Cystic Fibrosis Clinical Trial
Official title:
Pharmacokinetic and Pharmacodynamic Analysis of Ceftaroline in Children and Adolescents With Cystic Fibrosis
This is an open-label, single center, prospective study of patients with a diagnosis of cystic fibrosis (CF) and a history of methicillin-resistant Staphylococcus aureus (MRSA), also known as oxacillin-resistant Staphylococcus aureus (ORSA), being treated with intravenous ceftaroline. Patients will have intravenous ceftaroline dosed according to current recommendations based upon its approved usage in pediatric patients for community acquired pneumonia. The investigators will analyze pharmacokinetic (PK) and pharmacodynamic (PD) data using serum concentrations of ceftaroline measured at various time-points following infusion of ceftaroline to develop PK/PD guided dosing strategies of ceftaroline in pediatric CF patients that would be tailored to account for bacterial susceptibility and disease progression.
This is an open-label, single center, prospective study of patients with a diagnosis of cystic fibrosis (CF) and a history of methicillin-resistant Staphylococcus aureus (MRSA), also known as oxacillin-resistant Staphylococcus aureus (ORSA), being treated with intravenous ceftaroline. Patients will have intravenous ceftaroline dosed according to current recommendations based upon its approved usage in pediatric patients for community acquired pneumonia. The investigators will analyze pharmacokinetic (PK) and pharmacodynamic (PD) data using serum concentrations of ceftaroline measured at various time-points following infusion of ceftaroline to develop PK/PD guided dosing strategies of ceftaroline in pediatric CF patients that would be tailored to account for bacterial susceptibility and disease progression and determine if current dosing regimes used are appropriate for this patient population. Blood samples will be collected prior to infusion of ceftaroline and at approximately 1 hour (+/- 10 minutes), 1.5 hours (+/- 10 minutes), 3 hours (+/- 30 minutes), and 6 hours (+/- 30 minutes) after initiation of infusion. The blood samples (0.5 to 1 ml) will be collected through intravenous access, venipuncture, or capillary blood puncture. Samples will be centrifuged at 1500g at 4°C for 15 minutes within 15 minutes of collection. Serum will be separated into two aliquots of a minimum of 0.2 mL and stored at -70°C until analysis. Determination of serum ceftaroline concentrations will be measured using high-performance liquid chromatography (HPLC) method with ultraviolet (UV) detection. Key clinical data (PK/PD) that will be collected includes age, sex, genotype, growth parameters, airway microbiology, sweat chloride values, pulmonary function test (FEV1), concomitant medications, and comorbid disorders (i.e.: CF related diabetes, CF liver disease, short gut, renal dysfunction, pulmonary hypertension, coagulopathy). ;
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