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1.
MHSalud ; 19(2)dic. 2022.
Article in Spanish | LILACS-Express | LILACS, SaludCR | ID: biblio-1405530

ABSTRACT

Resumen Objetivo: Comparar la composición corporal por antropometría clásica e impedancia bioeléctrica en estudiantado universitario de una universidad peruana. Método: Estudio correlacional, transversal, conformado por 152 estudiantes (77 varones y 75 mujeres) matriculados en el ciclo 2018-II con edad promedio de 20.45 ± 3.63 años. Se calculó para el método de antropometría el índice de masa corporal, mediciones antropométricas y se utilizó la ecuación de Yuhasz (1974) para determinar el porcentaje de grasa corporal, y para el de bioimpedancia eléctrica se utilizó el analizador tetrapolar multifrecuencia de medición segmental directa Inbody 120. Para establecer la correlación se utilizó el coeficiente de Pearson y para la concordancia se utilizó el método gráfico de Bland Altman e índice de estabilidad. Los datos fueron analizados con el programa estadístico IBM SPSS Statistics, versión 27.0. Para todos los análisis se utilizó un nivel de significancia (p<0.05). Resultados: Existe una fuerte correlación estadísticamente significativa (p<0.01y r=0.95) entre los métodos de antropometría y bioimpedancia eléctrica para la determinación del porcentaje de grasa corporal; además, una buena concordancia según el método gráfico de Bland Altman, reforzada con el índice de estabilidad para complemento de la interpretación (IE= 95 %). Conclusiones: Ambos métodos son intercambiables entre sí, por lo que pueden ser usados indistintamente en este tipo de población para determinar el porcentaje de grasa corporal expresado en porcentaje.


Abstract Objective: The aim was to compare the body composition using classical anthropometry and bioelectric impedance in university students of a Peruvian university. Method: a correlational, cross-sectional study with a research sample of 152 students (77 men and 75 women) enrolled in the 2018-II period with an average age of 20.45 ± 3.63 years. The body mass index and anthropometric measurements were calculated for the anthropometric method. The Yuhasz (1974) equation was used to determine the body fat percentage. The electrical bioimpedance method implemented the tetrapolar multi-frequency direct segmental measurement analyzer Inbody 120. Pearson coefficient was used to establish the correlation, and the Bland Altman graphical method and stability index were used for concordance. The data were analyzed using the statistical software application IBM SPSS Statistics, version 27.0. A level of significance (p <0.05) was used for all analyzes. Results: there is a strong statistically significant correlation (p<0.01 and r = 0.95) between the anthropometric and electrical bioimpedance methods to determine body fat percentage. In addition, there is a good agreement according to the Bland Altman graphical method, reinforced by the stability index to complement the interpretation (IE = 95%). Conclusions: Both methods are interchangeable with each other, so they can be used indistinctly in this type of population to determine body fat percentage.


Resumo Objetivo: comparar a composição corporal por antropometria clássica e impedância bioelétrica em estudantes universitários de uma universidade peruana. Método: estudo correlacional, transversal, compreendendo 152 estudantes (77 homens e 75 mulheres) matriculados no ciclo 2018-II, com idade média de 20,45 ± 3,63 anos. Para o método antropométrico, o índice de massa corporal, as medidas antropométricas e a equação de Yuhasz (1974) foram calculados para determinar a porcentagem de gordura corporal; e para o método de bioimpedância elétrica foi usado o analisador tetrapolar multifrequencial com medida segmentar direta Inbody 120. O coeficiente de Pearson foi usado para estabelecer a correlação; o método gráfico Bland Altman e o índice de estabilidade foram usados para a concordância. Os dados foram analisados com o IBM SPSS Statistics, versão 27.0. Um nível de significância (p<0,05) foi usado para todas as análises. Resultados: há uma forte correlação estatística significativa (p<0,01 e r=0,95) entre os métodos de antropometria e bioimpedância elétrica para a determinação da porcentagem de gordura corporal; além disso, uma boa concordância de acordo com o método gráfico Bland Altman, reforçado com o índice de estabilidade para complementar a interpretação (IE= 95%). Conclusões: Ambos os métodos são intercambiáveis entre si, portanto, podem ser utilizados indistintamente nesse tipo de população para determinar a porcentagem de gordura corporal expressa como porcentagem.


Subject(s)
Humans , Male , Female , Adult , Anthropometry/instrumentation , Adipose Tissue , Electric Impedance/therapeutic use
2.
Int. j. morphol ; 40(3): 711-719, jun. 2022. ilus, tab
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1385646

ABSTRACT

RESUMEN: La práctica regular de ejercicio físico es una de las estrategias que se utiliza para optimizar la composición corporal. Para esto, no siempre se considera una intervención nutricional como parte de un trabajo interdisciplinario. El objetivo de este estudio fue identificar los efectos de un programa de intervención nutricional asociada a un entrenamiento concurrente en la composición corporal evaluada a través de bioimpedancia eléctrica (BIA) en hombres físicamente activos. La intervención tuvo una duración de 6 meses, donde participaron 12 personas (23,4 ± 4,9 años). Durante los primeros 5 meses se aplicó una planificación alimentaria y de entrenamiento ajustado a las características individuales de cada uno de los participantes, al comienzo del 6º mes, fue eliminada la planificación alimentaria y sólo se mantuvo el entrenamiento, esto con el objetivo de analizar los posibles cambios de composición corporal de los participantes. Antes (previo al programa de intervención), durante (al final del mes 5) y posterior a la intervención (final del mes 6) se evaluó el tejido adiposo, muscular y la masa libre de grasa a través de bioimpedancia eléctrica (BIA). Los resultados muestran que el programa de entrenamiento con intervención nutricional generaron en los primeros 5 meses, una disminución del porcentaje de tejido adiposo (PRE= 16,20 ± 4,75; POST= 9,52 ± 3,70; p= 0,000; TE= 1,51) e índice de tejido adiposo (PRE= 5,34 ± 1,75; POST= 3,16 ± 1,34; p=0,001; TE=1,35), aumento del porcentaje de tejido muscular (PRE= 46,05 ± 3,02; POST= 49,90 ± 2,90; p=0,004; TE= -1,25) y aumento el índice muscular/adiposo (PRE= 2,53 ± 0,75; POST= 4,85 ± 2,64; p=0,005; TE= -1,15), efectos que se atenúan significativamente cuando la intervención nutricional fue retirada del programa de intervención (p>0.05). Se concluye que la intervención nutricional es un factor clave para generar efectos positivos en la optimización de la composición corporal independientemente del nivel de entrenamiento de las personas. Estos resultados evidencian la importancia de la realización de una planificación alimentaria individualizada, ejecutada por un profesional nutricionista en los cambios de la composición corporal en sujetos físicamente activos. Los resultados de este estudio podrían orientar la consideración de un profesional nutricionista a la hora de formar equipos transdisciplinarios con el fin de mejorar hábitos de alimentación y de composición corporal.


SUMMARY: The regular practice of a certain type of training is one of the strategies used to optimize body composition. Consequently, nutritional intervention is not always considered as part of interdisciplinary work. This study aimed to identify the effects of a nutritional intervention program associated with concurrent training on body composition, assessed through bioelectrical impedance (BIA) in physically active men. The intervention lasted 6 months, with the participation of 12 subjects (23.4 ± 4.9 years). During the first 5 months, food and training planning was applied, adjusted to the individual characteristics of each of the participants. At the beginning of the 6th month, food planning was eliminated and only training was maintained, to analyze the possible changes in body composition of the participants. Prior to (before the intervention program), during (at the end of month 5), and after the intervention (end of month 6), adipose tissue, muscle, and fat-free mass were evaluated through electrical bioimpedance (BIA). The results showed that in the first five months, this training program generated a decrease in the percentage of adipose tissue (PRE= 16.20 ± 4.75; POST= 9.52 ± 3.70; p= 0.000; ES= 1.51) and adipose tissue index (PRE= 5.34 ± 1.75; POST= 3.16 ± 1.34; p=0.001; ES=1.35), increase in the percentage of muscle tissue (PRE= 46.05 ± 3.02; POST= 49.90 ± 2.90; p=0.004; ES= -1.25) and increased muscle/fat index (PRE= 2.53 ± 0.75; POST = 4.85 ± 2.64, p=0.005, SE= -1.15). The above effects were significantly reduced when the nutritional intervention was withdrawn from the program (p>0.05). It is concluded that nutritional intervention is a key factor to generate positive effects in the optimization of body composition regardless of the level of training. These results show the importance of individualized food planning, carried out by a professional nutritionist with regard to changes in the body composition of physically active subjects. The results of this study could be useful for nutritionists when forming disciplinary teams to improve eating habits and body composition.


Subject(s)
Humans , Male , Adult , Young Adult , Body Composition , Exercise , Anthropometry , Nutritional Physiological Phenomena , Electric Impedance
3.
Int. j. morphol ; 40(4): 933-938, 2022. tab
Article in English | LILACS-Express | LILACS | ID: biblio-1405238

ABSTRACT

SUMMARY: Bioelectrical impedance analysis (BIA) is useful for determining bioelectrical parameters and body composition. In turn, differences have been reported when comparing these variables in athletes by training status. Nevertheless, there is no evidence of bioelectrical impedance parameters in Street Workout (SW) athletes. Thus, this study aimed to compare bioelectrical parameters and body composition through BIA between trained and untrained SW athletes. Twenty-two male SW athletes were classified as trained (n=6; 26.3 y [21.0-28.9]) and untrained (n=16; 21.8 y [20.5-24.7]) based on their SW experience. A bioelectrical impedanciometer was used to estimate bioelectrical parameters and body composition. There was no difference in body composition between trained and untrained SW athletes. Regarding impedance, trained athletes had lower values in the upper limbs (right arm: p=0.049; left arm: p=0.027) and trunk (p=0.004), while phase angle values were higher in the upper limbs (right arm: p=0.004; left arm: p=0.001), and trunk (p=0.006), as well as the mean phase angle (p=0.007), than untrained athletes. Bioelectrical impedance parameter differences found between SW training level groups suggest an improvement of tissue qualities, such as muscle, with SW practice. Future longitudinal studies should corroborate if SW training modifies these parameters.


RESUMEN: El análisis de impedancia bioeléctrica es útil para determinar parámetros bioeléctricos y de composición corporal. A su vez, se han reportado diferencias al comparar estas variables en atletas según su estado de entrenamiento. Sin embargo, no hay evidencia de parámetros de impedancia bioeléctrica en atletas de Street Workout (SW). Por tanto, este estudio tuvo como objetivo comparar los parámetros bioeléctricos y la composición corporal entre atletas de Street Workout entrenados y no entrenados. Veintidós atletas masculinos de Street Workout fueron clasificados como entrenados (n=6; 26.3 años [21.0-28.9]) y no entrenados (n=16; 21.8 años [20.5-24.7]) en función de su experiencia en Street Workout. Se utilizó un impedanciómetro bioeléctrico para estimar los parámetros bioeléctricos y la composición corporal. No hubo diferencias en la composición corporal entre los atletas de SW en- trenados y no entrenados. En cuanto a la impedancia, los atletas entrenados tenían valores más bajos en los miembros superiores (brazo derecho: p=0,049; brazo izquierdo: p=0,027) y en el tronco (p=0,004), mientras que los valores del ángulo de fase eran más altos en los miembros superiores (brazo derecho: p=0,004; brazo izquierdo: p=0,001), en el tronco (p=0,006), así como la media del ángulo de fase (p=0,007) que los atletas no entrenados. Las diferencias en los parámetros de impedancia bioeléctrica encontradas entre los grupos según el nivel de entrenamiento de SW sugieren una mejora de las cualidades de los tejidos, como el músculo, con la práctica de SW. Futuros estudios longitudinales deberían corroborar si el entrenamiento SW modifica estos parámetros.


Subject(s)
Humans , Male , Adult , Young Adult , Body Composition , Electric Impedance , Athletes , Gymnastics , Anthropometry
4.
Int. j. morphol ; 40(4): 927-932, 2022. tab
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1405236

ABSTRACT

RESUMEN: La Bioimpedancia Eléctrica (BIA), al ser una técnica no invasiva pero de elevada precisión, se ha convertido en la actualidad en una herramienta valiosa para determinar la composición corporal en militares, facilitado el control de las distintas variables que se asocian a cada especialidad. El objetivo del presente estudio fue describir el perfil de composición corporal en militares de elite al momento de finalizar un curso de especialización. Participaron 11 militares con un rango de edad entre 22 y 29 años. Se evalúo la composición corporal a través de BIA, inmediatamente después de finalizado un curso de especialización para militares de élite. Las evaluaciones en los militares sobre las variables de la composición corporal a través de BIA mostraron: peso corporal de 84,3 ± 4,52 kg, talla 1,78 ± 0,06 m, índice de masa corporal (IMC) 26,5 ± 1,09, tejido adiposo de 13,7 ± 3,65 %, tejido muscular 49,5 ± 2,34 %, masa libre de grasa 72,7 ± 5,23 kg y 53,2 ± 3,78 l de agua corporal total. Conclusiones: Los militares de elite presentaron elevados niveles de masa libre de grasa, tejido muscular y bajos niveles de tejido adiposo lo que favorece el desarrollo de las actividades militares especializadas y disminuye el riesgo de lesiones. Los datos aquí recogidos sirven como marco de referencia para futuros estudios.


SUMMARY: Electrical bioimpedance (BIA), being a non- invasive technique but with high precision, has become a valuable tool for determining body composition in the military, facilitating the control of the different variables associated with each specialty. The aim of the present study was to describe the body composition profile of elite military personnel at the end of a specialization course. Eleven military personnel between 22 and 29 years of age participated in the study. Body composition was assessed by BIA immediately after completion of a specialization course for elite military personnel. Assessments in the military on body composition variables through BIA showed: body weight of 84.3 ± 4.52 kg, height 1.78 ± 0.06 m, body mass index (BMI) 26.5 ± 1.09, adipose tissue of 13.7 ± 3.65 %, muscle tissue 49.5 ± 2.34 %, fat free mass 72.7 ± 5.23 kg and 53.2 ± 3.78 l of total body water. Conclusions: Elite military personnel presented high levels of fat free mass, muscle tissue and low levels of adipose tissue which favors the development of specialized military activities and decreases the risk of injury. The data collected here serve as a frame of reference for future studies.


Subject(s)
Humans , Male , Adult , Young Adult , Body Composition , Military Personnel , Body Mass Index , Chile , Adipose Tissue , Electric Impedance , Organism Hydration Status
5.
Rev. Nutr. (Online) ; 35: e200243, 2022. tab, graf
Article in English | LILACS | ID: biblio-1360808

ABSTRACT

ABSTRACT Objective We investigated the utility of the phase angle as a screening tool for sarcopenia. Methods We performed a cross-sectional study that included 169 active community-dwelling elderly women. The phase angle was determined using tetrapolar bioelectrical impedance, and sarcopenia was diagnosed based on skeletal muscle mass, muscle strength, and physical performance using bioelectrical impedance analysis, a handheld dynamometer, and the gait speed test, respectively. Receiver operating characteristic curve analysis was performed to investigate the role of the phase angle as a predictor of sarcopenia. Results The prevalence of sarcopenia was 12.4%. The median phase angle was 5.30°; elderly women with sarcopenia had lower phase angles than those without sarcopenia (p=0.006). The phase angle cutoff for the detection of sarcopenia was ≤5.15°, with an area under the curve of 0.685, sensitivity 81.0%, specificity 60.8%, and accuracy 63.31%. Elderly women with a low phase angle show a high risk of presenting with reduced muscle mass. Conclusions The phase angle was shown to be a useful screening tool in elderly women with sarcopenia.


RESUMO Objetivo Avaliar o ângulo de fase como método de triagem para sarcopenia. Métodos Estudo transversal realizado com 169 idosas ativas de comunidade. O ângulo de fase foi obtido por bioimpedância elétrica tetrapolar e a sarcopenia foi diagnosticada a partir da massa muscular esquelética, força muscular e performance física utilizando bioimpedância elétrica, dinamometria manual e o teste de velocidade de marcha, respectivamente. A curva Receiver Operating Characteristic foi construída para avaliar o ângulo de fase como preditor de sarcopenia. Resultados A prevalência de sarcopenia foi de 12,4%. A mediana do ângulo de fase foi de 5,30°; idosas com sarcopenia apresentaram valores menores do ângulo de fase em relação às não sarcopênicas (p=0,024). O ponto de corte do ângulo de fase para identificar sarcopenia foi ≤5,15°, com área sob a curva de 0,685, sensibilidade de 81,0%, especificidade de 60,8% e acurácia de 63,31%. Observou-se que idosas com ângulo de fase reduzido apresentaram maior chance de terem massa muscular reduzida e sarcopenia. Conclusão O ângulo de fase se mostrou útil para triagem de idosas com sarcopenia.


Subject(s)
Humans , Female , Aged , Aged , Electric Impedance , Sarcopenia/diagnosis
6.
Chinese Journal of Cardiology ; (12): 150-153, 2022.
Article in Chinese | WPRIM | ID: wpr-935119

ABSTRACT

Objective: To explore the predictive value of the impedance measured during leadless pacemaker Micra implantation on the trend of changes of pacing threshold post implantation. Methods: This is a retrospective cross-sectional study. Patients who received implantation of leadless pacemaker Micra at the Second Xiangya Hospital of Central South University from December 2019 to August 2020 were enrolled. The clinical data and the intraoperative electrical parameters during leadless pacemaker implantation were collected. The impedance and pacing threshold data were analyzed at three time points: immediate release, 5-10 min after release, and after traction test. Receiver operating characteristic (ROC) curves and the area under the curve (AUC) were used to analyze the value of the impedance at immediate release on predicting the trend of changes of pacing threshold post implantation. Results: A total of 21 patients (mean age: (72.2±12.5) years, 12 males) were included. The impedance of 21 patients was (798.1±35.3) Ω immediately after implantation, (800.9±35.6) Ω after 5-10 minutes of release, and (883.6±31.7) Ω after traction test. Impedance was similar between the three time points (P>0.05). The threshold was (0.97±0.11) V/0.24 ms immediately after implantation, (0.95±0.12) V/0.24 ms at 5-10 min after the release, and (0.59±0.06) V/0.24 ms after the traction test. The threshold was significantly lower after the traction test than that immediately after release (P=0.003) and than that at 5-10 minutes after release (P=0.008), suggesting a decreased tendency of the threshold over time. According to the analysis of the ROC curve, the immediate impedance after the release ≥680 Ω could predict the ideal pacing threshold after the traction test (AUC=0.989, 95%CI 0.702-0.964, P<0.001), the prediction sensitivity was 87%, and the specificity was 100%. The pacing threshold would be not ideal with the immediate impedance ≤ 520 Ω (95%CI 0.893-1.000, P<0.001), the sensitivity was 100%, and the specificity was 80%. Conclusions: The impedance immediately after the release has predictive value for the changing trend of threshold post leadless pacemaker Micra implantation. Impedance ≥680 Ω immediately after release is often related with ideal pacing threshold after the traction test. In contrast, the impedance ≤ 520 Ω pacing is often related with unsatisfactory threshold after the traction test, therefore, it is recommended to find a new pacing site to achieve the impedance ≥680 Ω immediately after release during leadless pacemaker Micra implantation.


Subject(s)
Aged , Aged, 80 and over , Cardiac Pacing, Artificial , Cross-Sectional Studies , Electric Impedance , Humans , Male , Middle Aged , Pacemaker, Artificial , Retrospective Studies , Treatment Outcome
7.
Article in Chinese | WPRIM | ID: wpr-928896

ABSTRACT

The unipolar/bipolar pacing mode of pacemaker is related to its circuit impedance, which affects the battery life. In this study, the in vitro experiment scheme of pacemaker circuit impedance test was constructed. The human blood environment was simulated by NaCl solution, and the experimental environment temperature was controlled by water bath. The results of in vitro experiments showed that under the experimental conditions similar to clinical human parameters, the difference between the circuit impedance of bipolar mode and unipolar mode is 120~200 Ω. The results of the in vitro experiment confirmed that the circuit impedance of bipolar circuit was larger than that of unipolar mode, which was found in clinical practice. The results of this study have reference value to the optimization of pacing mode and the reduction of pacemaker power consumption.


Subject(s)
Cardiac Pacing, Artificial/methods , Electric Impedance , Humans , Pacemaker, Artificial , Prostheses and Implants
8.
Rev. Assoc. Med. Bras. (1992) ; 67(8): 1161-1166, Aug. 2021. tab, graf
Article in English | LILACS | ID: biblio-1346990

ABSTRACT

SUMMARY OBJECTIVE The aim was to evaluate the prevalence of oropharyngeal dysphagia (OD) and its association with body composition by bioelectrical impedance analysis (BIA) and functionality among institutionalized older adults. METHODS A cross-sectional study was conducted. The swallowing function and diagnosis of OD were evaluated with a volume-viscosity swallow test. Activities of daily living were evaluated by the Barthel Index. Body composition was evaluated by BIA, and phase angle (PhA) was determined. RESULTS Eighty institutionalized older adults were evaluated. The mean age of the study population was 82±9.5 years, and 65% were females. The OD prevalence was 30%, dependence was 30%, and sarcopenia was 16%. In the multivariate analysis, a low PhA (<3.5°) was independently associated with the presence of OD adjusted by sex and age (OR: 2.60, 95%CI 2.41-2.90, p=0.01). CONCLUSIONS A higher prevalence of OD was found. Significant and independent associations were found between low PhA, dependence, and sarcopenia with the presence of OD among institutionalized older persons.


Subject(s)
Humans , Female , Aged , Aged, 80 and over , Deglutition Disorders/diagnosis , Deglutition Disorders/epidemiology , Sarcopenia/diagnosis , Sarcopenia/epidemiology , Body Composition , Activities of Daily Living , Cross-Sectional Studies , Electric Impedance
9.
J. bras. nefrol ; 43(2): 269-273, Apr.-June 2021. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1286943

ABSTRACT

Abstract Introduction: Body composition is critical for the evaluation of patients with Chronic Kidney Disease (CKD) and can be obtained from either multifrequency bioelectrical impedance analysis (BIA) or dual-energy absorptiometry (DXA). Although the discrepancy between the results obtained from both methods has already been described, reasons are unknown, and might be related to secondary hyperparathyroidism, which is associated with bone loss. Methods: We have evaluated 49 patients (25 males and 24 females): 20 with CKD not on dialysis and 29 on maintenance hemodialysis [18 with severe hyperparathyroidism (HD-SHPT) and 11 submitted to parathyroidectomy (HD-PTX)]. All patients underwent DXA and BIA. Results: The median age and body mass index (BMI) were 49 years and 25.6 kg/m2, respectively. Patients exhibited low bone mineral content (BMC) measured by DXA, particularly those from the HD-SHPT group. The largest BMC measurement disagreement between DXA and BIA was found in the HD-SHPT group (p=0.004). Factors independently associated with this discrepancy in BMC measurement were serum phosphate (p=0.003) and patient group (p=0.027), even after adjustments for age, BMI, and gender (adjusted r2=0.186). PTX attenuated this difference. Discussion: BIA should be interpreted with caution in patients with SHPT due to a loss of accuracy, which can compromise the interpretation of body composition.


Resumo Introdução: A composição corporal é fundamental para a avaliação de pacientes com Doença Renal Crônica (DRC), e pode ser obtida por análise de impedância bioelétrica por multifrequência (BIA) ou absorciometria de dupla energia (DXA). Embora a discrepância entre os resultados obtidos pelos dois métodos já tenha sido descrita, os motivos são desconhecidos e podem estar relacionados ao hiperparatireoidismo secundário, devido à perda óssea. Métodos: Avaliamos 49 pacientes (25 homens e 24 mulheres): 20 com DRC não em diálise e 29 em hemodiálise de manutenção [18 com hiperparatireoidismo grave (HD-SHPT) e 11 submetidos à paratireoidectomia (HD-PTX)]. Todos os pacientes foram submetidos à DXA e BIA. Resultados: A mediana da idade e do índice de massa corporal (IMC) foram de 49 anos e 25,6 kg/m2, respectivamente. Os pacientes exibiram baixo conteúdo mineral ósseo (CMO) medido pelo DXA, particularmente aqueles do grupo HD-SHPT. A maior discordância da medida do CMO entre DXA e BIA foi encontrada no grupo HD-SHPT (p = 0,004). Os fatores independentemente associados a essa discrepância na medida do CMO foram fosfato sérico (p = 0,003) e grupo de pacientes (p = 0,027), mesmo após ajustes para idade, IMC e sexo (r2 ajustado = 0,186). PTX atenuou essa diferença. Discussão: A BIA deve ser interpretada com cautela em pacientes com HPTS devido a uma perda de precisão, o que pode comprometer a interpretação da composição corporal.


Subject(s)
Humans , Male , Female , Bone Density , Hyperparathyroidism, Secondary , Absorptiometry, Photon , Body Mass Index , Renal Dialysis , Electric Impedance
10.
Online braz. j. nurs. (Online) ; 20: e20216481, 05 maio 2021. ilus
Article in English, Spanish, Portuguese | LILACS, BDENF | ID: biblio-1255197

ABSTRACT

OBJETIVO: Avaliar a efetividade do ângulo de fase medido por bioimpedância elétrica como preditor para avaliação de cicatrização em pacientes com lesões cutâneas ou risco de desenvolvê-las. MÉTODO: Revisão sistemática operacionalizada segundo metodologia Joanna Briggs Institute, recomendações checklist PRISMA. A amostra contemplou pacientes acima de 18 anos com lesões cutâneas variadas. RESULTADOS: Quatro estudos demonstraram o uso do ângulo de fase para o desfecho cicatrização e um estudo apontou uma possível relação do ângulo de fase com previsão de surgimento e risco de lesão por pressão. Foram obtidos pontos de cortes para determinadas lesões. Por não ter sido possível metanálise, se propõe a realização de estudos primários sobre o tema deste estudo. CONCLUSÃO: Apesar de serem poucos os trabalhos científicos com o tema proposto, foi possível demonstrar evidência moderada para o desfecho "cicatrização" e baixa para o desfecho "risco de lesão". Registro no PROSPERO com número CRD420201549.


OBJECTIVE: To assess the effectiveness of the phase angle measured by electrical bioimpedance as a predictor for healing evaluation in patients with skin lesions or risk of developing them. METHOD: A systematic review operationalized according to Joanna Briggs Institute methodology, PRISMA checklist recommendations. The sample included patients over 18 years old with varied skin lesions. RESULTS: Four studies demonstrated the use of phase angle for the healing outcome and one study indicated a possible relationship between phase angle and the prediction of the onset and risk of pressure ulcer. Cut-off points were obtained for certain lesions. As it was not possible to perform a meta-analysis, it is proposed to conduct primary studies on the theme of this study. CONCLUSION: Although there are few scientific papers with the theme proposed, it was possible to demonstrate moderate evidence for the "healing" outcome and low evidence for the "risk of lesion" outcome. Registration in PROSPERO with number CRD420201549.


OBJETIVO: Evaluar la efectividad del ángulo de fase medido por bioimpedancia eléctrica como predictor para la evaluación de la cicatrización en pacientes con lesiones cutáneas o riesgo de desarrollarlas. MÉTODO: Revisión sistemática realizada según la metodología del Joanna Briggs Institute, recomendaciones checklist PRISMA. La muestra incluyó a pacientes mayores de 18 años con diferentes lesiones cutáneas. RESULTADOS: Cuatro estudios demostraron el uso del ángulo de fase para el resultado cicatrización y un estudio señaló una posible relación entre el ángulo de fase y la previsión de la aparición y el riesgo de lesión por presión. Se obtuvieron puntos de corte para ciertas lesiones. Como no fue posible realizar un metaanálisis, se propone realizar estudios primarios sobre el tema de este estudio. CONCLUSIÓN: Aunque hay pocos estudios científicos sobre el tema propuesto, fue posible demostrar evidencia moderada para el resultado "cicatrización" y baja para el resultado "riesgo de lesión". Inscripción en PROSPERO con número CRD420201549.


Subject(s)
Humans , Wound Healing , Electric Impedance , Pressure Ulcer , Predictive Value of Tests , Risk Assessment
11.
Arq. bras. cardiol ; 116(4): 715-724, abr. 2021. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1285214

ABSTRACT

Resumo Fundamento: O agravamento da função renal (AFR) é frequentemente observado na terapia agressiva com diuréticos para o tratamento de insuficiência cardíaca aguda descompensada (ICAD) e está associado com piores desfechos em alguns estudos. Objetivo: Avaliar a relação de AFR e congestão na alta hospitalar com ocorrência de eventos (morte cardíaca ou internação por insuficiência cardíaca). Métodos: Oitenta pacientes com ICAD foram estudados. O AFR foi definido por um aumento absoluto (≥0,5 mg/dL) nos níveis séricos de creatinina a partir dos valores obtidos na admissão. Concentrações de peptídeo natriurético do tipo B (BNP) e lipocalina associada à gelatinase neutrofílica (NGAL) foram medidas na admissão e na alta hospitalar. Congestão foi avaliada na alta utilizando a análise vetorial de bioimpedância elétrica (BIVA). O desfecho primário foi o tempo para o primeiro evento, definido como uma combinação de morte cardíaca ou hospitalização por insuficiência cardíaca. Análise de curva Característica de Operação do Receptor (curva ROC) foi realizada para determinar o ponto de corte de IH mais adequado para predição de eventos. Curvas Kaplan-Meier de sobrevida livre de eventos foram construídas e comparadas usando o teste de log-rank. Modelos de riscos proporcionais de Cox foram usados para investigar a associação com eventos. O critério para se estabelecer significância estatística foi um p<0.05. Resultados: A idade média foi 60,6 ± 15,0 anos, e 48 (60%) pacientes eram do sexo masculino. A fração de ejeção média foi 35,3±7,8%. O AFR ocorreu em 37,5% da amostra. A creatinina basal associou-se com AFR (p<0,001), mas nem BNP (p=0,35) nem NGAL (p=0,18) na admissão foram preditores de AFR. Usando modelos de riscos proporcionais de Cox, o índice de hidratação na alta, estimado por BIVA, associou-se significativamente com ocorrência de eventos (HR 1,39; IC95% 1,25-1,54, p<0,0001), mas não com AFR (HR 2,14; IC95% 0,62-7,35, p=0,22). Conclusão: A congestão persistente na alta associou-se com piores desfechos. O AFR parece estar relacionado com alterações hemodinâmicas durante o processo de descongestionamento, mas não com lesões renais.


Abstract Background: Worsening renal function (WRF) is frequently observed in the setting of aggressive diuresis for the treatment of acute decompensated heart failure (ADHF) and is associated with poor outcomes in some studies. Objective: We sought to assess the relationship of WRF and congestion at discharge with events (cardiac death or heart failure hospitalization). Methods: Eighty patients with ADHF were studied. WRF was defined by an absolute increase in serum creatinine of ≥0.5 mg/dL from the values measured at the time of admission. B-type natriuretic peptide (BNP) and plasma neutrophil gelatinase-associated lipocalin (NGAL) were measured at admission and at discharge. Congestive state at discharge was assessed using bioelectrical impedance vector analysis (BIVA). Primary endpoint was time to first event defined as a combination of cardiac death or heart failure hospitalization. Receiver operating characteristic (ROC) curve analysis was used to determine the best hydration index cutoff to predict events. Kaplan-Meier event-free survival curves were constructed and compared using the log-rank test. Cox proportional hazards models were used to investigate the association with events. The criterion for determining statistical significance was p<0.05. Results: Mean age was 60.6±15 years, and 48 (60%) were male. Mean ejection fraction was 35.3±7.8%. WRF occurred in 37.5% of the sample. Baseline creatinine was associated with WRF (p<0.001), but neither admission BNP (p=0.35) nor admission NGAL (p=0.18) was predictor of WRF. Using Cox proportional hazard models, hydration index at discharge calculated with BIVA was significantly associated with events (HR 1.39, 95% CI 1.25-1.54, p<0.0001) but not WRF (HR 2.14, 95% CI 0.62-7.35, p=0.22). Conclusion: Persistent congestion at discharge was associated with worse outcomes. WRF seems to be related to hemodynamic changes during the decongestion process but not to kidney tubular injuries.


Subject(s)
Humans , Male , Female , Aged , Heart Failure , Prognosis , Biomarkers , Acute Disease , Electric Impedance , Creatinine , Lipocalin-2 , Middle Aged
13.
Rev. colomb. gastroenterol ; 36(1): 73-80, ene.-mar. 2021. graf
Article in Spanish | LILACS | ID: biblio-1251524

ABSTRACT

Resumen La enfermedad por reflujo gastroesofágico (ERGE) se define como el tránsito anormal del contenido gástrico hacia el esófago, que se da por una alteración de la barrera antirreflujo, causando síntomas o complicaciones. Para su correcto diagnóstico y abordaje terapéutico, se requiere de la integración de hallazgos clínicos, endoscópicos y monitorización del pH esofágico en 24 horas con o sin impedanciometría, la cual debe ser realizada con especificaciones técnicas, y su interpretación debe basarse en la mejor evidencia clínica disponible, con el objetivo de tener diagnósticos precisos que permitan tomar las mejores decisiones con los pacientes. Recientemente, en el Consenso de Lyon se han incorporado nuevas directrices para el diagnóstico de ERGE por monitorización de pH esofágico, las cuales se revisan en este artículo.


Abstract Gastroesophageal reflux disease (GERD) is defined as the abnormal transit of gastric contents into the esophagus. It is caused by an alteration of the anti-reflux barrier, causing multiple symptoms or complications. In order to achieve accurate diagnosis and proper therapeutic approach, integration of clinical findings, endoscopic findings and 24-hour esophageal pH monitoring, with or without impedancometry, is required. These tests must be performed following technical specifications and their interpretation must be based on the best clinical evidence available to obtain accurate diagnoses that allow making the best decisions to the benefit of patients. Recently, the Lyon Consensus incorporated new guidelines for the diagnosis of GERD by esophageal pH monitoring, which are reviewed in this paper.


Subject(s)
Humans , Male , Female , Therapeutics , Gastroesophageal Reflux , Electric Impedance , Esophageal pH Monitoring , Disease
14.
Article in English, Portuguese | LILACS | ID: biblio-1359804

ABSTRACT

Introdução: O câncer é caracterizado pela multiplicação desordenada de células de um dado tecido, com potencial para invadir outros órgãos e tecidos. O conhecimento da extensão anatômica do câncer e sua capacidade de infiltração são importantes para nortear terapias e prognóstico, e a evolução dessa doença tem forte impacto negativo no estado nutricional do paciente. O ângulo de fase (AF) se apresenta como ótima ferramenta prognóstica para esse grupo. Objetivo: Associar o ângulo de fase padronizado (AFP) com o estadiamento clínico em indivíduos com câncer. Método: Estudo observacional e transversal, realizado com adultos e idosos com câncer não hospitalizados. As informações clínicas e o estadiamento clínico (TNM) do câncer foram obtidos por meio de prontuário eletrônico. Foi realizada a Avaliação Subjetiva Global Produzia pelo Próprio Paciente (ASG-PPP), e calculados o AF, mediante os valores obtidos pela bioimpedância e, em seguida, o AFP. Resultados: Participaram da pesquisa 25 voluntários com média de idade de 58,3 anos (±13,7), sendo 54,8% do sexo feminino e 54,8% idosos. O tipo de câncer mais frequente foi o de estômago (36%); 44% dos participantes tinham estádios clínicos II e 56%, III ou IV. Segundo a ASG-PPP, 74% dos voluntários apresentavam algum grau de comprometimento nutricional (escores B ou C), e foi detectada associação positiva entre o AFP e o estadiamento tumoral (p>0,0414). Conclusão: O AFP se relacionou positivamente com o estadiamento clínico em indivíduos com câncer


Introduction: Cancer is characterized by the abnormal growth of cells in a tissue, with the potential to invade another organs and tissues. The knowledge of the anatomical extent of cancer and its infiltration capacity are important to guide therapies and prognosis, and the evolution of this disease has severe negative impact on the patient's nutritional status. Phase angle (PA) is an excellent prognostic tool for this group. Objective: To associate the standardized phase angle (SPA) with clinical staging in cancer patients. Method: Observational and cross-sectional study with adults and older adults with cancer non-hospitalized. Clinical information and clinical staging (TNM) of cancer were obtained from electronic charts. PatientGenerated Subjective Global Assessment (PG-SGA) was performed, and the PA was calculated using values collected by bioimpedance and then the standardized PA (SPA). Results: 25 volunteers participated, with mean age of 58.3 years (±13.7), 54.8% females and 54.8% older adults. The most frequent tumor site was in the stomach (36%), 44% of the participants were in clinical stages II and 56%, III or IV. According to the PG-SGA, 74% of the volunteers had some degree of nutritional impairment (score B or C), and a positive association was detected between SPA and tumor staging (p>0.0414). Conclusion: SPA was positively related to clinical staging in individuals with cancer


Introducción: El cáncer se caracteriza por la multiplicación desordenada de células en un tejido, con potencial para invadir otros órganos y tejidos. El conocimiento de la extensión anatómica del cáncer y su capacidad de infiltración son importantes para orientar las terapias y el pronóstico, y la evolución de esta enfermedad tiene un fuerte impacto negativo en el estado nutricional del paciente. Y el ángulo de fase (AF) es una excelente herramienta de pronóstico para este grupo. Objetivo: Asociar el ángulo de fase estandarizado con la estadificación en individuos con cáncer. Método: Estudio observacional y transversal, realizado con adultos y ancianos con cáncer no hospitalizados. La información clínica y la estadificación clínica (TNM) del cáncer se obtuvieron a través de registros médicos electrónicos, y se realizó la Valoración Global Subjetiva Generada por el Paciente (VGSGP) y se calculó el AF y AF estandarizado utilizando los valores obtenidos por bioimpedancia y luego el AF estandarizada. Resultados: Participaron 25 voluntarios, con una edad promedio de 58,3 años (±13,7), 54,8% mujeres y 54,8% eran ancianos. El tipo de cáncer más frecuente fue el de estómago (36%), y el 44% de los participantes tenía estadios clínicos II y 56% III o IV. Según la VG-SGP 74% de los voluntarios presentaban algún grado de deterioro nutricional (puntuaciones B o C) y se detectó una asociación positiva entre el AF estandarizado y estadificación tumoral (p>0,0414). Conclusión: El AF estandarizada se relacionó positivamente con la estadificación en personas con cáncer


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Nutrition Assessment , Nutritional Status , Electric Impedance , Neoplasm Staging , Neoplasms
15.
J. Health Biol. Sci. (Online) ; 9(1): 1-5, 2021. tab
Article in Portuguese | LILACS | ID: biblio-1352408

ABSTRACT

Objetivo: verificar se o ângulo de fase, obtido por bioimpedância elétrica, pode ser utilizado como indicador prognóstico em doenças infecciosas e em quais dessas doenças seu uso está adequadamente embasado pela literatura científica. Métodos: revisão integrativa realizada por meio das bases de dados, como google acadêmico, na BVS Brasil, nas bases SciELO, LILACS e Pubmed, utilizando o termo para busca (bioimpedância e doenças infectocontagiosas e bioimpedância) AND (bioimpedance and infectious diseases OR bioimpedance). A seleção dos estudos foi feita, considerando artigos originais completos disponíveis on-line, em inglês, espanhol e português, publicados entre 2007 e 2021. Resultados: todos os estudos considerados (793) foram realizados em adultos com doença infecciosa. Destes 28 (3,5%) foram separados para leitura aprofundada sobre o perfil metodológico, e apenas quatro (0,50%) do total de artigos consideraram o ângulo de fase como índice prognóstico para doenças infeciosas, ambos em pacientes HIV + hospitalizados. Conclusão: A bioimpedância vem sendo considerada como instrumento de avaliação de estado nutricional em pacientes com doenças infecciosas. Mas o uso do ângulo de fase vem sendo pouco estudado como índice prognóstico para essa população, não podendo ser considerado adequadamente embasado para uso clínico na população com doença infecciosa, o que suscita maior atenção a esta população e a necessidade de maior investigação científica.


Objective: to verify if the phase angle obtained by electrical bioimpedance can be used as a prognostic indicator in infectious diseases and in which infectious diseases its use is adequately supported by scientific literature. Methods: integrative review conducted using databases such as Google Scholar, BVS Brazil, SciELO, LILACS and Pubmed, using the search term (bioimpedance and infectious diseases and bioimpedance) AND (bioimpedance and infectious diseases OR bioimpedance). The selection of studies was made considering complete original articles available online, in English, Spanish and Portuguese, published between 2007 and 2021. Results: all studies considered (793) were carried out in adults with infectious disease. Of these, 28 (3.5%) were separated for in-depth reading on the methodological profile, and only four (0.50%) of the total articles considered the phase angle as a prognostic index for infectious diseases, both in hospitalized HIV + patients. Conclusion: Bioimpedance has been considered as an instrument to assess nutritional status in patients with infectious diseases. However, the use of the phase angle has been little studied as a prognostic index for this population, and cannot be considered adequately substantiated for clinical use in the population with infectious disease, which raises more attention to this population and the need for further scientific investigation.


Subject(s)
Electric Impedance , Prognosis , Nutritional Status , Communicable Diseases
17.
Rev. bras. cancerol ; 67(2): e-131234, 2021.
Article in Portuguese | LILACS | ID: biblio-1223566

ABSTRACT

Introdução: O câncer infantil gera um grande impacto para a saúde pública. A avaliação da composição corporal pela impedância bioelétrica fornece os valores de ângulo de fase, diretamente relacionados a alterações funcionais na membrana celular e que têm sido usados para avaliar o estado nutricional e o prognóstico. Objetivo: Avaliar a correlação entre o ângulo de fase e os parâmetros do estado nutricional de pacientes oncológicos pediátricos em tratamento. Método: Estudo transversal realizado em um hospital público universitário. O estado nutricional foi verificado por meio das medidas de peso, altura, circunferência do braço, dobra cutânea tricipital, índice de massa corporal e circunferência muscular do braço. O ângulo de fase foi determinado pela impedância bioelétrica. Resultados: Foram incluídos 13 pacientes com média de idade de 103,2±39,7 meses, sendo 61,5% do sexo masculino, com prevalência da leucemia entre os diagnósticos. Constatou-se que a maioria (53,8%) dos pacientes estava em eutrofia. Houve forte correlação do ângulo de fase com os parâmetros de massa magra (r=0,923; p=0,000), massa corporal celular (r=0,911; p=0,000), massa extracelular (r=0,897; p=0,000) e peso corporal (r=0,920; p=0,000). Conclusão: Observaram-se correlações expressivas entre o ângulo de fase e os indicadores antropométricos, reforçando a hipótese de que o ângulo de fase pode antecipar a identificação de alterações na composição corporal, possibilitando uma intervenção nutricional precoce e melhor prognóstico.


Introduction: Child cancer has a major impact on public health. The evaluation of body composition by bioelectric impedance provides the values of phase angle, causally related to functional changes in the cell membrane which have been used to evaluate nutritional status and prognosis. Objective: To evaluate the correlation between phase angle and parameters of the nutritional status of pediatric oncologic patients under treatment. Method: Cross-sectional study performed in a public university hospital. The nutritional status was evaluated by weight, height, arm circumference, triceps skin fold, body mass index and arm muscle circumference. The phase angle was determined by bioelectric impedance. Results: 13 patients were included with a mean age of 103.2±39.7 months, 61.5% males with prevalence of leukemia in the diagnoses. It was found that most (53.8%) of the patients were eutrophic. There was a strong correlation of the phase angle with the parameters of lean mass (r=0.923; p=0.000), cellular body mass (r=0.911; p=0.000), extracellular mass (r=0.897; p=0.000) and body weight (r=0.920; p=0.000). Conclusion: Expressive associations between phase angle and other anthropometric indicators were observed, reinforcing the hypothesis that it can anticipate the identification of changes in body composition, allowing early nutritional intervention and better prognosis.


Introducción: El cáncer infantil tiene un gran impacto en la salud pública. La evaluación de la composición corporal por impedancia bioeléctrica proporciona los valores del ángulo de fase, directamente relacionados con los cambios funcionales de la membrana celular y que se han utilizado para evaluar el estado nutricional y el pronóstico. Objetivo: Evaluar la correlación entre el ángulo de fase y los parámetros del estado nutricional de los pacientes oncológicos pediátricos en tratamiento. Método: Estudio transversal realizado en un hospital universitario público. El estado nutricional se evaluó por peso, altura, circunferencia del brazo, pliegue de la piel del tríceps, índice de masa corporal y circunferencia muscular del brazo. El ángulo de fase fue determinado por la impedancia bioeléctrica. Resultados: Se incluyeron 13 pacientes con una edad media de 103,2±39,7 meses, de los cuales el 61,5% eran hombres con prevalencia de leucemia entre los diagnósticos. Se descubrió que la mayoría (53,8%) de los pacientes eran eutróficos. Hubo una fuerte correlación del ángulo de fase con los parámetros de masa magra (r=0,923; p=0,000), masa corporal celular (r=0,911; p=0,000), masa extracelular (r=0,897; p=0,000) y peso corporal (r=0,920; p=0,000). Conclusión: Se observaron asociaciones expresivas entre el ángulo de fase y otros indicadores antropométricos, lo que refuerza la hipótesis de que puede anticiparse a la identificación de cambios en la composición corporal, lo que permite una intervención nutricional temprana y un mejor pronóstico.


Subject(s)
Humans , Male , Female , Child , Nutritional Status , Electric Impedance/therapeutic use , Neoplasms/drug therapy , Body Composition
18.
Article in English | WPRIM | ID: wpr-922190

ABSTRACT

BACKGROUND@#The number of adults aged over 65 years is rapidly increasing in several Southeast Asian countries. Muscle mass decreases with age, leading to sarcopenia. The primary objective of this study was to determine whether differences exist in the body composition and physical strength, according to ethnicity, among community-dwelling Japanese and Thai older adults living in Chiang Mai Province, Thailand.@*METHODS@#A survey was conducted in February and March 2019. Japanese and Thai adults aged ≥ 60 years living in Chiang Mai Province were recruited through community clubs. Participants completed a self-administered questionnaire that enabled collection of data on age, sex, educational background, marital status, annual income, current medical conditions, smoking and alcohol consumption, and exercise habits. Measurements were collected on height, weight, body composition, blood pressure, hand grip, and walking speed for 6 m. Body composition was measured using a standing-posture 8-electrode multifrequency bioimpedance analysis analyzer. Hand grip of each hand was measured with the patient in the standing position using a digital grip dynamometer. Multivariable logistic regression was used to determine factors associated with skeletal muscle mass index (SMI).@*RESULTS@#Of the total 119 participants, 47 were Japanese (26 men, 21 women) and 72 were Thai (16 men, 56 women). The prevalence of a low SMI was 3/26 (12%), 1/21 (5%), 6/16 (38%), and 5/56 (9%) among Japanese men, Japanese women, Thai men, and Thai women, respectively. The prevalence of low muscle strength was 2/26 (8%), 2/21 (10%), 3/16 (19%), and 13/56 (23%) among Japanese men, Japanese women, Thai men, and Thai women, respectively. There were significant differences between ethnic groups in body mass index for both sexes, percentage body fat in women, SMI in men, and average grip strength in men. Ethnic group, sex, age, and body mass index were independent predictors of SMI.@*CONCLUSIONS@#Ethnicity had a clinically important effect on body composition and physical strength among older Japanese and Thai adults living in a similar environment.


Subject(s)
Aged , Aging/physiology , Asians/ethnology , Body Composition , Body Mass Index , Cross-Sectional Studies , Electric Impedance , Ethnicity , Female , Hand Strength , Humans , Independent Living , Male , Middle Aged , Muscle Strength , Thailand/ethnology , Walking Speed
19.
Article in Chinese | WPRIM | ID: wpr-880471

ABSTRACT

The bioelectrical impedance measurement is a detection technique that uses the electrical characteristics and changes in human tissues and organs to detect biomedical information related to human physiological and pathological conditions. This article makes a comprehensive introduction from the aspects of impedance cardiography, electrical impedance respiratory monitoring, electrical impedance tomography, electrical impedance gastric dynamics detection technique, contact impedance and so on, as well as comprehensively introduces the progress and application status of bioelectrical impedance measurement methods.


Subject(s)
Electric Impedance , Humans , Monitoring, Physiologic , Tomography
20.
Article in English | LILACS, SES-SP | ID: biblio-1136745

ABSTRACT

ABSTRACT Objective: To explore changes in the nutritional status of pediatric cancer patients before and after chemotherapy and evaluate the correlation between deuterium oxide dilution, bioelectric impedance analysis, and anthropometry for assessment of body composition. Methods: This study included 14 children (aged 5.6 to 13.6 years) and classified them as having hematologic or solid tumors. They had their body composition analyzed according to deuterium oxide, bioelectric impedance, and anthropometric measurements before the first chemotherapy cycle and after three and six months of therapy. Results: The patients in the hematologic tumor group had an increase in weight, height, body mass index, waist, hip, and arm circumference, subscapular skinfold thickness, and fat mass with the isotope dilution technique during chemotherapy. In the solid tumor group, the children showed a reduction in fat-free mass when assessed by bioimpedance analysis. We found a positive correlation between the triceps skinfold thickness and fat mass determined by bioimpedance analysis and deuterium oxide. The arm muscle circumference correlated with the fat-free mass estimated by bioimpedance analysis and deuterium oxide. Conclusions: Patients with hematologic tumors had an increase in body weight, height, and fat mass, which was not identified in the solid tumor group. The positive correlation between anthropometry (triceps skinfold thickness and arm muscle circumference), deuterium oxide dilution, and bioelectric impedance analysis shows the applicability of anthropometry in clinical practice.


RESUMO Objetivo: Verificar mudanças no estado nutricional de crianças com câncer antes e após o tratamento quimioterápico e avaliar a correlação entre diluição de óxido de deutério, análise de impedância bioelétrica (BIA) e dados antropométricos. Métodos: Quatorze crianças (entre 5,6 e 13,6 anos de idade) foram incluídas e classificadas como tendo tumores hematológicos ou sólidos. A composição corporal foi medida pelo óxido de deutério, impedância bioelétrica e medidas antropométricas antes da primeira quimioterapia e após três e seis meses de terapia. Resultados: Os pacientes do grupo de tumores hematológicos aumentaram o peso, a estatura, o índice de massa corporal, a circunferência da cintura, quadril e braço, dobra cutânea subescapular e a massa gorda com a técnica de diluição isotópica durante o tratamento quimioterápico. No grupo de tumores sólidos, as crianças mostraram uma redução na massa magra quando avaliadas por análise de impedância. Houve uma correlação positiva entre a dobra cutânea tricipital e a massa gorda determinadas pela análise de impedância e pelo óxido de deutério. A circunferência muscular do braço correlacionou-se com a massa magra estimada pela análise de impedância e pelo óxido de deutério. Conclusões: Pacientes com tumores hematológicos tiveram aumento no peso corporal, estatura e massa gorda, o que não foi observado naqueles com tumores sólidos. A boa correlação entre a antropometria (dobra cutânea tricipital e circunferência muscular do braço), a diluição do óxido de deutério e a análise da impedância bioelétrica mostra a aplicabilidade da antropometria na prática clínica.


Subject(s)
Humans , Male , Female , Child, Preschool , Child , Adolescent , Anthropometry/methods , Nutritional Status , Electric Impedance , Deuterium Oxide/metabolism , Body Composition , Deuterium Oxide/administration & dosage , Neoplasms/physiopathology
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