Cefepime » Empiric » fAUC/MIC

Cefepime » Empiric therapy » fAUC to MIC ratio

simulate_cefepime_mc_emp_fauc_mic_ratio(
  PATID,
  AGE,
  HEIGHT,
  WEIGHT,
  GENDER,
  CREATININE,
  MODEL,
  MIC,
  AUCPERMIC,
  LOADINGDOSE,
  CRCLCAP,
  REGIMENS
)

Arguments

PATID	Patient Identifier. User-provided free text (such as patient id, name or alias) to identify related simulations. Must be provided as string.
AGE	Age. Age of the patient in years. Must be provided as numeric (min. 18, max. 120 year).
HEIGHT	Height. Height of the patient. Must be provided as numeric (min. 100, max. 250 cm).
WEIGHT	Weight. Actual body weight of the patient. Must be provided as numeric (min. 20, max. 500 kg).
GENDER	Sex. Patient's sex for clinical decision-making. Must be provided as string ('Male' or 'Female').
CREATININE	Creatinine. Serum creatinine. Must be provided as numeric (min. 0.01, max. 15 mg/dL).
MODEL	Model for population of interest. Pharmacokinetic model to be used for specific patient type during simulations. Must be provided as string ('Nicasio et al. (2009) - ICU' or 'Tam et al. (2003) - General ward').
MIC	MIC. Minimum Inhibitory Concentration (MIC). Must be provided as numeric (min. 0.01, max. 1024 mg/L).
AUCPERMIC	AUC to MIC ratio target. The PK/PD target can be provided as 24 hour area under the concentration-time curve to minimum inhibitory concentration ratio (AUC/MIC). Must be provided as numeric (min. 10, max. 2000 ).
LOADINGDOSE	Loading dose. Loading dose is desired or not. Must be provided as string ('No' or 'Yes').
CRCLCAP	Capping Creatinine Clearance. Whether to use capping for creatinine clearance. Must be provided as string ('No cap', '120 ml/min', '130 ml/min', '140 ml/min' or '150 ml/min').
REGIMENS	Dosing Regimens. List of dosing regimens to be used in simulating target attainment, from which the dosing regimen with the smallest absolute difference from the desired target will be automatically selected. Must be provided as list of 1-20 'REGIMEN' values. Use the regimen helper function to define the REGIMEN values.

Details

Drug: Cefepime

Method: Simulate concentrations for multiple dosing regimens and select the optimal one, with regard to the target pharmacodynamic index.

PK/PD target: 24 hour area under the free concentration-time curve to minimum inhibitory concentration ratio.

References

• Nicasio et al. (2009): Population Pharmacokinetics of High-Dose, Prolonged-Infusion Cefepime in Adult Critically Ill Patients with Ventilator-Associated Pneumonia. In. Antimicrobial Agents and Chemotherapy. https://pubmed.ncbi.nlm.nih.gov/19188394/

• Tam et al. (2003): Pharmacokinetics and Pharmacodynamics of Cefepime in Patients with Various Degrees of Renal Function. In. Antimicrobial Agents and Chemotherapy. https://pubmed.ncbi.nlm.nih.gov/12760858/

Examples

if (FALSE) {
simulate_cefepime_mc_emp_fauc_mic_ratio(PATID = "Anonymous", 
    AGE = 65, HEIGHT = 175, 
    WEIGHT = 75, GENDER = "Male", 
    CREATININE = 0.876056338, 
    MODEL = "Nicasio et al. (2009) - ICU", 
    MIC = 1, AUCPERMIC = 400, 
    LOADINGDOSE = "No", 
    CRCLCAP = "No cap", 
    REGIMENS = list(list(
        DOSE = 750, INTERVAL = 8, 
        TINF = 1, set = "REGIMEN"), 
        list(DOSE = 750, 
            INTERVAL = 12, 
            TINF = 1, 
            set = "REGIMEN"), 
        list(DOSE = 750, 
            INTERVAL = 24, 
            TINF = 1, 
            set = "REGIMEN"), 
        list(DOSE = 1000, 
            INTERVAL = 8, 
            TINF = 1, 
            set = "REGIMEN"), 
        list(DOSE = 1000, 
            INTERVAL = 12, 
            TINF = 1, 
            set = "REGIMEN"), 
        list(DOSE = 1000, 
            INTERVAL = 24, 
            TINF = 1, 
            set = "REGIMEN"), 
        list(DOSE = 1250, 
            INTERVAL = 8, 
            TINF = 1.25, 
            set = "REGIMEN"), 
        list(DOSE = 1250, 
            INTERVAL = 12, 
            TINF = 1.25, 
            set = "REGIMEN"), 
        list(DOSE = 1250, 
            INTERVAL = 24, 
            TINF = 1.25, 
            set = "REGIMEN"), 
        list(DOSE = 1500, 
            INTERVAL = 8, 
            TINF = 1.5, 
            set = "REGIMEN"), 
        list(DOSE = 1500, 
            INTERVAL = 12, 
            TINF = 1.5, 
            set = "REGIMEN"), 
        list(DOSE = 1500, 
            INTERVAL = 24, 
            TINF = 1.5, 
            set = "REGIMEN"), 
        list(DOSE = 1750, 
            INTERVAL = 8, 
            TINF = 1.75, 
            set = "REGIMEN"), 
        list(DOSE = 1750, 
            INTERVAL = 12, 
            TINF = 1.75, 
            set = "REGIMEN"), 
        list(DOSE = 1750, 
            INTERVAL = 24, 
            TINF = 1.75, 
            set = "REGIMEN")))
}