Abstract: There is provided a device and method of filtering outliers from physiological values. The method comprises: (a) populating a window with n physiological values taken, in sequence, from a sequence of physiological values, wherein n is a positive integer; (b) determining whether the variability in the physiological values within the window is less than a predetermined threshold; (c) responsive to the variability in the physiological values within the window being less than a predetermined threshold, determining that the window comprises no outliers, and/or responsive to the variability in the physiological values within the window not being less than a predetermined threshold, determining that the window comprises at least one outlier.

Abstract: There is provided a device and method of filtering outliers from physiological values. The method comprises: (a) populating a window with n physiological values taken, in sequence, from a sequence of physiological values, wherein n is a positive integer; (b) determining whether the variability in the physiological values within the window is less than a predetermined threshold; (c) responsive to the variability in the physiological values within the window being less than a predetermined threshold, determining that the window comprises no outliers, and/or responsive to the variability in the physiological values within the window not being less than a predetermined threshold, determining that the window comprises at least one outlier.

Abstract: There is provided a device and method of filtering outliers from physiological values. The method comprises: (a) populating a window with n physiological values taken, in sequence, from a sequence of physiological values, wherein n is a positive integer; (b) determining whether the variability in the physiological values within the window is less than a predetermined threshold; (c) responsive to the variability in the physiological values within the window being less than a predetermined threshold, determining that the window comprises no outliers, and/or responsive to the variability in the physiological values within the window not being less than a predetermined threshold, determining that the window comprises at least one outlier.

Abstract: An apparatus and method for determining stroke volume. The apparatus receives an arterial pressure waveform and is arranged to correct a part of the pressure waveform that relates to a heart beat for an influence of an ectopic heart beat, of atrial fibrillation on the pressure waveform or of changes in the pressure waveform's baseline. The apparatus also comprising means arranged to calculate the stroke volume from the corrected waveform.

Abstract: A device and method for use in monitoring blood pressure. The device comprises a controller configured to monitor a first blood pressure measurement based on a first blood pressure signal. The controller is configured to initiate acquiring a second blood pressure measurement based on a second blood pressure signal if the first blood pressure measurement exceeds a predetermined threshold. The decision to initiate acquiring the second blood pressure measurement is based on only one blood pressure measurement.

Abstract: A device and method for use in monitoring blood pressure. The device comprises a controller configured to monitor a first blood pressure measurement based on a first blood pressure signal. The controller is configured to initiate acquiring a second blood pressure measurement based on a second blood pressure signal if the first blood pressure measurement exceeds a predetermined threshold. The decision to initiate acquiring the second blood pressure measurement is based on only one blood pressure measurement.

Abstract: A hemodynamic monitor including a processor incorporating software arranged to continuously analyze and process a blood pressure or arterial volume/plethysmographic signal obtained from the subject in order to derive a plurality of complementary parameters throughout the monitoring of the subject. The monitor also incorporates a display arranged to interact with the processor to display images representing the derived plurality of complementary parameters. The images include at least one image representing graphically at least one stress related hemodynamic parameter plotted against time and at least one image representing graphically at least one fluid responsiveness parameter plotted against time.

Abstract: A device and method for use in monitoring blood pressure. The device comprises a controller configured to monitor a first blood pressure measurement based on a first blood pressure signal. The controller is configured to initiate acquiring a second blood pressure measurement based on a second blood pressure signal if the first blood pressure measurement exceeds a predetermined threshold. The decision to initiate acquiring the second blood pressure measurement is based on only one blood pressure measurement.

Abstract: A device and method for use in monitoring blood pressure. The device comprises a controller configured to monitor a first blood pressure measurement based on a first blood pressure signal. The controller is configured to initiate acquiring a second blood pressure measurement based on a second blood pressure signal if the first blood pressure measurement exceeds a predetermined threshold. The decision to initiate acquiring the second blood pressure measurement is based on only one blood pressure measurement.

Abstract: A monitoring device arranged to display a level of consciousness and hemodynamic parameters of a patient for simultaneous viewing. A dependence of changes in the hemodynamic parameters of the patient on the level of consciousness of the patient may be more easily observed using the monitoring device. Correlations between the patient's level of consciousness and the patient's hemodynamic parameters may further be determined and displayed to aid clinicians in estimating any improvement in hemodynamic parameters that may be achieved through manipulation of the patient's level of consciousness, fluid status and drugs.

Abstract: A monitoring device arranged to display a level of consciousness and hemodynamic parameters of a patient for simultaneous viewing. A dependence of changes in the hemodynamic parameters of the patient on the level of consciousness of the patient may be more easily observed using the monitoring device. Correlations between the patient's level of consciousness and the patient's hemodynamic parameters may further be determined and displayed to aid clinicians in estimating any improvement in hemodynamic parameters that may be achieved through manipulation of the patient's level of consciousness, fluid status and drugs.

Abstract: An apparatus and method for determining stroke volume. The apparatus receives an arterial pressure waveform and is arranged to correct a part of the pressure waveform that relates to a heart beat for an influence of an ectopic heart beat, of atrial fibrillation on the pressure waveform or of changes in the pressure waveform's baseline. The apparatus also comprising means arranged to calculate the stroke volume from the corrected waveform.

Abstract: A monitoring device arranged to display a level of consciousness and hemodynamic parameters of a patient for simultaneous viewing. A dependence of changes in the hemodynamic parameters of the patient on the level of consciousness of the patient may be more easily observed using the monitoring device. Correlations between the patient's level of consciousness and the patient's hemodynamic parameters may further be determined and displayed to aid clinicians in estimating any improvement in hemodynamic parameters that may be achieved through manipulation of the patient's level of consciousness, fluid status and drugs.

Abstract: A hemodynamic monitor and corresponding method for determining the requirement for, and if required the nature or extent of, and for monitoring the response to, an intervention by a carer for a subject in order to improve the hydration level and hemodynamic status of the subject during a period or periods of hemodynamic instability includes, firstly, a processor. The processor incorporates software arranged to continuously analyse and process a blood pressure or arterial volume/plethysmographic signal obtained from the subject in order to derive a plurality of complementary parameters throughout the monitoring of the subject. The monitor also incorporates display means displaying images representing the derived plurality of complementary parameters. The images may include at least one image representing graphically at least one stress related hemodynamic parameter plotted against time to provide an immediate indication of a change in hemodynamic status and thus the requirement for an intervention.

Abstract: A hemodynamic monitor and corresponding method for determining the requirement for, and if required the nature or extent of, and for monitoring the response to, an intervention by a carer for a subject in order to improve the hydration level and hemodynamic status of the subject during a period or periods of hemodynamic instability includes, firstly, a processor. The processor incorporates software arranged to continuously analyse and process a blood pressure or arterial volume/plethysmographic signal obtained from the subject in order to derive a plurality of complementary parameters throughout the monitoring of the subject. The monitor also incorporates display means displaying images representing the derived plurality of complementary parameters. The images include at least one image representing graphically at least one stress related hemodynamic parameter plotted against time to provide an immediate indication of a change in hemodynamic status and thus the requirement for an intervention.

Abstract: A method of setting or adjusting a cardiac pacemaker in a patient diagnosed with cardiac asynchrony, which method comprises the steps of: i) implanting cardiac pacing wires into at least the right ventricle and the left ventricle of the heart of the patient, ii) continuously monitoring and recording the cardiac output, nominal stroke volume and/or arterial pressure of the patient on a beat-by-beat basis, iii) continuously monitoring and recording the respiratory cycle of the patient, and iv) adjusting the conduction delay between the electronic impulses to the cardiac pacing wires until a synchronization of respiratory changes with changes in the cardiac output, stroke volume or arterial pressure of the patient is obtained.

Abstract: A method for the measurement of post arteriolar pressure in a patient which is determined from information regarding the blood pressure (BP), systemic vascular resistance (R) and cardiac output (CO) by plotting the regression line for the equation BP=R×Q+c where c is the post arteriolar pressure, and determining the value of c from the regression line.

Abstract: A method for the measurement of post arteriolar pressure in a patient which is determined from information regarding the blood pressure (BP), systemic vascular resistance (R) and cardiac output (CO) by plotting the regression line for the equation BP=R×Q+c where c is the post arteriolar pressure, and determining the value of c from the regression line.

Abstract: A method for the measurement of cardiac output in a patient in which the arterial blood pressure waveform of a patient from a blood pressure monitoring device over a period of time is subjected to various transformations and corrections, including a Fourier analysis in order to obtain the modulus of the first harmonic. The nominal stroke volume is then determined from the first harmonic and data relating to the arterial blood pressure and heart rate. The nominal cardiac output is then obtained from the nominal stroke volume.

Abstract: A method for the measurement of cardiac output in a patient in which the arterial blood pressure waveform of a patient from a blood pressure monitoring device over a period of time is subjected to various transformations and corrections, including autocorrelation, whereby the pulsatility and heart rate of the patient are obtained. The nominal stroke volume is then calculated from the pulsatility and the nominal caridac output obtained by multiplying the stroke volume by the heart rate.