115 results about "Blood pressure change" patented technology

A cardiac-activity based prediction of a rapid drop in a patient's blood pressure during extracorporeal blood treatment is disclosed. A proposed alarm apparatus includes a primary beat morphology analysis unit bank of secondary analysis units and an alarm generating unit. The primary beat morphology analysis unit discriminates heart beats in a received basic electrocardiogram signal, classifies each beat into one out of at least two different beat categories, and associates each segment of the signal with relevant event-type data. The event-type data and the basic electrocardiogram signal together form an enhanced electrocardiogram signal, based upon which the primary beat morphology analysis unit determines whether one or more secondary signal analyses should be performed. Depending on the enhanced electrocardiogram signal's properties, the bank of secondary analysis units performs none, one or more of up to at least two different types of secondary analyses, and for each analysis performed produces a respective test signal. The alarm generating unit receives the test signals, and triggers an alarm signal indicative of an estimated rapid blood pressure decrease, if at least one alarm criterion is fulfilled.

Determining physiological life signs, with a sensor that is in contact with the surface of a patient's skin at point proximate an artery, and measuring arterial blood vessel displacement and / or blood pressure changes. A data stream of measurements of is collected and a set of parameters from the collected data, a number of physiological life signs parameters, is extracted from the data. The physiological life signs that can be extracted include heart rate, breathing rate, systolic blood pressure, and diastolic blood pressure.

The invention relates to cardiac-activity based prediction of a rapid drop in a patient's blood pressure during hemodialysis. A proposed alarm apparatus includes an input interface, primary and secondary analysis units and an alarm-generating unit. An electrocardiogram signal (HECG) of the patient is received via the input interface by the primary analysis unit, which in response thereto produces a heart-rate-variability signal (PHRV). The secondary analysis unit determines an intensity of ectopic beats (PEBC) based on the electrocardiogram signal (HECG). The alarm-generating unit investigates whether the intensity of ectopic beats (PEBC) is relatively low or relatively high. In case of a relatively low intensity, the unit triggers an alarm signal (α) indicative of an estimated rapid blood pressure decrease if the heart-rate-variability signal (PHRV) fulfills a first alarm criterion. In case of a relatively high intensity, however, the unit triggers the alarm signal (α) if the intensity of the ectopic beats (PEBC) fulfills a second alarm criterion.

A blood pressure measurement apparatus for measuring blood pressure in a predetermined period includes a blood pressure measuring unit for measuring the blood pressure of a subject, an information acquiring unit for acquiring information that is related to variation in blood pressure and changes in a time-series in the predetermined period, a determining unit for determining whether or not the information acquired by the information acquiring unit satisfies a predetermined condition, and a trigger output unit for, in a case where the determining unit determines that the predetermined condition is satisfied, causing the blood pressure measuring unit to start and execute blood pressure measurement. The predetermined condition is expressed as a function of time that varies and is measured in the predetermined period.