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Heart rate correction system and methods for the detection of cardiac events

ActiveUS20110040199A1Strong specificityEliminate high frequency noiseElectrocardiographySensorsBlood vessel spasmAcute ischemia
A device for detecting a cardiac event is disclosed. Detection of an event is based on a test applied to a parameter whose value varies according to heart rate. Both the parameter value and heart rate (RR interval) are filtered with an exponential average filter. From these filtered values, the average change in the parameter and the RR interval are also computed with an exponential average filter. Before computing the average change in the parameter, large changes in the parameter over short times, which may be caused by body position shifts, are attenuated are removed, so that the average change represents an average of small/smooth changes in the parameter's value that are characteristic of acute ischemia, one of the cardiac events that may be detected. The test to detect the cardiac event depends on the heart rate, the difference between the parameter's value and its upper and lower normal values, and its average change over time, adjusted for heart rate changes. The upper and lower normal parameter values as a function of heart rate are determined from long term stored data of the filtered RR values and parameter values. Hysteeresis related data and transitory deviations from normal (e.g. vasospasm related data) are excluded from the computation of normal upper and lower parameter bounds.
Owner:ANGEL MEDICAL SYST

Preparation method of reagent board for rapidly detecting aflatoxin B1

The invention discloses a preparation method of a reagent board for rapidly detecting aflatoxin B1, belonging to the field of mycotoxin detection and particularly relating to a preparation method of a reagent board for rapidly detecting aflatoxin B1 in grains and edible oil. The reagent board comprises an upper plastic template, a lower plastic template and a back lining; a sample pad, a colloidal gold combining pad, a nitrocellulose membrane and a water sucking pad are sequentially and tightly attached on the back lining; a detection line and a quality control line are sequentially sprayed on the nitrocellulose membrane in the direction of from the sample pad to the water sucking pad, and a reaction result can be represented by using a color visible to the unaided eye. The reagent board can be used for performing semi-quantitative and intuitive detection, the whole operation process only takes 40 minutes, no any expensive experimental device is needed for assistance, thereby the invention is good for sample screening on a large scale and suitable for industry and business departments, inspection and quarantine organizations and grain and oil production and processing enterprises to carry out rapid detection on the aflatoxin in the grains and the edible oil on a large scale.
Owner:杭州南开日新生物技术有限公司
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