Methods and devices for displaying trend and variability in a physiological dataset
First Claim
Patent Images
1. A method of displaying trends and variability in a physiological dataset, comprising, on a processor:
- obtaining the physiological dataset;
applying a smoothing algorithm to the physiological dataset to obtain a trend of the physiological dataset;
applying a variability algorithm to the physiological dataset to obtain the variability of the physiological dataset;
outputting a real-time graph of the trend of the physiological dataset;
outputting a real-time graph of the variability of the physiological dataset overlaid on the graph of the trend of the physiological dataset; and
triggering at least one of an audible or visual alarm upon a predetermined condition in the variability or trend of the physiological dataset being met whereas the predetermined condition is based on at least one of;
(1) a ratio between variability and trend values within a time window, (2) a difference between a maximum and a minimum within a time window, (3) a value of the trend within a time window, (4) a change in the trend values from one window to a next window, or (5) a change in a difference between maximum and minimum within a time window from one window to the next window.
1 Assignment
0 Petitions
Accused Products
Abstract
Embodiments of the invention are directed to methods and devices for displaying trends and variability in a physiological dataset. The method comprises obtaining the physiological dataset, applying a smoothing algorithm to the physiological dataset to obtain a trend of the physiological dataset, applying a variability algorithm to the physiological dataset to obtain the variability of the physiological dataset, outputting a graph of the trend of the physiological dataset, and outputting a graph of the variability of the physiological dataset.
61 Citations
23 Claims
-
1. A method of displaying trends and variability in a physiological dataset, comprising, on a processor:
-
obtaining the physiological dataset; applying a smoothing algorithm to the physiological dataset to obtain a trend of the physiological dataset; applying a variability algorithm to the physiological dataset to obtain the variability of the physiological dataset; outputting a real-time graph of the trend of the physiological dataset; outputting a real-time graph of the variability of the physiological dataset overlaid on the graph of the trend of the physiological dataset; and triggering at least one of an audible or visual alarm upon a predetermined condition in the variability or trend of the physiological dataset being met whereas the predetermined condition is based on at least one of;
(1) a ratio between variability and trend values within a time window, (2) a difference between a maximum and a minimum within a time window, (3) a value of the trend within a time window, (4) a change in the trend values from one window to a next window, or (5) a change in a difference between maximum and minimum within a time window from one window to the next window. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A device comprising:
-
a transthoracic impedance measurement device to obtain a physiological dataset; a processor receiving the physiological dataset from the measurement device, and adapted to; apply a smoothing algorithm to the physiological dataset to obtain a trend of the physiological dataset; and apply a variability algorithm to the physiological dataset to obtain the variability of the physiological dataset; an output device coupled to the processor and adapted to; output a real-time graph of the trend of the physiological dataset; and output a real-time graph of the variability of the physiological dataset overlaid on the graph of the trend of the physiological dataset; and at least one of an audible or visual alarm triggered upon a predetermined condition in the variability or trend of the physiological dataset being met whereas the predetermined condition is based on at least one of;
(1) a ratio between variability and trend values within a time window, (2) a difference between a maximum and a minimum within a time window, (3) a value of the trend within a time window, (4) a change in the trend values from one window to a next window, or (5) a change in a difference between maximum and minimum within a time window from one window to the next window.
-
-
13. A system for displaying trends and variability in a physiological dataset, comprising:
-
a patient monitoring device; at least one sensor coupled to the patient monitoring device; a processor contained within the patient monitoring device and receiving patient data from the at least on sensor; a screen contained within the patient monitoring device and receiving display information from the processor; and at least one of an audible or visual alarm triggered upon a predetermined condition in the variability or trend of the physiological dataset being met whereas the predetermined condition is based on at least one of;
(1) a ratio between variability and trend values within a time window, (2) a difference between a maximum and a minimum within a time window, (3) a value of the trend within a time window, (4) a change in the trend values from one window to a next window, or (5) a change in a difference between maximum and minimum within a time window from one window to the next window;wherein the processor; obtains the physiological dataset from the at least one sensor; applies a smoothing algorithm to the physiological dataset to obtain a trend of the physiological dataset; applies a variability algorithm to the physiological dataset to obtain a variability of the physiological dataset; outputs a real-time graph of the trend of the physiological dataset to the screen; and outputs a real-time graph of the variability of the physiological dataset to the screen overlaid on the graph of the trend of the physiological dataset. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
Specification