante renal. MÉTODOS: Foram avaliados 72 indivíduos, sendo 32 pacientes com IRC em hemodiálise (GD) há mais de 6 meses, 10 pacientes transplantados renais (GT) há, pelo menos, 6 meses e 30 sujeitos saudáveis para grupo controle (GC). Todos os grupos foram avaliados utilizando espirometria, pressões inspiratória (PImax) e expiratória (PEmax) máximas e teste da caminhada em seis minutos (TC6min). Para análise estatística, foi utilizado o programa SPSS 12.0, com nível mínimo de significância α<0,05. RESULTADOS: Foram encontrados resultados estatisticamente significativos (p<0,01) para: diminuição da função pulmonar no GD para Capacidade vital forçada (CVF), Volume expirado forçado (VEF1), Ventilação voluntária máxima (VVM), Capacidade vital (CV), PImax, PEmax e, para o GT, diminuição do VEF1 e VVM, quando comparados ao GC (ANOVA uma via/post hoc Fischer); associação (qui-quadrado) entre diminuição da PImax e pertencer ao GD (α=0,5, p<0,001); menor desempenho no TC6min no GD e GT (p<0,01) quando comparados ao GC (ANOVA uma via/post hoc Fischer). Encontrou-se correlação significativa (coeficiente de Pearson) entre PImax e PEmax (r=0,752, P<0,01). CONCLUSÕES: Pode-se concluir que existem alterações na capacidade funcional e na função pulmonar do paciente com IRC em hemodiálise, as quais são indicativas de prejuízos funcionais que não se apresentam completamente revertidos no paciente transplantado renal.

          Translated abstract

          OBJECTIVE: To evaluate lung function and functional capacity in patients with chronic kidney failure (CKF) undergoing dialysis and in patients after kidney transplant. METHODS: Seventy-two participants were evaluated: 32 patients with CKF on dialysis (DG) for at least six months, ten patients who had kidney transplants (TG) at least six months earlier, and 30 healthy subjects as a control group (CG). All groups were evaluated using spirometry, with maximum inspiratory pressure (MIP) and maximum expiratory pressure (MEP), and using the six-minute walking test (6MWT). The SPSS 12.0 software was used for statistical analysis, with a minimum significance level of α<0.05. RESULTS: There was a decreased lung function in the DG for FVC, FEV1, MVV, VC, MIP and MEP, and decreased FEV1 and MVV in the TG compared to the CG (one-way ANOVA/Fisher's post-hoc; p<0.01). There was also an association (chi-square) between decreased MIP and belonging to the DG (α=0.5, p<0.001), between lower performance in the 6MWT for the DG and TG (p<0.01) compared to the CG (one-way ANOVA/Fisher's post-hoc), and between MIP and MEP (Pearson's coefficient; r=0.752; p<0.01). CONCLUSIONS: Patients with CKF undergoing dialysis showed impaired functional capacity and lung function that were not completely reverted in the kidney transplant patients.

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          Most cited references42

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          Doença renal crônica: definição epidemiologia e classificação

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            Body mass index and mortality in 'healthier' as compared with 'sicker' haemodialysis patients: results from the Dialysis Outcomes and Practice Patterns Study (DOPPS).

            Haemodialysis (HD) patients with lower body mass index (BMI) have a higher relative mortality risk (RR), irrespective of race. However, only Asian Americans treated with HD have been found to have an elevated RR with higher BMI. Asian Americans on HD are 'healthier' than other race groups (i.e. have better overall survival). We hypothesized that an increased mortality risk might be associated with high BMI in a variety of other 'healthier' subgroups of HD patients. The prospective Dialysis Outcomes and Practice Patterns Study (DOPPS) provided baseline demographic, comorbidity and BMI data on 9714 HD patients in the US and Europe (France, Germany, Italy, Spain, and the UK) from 1996-2000. Using multivariate survival analyses, we evaluated BMI-mortality relationships in HD subpopulations defined by continent, race (black and white), gender, tertiles of severity of illness (based on a score derived from comorbid conditions and serum albumin concentration), age ( or=65), smoking, and diabetic status. Relative mortality risk decreased with increasing BMI. This was statistically significant (P<0.007) except for the smallest subgroup of patients who were <45 years old and were also in the healthiest tertile of comorbidity. All else equal, BMI <20 was consistently associated with the highest relative mortality risk. Overall a lower relative mortality risk (RR) as compared with BMI 23-24.9, was found for overweight (BMI 25-29.9; RR 0.84, P=0.008), for mild obesity (BMI 30-34.9; RR 0.73, P=0.0003), and for moderate obesity (BMI 35-39.9; RR 0.76, P=0.02). In a wide variety of HD patient subgroups, differing with respect to their baseline health status, increasing body size correlates with a decreased mortality risk. This contrasts with the association between BMI and mortality in the general population, and deserves further study.
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              Musculoskeletal manifestations of chronic renal failure.

              Musculoskeletal problems remain among the main limitations of the quality of life of renal failure patients, in particular of those treated with long-term maintenance dialysis. Renal osteodystrophy continues to receive great attention. The mechanisms of uremic skeletal resistance to parathormone (PTH) are further investigated. The assay used for the dosage of "intact PTH" has been found to detect 7-84 fragments with an inhibitory effect on the action of the whole hormone. A decrease in the density of PTH receptor on osteoblasts is another recently evidenced factor. Investigations of the recently described RANK-RANKL system have demonstrated an increase in serum osteprotegerin levels, which, together with the two above-mentioned abnormalities, may explain bone resistance to PTH. These are important advances in the understanding of renal osteodystrophy as skeletal resistance to PTH appears to play an important part in the pathophysiology of secondary hyperparathyroidism and of adynamic bone disease. Because of this skeletal resistance, it has been recommended for several years that serum PTH level be monitored and kept twofold to threefold above the upper value of the normal level to maintain normal bone turnover in dialysis patients. Relative hypoparathyroidism has recently been found to be associated with increased spontaneous fracture rate and mortality, so this recommendation appears to hold adequate, despite the demonstration that serum PTH levels in this range are a poor predictor of bone turnover and that chronic parathyroid gland hyperplasia is likely to favor parathyroid gland autonomization. Recent publications have insisted on the role that hyperphosphatemia plays not only in the development of secondary hyperparathyroidism, but also of vascular, especially coronary, calcification and as a predictor of mortality. This "silent killer" of uremic patients is one of the main targets for therapeutic intervention. Extensive use of calcium-containing phosphate binders has been recently criticized as calcium overload appears to favor vascular calcification. Sevelaner (RenaGel) is a calcium- and aluminum-free phosphate binder that is an important advance in the management of renal osteodystrophy, especially in patients with extraskeletal calcification and hypercalcemia. The use of vitamin D derivatives has also raised concern because they enhance calcium and phosphorus absorption and reduce bone turnover. New metabolites with fewer hypercalcemic effects have been developed. Calcium-sensing receptor agonists are stimulating interest and are likely to take an important place in the future management of renal osteodystrophy. Uremic myopathy has received recent attention. Impaired muscle capillary oxygen transfer has been identified as a pathophysiologic factor, and progressive resistance training has been shown to improve the condition. Finally, a new entity, nephrogenic fibrosing dermopathy, has been described, which must be distinguished from calciphylaxis and scleromyxedema.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbfis
                Brazilian Journal of Physical Therapy
                Braz. J. Phys. Ther.
                Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia (São Carlos )
                1809-9246
                April 2010
                : 14
                : 2
                : 91-98
                Affiliations
                [1 ] Centro Universitário da Grande Dourados Brazil
                [2 ] Universidade Estadual de Londrina Brazil
                [3 ] Universidade Federal de Mato Grosso do Sul Brazil
                Article
                S1413-35552010000200002
                d96160c2-d1e0-455c-804c-151001ef27b9

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1413-3555&lng=en
                Categories
                ORTHOPEDICS
                REHABILITATION

                Orthopedics,Physiotherapy
                músculos respiratórios,capacidade funcional,respiratory muscles,functional capacity,dialysis,kidney transplant,hemodiálise,transplante renal,espirometria,spirometry

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