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Customized and Optimized Treatment of Extended-Spectrum-Beta-Lactamase Bacteria for Individual

JSHS · 2022

Patients, Dr. Yangxiaolu (Will) Cao · Yicheng (Irene) Jiang Concord Academy, Concord, MA

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Overview

Antibiotic resistance renders antimicrobial drugs - which had hitherto rescued innumerable lives from fatal bacterial infections - futile. It is imperative to prevent further evolution of multi-drug tolerant bacteria in the most economical way possible. This paper discusses optimizing and customizing intravenous-drip therapies for patients infected with antibiotic-resistant bacteria, namely the Extended-Spectrum-Beta-Lactamase bacteria. Utilizing ordinary differential equations to model the system’s dynamic, efficiencies of four types of IV-drip pulse function treatments and the time it takes for each treatment to suppress the pathogen population were evaluated. Results revealed that a trapezoid pulse function intravenous delivery of antibiotics is most favorable. Subsequently, its parameters were randomized to identify optimal ranges of antibiotic regimen. Thereupon, efficiency of each randomized treatment was evaluated using a score matrix assessing the dosing length, dosing interval, maximum rate of antibiotic infusion, net consumption of antibiotics, and total number of treatments. Through radar charts and box plots, it was discovered that for more severely infected patients with higher initial population and growth rate, it is important to decrease the time interval and increase the time of maximum infusion rate - vice versa for mild infections. More specifically, for severe infections with high Beta-Lactamase secretion rate, the time interval and period for different rates of infusion are also key values to manipulate. Under all conditions, there is a limit value to the maximum infusion rate of high-scoring treatments. Additionally, compared to initial bacteria population density, growth rate and Bla production rate play more important roles in impacting efficacy.

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  • JSHS 2022 Category not listed

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Source: Junior Science and Humanities Symposium

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