Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
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Conf Proc IEEE Eng Med Biol Soc · Jan 2007
EEG frequency progression during induction of anesthesia: from start of infusion to onset of burst suppression pattern.
The anesthetic infusion with propofol influences EEG activity rather smoothly by changing the amplitude activity in different frequency bands. This results in a frequency progression pattern (FPP) which can be related to the depth of anesthesia. ⋯ The results reveal the underlying FPP and how the onset of the BSP is related to it. The proposed method offers potential for the development of automatic assessment systems for the depth of anesthesia.
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Conf Proc IEEE Eng Med Biol Soc · Jan 2007
Screening device for identification of patients with paroxysmal atrial fibrillation to prevent ischemic strokes.
The most frequently occurring cardiac arrhythmia in the adulthood is atrial fibrillation. In Germany, the number of sick people is estimated at 800,000. Patients who suffer from atrial fibrillation often do not sense any symptoms of the illness. ⋯ These persons must be recognized, because of their increased stroke risk in order to be able to attend it. In this work, the chest strap CorBelt, developed by the company Corscience GmbH&Co. KG, is equipped with an algorithm for the recognition of atrial fibrillation with the aid of heart rate variability.
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Conf Proc IEEE Eng Med Biol Soc · Jan 2007
The role of intracarotid cold saline infusion on a theoretical brain model incorporating the circle of willis and cerebral venous return.
This study describes a theoretical model of brain cooling by intracarotid cold saline infusion which takes into account redistribution of cold perfusate through the circle of Willis (CoW) and cold venous return (VR) from the head. This model is developed in spherical coordinates on a four tissue layer hemispherical geometrical configuration. Temperature evolution is modeled according to the Pennes bioheat transfer equation. ⋯ The temperature effect in the CoW model was present but less robust in the ipsilateral anterior region, as final temperature was 32 degrees C. However, cooling was also achieved in contralateral and posterior brain regions. This model continues to demonstrate the feasibility of intracarotid cold saline infusion for ischemic stroke therapy.
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Conf Proc IEEE Eng Med Biol Soc · Jan 2007
Clinical TrialModeling anesthetic drugs' pharmacodynamic interaction on the bispectral index of the EEG: the influence of heart rate.
The effect of drugs' interaction on the brain signal Bispectral Index (BIS) is of great importance for an anesthesia control drug infusion system. In this study, the objective was to inspect the influence of patient's heart rate on the effect of the drugs on BIS. With this goal, the patient's heart rate was incorporated in an drug interaction model. ⋯ The results showed that the model with time changing parameters incorporating patient's heart rate has a better performance than a non adjusted model. Three clusters of models were also identified using the fuzzy c-means algorithm. These clusters will help to distinguish between different patients' dynamics.
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The aim of the paper is to inform about the requirements laid on education in the fields of Biomedical Technology and Biomedical Engineering in the connection with legal provisions on non-medical health service occupations in the Czech Republic and its compliance with the working documents on harmonization of biomedical engineering education in Europe (BIOMEDEA project). The legal provisions define completely new position of technical personnel in the health care service system. We show how the legal regulations and European recommendations are reflected in Master study at the Czech Technical University in Prague, Faculty of Electrical Engineering.