Paracetamol and Cefazolin Pharmacokinetics in Normal Weight and Overweight Children (TISSUE)
Pharmacokinetic evaluations will be conducted to characterize the cefazolin plasma concentration-time profile, cefazolin penetration into subcutaneous adipose tissue, and paracetamol metabolization as assessed through blood sampling. The study population consists of children aged 2 to 15 years with either normal weight or overweight. All participants are admitted for a minor elective surgical procedure and will receive paracetamol and/or cefazolin as part of standard perioperative care.
During the procedure, multiple blood and tissue-fluid samples will be collected to quantify paracetamol and cefazolin concentrations in the bloodstream, as well as cefazolin concentrations in subcutaneous adipose tissue. The study aims to characterize drug concentration-time profiles in blood (paracetamol), plasma (cefazolin), and adipose tissue (cefazolin), and to compare these pharmacokinetic parameters between normal-weight and overweight children.
These data are essential to determine whether standard dosing regimens provide adequate drug exposure across different weight categories. Previous research indicates that achieving specific target concentrations in blood and tissue is necessary for optimal therapeutic effect, yet uncertainty remains regarding appropriate dosing in overweight children.
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Pieter De Cock, Prof. Apr
- Telefonnummer: +32 9 332 29 69
- E-mail: pieter.decock@uzgent.be
Undersøgelse Kontakt Backup
- Navn: Annemie Bauters, MD.
- Telefonnummer: + 32 9 332 18 83
- E-mail: Annemie.Bauters@UGent.be
Studiesteder
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-
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Ghent, Belgien, 9000
- Rekruttering
- Ghent University Hospital, Ghent
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Kontakt:
- Anca Amza
- Telefonnummer: +32 9 332 18 83
- E-mail: anca.amza@uzgent.be
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Ledende efterforsker:
- Pieter De Cock, Prof. Apr.
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Barn
Tager imod sunde frivillige
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Patient admitted to the operating room for minor elective surgery
- Patients undergoing general anesthesia for minor elective surgery
- Patient age: children from 2 years to 15 years
- Patients receiving cefazolin or paracetamol according to the standard procedure
- Intra-arterial (preferred) or intravenous access available for blood sampling
- BMI
Exclusion Criteria:
- Personal or family history of excessive bleeding
- Pre-existing coagulopathy and/or thrombocytopenia
- No catheter available for blood sampling
- Absence of parental consent
- Known allergy to one of the components of the study
- Pregnancy
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Antal grupper/kohorter
Kohorter og interventioner
Gruppe / kohorteGruppe / kohorte |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Standard of Care Paracetamol or Cefazolin treatment in children with normal weight
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Prophylactic Cefazolin treatment per standard-of-care
Andre navne:
Preoperative dose of paracetamol, as per standard-of-care
Andre navne:
|
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Standard of Care Paracetamol or Cefazolin treatment in children with overweight
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Prophylactic Cefazolin treatment per standard-of-care
Andre navne:
Preoperative dose of paracetamol, as per standard-of-care
Andre navne:
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Blood concentrations of paracetamol and its metabolites
Tidsramme: Blood VAMS samples collected at day0 (D0): 1) before infusion(D0): predose , 2) 5 minutes after infusion (D0), 3) 5-120 minutes after infusion (D0): distribution phase, 4) 2 hours after infusion (D0), 5) 3-5 hours after infusion (D0): elimination phase
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Blood concentrations (mg/L) of paracetamol and its metabolites: glucuronide-, sulfate-, cysteine- and mercapturate-conjugates after a single intravenous perfusion of paracetamol.
Samples collected with Volumetric Absorptive Microsampling (VAMS).
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Blood VAMS samples collected at day0 (D0): 1) before infusion(D0): predose , 2) 5 minutes after infusion (D0), 3) 5-120 minutes after infusion (D0): distribution phase, 4) 2 hours after infusion (D0), 5) 3-5 hours after infusion (D0): elimination phase
|
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Cefazolin plasma and tissue concentrations
Tidsramme: At D0 sampled: Plasma: 1) predose, 2) 5 minutes after infusion, 3) 5-120 minutes, 4) 2 hours, 5) 3-5 hours; Microdialysis: 1) baseline (-30 - 0 minutes), 2) first 2 hours after dosing (every 30 minutes a sample), 3) next 3 hours (every 1 hour a sample)
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Plasma concentrations (mg/L) are stored in heparine blood tubes.
Tissue concentrations (mg/L) are collected with a microdialysis device and stored in specific microdialysis vials.
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At D0 sampled: Plasma: 1) predose, 2) 5 minutes after infusion, 3) 5-120 minutes, 4) 2 hours, 5) 3-5 hours; Microdialysis: 1) baseline (-30 - 0 minutes), 2) first 2 hours after dosing (every 30 minutes a sample), 3) next 3 hours (every 1 hour a sample)
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Biomarkers values: enzymes
Tidsramme: Blood was collected togheter with blood sample 4 for cefazolin concentrations, 2 hours after drug administration on day0 (D0)
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Determination of the presence and concentration of enzymes based on the values Aspartate aminotransferase (AST; U/L), Alanine aminotransferase (ALT; U/L), and Gamma-Glutamyl transpeptidase (GGT; U/L).
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Blood was collected togheter with blood sample 4 for cefazolin concentrations, 2 hours after drug administration on day0 (D0)
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Biomarker values: proteins
Tidsramme: Blood was collected togheter with blood sample 4 for cefazolin concentrations, 2 hours after drug administration on day0 (D0)
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Determination of the presence and concentration of proteins based on the values Bilirubin (total & direct; g/L), serum creatinine (SCR; g/L), total protein (g/L), Albumin (g/L), and C-reactive protein (CRP; g/L).
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Blood was collected togheter with blood sample 4 for cefazolin concentrations, 2 hours after drug administration on day0 (D0)
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Studieleder: Anca Amza, Ghent University Hospital and Ghent Univeristy
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
- Ernæringsforstyrrelser
- Overernæring
- Kropsvægt
- Patologiske tilstande, tegn og symptomer
- Ernæringsmæssige og metaboliske sygdomme
- Tegn og symptomer
- Overvægtig
- Svovlforbindelser
- Organiske kemikalier
- Heterocykliske forbindelser
- Heterocykliske forbindelser, 2-ring
- Heterocykliske forbindelser, smeltet ring
- Anilider
- Amider
- Anilinforbindelser
- Aminer
- Acetanilider
- beta-lactams
- Lactams
- Cephalosporiner
- Thiazines
- Acetaminophen
- Cefazolin
- Farmaceutiske præparater
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- ONZ-2023-0432
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
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