Abstract: A system and method are provided for prompting blood pressure-related calibrations. The method relies on statistical hypothesis tests over a current measurement and an accumulated set of calibration points to determine whether the benefit of calibration, in terms of calibration diversity, outweighs the cost to the patient. The algorithm uses statistical methods to predict calibration effect without actually performing the calibration, hence, reducing the calibration ‘cost’ to the patient and increasing the diversity of calibration points and thereby improving PWV-BP transform quality. The method is applicable to both manual and automatic calibration modes.

Abstract: A system and method is provided for deriving a pulse wave velocity-blood pressure (PWV-BP) transform. The method provides a general population PWV-BP transform comprising an average, population correlation of PWV measurements to BP measurements, where the selected average population shares common characteristics with a selected individual. The personal PWV-BP transform is based upon PWV and BP measurements for the first individual. If the personal PWV-BP transform is determined to be invalid, the general population PWV-BP is used to correlate the current PWV measurement for the first individual, to an estimated BP value for the first individual. The method modifies the general population PWV-BP transform using the at least a first PWV and BP measurement, and updates the general population PWV-BP transform. If a Sufficient number of simultaneous PWV and BP measurements are taken, and determined to be statistically valid, a personal PWV-BP transform can be established.

Abstract: A system and method are provided for using demographic data to derive a PWV-BP transform. The method provides a PWV measurement device with a non-transitory memory, processor, and a calibration application for supplying pseudo-calibrated PWV values. The method loads into the memory a first database of information cross-referencing age compared to central-aortic PWV-BP transforms, a second database of information cross-referencing age and gender compared to systolic and diastolic blood pressure, and a third database of information cross-referencing age as compared to whole-arm PWV. Whole-arm PWV measures a distance between a superasternal notch and index finger, divided by a transit time of an arterial pulse from to heart to the index finger tip. After accepting age and gender data from a first user, the calibration application interpolates the information from the first, second, and third databases, and derives a pseudo-calibrated whole-arm PWV-BP transform for the first user.