| 摘要 |
Systems, methods, and devices of the various embodiments enable continuous non-invasive monitoring of blood pressure with a minimum of interference. The various embodiments may provide a method for adaptation for the calibration for continuous measurements of blood pressure, wherein the measured quantity may be related to an arterial lumen or arterial cross sectional area comprising calibrating the conversion for incremental variations of arterial properties and absolute value adaptation by exploitation of the exponential decay during the diastole. In various embodiments, continuous calibration of a non-interfering blood pressure measurement device may be initiated based on a change in mean arterial pressure being greater than a threshold value, such as a pressure value associated with an actual measured distension of a patient's artery. |
| 主权项 |
1. A method for continuous calibration of a blood pressure measurement device, comprising:
determining, by a processor, whether a change in a measurement of an artery of a patient as measured by a non-interfering blood pressure measurement device and elevation of the non-interfering blood pressure measurement device occurred between two observation times; determining, by the processor, whether a change in pulse rate has occurred between the two observation times in response to determining that a change in a measurement of the artery as measured by the non-interfering blood pressure measurement device and elevation of the non-interfering blood pressure measurement device occurred between two observation times; determining, by the processor, an incremental variation between the two observation times in response to determining that no change in pulse rate occurred between the two observation times; determining, by the processor, a coefficient fitting an exponentially decaying function representing an exponential decay of a portion of a diastolic phase to diastolic parts of measured pulses between the two observation times; determining, by the processor, a current mean arterial pressure based at least in part on the exponentially decaying function and the incremental variation between the two observation times; determining, by the processor, whether a change in mean arterial pressure is greater than a threshold value based on a comparison of the determined current mean arterial pressure and a previously determined mean arterial pressure; and calibrating, by the processor, the non-interfering blood pressure measurement device in response to determining that the change in mean arterial pressure is greater than the threshold value. |
