Viertiö-Oja
Hanna Viertiö-Oja, Espoo FI
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20130220323 | METHOD, ARRANGEMENT AND COMPUTER PROGRAM PRODUCT FOR RESPIRATORY GAS MONITORING OF VENTILATED PATIENTS - A method, device, and computer program product for improving accuracy of a respiratory gas measurement from a subject ventilated at a predetermined respiration rate through a ventilator. A respiratory gas measurement value is acquired within a first expiration period of the subject, thereby to obtain a first measurement value. The ventilator is paused for a pause period within a second expiration period of the subject and a respiratory gas measurement is performed within the pause period, thereby to obtain a second measurement value. A correction factor is then determined based on the first measurement value and the second measurement value and the correction factor is employed to correct subsequent respiratory gas measurement values obtained from the subject at the predetermined respiration rate, thereby to improve the accuracy of the measurement. | 08-29-2013 |
Hanna E. Viertiö-Oja, Espoo FI
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20080317672 | DETECTION OF ANOMALIES IN MEASUREMENT OF LEVEL OF HYPNOSIS - The invention relates to detection of anomalies related to a measurement of the hypnotic level of a subject. In order to detect when a measure indicative of the hypnotic level of a subject is anomalous either due to a medical reason or due to an interference, the measure is monitored and state information indicative of the activity of the autonomous nervous system of the subject and drug effect information indicative of the hypnotic drug effect in the subject are employed to check whether the measure fulfills a predetermined consistency condition requiring that the measure changes consistently with at least one of the drug effect information and the state information. An anomaly, indicative of an abnormal change in the measure, is detected when the measure fails to fulfill the predetermined consistency condition. | 12-25-2008 |
20110087127 | MEASUREMENT FOR EEG REACTIVITY - The invention relates to a method and apparatus for assessing the reactivity observable in a certain physiological signal, especially the EEG signal, of a comatose subject. In order to obtain an objective and a reliable measure of the reactivity automatically and without the presence of a trained EEG specialist, a valid signal model is constructed for an EEG signal obtained from the subject. A time reference corresponding to a stimulus is applied and further signal data is obtained from the time series, the further signal data being subsequent to the time reference. By employing the further signal data, the method tests whether the signal model remains to be a valid signal model for the EEG signal also after the stimulus, and indicates, based on the test, whether reactivity is present in the physiological signal. | 04-14-2011 |
Hanna E. Viertiö-Oja, Espoo FI
Patent application number | Description | Published |
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20110087127 | MEASUREMENT FOR EEG REACTIVITY - The invention relates to a method and apparatus for assessing the reactivity observable in a certain physiological signal, especially the EEG signal, of a comatose subject. In order to obtain an objective and a reliable measure of the reactivity automatically and without the presence of a trained EEG specialist, a valid signal model is constructed for an EEG signal obtained from the subject. A time reference corresponding to a stimulus is applied and further signal data is obtained from the time series, the further signal data being subsequent to the time reference. By employing the further signal data, the method tests whether the signal model remains to be a valid signal model for the EEG signal also after the stimulus, and indicates, based on the test, whether reactivity is present in the physiological signal. | 04-14-2011 |
Hanna Elina Viertiö-Oja, Helsinki FI
Patent application number | Description | Published |
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20110108034 | METHOD AND SYSTEM FOR CONTROLLING A VENTILATOR - A method and system for controlling a ventilator. The method includes monitoring a central nervous system parameter and automatically adjusting a level of ventilatory support from a ventilator based on a value of the central nervous system parameter. | 05-12-2011 |
Hanna Elina Viertiö-Oja, Helsinki FI
Patent application number | Description | Published |
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20110108034 | METHOD AND SYSTEM FOR CONTROLLING A VENTILATOR - A method and system for controlling a ventilator. The method includes monitoring a central nervous system parameter and automatically adjusting a level of ventilatory support from a ventilator based on a value of the central nervous system parameter. | 05-12-2011 |