Estimation Of Respiratory Parameters During Mechanical Ventilation:
A Simple Method Taking Account Of Tubing Compliance
Author(s)
C. Brighenti, G. Gnudi & S. Severi
Abstract
Estimation of respiratory parameters during
mechanical ventilation: a simple method taking
account of tubing compliance
C. Brighenti, G. Gnudi & S.Severi
Department of Electronics, Computer Science and Systems (DEIS),
University of Bologna, Italy
Abstract
A lumped parameter non linear model of a typical ventilator-patient circuit was
used to simulate flow and pressure signals in a wide variety of respiratory
disorders. Patient lungs were described by the series connection of a compliance
(Cl = constant) and a resistance proportional to the airflow (Kl = proportionality
constant). Aim of this work is to present an estimation algorithm which allows to
reduce the error on the estimate of the patient respiratory parameters when uslng
pressure and flow signals at the ventilator side instead of the patient side. The
proposed algorithm is based on a simplified model of the ventilator-patient
circuit, which incorporates the tubing compliance (C,,,he) and neglects the
pressure losses along the tubes du
Keywords
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