| Theme | New Trends in Nutritional Assessment of Dialysis Patients | |
|---|---|---|
| Title | Nutritional assessment by bioelectrical impedance analysis in dialysis patients | |
| Publish Date | 2004/11 | |
| Author | Toshiyuki Nakao | Department of Nephrology, Tokyo Medical University |
| Author | Yoshie Kanazawa | Department of Nephrology, Tokyo Medical University / Tokyo Kasei-Gakuin Junior College |
| Author | Asako Gondou | Department of Nephrology, Tokyo Medical University |
| [ Summary ] | Bioelectrical impedance analysis (BIA) is now widely used for the evaluation of body composition in various fields, since it is easy to use and can be readily repeated. As the human body can be modeled as a cylindrical conductor with its length proportional to the subject's height, BIA measures the impedance by conducting a low alternating current through the body. Based on the impedance measured, the volume of body water, fat and protein mass are all calculated using formulas. A stable state of tissue hydration is crucial for reliable BIA measurement, clothing, skin temperature, meal time and weight of food in the intestines affect the accuracy of measurements. To assess static protein reserves of the whole body and evaluate nutritional status in dialysis patients, we recently designed the body protein index (BPI) which is calculated using body protein mass (BPM) measured by BIA and expressed as BPM (kg) / height (m)2. As a result, 24.6% of maintenance hemodialysis patients were considered to be moderately or severely malnourished. |
|