Patient monitoring system
A method of determining blood pressure measurements includes inflating a cuff, receiving an indication of pressure inside the cuff during inflation, determining a blood pressure based at least in part on the received indication, assigning a confidence level to the blood pressure, and determining whether the confidence level satisfies a threshold confidence level. Based at least on a determination that the confidence level satisfies a threshold confidence level, the method can include causing a display to display the blood pressure. Based at least on a determination that the confidence level does not satisfy a threshold confidence level, the method can include deflating the cuff, receiving an indication of pressure inside the cuff during deflation, determining another blood pressure, and causing a display to display a blood pressure.
1. A method of determining one or more blood pressure measurements, the method comprising:
inflating an inflatable cuff configured to encompass a limb of a monitored patient using a replaceable gas reservoir or a portable inflation system;
receiving a first data signal indicative of pressure inside the inflatable cuff during inflation;
determining a first blood pressure of the monitored patient during inflation based at least in part on the received first data signal;
assigning a confidence level, by a processor, to the first blood pressure;
determining, by the processor, whether the confidence level satisfies a threshold confidence level; and
based at least in part on a determination that the confidence level does not satisfy the threshold confidence level:
receiving a second data signal indicative of pressure inside the inflatable cuff during a deflation of the inflatable cuff,
determining a second blood pressure of the monitored patient based at least in part on the received second data signal, and
causing a display to display at least one of the first blood pressure or the second blood pressure.
2. The method of claim 1 , wherein said determining the first blood pressure comprises:
filtering the first data signal;
identifying a maximum magnitude of the filtered first data signal; and
associating a pressure of the inflatable cuff at the identified maximum magnitude with a first systolic pressure.
3. The method of claim 1 , wherein said determining the second blood pressure comprises:
filtering the second data signal;
identifying a maximum magnitude of the filtered second data signal during the deflation of the inflatable cuff, a maximum slope of the filtered second data signal prior to the maximum magnitude, and a maximum slope of the filtered second data signal following the maximum magnitude; and
associating a pressure of the inflatable cuff at the identified maximum slope of the filtered second signal prior to the maximum magnitude with a second systolic pressure.
4. The method of claim 1 , further comprising:
determining whether pressure within the replaceable gas reservoir satisfies a threshold pressure level; and
upon determining the replaceable gas reservoir does not satisfy the threshold pressure level, causing the display to display a notification.
5. The method of claim 1 , further comprising causing the display to display a waveform of at least one of the first data signal or the second data signal.
6. The method of claim 1 , further comprising determining the confidence level of the first blood pressure based on an amount and magnitude of noise observed in the first data signal.
7. The method of claim 1 , further comprising communicating with electronics of the replaceable gas reservoir.
8. The method of claim 7 , wherein the electronics indicate whether the replaceable gas reservoir is authorized.
9. The method of claim 7 , wherein the electronics associated with the gas reservoir indicate reservoir characteristics.
10. The method of claim 7 , wherein the electronics indicate usage of the replaceable gas reservoir.
11. The method of claim 10 , wherein updated data responsive to usage of the replaceable gas reservoir is written to the electronics of the replaceable gas reservoir.
12. A method of determining one or more blood pressure measurements, the method comprising:
inflating an inflatable cuff configured to encompass a limb of a monitored patient;
receiving a first data signal indicative of pressure inside the inflatable cuff during inflation;
determining a first blood pressure of the monitored patient based at least in part on the received first data signal;
assigning a confidence level, by a processor, to the first blood pressure;
determining, by the processor, whether the confidence level satisfies a threshold confidence level;
based at least in part on a determination that the confidence level satisfies the threshold confidence level:
determining not to determine another blood pressure during a deflation of the inflatable cuff, and
causing a display to display at least the first blood pressure; and
based at least in part on a determination that the confidence level does not satisfy the threshold confidence level:
determining a second blood pressure during the deflation of the inflatable cuff, and
causing a display to display at least one of the first blood pressure or the second blood pressure.
13. The method of claim 12 , further comprising:
based at least in part on the determination that the confidence level does not satisfy the threshold confidence level:
receiving a second data signal indicative of pressure inside the inflatable cuff during the deflation of the inflatable cuff;
determining the second blood pressure of the monitored patient based at least in part on the received second data signal.
14. The method of claim 12 , further comprising inflating the inflatable cuff using a replaceable gas reservoir or a portable inflation system.
15. The method of claim 14 , further comprising communicating with electronics of the replaceable gas reservoir.