Multicentric, double-blind clinical trial, which will evaluate the efficacy of iv paracetamol versus standard treatment with ibuprofen in the closure of patent ductus arteriosus in the preterm newborn. Secondarily, we intend to compare the safety of both treatments, increase our knowledge about the pharmacokinetics, pharmacodynamics and pharmacogenetics of paracetamol and ibuprofen in the neonatal period and make a pharmacoeconomic assessment of the use of both drugs.
Those newborns ≤ 30 weeks of gestational age who are diagnosed in the first 2 weeks of hemodynamically significant ductus arteriosus and who do not meet any exclusion criteria will be eligible to participate in the study. The PARACETAMOL group will receive intravenous doses of 15 mg/kg administered every 6h for 3 days (up to a maximum of 2 courses, i.e. 6 days). The IBUPROFEN group (control group) will receive the usual treatment, this is an initial dose of 10 mg/kg followed by 5 mg/kg intravenously at 24 and 48 hours after the first (all three doses are considered a treatment course), up a maximum of 2 courses). A daily echocardiographic control will be performed to evaluate the closure of the ductus. If the ductus remains open and with significant clinical repercussion after completing a 3-day course of treatment, another batch of 3 doses of the same treatment will be administered. If medical treatment fails after two courses (6 days), the possibility of administering a batch of Ibuprofen at usual doses in both groups with the intention of offering standard treatment to all patients will be considered. Once the medical treatment with both drugs is completed if the ductus remains significant, the surgical closure will be carried out.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
133
Intravenous paracetamol 15 mg/kg/6h
Intravenous ibuprofen 10 mg/kg/24h (day 1) and 5 mg/kg/24h (day 2 and 3)
Hospital Reina Sofía
Córdoba, Cordoba, Spain
Hospital Universitario de Cabueñes
Gijón, Gijón, Spain
Hospital Materno-Infantil (Hospital Regional Carlos Haya) Málaga:
Málaga, Málaga, Spain
Hospital Universitari i Politècnic La Fe
Valencia, Valencia, Spain
Rate of closure of the hsPDA after treatment with paracetamol (experimental drug) versus ibuprofen (control drug).
It will include the closure rate after the first course of treatment, considered as ductus diameter \< 1 mm monitored by echocardiography performed by a pediatric cardiology specialist.
Time frame: 24-48 hours after the completion of study intervention
Need for a second course of treatment
Time frame: from randomization until discharge, an average of 2 months
Closure rate after two treatment courses
Time frame: from randomization until discharge, an average of 2 months
Need for rescue treatment after two courses of treatment
Time frame: from randomization until discharge, an average of 2 months
Reopening rate after closure
Time frame: from randomization until discharge, an average of 2 months
Closing rate after reopening
Time frame: from randomization until discharge, an average of 2 months
Time required until closing
Time frame: from randomization until discharge, an average of 2 months
Need for surgical ligation
Time frame: from randomization until discharge, an average of 2 months
Incidence of early complications
oliguria, renal failure, necrotizing enterocolitis, intraventricular hemorrhage, hyperbilirubinemia, gastrointestinal bleeding or perforation
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Time frame: from randomization until discharge, an average of 2 months
Incidence of late complications
bronchopulmonary dysplasia, periventricular leukomalacia, necrotizing enterocolitis, retinopathy of the newborn, neurodevelopmental assessment, sepsis, death
Time frame: from randomization until 2 years
Pharmacodynamics model of paracetamol in the context of hsPDA: Maximum Plasma Concentration [Cmax]
Relation of effectiveness/adverse reactions to serum levels
Time frame: 24-48 hours after the completion of study intervention
Pharmacodynamics model of paracetamol in the context of hsPDA: Minimum Plasma Concentration [Cmin]
Relation of effectiveness/adverse reactions to serum levels
Time frame: 24-48 hours after the completion of study intervention
Pharmacodynamics model of paracetamol in the context of hsPDA: Area Under the Curve [AUC])
Relation of effectiveness/adverse reactions to serum levels
Time frame: 24-48 hours after the completion of study intervention
Pharmacodynamics model of paracetamol in the context of hsPDA: urine metabolites
Quantification of metabolites in urine and its relationship with drug elimination/metabolism
Time frame: 24-48 hours after the completion of study intervention
Pharmacogenetics of paracetamol
Genetic polymorphisms in TFAP2B, TGFBR2, EPAS1, MD-2 and GM2A genes related to efficacy/occurrence of adverse reactions
Time frame: 24-48 hours after the completion of study intervention
Price-effectiveness ratio. Cost-effectiveness analysis depending on the efficiency obtained in the treatment.
Time frame: from randomization until discharge, an average of 2 months
Genotoxicity mesured by %DNA damage
Time frame: from randomization until discharge, an average of 2 months