Model-based Monitoring of Septic Shock Treated with Large-pore Hemofiltration Therapy
نویسندگان
چکیده
The diagnostic ability of model-based monitoring systems offer significant clinical potential. This research tests, the clinical ability of a model-based system for tracking hemodynamic changes in a porcine study on septic shock and large pore hemofiltration (LPHF) therapy. Typically available or inferable intensive care unit (ICU) measurements are used to identify subject-specific models of the cardiovascular system (CVS). The approach accurately identified known trends of septic shock including a drop in systemic vascular resistance and right ventricular distension, and accurately predicted left and right ventricular volumes and pressures. The method also quantified each subject’s individual response to the disease and corresponding LPHF therapy. These results indicate the clinical potential of using modelbased methods for tracking acute hemodynamic changes in cardiovascular compromised individuals.
منابع مشابه
Evaluation of a Model-Based Hemodynamic Monitoring Method in a Porcine Study of Septic Shock
INTRODUCTION The accuracy and clinical applicability of an improved model-based system for tracking hemodynamic changes is assessed in an animal study on septic shock. METHODS This study used cardiovascular measurements recorded during a porcine trial studying the efficacy of large-pore hemofiltration for treating septic shock. Four Pietrain pigs were instrumented and induced with septic shoc...
متن کاملModel-based cardiovascular monitoring of large pore hemofiltration during endotoxic shock in pigs
Hemodynamic measurements were recorded every 30 minutes in 4 (porcine model) trials of 4 hours. Animals received a 0.5mg/kg endotoxin infusion over the first 30 minutes and underwent zero-balance continuous veno-venous filtration with 0.7m large pore substrate (80kDa cut-off) from 60 minutes onwards [1]. Subject-specific CVS models were fitted to 34 sets of data from the four trials. Each data ...
متن کاملContinuous hemofiltration/hemodiafiltration in critical care.
Continuous hemofiltration and continuous hemodiafiltration (CHF/CHDF) were developed as continuous renal replacement therapy for patients with severe conditons and has come to be widely performed mainly in critical care, taking the place of intermittent hemodialysis. The membrane pore size of a hemofilter used for CHF/CHDF allows passage of substances ranging from 30,000 to 50,000 Da, and the m...
متن کاملUse of high-volume haemodiafiltration in patients with refractory septic shock and acute kidney injury
BACKGROUND High-volume haemofiltration (HVHF) has been used successfully in animal models with sepsis, and preliminary data have shown that this technique may improve the haemodynamics in patients with refractory septic shock. We used high-volume continuous venovenous haemodiafiltration (CVVHDF) in patients with acute kidney injury (AKI) and refractory septic shock to evaluate their outcome whe...
متن کاملBioartificial kidney ameliorates gram-negative bacteria-induced septic shock in uremic animals.
The bioartificial kidney (BAK) consists of a conventional hemofiltration cartridge in series with a renal tubule assist device (RAD) containing 10(9) porcine renal proximal tubule cells. BAK replaces filtration, transport, and metabolic and endocrinologic activities of a kidney. Previous work in an acutely uremic dog model demonstrated that BAK ameliorated endotoxin (lipopolysaccharide [LPS])-i...
متن کامل