A Study to Compare the Efficacy and Safety of Extended and Intermittent Infusion of Beta-lactams in Critically Ill Paediatric Patients
PEBBLE
A Protocol of a Randomised, Two-arm Superiority Study to Compare the Efficacy and Safety of Extended and Intermittent Infusion of Beta-lactams in Critically Ill Paediatric Patients
1 other identifier
interventional
110
1 country
2
Brief Summary
The goal of this clinical trial is to examine the success and safety of administering certain antibiotics (beta-lactams) given in a longer 3-hour infusion to children (0-17 years) who are critically ill and have severe infection. The main question it aims to answer is: Is the longer infusion more effective than the conventional short-term (0.5-hour-long) infusion? Researchers will compare the 3-hour-long infusion group to the 0.5-hour-long infusion group to determine whether the longer infusion can cure the infection earlier and whether it is equally safe. The doses are the same in the two groups. Only the duration differs until the patient receives the antibiotic. Participants will:
- be given the required antibiotic drug in a 3-hour-long or in a 0.5 hour-long infusion.
- be examined to make sure their blood drug levels are correct. This will require two blood tests.
- be treated according to routine care and have examinations and blood tests performed.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_4
Started Apr 2026
2 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
March 3, 2026
CompletedFirst Posted
Study publicly available on registry
March 20, 2026
CompletedStudy Start
First participant enrolled
April 1, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 1, 2028
ExpectedStudy Completion
Last participant's last visit for all outcomes
April 1, 2028
April 13, 2026
March 1, 2026
2 years
March 3, 2026
April 7, 2026
Conditions
Outcome Measures
Primary Outcomes (1)
Proportion of patients achieving PK/PD index: 100% fT>MIC (Ctrough >MIC)
In critically ill patients, it is recommended to maintain plasma levels 1-4 times higher than the minimal inhibitory concentration (MIC) of the bacterium isolated throughout the dosing interval (100% fT\>1-4×MIC). The primary outcome for the study will be the proportion of patients achieving therapeutic and optimal drug exposure, defined as plasma concentrations above the MIC for 100% of the dosing interval. Trough plasma concentration levels should be measured. The pharmacokinetic-pharmacodynamic (PK/PD) index used is 100% fT\>MIC (Ctrough \>MIC).
two times >48 hours after initiation of antibiotic treatment according to the treatment allocation
Secondary Outcomes (13)
Proportion of patients achieving PK/PD index: 100% fT>4xMIC (Ctrough >4xMIC)
two times >48 hours after initiation of antibiotic treatment according to the treatment allocation
Time to normalisation of C-reactive protein (CRP)
From enrollment to the end of treatment (maximum 30 days).
Time to normalisation of procalcitonin (PCT)
From enrollment to the end of treatment (maximum 30 days).
Time to normalisation of white blood cells (WBC)
From enrollment to the end of treatment (maximum 30 days).
Microbiological eradication rate
On day 0 before initiation of antibiotic treatment and on days 2, 3 and 5 after initiation of antibiotic treatment
- +8 more secondary outcomes
Study Arms (2)
pediatric patients, short-term infusion (P, SI) and neonatal patients, short-term infusion (N, SI)
ACTIVE COMPARATORsubset P: 28 days - 17 years subset N: term or pre-term infants \< 28 days of post-natal age, or PMA\* \< 44 weeks \*postmenstrual age
pediatric patients, extended infusion (P, EI) and neonatal patients, extended infusion (N, EI)
EXPERIMENTALsubset P: 28 days - 17 years subset N: term or pre-term infants \< 28 days of post-natal age, or PMA\* \< 44 weeks \*postmenstrual age
Interventions
Group extended infusion (EI): Duration of infusion is 3 hours (h) Subset paediatric (P): The doses of beta-lactams are (q…h= every…hours): \- meropenem (MPM): 30 mg/kg or 40 mg/kg for meningitis q8h (max. 2 g q8h) Subset neonatal (N): The doses of beta-lactams are as recommended by NeoFax® (MerativeTM Micromedex® database), based on postmenstrual age (PMA) and postnatal age.
Group short-term infusion (SI): Duration of infusion is 0.5 hour (h) Subset paediatric (P): The doses of beta-lactams are (q…h= every…hours): \- meropenem (MPM): 30 mg/kg or 40 mg/kg for meningitis q8h (max. 2 g q8h) Subset neonatal (N): The doses of beta-lactams are as recommended by NeoFax® (MerativeTM Micromedex® database), based on postmenstrual age (PMA) and postnatal age.
Group extended infusion (EI): Duration of infusion is 3 hours (h) Subset paediatric (P): The doses of beta-lactams are (q…h= every…hours): \- piperacillin/tazobactam (TZP): 90 mg/kg piperacillin q6h for non-immunosuppressed patients and 100 mg/kg piperacillin q6h for immunosuppressed patients (max. 4.5 g piperacillin/tazobactam per dose) Subset neonatal (N): The doses of beta-lactams are as recommended by NeoFax® (MerativeTM Micromedex® database), based on postmenstrual age (PMA) and postnatal age.
Group extended infusion (EI): Duration of infusion is 3 hours (h) Subset paediatric (P): The doses of beta-lactams are (q…h= every…hours): \- cefepime (CFP): 30-50 mg/kg q8h or q12h (\>1 month: 30 mg/kg every 8-12 hours, 2 months-17 years (bodyweight up to 41 kg): 50 mg/kg every 8-12 hours (max. 2 g per dose; increased dose \[q8h\] used for severe infection and febrile neutropenia) Subset neonatal (N): The doses of beta-lactams are as recommended by NeoFax® (MerativeTM Micromedex® database), based on postmenstrual age (PMA) and postnatal age.
Group extended infusion (EI): Duration of infusion is 3 hours (h) Subset paediatric (P): The doses of beta-lactams are (q…h= every…hours): \- ceftriaxone (CTX): 50 mg/kg q12h (max. 4 g per day) Subset neonatal (N): The doses of beta-lactams are as recommended by NeoFax® (MerativeTM Micromedex® database), based on postmenstrual age (PMA) and postnatal age.
Group short-term infusion (SI): Duration of infusion is 0.5 hour (h) Subset paediatric (P): The doses of beta-lactams are (q…h= every…hours): \- piperacillin/tazobactam (TZP): 90 mg/kg piperacillin q6h for non-immunosuppressed patients and 100 mg/kg piperacillin q6h for immunosuppressed patients (max. 4.5 g piperacillin/tazobactam per dose) Subset neonatal (N): The doses of beta-lactams are as recommended by NeoFax® (MerativeTM Micromedex® database), based on postmenstrual age (PMA) and postnatal age.
Group short-term infusion (SI): Duration of infusion is 0.5 hour (h) Subset paediatric (P): The doses of beta-lactams are (q…h= every…hours): \- cefepime (CFP): 30-50 mg/kg q8h or q12h (\>1 month: 30 mg/kg every 8-12 hours, 2 months-17 years (bodyweight up to 41 kg): 50 mg/kg every 8-12 hours (max. 2 g per dose; increased dose \[q8h\] used for severe infection and febrile neutropenia) Subset neonatal (N): The doses of beta-lactams are as recommended by NeoFax® (MerativeTM Micromedex® database), based on postmenstrual age (PMA) and postnatal age.
Group short-term infusion (SI): Duration of infusion is 0.5 hour (h) Subset paediatric (P): The doses of beta-lactams are (q…h= every…hours): \- ceftriaxone (CTX): 50 mg/kg q12h (max. 4 g per day) Subset neonatal (N): The doses of beta-lactams are as recommended by NeoFax® (MerativeTM Micromedex® database), based on postmenstrual age (PMA) and postnatal age.
Eligibility Criteria
You may qualify if:
- paediatric patients (0-17 years of age) with suspected or confirmed bacterial infection who are treated in a PICU or NICU and diagnosed with sepsis with a total Phoenix Sepsis Score ≥2 points, and the infection is clinically probable or confirmed by microbiological culture (e.g. from a blood culture, cerebrospinal fluid, urine, trachea, wound, etc.), excluding contamination;
- who are receiving β-lactams including meropenem, piperacillin/tazobactam, cefepime and ceftriaxone;
- written consent of the parent or guardian is obtained.
You may not qualify if:
- palliative care patients;
- patients participating in other drug trials;
- patients with impaired renal function if dosing modification is required (estimated Glomerular Filtration Rate \[eGFR\]\<50 mL/min/1.73m2 for meropenem, cefepime, and piperacillin/tazobactam; eGFR\<10 mL/min/1.73m2 for ceftriaxone);
- patients undergoing plasmapheresis (TPE);
- patients undergoing extracorporeal therapy (continuous kidney replacement therapy \[CKRT\] or extracorporeal membrane oxygenation \[ECMO\]);
- β-lactam allergy;
- patients admitted from another institution or department who have been on the same β-lactam treatment for more than 24 hours;
- pregnancy.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (2)
Pediatric Center (Bókay Street Department), Semmelweis University
Budapest, 1083, Hungary
Pediatric Center (Tűzoltó Street Department), Semmelweis University
Budapest, 1094, Hungary
Related Publications (10)
Andre P, Diezi L, Dao K, Crisinel PA, Rothuizen LE, Chtioui H, Decosterd LA, Diezi M, Asner S, Buclin T. Ensuring Sufficient Trough Plasma Concentrations for Broad-Spectrum Beta-Lactam Antibiotics in Children With Malignancies: Beware of Augmented Renal Clearance! Front Pediatr. 2022 Jan 5;9:768438. doi: 10.3389/fped.2021.768438. eCollection 2021.
PMID: 35083184BACKGROUNDVan Der Heggen T, Dhont E, Willems J, Herck I, Delanghe JR, Stove V, Verstraete AG, Vanhaesebrouck S, De Paepe P, De Cock PAJG. Suboptimal Beta-Lactam Therapy in Critically Ill Children: Risk Factors and Outcome. Pediatr Crit Care Med. 2022 Jul 1;23(7):e309-e318. doi: 10.1097/PCC.0000000000002951. Epub 2022 Apr 15.
PMID: 35426861BACKGROUNDO'Keefe K, Denny KJ, Le Marsney R, McCullough J, Gilholm P, Budai KA, Beranger A, Lodi C, Obeidat M, Ragonnet G, Wacharachaisurapol N, Roberts JA, Gibbons KS, Raman S. Prolonged Versus Intermittent Beta-Lactam Antibiotic Infusions in Paediatric Critical Care: A Systematic Review and Meta-Analysis. J Paediatr Child Health. 2026 Feb;62(2):160-170. doi: 10.1111/jpc.70275. Epub 2025 Dec 27.
PMID: 41454710BACKGROUNDBriand A, Bernier L, Pincivy A, Roumeliotis N, Autmizguine J, Marsot A, Metras ME, Thibault C. Prolonged Beta-Lactam Infusions in Children: A Systematic Review and Meta-Analysis. J Pediatr. 2024 Dec;275:114220. doi: 10.1016/j.jpeds.2024.114220. Epub 2024 Aug 2.
PMID: 39097265BACKGROUNDRoberts JA, Paul SK, Akova M, Bassetti M, De Waele JJ, Dimopoulos G, Kaukonen KM, Koulenti D, Martin C, Montravers P, Rello J, Rhodes A, Starr T, Wallis SC, Lipman J; DALI Study. DALI: defining antibiotic levels in intensive care unit patients: are current beta-lactam antibiotic doses sufficient for critically ill patients? Clin Infect Dis. 2014 Apr;58(8):1072-83. doi: 10.1093/cid/ciu027. Epub 2014 Jan 14.
PMID: 24429437BACKGROUNDZhou P, Zhang Y, Wang Z, Ying Y, Xing Y, Tong X, Zhai S. Extended or Continuous Infusion of Carbapenems in Children with Severe Infections: A Systematic Review and Narrative Synthesis. Antibiotics (Basel). 2021 Sep 9;10(9):1088. doi: 10.3390/antibiotics10091088.
PMID: 34572670BACKGROUNDHartman SJF, Bruggemann RJ, Orriens L, Dia N, Schreuder MF, de Wildt SN. Pharmacokinetics and Target Attainment of Antibiotics in Critically Ill Children: A Systematic Review of Current Literature. Clin Pharmacokinet. 2020 Feb;59(2):173-205. doi: 10.1007/s40262-019-00813-w.
PMID: 31432468BACKGROUNDCies JJ, Moore WS 2nd, Enache A, Chopra A. beta-lactam Therapeutic Drug Management in the PICU. Crit Care Med. 2018 Feb;46(2):272-279. doi: 10.1097/CCM.0000000000002817.
PMID: 29112080BACKGROUNDImburgia TA, Kussin ML. A Review of Extended and Continuous Infusion Beta-Lactams in Pediatric Patients. J Pediatr Pharmacol Ther. 2022;27(3):214-227. doi: 10.5863/1551-6776-27.3.214. Epub 2022 Mar 21.
PMID: 35350159BACKGROUNDBudai KA, Timar AE, Obeidat M, Mate V, Nagy R, Harnos A, Kiss-Dala S, Hegyi P, Garami M, Hanko B, Lodi C. Extended infusion of beta-lactams significantly reduces mortality and enhances microbiological eradication in paediatric patients: a systematic review and meta-analysis. EClinicalMedicine. 2023 Nov 2;65:102293. doi: 10.1016/j.eclinm.2023.102293. eCollection 2023 Nov.
PMID: 38021371BACKGROUND
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 4
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
March 3, 2026
First Posted
March 20, 2026
Study Start
April 1, 2026
Primary Completion (Estimated)
April 1, 2028
Study Completion (Estimated)
April 1, 2028
Last Updated
April 13, 2026
Record last verified: 2026-03
Data Sharing
- IPD Sharing
- Will share
After publication, the IPD that underlie the results will be available upon request in encrypted form, subject to approval by the corresponding author.