ABSTRACT
Se realizó un estudio descriptivo y transversal de 99 pacientes con enfermedad pulmonar obstructiva crónica, atendidos en consulta de Neumología del Hospital General Docente Dr Juan Bruno Zayas Alfonso de Santiago de Cuba, del 1 al 15 de febrero de 2015, con vistas a determinar algunos compartimientos de la composición corporal, según el modelo de organización bicompartimental del cuerpo humano y el método de la bioimpedancia eléctrica. En la serie predominaron el sexo masculino y las edades de 50 a 69 años de edad, y los grados III y II, en ese orden de frecuencia, fueron los más representativos de la enfermedad. Por su parte, la desnutrición y la disfunción muscular resultaron 2 factores determinantes de la gravedad clínica y el pronóstico de la afección. De los parámetros bioeléctricos analizados, se ratificó la masa muscular esquelética como el de supervivencia y de morbilidad y mortalidad; asimismo se demostró el ángulo de fase como parámetro de la bioimpedancia, mayormente establecido para el diagnóstico y el pronóstico clínicos
A descriptive and cross-sectional study of 99 patients with chronic obstructive pulmonary disease was carried out. They were assisted in the Pneumology Service Dr Juan Bruno Zayas Alfonso Teaching General Hospital in Santiago de Cuba, from February 1st to 15th, 2015 aimed at determining some compartments of body composition, according to the pattern of bicompartment organization of the human body and the method of the electric bioimpedance. In the series there was a prevalence of the male sex aged 50 to 69, and a higher frequency of III and II degrees (in that order) of the disease. On the other hand, malnutrition and muscular dysfunction were the 2 determining factors of clinical severity and prognosis of the disorder. Of the bioelectric parameters analyzed, the skeletal muscular mass was ratified as that of survival, morbidity and mortality; also the phase angle was demonstrated as bioimpedance parameter, mostly established for the clinical diagnosis and prognosis
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Body Composition , Electric Impedance , Pulmonary Disease, Chronic Obstructive , Somatotypes , Secondary Care , Body Mass Index , Epidemiology, Descriptive , Cross-Sectional StudiesABSTRACT
Se efectuó un estudio para comparar entre sí 3 ecuaciones para la estimación de la masa libre de grasa --seleccionadas aleatoriamente de la bibliografía sobre el tema-- y estas, a su vez, con aquella estimada a partir del criterio clínico. Para esto se tuvieron en cuenta los valores no corregidos y corregidos de la resistencia eléctrica corporal, y se usaron como criterios estadísticos las diferencias de medias (distribución de la t de Student) y el método de Bland Altman. Los resultados mostraron que estas ecuaciones de estimación para la masa libre de grasa pueden usarse en la evaluación clínica (en sujetos aparentemente sanos y en enfermos) si a cada una le es introducido un factor de corrección
A study with the purpose of comparing 3 equations --selected at ramdom from the literature on the topic-- for the estimation of fat free mass was carried out, and these, in turn, with that estimated when using the clinical approach. For this, the not corrected and corrected values of the corporal electric resistance were taken into account, and mean differences were used as statistical approaches (distribution of the Student´s t test) and the Bland Altman method. The results showed that these estimate equations for fat free mass can be used in the clinical evaluation (in apparently healthy persons and in sick individuals) if a correction factor is introduced to each of them
Subject(s)
Electric ImpedanceABSTRACT
Se realizó un estudio transversal y controlado, a fin de evaluar la influencia de los valores no corregidos y corregidos de la resistencia eléctrica, medidos con los analizadores Bodystat® 1500-MDD y BioScan® 98 en el agua corporal total y la masa libre de grasa, de 31 sujetos aparentemente sanos y 31 niños con diferentes afecciones, atendidos en el Servicio de Oncohematología del Hospital Infantil Sur de Santiago de Cuba, desde septiembre hasta octubre del 2009. Se emplearon 2 ecuaciones por cada parámetro biológico, y como criterio estadístico la prueba t de student de 2 medias de muestras apareadas. La diferencia entre los valores no corregidos y corregidos de la resistencia eléctrica no influyó significativamente en los 2 parámetros biológicos; por tanto, es posible usarlos indistintamente para estimar el agua corporal total y la masa libre de grasa en individuos aparentemente sanos y pacientes con diferentes enfermedades.
A cross-sectional and controlled study was carried out, in order to evaluate the influence of the unadjusted and adjusted values of electric resistance, measured with the analyzers Bodystat® 1500-MDD and BioScan® 98 in the total body water and the fat free mass, of 31 apparently healthy persons and 31 children with different disorders, assisted in the Oncohematology Service of the Southern Pediatric Hospital in Santiago de Cuba, from September to October, 2009. Two equations were used for each biological parameter, and as statistical criterium the paired samples T test was used. The difference between the unadjusted and adjusted values of the electric resistance didn't influence significantly in the 2 biological parameters; therefore, it is possible to use them indistinctly to estimate the total body water and the fat free mass in apparently healthy individuals and patients with different diseases.
ABSTRACT
Simultaneous intraoperative measurements of eardiac output were obtained in twenty one patients with thoracic electric bioimpedance(TEB) and transesophageal Doppler, two patients with transesophageal Doppler and thermodilution, one patient with TEB and thermodilution, and three patients with TEB, transesophageal Doppler and thermodilution techniques to evaluate the utility of noninvasive methods. Pairs of measurments were obtained 6S times with TEB and thermodilution, 109 times with transesophageal Doppler and thermodilution, and 373 times with TEB and transesophageal Doppler techniques. Correlation of the measurements was poor, with r=0.39 for TEB and thermodilution, r=0.44 for transesophageal Doppler and thermodilution, and r=0.39 for TEB and transesophageal Doppler. The mean difference between TEB and thermodilution, transesophageal Doppler and thermodilution, and TEB and transesophageal Doppler values was -2.41+/-1.79 L/min(mean+/-SD), -0.98+/-1.70 L/min, and -0.69+/-1.01 L/min, respectively. The scattergrams with confidence band lines showed that 22.0% of the scattergram points fell within +/-20% band and 51.5% within +/-40% band in TEB and thermodilution, 55.0% of the scattergram points fell within +/-20% band and 77.9% within +/-40% band in transesophageal Doppler and thermodilution, and 63.6% of the scattergram points fell within +/-20% band and 90.9 within +/-40% band in TEB and transesophageal Doppler. Therefore, it is concluded that neither noninvasive technique reliably estimated cardiac output as determined by thermodilution.