Total body potassium and serum potassium among eating disorder patients

The purpose of the study was to determine body composition, including total body potassium (TBK+), serum potassium, and lean body mass (LBM), in anorexia nervosa. TBK+ measurements, serum potassium levels, and anthropometric measurements were obtained from four anorectic patients in the first week a...

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Bibliographic Details
Published in:The International journal of eating disorders 1995-11, Vol.18 (3), p.269-276
Main Authors: Powers, P.S. (University of South Florida, Tampa, FL.), Tyson, I.B, Stevens, B.A, Heal, A.V
Format: Article
Language:English
Subjects:
Adult
Adult and adolescent clinical studies
Aged
Anorexia
Anorexia Nervosa - blood
Anorexia Nervosa - diagnosis
Anorexia Nervosa - psychology
Biological and medical sciences
Body Composition - physiology
Body Mass Index
CARENCE MINERALE
Child
DEFICIENCIA DE MINERALES
Eating behavior disorders
Eating disorders
ESTADO NUTRICIONAL
ESTUDIOS DE CASOS PRACTICOS
ETAT NUTRITIONNEL
ETUDE DE CAS
Female
FEMME
Humans
Hypokalemia - blood
Hypokalemia - diagnosis
Hypokalemia - psychology
Life Change Events
Medical sciences
MEDICION DEL CUERPO
MENSURATION CORPORELLE
Metabolism
Miscellaneous
MUJERES
Patient Admission
PESO
POIDS
POTASIO
POTASSIUM
Potassium - blood
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Reference Values
SERUM SANGUIN
SUERO SANGUINEO
TRASTORNOS ALIMENTICIOS
TROUBLE ALIMENTAIRE
Weight Gain - physiology
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Summary:The purpose of the study was to determine body composition, including total body potassium (TBK+), serum potassium, and lean body mass (LBM), in anorexia nervosa. TBK+ measurements, serum potassium levels, and anthropometric measurements were obtained from four anorectic patients in the first week after their hospital admission. All four patients had normal serum potassium levels but three of the four had significant depletion of total body potassium. Two methods of calculating LBM, based on TBK+ measures or anthropometric assessment, produced different results. TBK+ may be depleted even when serum potassium levels are normal. It was also concluded that the two methods of calculating LBM were inaccurate. Patients may be at risk for cardiac arrhythmias and other physiological abnormalities even when serum potassium is normal since TBK+ may be low. The need for comprehensive assessment of body composition based on four compartment models is discussed
ISSN:0276-3478
1098-108X
DOI:10.1002/1098-108X(199511)18:3<269::AID-EAT2260180309>3.0.CO;2-F