BACKGROUND: The ratio of bioimpedance in the right leg (rl-RBI) may be helpful in adjusting dry body weight (DBW) in new hemodialysis (HD) patients. METHODS: rl-RBI was calculated as follows: rl-RBI = impedance at 50 kHz/impedance at 500 kHz, as measured by bioimpedance spectroscopy (BIS). Theoretically, rl-RBI is inversely related to extracellular water. A reference range of rl-RBI was obtained from 137 chronic but stable HD patients already achieving DBW. In 34 new HD patients (females:males = 16:18; age 49 +/- 12 years), DBW(s) were stepwise adjusted under the guidance of rl-RBI by modifying the amount of ultrafiltration. RESULTS: The target range of rl-RBI was defined as 1.106-1.150. rl-RBI before the first HD was 1.115 +/- 0.027. At the study endpoint, when the target range of rl-RBI was achieved, pretibial pitting edema and pulmonary edema were resolved without any episode of muscle cramping or intradialytic hypotension. Along with an increase in rl-RBI, pre-HD blood pressure tended to decrease at systole (p = 0.072) and diastole (p = 0.005). The cardiothoracic ratio also decreased significantly (p = 0.004). CONCLUSION: The measurement of rl-RBI by BIS is worthy of further evaluation as an objective and applicable index for determining DBW in new HD patients. Copyright 2008 S. Karger AG, Basel.
BACKGROUND: The ratio of bioimpedance in the right leg (rl-RBI) may be helpful in adjusting dry body weight (DBW) in new hemodialysis (HD) patients. METHODS: rl-RBI was calculated as follows: rl-RBI = impedance at 50 kHz/impedance at 500 kHz, as measured by bioimpedance spectroscopy (BIS). Theoretically, rl-RBI is inversely related to extracellular water. A reference range of rl-RBI was obtained from 137 chronic but stable HDpatients already achieving DBW. In 34 new HDpatients (females:males = 16:18; age 49 +/- 12 years), DBW(s) were stepwise adjusted under the guidance of rl-RBI by modifying the amount of ultrafiltration. RESULTS: The target range of rl-RBI was defined as 1.106-1.150. rl-RBI before the first HD was 1.115 +/- 0.027. At the study endpoint, when the target range of rl-RBI was achieved, pretibial pitting edema and pulmonary edema were resolved without any episode of muscle cramping or intradialytic hypotension. Along with an increase in rl-RBI, pre-HD blood pressure tended to decrease at systole (p = 0.072) and diastole (p = 0.005). The cardiothoracic ratio also decreased significantly (p = 0.004). CONCLUSION: The measurement of rl-RBI by BIS is worthy of further evaluation as an objective and applicable index for determining DBW in new HDpatients. Copyright 2008 S. Karger AG, Basel.
Authors: C Demirci; G Aşcı; M S Demirci; M Özkahya; H Töz; S Duman; S Sipahi; S Erten; M Tanrısev; E Ok Journal: Int Urol Nephrol Date: 2016-04-19 Impact factor: 2.370
Authors: Francesca de Blasio; Francesco de Blasio; Giulia Miracco Berlingieri; Andrea Bianco; Marta La Greca; Frits M E Franssen; Luca Scalfi Journal: Int J Chron Obstruct Pulmon Dis Date: 2016-09-30