Platelet-Rich Plasma Microbe Detection via Mass Spectrometry
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional blood cultures have low sensitivity in detecting blood-borne microbes in patients with sepsis, leading to inappropriate antibiotic selection and increased mortality, with detection rates ranging from 32% to 71% and often requiring high volumes of blood, which can be physiologically stressful for severely ill patients.
Innovation Solution
The method involves obtaining platelet-rich plasma (PRP) from a small sample of whole blood, incubating it at a temperature greater than room temperature for up to 5 days, and using mass spectrometric analysis to detect blood-borne microbes, which reduces contamination and false positives, and allows for specific antibiotic selection based on detected pathogens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional whole blood cultures are used to detect blood-borne microbes, then the detection can be performed with existing methods, but the sensitivity is low (32%-71%) and high volumes of blood are required
Solution Approach 1:
The invention segments the whole blood sample into different components, specifically using platelet-rich plasma (PRP) separated from other blood elements. This segmentation allows the detection method to focus on the most relevant component for microbe detection, improving sensitivity while requiring smaller overall blood volumes.
Solution Approach 2:
The invention extracts and isolates platelet-rich plasma from whole blood through centrifugation and separation processes. By taking out the specific PRP component that contains the target microbes and removing less relevant blood elements, the method achieves higher detection sensitivity with reduced blood volume requirements.
2Reliability
If traditional whole blood cultures are used, then the procedure is straightforward, but contamination and false positives increase
Solution Approach 1:
By extracting and isolating platelet-rich plasma from whole blood, the method removes sources of contamination present in other blood components. This extraction process eliminates red blood cells, white blood cells, and plasma proteins that could contribute to false positives, thereby improving reliability.
Solution Approach 2:
The invention applies local quality by creating a specialized culture environment optimized for detecting specific blood-borne microbes. The PRP-based culture system provides localized conditions (pH, nutrients, temperature) that are specifically suited for microbe detection while minimizing interference from other blood components.
3Measurement precision
If prompt antibiotic treatment is initiated without precise microbiologic information, then treatment can start immediately, but inappropriate antibiotic selection increases mortality fivefold
Solution Approach 1:
The invention performs preliminary action by using PRP incubation and detection methods that can identify microbes more rapidly than traditional whole blood cultures. This preliminary detection capability provides microbiologic information faster, enabling timely antibiotic selection without sacrificing precision.
Solution Approach 2:
The invention changes key parameters of the culture system, including incubation temperature (35-37°C), pH conditions, and nutrient composition, to optimize for rapid microbe growth and detection. These parameter changes accelerate the detection process while maintaining high precision through targeted PRP analysis.
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
This approach significantly increases the rate of true positive detection of blood-borne microbes, reduces the volume of blood needed, and enables more precise antibiotic selection, potentially lowering mortality and hospital stay durations while avoiding unnecessary antibiotic use.
Implementation Method 1
platelet aggregation, shape change, or other platelet function abnormality in response to a given bacterial suspension
Implementation Method 2
detecting the presence of one or more blood-borne microbes in the platelet poor plasma
Data Source
AI summary
Traditional methods of detecting blood-borne microbial species in patients suspected of sepsis can be relatively slow, lack sensitivity, and require large volumes of blood. The present invention relates to methods of detecting microbial species in platelet rich plasma, which can be done more rapidly, with greater sensitivity, and with smaller volumes of blood to ensure more prompt and reliable diagnosis and treatment. The present invention also relates to improved methods of antibiotic treatment for patients diagnosed with a microbial infection and improved methods of excluding the diagnosis of viral infection exhibiting symptoms similar to sepsis.