BACKGROUND: Continuous hemofiltration improves hemodynamics in critically ill patients by removing cytokines from the plasma. The mechanism, however, remains to be clarified since recent studies show conflicting findings. The present study was therefore designed to evaluate hemodynamic changes and kinetics of tumor necrosis factor (TNF)alpha, interleukin (IL)1beta and IL6 in patients with septic shock and acute renal failure (ARF) undergoing continuous veno-venous hemofiltration (CWHF), over a 24-hour period. METHODS: Eleven patients admitted to the ICU for septic shock with ARF were investigated with radial artery and pulmonary artery catheterization during isovolemic CWHF using AN69 hemofilters at a blood flow rate of 240 mL/min and ultrafiltration 1.65 +/- 0.33 L/h. Hemodynamic measurements (mean arterial pressure, right arterial pressure, pulmonary artery pressure, pulmonary vascular resistance, systemic vascular resistance, cardiac output and tissue oxygenation indeces) were obtained before and after 2h, 4h, 6h, 12h and 24 h of CVVHF. Blood samples from the pre- and postfilter lines and ultrafiltrate samples were collected for the radioimmunoassay of TNFalpha, IL1beta and IL6 before and at 2h, 4h, 6h, 12h and 24h. RESULTS: During CVVHF, mean arterial pressure rose from 67 +/- 7 mm Hg to 89 +/- 5 mm Hg (p < 0.05) and indexed systemic vascular resistance from 711 +/- 153 dyne.s.cm(-5)/m2 to 1,200 +/- 100 dyne.s.cm(-5)/m2 (p < 0.05). Serum lactate and oxygen consumption did not change. Mean arterial pressure and systemic vascular resistance were not correlated to the lowering of body temperature during CVVHF. Significant clearance of IL6 was achieved, but not of TNFa, though the plasma concentrations of both cytokines were unaffected throughout the study. IL1beta was not detectable. Two patients were discharged alive with normal renal function. CONCLUSION: In patients with septic shock and ARF, CVVHF improves mean arterial pressure and systemic vascular resistance. This effect does not appear to be related to the removal of cytokines. The effect of CVVHF on mortality and morbidity in the long term, in septic shock has still to be established.
BACKGROUND: Continuous hemofiltration improves hemodynamics in critically illpatients by removing cytokines from the plasma. The mechanism, however, remains to be clarified since recent studies show conflicting findings. The present study was therefore designed to evaluate hemodynamic changes and kinetics of tumor necrosis factor (TNF)alpha, interleukin (IL)1beta and IL6 in patients with septic shock and acute renal failure (ARF) undergoing continuous veno-venous hemofiltration (CWHF), over a 24-hour period. METHODS: Eleven patients admitted to the ICU for septic shock with ARF were investigated with radial artery and pulmonary artery catheterization during isovolemic CWHF using AN69 hemofilters at a blood flow rate of 240 mL/min and ultrafiltration 1.65 +/- 0.33 L/h. Hemodynamic measurements (mean arterial pressure, right arterial pressure, pulmonary artery pressure, pulmonary vascular resistance, systemic vascular resistance, cardiac output and tissue oxygenation indeces) were obtained before and after 2h, 4h, 6h, 12h and 24 h of CVVHF. Blood samples from the pre- and postfilter lines and ultrafiltrate samples were collected for the radioimmunoassay of TNFalpha, IL1beta and IL6 before and at 2h, 4h, 6h, 12h and 24h. RESULTS: During CVVHF, mean arterial pressure rose from 67 +/- 7 mm Hg to 89 +/- 5 mm Hg (p < 0.05) and indexed systemic vascular resistance from 711 +/- 153 dyne.s.cm(-5)/m2 to 1,200 +/- 100 dyne.s.cm(-5)/m2 (p < 0.05). Serum lactate and oxygen consumption did not change. Mean arterial pressure and systemic vascular resistance were not correlated to the lowering of body temperature during CVVHF. Significant clearance of IL6 was achieved, but not of TNFa, though the plasma concentrations of both cytokines were unaffected throughout the study. IL1beta was not detectable. Two patients were discharged alive with normal renal function. CONCLUSION: In patients with septic shock and ARF, CVVHF improves mean arterial pressure and systemic vascular resistance. This effect does not appear to be related to the removal of cytokines. The effect of CVVHF on mortality and morbidity in the long term, in septic shock has still to be established.
Authors: Patrick M Honore; Rita Jacobs; Olivier Joannes-Boyau; Willem Boer; Elisabeth De Waele; Viola Van Gorp; Jouke De Regt; Herbert D Spapen Journal: Mol Med Date: 2012-12-20 Impact factor: 6.354
Authors: Olivier Joannes-Boyau; Patrick M Honoré; Paul Perez; Sean M Bagshaw; Hubert Grand; Jean-Luc Canivet; Antoine Dewitte; Claire Flamens; Wilfried Pujol; Anne-Sophie Grandoulier; Catherine Fleureau; Rita Jacobs; Christophe Broux; Hervé Floch; Olivier Branchard; Stephane Franck; Hadrien Rozé; Vincent Collin; Willem Boer; Joachim Calderon; Bernard Gauche; Herbert D Spapen; Gérard Janvier; Alexandre Ouattara Journal: Intensive Care Med Date: 2013-06-06 Impact factor: 17.440
Authors: Nicolas Mayeur; Lionel Rostaing; Marie B Nogier; Acil Jaafar; Olivier Cointault; Nassim Kamar; Jean M Conil; Olivier Fourcade; Laurence Lavayssiere Journal: Crit Care Date: 2010-06-14 Impact factor: 9.097
Authors: Rinaldo Bellomo; Miklos Lipcsey; Paolo Calzavacca; Michael Haase; Anjia Haase-Fielitz; Elisa Licari; Augustine Tee; Louise Cole; Alan Cass; Simon Finfer; Martin Gallagher; Joanne Lee; Serigne Lo; Colin McArthur; Shay McGuinness; John Myburgh; Carlos Scheinkestel Journal: Intensive Care Med Date: 2013-01-11 Impact factor: 17.440
Authors: Patrick M Honore; Rita Jacobs; Olivier Joannes-Boyau; Jouke De Regt; Willem Boer; Elisabeth De Waele; Vincent Collin; Herbert D Spapen Journal: Ann Intensive Care Date: 2011-08-09 Impact factor: 6.925