Bioimpedance and Bioimpedance Vector Analysis in patients with Anorexia Nervosa

Haas, Verena; Riedl, Andrea; Hofmann, Tobias; Nischan, Annette; Burghardt, Roland; Boschmann, Michael; Klapp, Burghard F.

doi:10.1002/erv.1166

Cited by 23 publications

(26 citation statements)

References 25 publications

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“…Only two studies used a gold standard (DXA) as a reference technique (Table 1). In general, the results of BIVA and BMI showed a good agreement ( Table 2): BMI was positively related to phase angle 13,18,[21][22][23][24][25][26][27][28][29][30] and negatively related to vector length. 13,18,21,22,[26][27][28][29][30][31] As supposed according to classic BIVA, 13 bioelectrical vectors of obese individuals, diagnosed on the basis of their BMI, were located on the lower left quadrant of the tolerance ellipses, being characterized by short vector length and high phase 13,19,22,29,[31][32][33] (Tables 2 and 3).…”

Section: Participants and Methodologiesmentioning

confidence: 96%

“…In particular, vectors of cachectic individuals fell toward the lower pole, 39,41 whereas those of anorexic and sarcopenic ones toward the upper pole. 13,23,26,42,43 A peculiar case is that of patients with Alzheimer's disease, whose vectors were characterized by low phase and high impedance, hence located in the region of lean individuals (upper right quadrant of the RXc graph), despite showing a BMI similar to that of age-matched controls (possibly related to a relatively high proportion of fat mass). 44 The association between BIA and BIVA findings was not always evident (Table 4).…”

Section: Participants and Methodologiesmentioning

confidence: 99%

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Bioelectrical impedance vector analysis (BIVA) for the assessment of two-compartment body composition

et al. 2014

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This review is directed to define the efficacy of bioelectrical impedance vector analysis (BIVA) for assessing two-compartment body composition. A systematic literature review using MEDLINE database up to 12 February 2014 was performed. The list of papers citing the first description of BIVA, obtained from SCOPUS, and the reference lists of included studies were also searched. Selection criteria included studies comparing the results of BIVA with those of other techniques, and studies analyzing bioelectrical vectors of obese, athletic, cachectic and lean individuals. Thirty articles met the inclusion criteria. The ability of classic BIVA for assessing two-compartment body composition has been mainly evaluated by means of indirect techniques, such as anthropometry and bioelectrical impedance analysis (BIA). Classic BIVA showed a high agreement with body mass index, that can be interpreted in relation to the greater body mass of obese and athletic individuals, whereas the comparison with BIA showed less consistent results, especially in diseased individuals. When a reference method was used, classic BIVA failed to accurately recognize FM% variations, whereas specific BIVA furnished good results. Specific BIVA is a promising alternative to classic BIVA for assessing two-compartment body composition, with potential application in nutritional, sport and geriatric medicine.

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Section: Participants and Methodologiesmentioning

confidence: 96%

Section: Participants and Methodologiesmentioning

confidence: 99%

Bioelectrical impedance vector analysis (BIVA) for the assessment of two-compartment body composition

et al. 2014

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“…In [69] the BIVA method successfully monitored rapid increases in ECF during short term recovery (3 weeks) and a dramatic increase in BCM during long term recovery (3 months) among 47% of 57 diseased women with anorexia nervosa [5]. …”

Section: Fundamentals Of Bioimpedance Measurement Techniquesmentioning

confidence: 99%

The Theory and Fundamentals of Bioimpedance Analysis in Clinical Status Monitoring and Diagnosis of Diseases

Khalil

Mohktar

Ibrahim

2014

Sensors

487

313

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Bioimpedance analysis is a noninvasive, low cost and a commonly used approach for body composition measurements and assessment of clinical condition. There are a variety of methods applied for interpretation of measured bioimpedance data and a wide range of utilizations of bioimpedance in body composition estimation and evaluation of clinical status. This paper reviews the main concepts of bioimpedance measurement techniques including the frequency based, the allocation based, bioimpedance vector analysis and the real time bioimpedance analysis systems. Commonly used prediction equations for body composition assessment and influence of anthropometric measurements, gender, ethnic groups, postures, measurements protocols and electrode artifacts in estimated values are also discussed. In addition, this paper also contributes to the deliberations of bioimpedance analysis assessment of abnormal loss in lean body mass and unbalanced shift in body fluids and to the summary of diagnostic usage in different kinds of conditions such as cardiac, pulmonary, renal, and neural and infection diseases.

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“…1 On the other hand, normal plasma vitamin and macronutrient concentrations should not be misinterpreted in patients with AN as normal micronutrient and vitamin status, as these values too can be affected by dehydration. 4 The accuracy of bioelectrical impedance analysis (BIA) is limited in patients with a body mass index (BMI) below 16 kg/m 2 and in patients with AN, 5, 6 but phase angle (PA), a parameter of BIA, can be considered an index of the integrity of the cell membrane. PA identifies extra/intracellular water distribution: a low PA being a common finding in severe malnutrition.…”

Section: Introductionmentioning

confidence: 99%

Hematological complications in anorexia nervosa

et al. 2016

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Background/objectives:Anemia, leukopenia and, although less frequently, thrombocytopenia are possible hematological complications of anorexia nervosa considered strictly secondary to chronic malnutrition. This is a retrospective study on the prevalence of these disorders in a large cohort of 318 female patients with AN (20.4±5.6 years, body mass index (BMI) 15.9±1.6 kg/m2), recruited in the Outpatient Unit for Malnutrition secondary to Eating Disorders at the Department of Clinical Medicine and Surgery, Federico II University Hospital, since February 1991 to December 2012.Subjects/methods:Patients were studied on an outpatient basis after obtaining medical history, clinical examination, routine hematobiochemical and endocrine tests, electrocardiography, psychiatric interview and bioelectrical impedance analysis and, in particular, phase angle determination. All patients with other comorbidities, in particular with mean corpuscular volume <80 fl, were excluded for suspected genetic alteration in the synthesis of hemoglobin.Results:Hematologic data showed that 16.7% of patients had anemia, 7.9% neutropenia and 8.9% thrombocytopenia. These abnormalities were strictly related to the duration of illness (P=0.028), and to protein energy malnutrition, in particular, BMI and phase angle (P<0.001).Conclusions:Our study offers description of the incidence of hematologic defects in a selected and large sample of AN female patients, suggesting that its incidence is related to the degree and duration of protein energy malnutrition.

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Bioimpedance and Bioimpedance Vector Analysis in patients with Anorexia Nervosa

Abstract: Conventional BIA has little utility in these patients. However, BIVA could be a suitable alternative in the medical management reflecting ECW volume changes and later genuine tissue mass increases.

Cited by 23 publications

References 25 publications

Bioelectrical impedance vector analysis (BIVA) for the assessment of two-compartment body composition

Bioelectrical impedance vector analysis (BIVA) for the assessment of two-compartment body composition

The Theory and Fundamentals of Bioimpedance Analysis in Clinical Status Monitoring and Diagnosis of Diseases

Hematological complications in anorexia nervosa

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