Model-based identification and diagnosis of a porcine model of induced endotoxic shock with hemofiltration.
نویسندگان
چکیده
A previously validated cardiovascular system (CVS) model and parameter identification method for cardiac and circulatory disease states are extended and further validated in a porcine model (N=6) of induced endotoxic shock with hemofiltration. Errors for the identified model are within 10% when the model is re-simulated and compared to the clinical data. All identified parameter trends over time in the experiments match clinically expected changes both individually and over the cohort. This work represents a further clinical validation of these model-based cardiovascular diagnosis and therapy guidance methods for use with monitoring endotoxic disease states.
منابع مشابه
Model-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 کاملModel-based therapeutics for the cardiovascular system – a clinical focus
This paper focuses on clinical results of a model-based cardiac diagnosis and therapy methodology. The method allows for accurate patient specific identification and prediction of a broad range of hemodynamics typical in the critically ill. Extensive porcine experiments have been performed involving drug induced pulmonary embolism and septic shock including hemofiltration therapy. The model-bas...
متن کاملSubject-specific cardiovascular system model-based identification and diagnosis of septic shock with a minimally invasive data set: animal experiments and proof of concept.
A cardiovascular system (CVS) model and parameter identification method have previously been validated for identifying different cardiac and circulatory dysfunctions in simulation and using porcine models of pulmonary embolism, hypovolemia with PEEP titrations and induced endotoxic shock. However, these studies required both left and right heart catheters to collect the data required for subjec...
متن کاملPatient-specific modelling of the cardiovascular system – application to septic shock with a minimal data set
We use a previously validated cardiovascular system (CVS) model and parameter identification method to identify the pig-specific parameters during induced endotoxic shock. Six anesthetized healthy pigs weighing 20-30 kg received a 0.5mg/kg endotoxin infusion over a period of 30 mins from T0 to T30. Only right heart measurements were obtained and thus significantly less data was available for th...
متن کاملEvaluation 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 کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Mathematical biosciences
دوره 216 2 شماره
صفحات -
تاریخ انتشار 2008