IABP Blood Pressure Waveform Segmentation for Unassisted Values
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Solution Overview
Problem
During the use of intra-aortic balloon pumping (IABP), existing biological information monitors display balloon-assisted blood pressure values, making it difficult for doctors to accurately evaluate treatment effects and determine whether to wean from the IABP, as they cannot distinguish between unassisted and assisted blood pressure values.
Innovation Solution
A biological information measuring apparatus that includes an electrocardiogram measuring unit, a blood pressure waveform measuring unit, and a heartbeat blood pressure calculating unit, which detects cardiac cycles and calculates unassisted and assisted blood pressure values by analyzing ECG and blood pressure waveforms, allowing for the separation of systolic, diastolic, and augmentation pressures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If invasive blood pressure measurement is performed during IABP use, then blood pressure values can be obtained, but the values displayed are balloon-assisted values that do not reflect the heart's true blood pressure
Solution Approach 1:
The patent segments the blood pressure waveform into distinct components: the first peak represents unassisted systolic pressure from the heart, while the second peak represents assisted pressure from the IABP balloon. By separating and independently measuring these components, the system provides both unassisted and assisted blood pressure values, resolving the contradiction between obtaining measurable values and preserving information about true cardiac function.
2Productivity
If standard blood pressure monitoring is used during IABP, then continuous pressure values are available, but doctors cannot evaluate treatment effects or determine weaning timing
Solution Approach 1:
The patent introduces a specialized blood pressure measuring apparatus that acts as an intermediary between the IABP system and the clinician. This apparatus processes the complex balloon-assisted waveform and extracts meaningful clinical parameters including unassisted systolic/diastolic pressure, augmentation pressure, and pressure difference. These processed values serve as intermediaries that directly enable treatment effect evaluation and weaning decisions.
3Reliability
If balloon-assisted blood pressure values are displayed, then continuous monitoring is maintained, but the degree of IABP assistance cannot be determined
Solution Approach 1:
The patent dynamically adapts the monitoring system to accommodate the dual-waveform nature of IABP. The system automatically identifies and tracks both the first peak (unassisted) and second peak (assisted) in real-time, continuously calculating derived parameters such as augmentation pressure and pressure difference. This dynamic processing maintains continuous monitoring reliability while simultaneously providing information about the degree of assistance.
Data Source
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AI summary
A biological information measuring apparatus and a biological information measuring method are provided. The biological information measuring apparatus includes a pulsation information detecting unit configured to detect heartbeat information relating to a heartbeat of a subject, a blood pressure waveform measuring unit configured to measure a blood pressure waveform of the subject in an invasive manner, and a calculating unit configured to detect a cardiac cycle from the heartbeat information and to calculate, based on a detection of a maximal blood pressure value of the blood pressure waveform in the cardiac cycle, at least one of a systolic pressure of the subject, an end-diastolic pressure of the subject, an augmentation pressure of an IABP (intra-aortic balloon pumping), a systolic pressure assisted by the IABP and an end-diastolic pressure assisted by the IABP