Peritoneal Dialysis Duration Estimation Using Phase-Segmented Delay Values
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Solution Overview
Problem
Current peritoneal dialysis methods lack a reliable method for estimating the total treatment duration, affecting planning security for caregivers and patients due to uncertainties in patient-specific and catheter-related factors.
Innovation Solution
A device estimates the treatment duration by calculating an ideal duration and adjusting it with patient-specific and catheter performance-based delay values, considering factors like flow rates, ultrafiltration volumes, and catheter performance to account for variations in treatment phases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the treatment duration is calculated based on ideal conditions only, then the calculation is simple and quick, but the reliability of the duration estimate is poor due to patient-specific and catheter-related variations
Solution Approach 1:
The treatment duration is segmented into multiple distinct phases (initial drainage, cycles with run-in and run-out times, dwell time, final drainage), with each phase calculated separately using specific formulas that account for patient-specific parameters and catheter performance, thereby improving overall estimate reliability while maintaining manageable complexity
Solution Approach 2:
The system incorporates feedback mechanisms by using actual treatment data (such as actual drainage volumes and times) to adjust and refine the duration estimates for subsequent treatments, continuously improving reliability based on observed performance patterns
2Measurement precision
If patient-specific parameters and catheter performance factors are incorporated into the duration calculation, then the estimation accuracy is improved, but the calculation complexity increases
Solution Approach 1:
Different levels of detail and complexity are applied to different phases of the treatment calculation. For example, the run-in and run-out times use specific formulas incorporating patient weight and catheter characteristics, while the dwell time uses a fixed predetermined value, allowing precise estimation where needed without unnecessarily complicating the entire calculation
Solution Approach 2:
The system dynamically adjusts calculation parameters based on patient-specific data (such as weight, abdominal cavity volume) and catheter characteristics (such as outflow rate, performance factors). These parameter changes enable precise, individualized duration estimates while the modular structure keeps the overall system complexity manageable
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a more accurate estimation of treatment duration, enabling better planning and management of peritoneal dialysis sessions by accounting for individual patient and catheter performance variations, thus improving planning security and treatment efficiency.
Implementation Method 1
This solution absorbs waste products from the patient's blood via the peritoneum, which acts as a semipermeable membrane
Implementation Method 2
Additionally, due to the glucose in the dialysis solution and the resulting osmotic pressure, water is removed from the patient
Data Source
AI summary
The present invention relates to a method for estimating the duration of a peritoneal dialysis treatment, wherein the estimation of the duration of treatment is carried out on the basis of an ideal duration of treatment and the ideal duration of treatment is increased by one or more delay values, said delay values being dependent on one or more device-specific and/or patient-specific and/or method-specific parameters.