The investigator's purpose is to study the population pharmacokinetics of commonly used antimicrobial agents in children of bacterial meningitis with augmented renal clearance and assess dosage individualization feasibility.

The investigator's purpose is to study the population pharmacokinetics of meropenem, vancomycin, ceftazidime, ceftriaxone, ceftizoxime and linezolid in children of bacterial meningitis with augmented renal clearance and assess dosage individualization feasibility. In this study, the investigator will detect drug concentration in both plasma and cerebrospinal fluid to construct population pharmacokinetics.

Inclusion Criteria:

• Children have been diagnosed with bacterial meningitis with augmented renal clearance (eGFR ≥ 160 mL/(min*1.73m2));
• Age: 2 months-18 years;
• Meropenem, vancomycin, ceftazidime, ceftriaxone, ceftizoxime and/ or linezolid used as part of regular treatment;
• Meropenem, vancomycin, ceftazidime, ceftriaxone, ceftizoxime and linezolid was administered intravenously.

Exclusion Criteria:

• Patients who die within the treatment cycle;
• Severe congenital malformation;
• Receive other systemic experimental drug therapy;
• Other factors that the researchers consider unsuitable for inclusion.

Children (2 months-18 years) of bacterial meningitis with augmented renal clearance