Maria Cristina Gonzalez Barbosa-Silva

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PURPOSE OF REVIEW The bioelectrical impedance analysis is not a direct method for estimating body composition. Its accuracy depends on regression equations, and recent papers have suggested that this approach should not be used in several clinical situations. Another option is to obtain information about the electrical properties of tissues by using raw(More)
BACKGROUND Phase angle is an indicator based on reactance and resistance obtained from bioelectrical impedance analysis (BIA). Although its biological meaning is still not clear, phase angle appears to have an important prognostic role. OBJECTIVE The aim of this study was to estimate population averages and SDs of phase angle that can be used as reference(More)
OBJECTIVE Malnutrition is characterized by changes in cellular membrane integrity and alterations in fluid balance, both of which can be detected by bioelectrical impedance analysis (BIA). We investigated whether BIA-measured variables could detect malnutrition, as defined by the Subjective Global Assessment (SGA), in preoperative surgical patients. (More)
BACKGROUND AND AIMS Malnutrition increases morbidity and mortality in surgical patients, and for this reason, several nutritional markers have been used as prognostic tools to identify surgical patients under a higher risk to develop complications in post-operative period. Few studies show the impact of nutritional markers after controlling for others(More)
BACKGROUND & AIMS Severe obesity imposes physical limitations to body composition assessment. Our aim was to compare body fat (BF) estimations of severely obese patients obtained by bioelectrical impedance (BIA) and air displacement plethysmography (ADP) for development of new equations for BF prediction. METHODS Severely obese subjects (83 female/36(More)
BACKGROUND The subjective global assessment is a clinical method for nutritional assessment that considers not only body composition alterations but also changes in physiological function. The method is simple, inexpensive and non-invasive, and it can be performed at bedside. Although the subjective global assessment was developed to assess surgical(More)
PURPOSE OF REVIEW Subjective global assessment is a clinical tool for assessing nutritional status that merges alterations in body composition and physiological function. Although it was first described almost two decades ago, many studies using this method have been published during the past few years. This review describes recent findings from such(More)
BACKGROUND AND OBJECTIVES Phase angle (PA) is the difference between voltage and current and can be used as an indicator of body cell mass. Clinical studies show that low phase angle is associated with morbidity and mortality of critical patients. The purpose of this study was to know the relation between phase angle and the Pediatric Risk of Mortality I(More)
BACKGROUND The subjective global assessment is a clinical method for nutritional assessment that considers not only body composition alterations but also changes in physiological function. The method is simple, inexpensive and non-invasive, and it can be performed at bedside, and its use was described for the first time almost two decades ago. AIM To(More)
BACKGROUND & OBJECTIVES To determine reference values and associated factors for handgrip strength among healthy adults. METHODS Three hundred well nourished (SGA category A) subjects were studied, aged 18-90 years. Handgrip strength (HS) was determined using a hand dynamometer. Adductor pollicis muscle (APM) thickness and other anthropometric variables(More)