Clinical Research Directory

Empirical Meropenem Dosing in Critically Ill Patients: Early Assessment of Plasma Exposure and Minimum Inhibitory Concentration Targets

The goal of this prospective cohort study is to characterize meropenem exposure in critically ill adult patients receiving empiric antibiotic treatment in the intensive care unit (ICU). Empiric treatment refers to the administration of antibiotics before the causative microorganism and its antimicrobial susceptibility profile are known. In clinical practice, meropenem is commonly administered using different dosing strategies, including 1 g or 2 g doses given as either a 30-minute or a 3-hour infusion. The minimum inhibitory concentration (MIC) is the lowest concentration of an antibiotic required to inhibit bacterial growth and is used as a reference value to evaluate antibiotic exposure. The main questions it aims to answer are: Do meropenem plasma concentrations differ between patients receiving 1 g and those receiving 2 g, administered as either a 30-minute or a 3-hour infusion during the first 48 hours of empirical treatment in critically ill patients? Does the duration of time above the theoretical MIC of 2 mg/L differ between patients receiving meropenem 1 g and those receiving 2 g, administered as either a 30-minute or a 3-hour infusion during the first 48 hours of empirical treatment in critically ill patients? Researchers will compare different meropenem dosing regimens (1 g versus 2 g administered as a 30-minute or a 3-hour infusion) to determine which strategy provides a longer duration of plasma concentrations above the theoretical MIC of 2 mg/L. Participants will: Receive meropenem as part of their standard clinical care. Have blood samples collected during the first 48 hours of treatment to measure meropenem plasma concentrations. Have pharmacokinetic/pharmacodynamic parameters evaluated, including the percentage of time that meropenem concentrations remain above the theoretical target MIC. An exploratory objective of the study is to describe 28-day mortality and intensive care unit length of stay according to meropenem dose group.

Efficacy and Safety of Eleveld PK/PD Model-based Dosing During General Anesthesia

The goal of this randomized, controlled clinical trial is to evaluate the efficacy, safety, and recovery profile of an individualized, Eleveld pharmacokinetic/pharmacodynamic model-guided dosing strategy for remimazolam in adult patients undergoing elective non-cardiac surgery under general anesthesia. The main questions it aims to answer are: Does Eleveld model-guided customized dosing significantly reduce the eye-opening time at the end of surgery compared to standard weight-based dosing? Can the Eleveld model-guided approach prevent relative drug accumulation and delayed emergence while maintaining an adequate depth of anesthesia and comparable hemodynamic stability? Researchers will compare the Experimental Group (Eleveld model-guided dosing) to the Control Group (Standard weight-based label dosing) to see if preemptive dose optimization based on individual patient covariates effectively reduces the total drug consumption, frequency of rescue flumazenil administration, and emergence time. Participants will: * Be randomly assigned to receive remimazolam for the induction and maintenance of general anesthesia according to either the Eleveld model-guided customized regimen or the standard weight-based regimen. * Have their depth of anesthesia continuously monitored using a Bispectral Index (BIS) sensor. * Be assessed for the primary outcome (time to eye-opening upon verbal command after discontinuation of anesthetics) and secondary outcomes, including total drug consumption, hemodynamic stability, and postoperative complications (e.g., re-sedation, delirium, PONV).

Comparative Clinical Trial of Pharmacokinetics and Pharmacodynamics of Human Insulin Injection

A study of Clinical Trial Comparing Pharmacokinetics and Pharmacodynamics of Human Insulin Injection,in Wuhan Pulmonary Hospital (Wuhan Tuberculosis Prevention and Control Institute).To compare the pharmacokinetic and pharmacodynamics properties of a single subcutaneous dose of the human insulin injection (USLIN®R, Zhuhai United Laboratories (Zhongshan) Co., Ltd.) with the reference product (Novolin®R, Novo Nordisk Inc.) in healthy male subjects,and to evaluate the safety, tolerability, and immunogenicity of the test formulation versus the reference formulation in healthy male subjects.This single-center, randomized, double-blind, two-formulation, single-dose, two-period crossover study will enroll 32 healthy male subjects randomized 1:1 into two sequence groups (A/B, group A is administered in the sequence of T-R, while group B is in R-T). To evaluate the pharmacokinetic and pharmacodynamic properties of the test preparation and the control preparation in healthy male subjects. Each subject will receive single doses of both test and reference formulations across two periods (with ≥14-day washout), following the predefined sequence allocation table. After completing period 2 pharmacokinetic blood sampling, subjects will administer assigned insulin TID for two consecutive days to assess test-reference immunogenicity differences.

Vancomycin Dose Optimization in Obesity

The goal of this clinical trial is to learn how to optimize vancomycin dosing in obese adults based on weight and kidney function. It will also assess the safety of different vancomycin dosing strategies. The main questions it aims to answer are: Does dosing vancomycin based on kidney function provide better drug exposure than dosing based on weight? What medical or safety issues arise when vancomycin is dosed according to weight versus kidney function? Participants will be randomized into two groups. One group will receive vancomycin doses based on their weight, while the other will receive doses based on their kidney function. Participants will: Receive a single dose of vancomycin based on either their weight or kidney function after pretreatment with antihistamines Provide blood and urine samples at specific times for pharmacokinetic analysis Undergo body composition measurements using DEXA scans and other methods Visit the clinic for physical exams, medical history, and laboratory tests

Pharmacometrics Analysis of Rivaroxaban in Chinese Children Aged Over 2 Years

Based on an established Kawasaki disease cohort database, this prospective, single-center, single-arm, observational study will collect clinical data from children aged 2 years and older with giant coronary artery aneurysms after Kawasaki disease who received rivaroxaban treatment. Rivaroxaban plasma concentrations, anti-factor Xa activity levels, and genetic polymorphisms will be measured and analyzed to support the population pharmacokinetic/pharmacodynamic analysis