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Wu Y, Völler S, Krekels EHJ, Roofthooft DWE, Simons SHP, Tibboel D, Flint RB, Knibbe CAJ. Maturation of Paracetamol Elimination Routes in Preterm Neonates Born Below 32 Weeks of Gestation. Pharm Res 2023; 40:2155-2166. [PMID: 37603141 PMCID: PMC10547636 DOI: 10.1007/s11095-023-03580-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 07/26/2023] [Indexed: 08/22/2023]
Abstract
PURPOSE Despite being off-label, intravenous paracetamol (PCM) is increasingly used to control mild-to-moderate pain in preterm neonates. Here we aim to quantify the maturation of paracetamol elimination pathways in preterm neonates born below 32 weeks of gestation. METHODS Datasets after single dose (rich data) or multiple doses (sparse data) of intravenous PCM dose (median (range)) 9 (3-25) mg/kg were pooled, containing 534 plasma and 44 urine samples of PCM and metabolites (PCM-glucuronide, PCM-sulfate, PCM-cysteine, and PCM-mercapturate) from 143 preterm neonates (gestational age 27.7 (24.0-31.9) weeks, birthweight 985 (462-1,925) g, postnatal age (PNA) 5 (0-30) days, current weight 1,012 (462-1,959) g. Population pharmacokinetic analysis was performed using NONMEM® 7.4. RESULTS For a typical preterm neonate (birthweight 985 g; PNA 5 days), PCM clearance was 0.137 L/h, with glucuronidation, sulfation, oxidation and unchanged renal clearance accounting for 5.3%, 73.7%, 16.3% and 4.6%, respectively. Maturational changes in total PCM clearance and its elimination pathways were best described by birthweight and PNA. Between 500-1,500 g birthweight, total PCM clearance increases by 169%, with glucuronidation, sulfation and oxidation clearance increasing by 347%, 164% and 164%. From 1-30 days PNA for 985 g birthweight neonate, total PCM clearance increases by 167%, with clearance via glucuronidation and oxidation increasing by 551%, and sulfation by 69%. CONCLUSION Birthweight and PNA are the most important predictors for maturational changes in paracetamol clearance and its glucuronidation, sulfation and oxidation. As a result, dosing based on bodyweight alone will not lead to consistent paracetamol concentrations among preterm neonates.
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Affiliation(s)
- Yunjiao Wu
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Swantje Völler
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Elke H J Krekels
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Daniëlla W E Roofthooft
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Sinno H P Simons
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Dick Tibboel
- Department of Pediatric Surgery, Erasmus University MC-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Robert B Flint
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Catherijne A J Knibbe
- Division of Systems Pharmacology and Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands.
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands.
- Department of Clinical Pharmacy, St Antonius Hospital, PO Box 2500, 3430 EM, Nieuwegein, The Netherlands.
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Valentine GC, Perez KM, Wood TR, Mayock DE, Comstock BA, Puia-Dumitrescu M, Heagerty PJ, Juul SE. Postnatal maximal weight loss, fluid administration, and outcomes in extremely preterm newborns. J Perinatol 2022; 42:1008-1016. [PMID: 35338252 DOI: 10.1038/s41372-022-01369-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 01/31/2022] [Accepted: 03/10/2022] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Evaluate maximal weight loss (MWL) and total fluid administration (TFA) association in first week after birth with outcomes among extremely preterm (EP) newborns. STUDY DESIGN We performed a retrospective analysis of the Preterm Erythropoietin Neuroprotection Trial evaluating first-week MWL, TFA, and association with in-hospital outcomes. RESULTS Among n = 883 included EP neonates, n = 842 survived ≥ 7 days and were included in outcome analyses. MWL between 5% to 15% was associated with decreased odds of necrotizing enterocolitis compared to MWL > 15% (OR 0.49, 95% CI 0.25-0.98). Average TFA > 150 mL/kg birthweight/day was associated with increased odds of necrotizing enterocolitis (OR 3.22, 95% CI 1.40-7.42) and patent ductus arteriosus requiring surgery (OR 2.14, 95% CI 1.10-4.15). CONCLUSION MWL between 5% to 15% is a potentially optimal window of MWL. Increasing average TFA in the first week is associated with adverse neonatal outcomes. Prospective studies evaluating MWL and TFA and relationship to outcomes in EP neonates are needed. CLINICAL TRIAL REGISTRATION This study is a secondary analysis of pre-existing data from the PENUT Trial Registration: NCT01378273, https://clinicaltrials.gov/ct2/show/NCT01378273 .
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Affiliation(s)
- Gregory C Valentine
- Division of Neonatology, University of Washington/Seattle Children's Hospital, Seattle, WA, USA. .,Department of Obstetrics & Gynecology, Division of Maternal-Fetal Medicine at Baylor College of Medicine, Houston, TX, USA.
| | - Krystle M Perez
- Division of Neonatology, University of Washington/Seattle Children's Hospital, Seattle, WA, USA
| | - Thomas R Wood
- Division of Neonatology, University of Washington/Seattle Children's Hospital, Seattle, WA, USA
| | - Dennis E Mayock
- Division of Neonatology, University of Washington/Seattle Children's Hospital, Seattle, WA, USA
| | - Bryan A Comstock
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Mihai Puia-Dumitrescu
- Division of Neonatology, University of Washington/Seattle Children's Hospital, Seattle, WA, USA
| | | | - Sandra E Juul
- Division of Neonatology, University of Washington/Seattle Children's Hospital, Seattle, WA, USA.,Center on Human Development and Disability, University of Washington, Seattle, WA, USA
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Ambreen G, Kumar V, Ali SR, Jiwani U, Khowaja W, Hussain AS, Hussain K, Raza SS, Rizvi A, Ansari U, Ahmad K, Demas S, Ariff S. Impact of a standardised parenteral nutrition protocol: a quality improvement experience from a NICU of a developing country. Arch Dis Child 2022; 107:381-386. [PMID: 34257078 DOI: 10.1136/archdischild-2021-321552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 06/21/2021] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Nutrition societies recommend using standardised parenteral nutrition (SPN) solutions. We designed evidence-based SPN formulations for neonates admitted to our neonatal intensive care unit (NICU) and evaluated their outcomes. DESIGN This was a quality improvement initiative. Data were collected retrospectively before and after the intervention. SETTING A tertiary-care level 3 NICU at the Aga Khan University in Karachi, Pakistan. PATIENTS All NICU patients who received individualised PN (IPN) from December 2016 to August 2017 and SPN from October 2017 to June 2018. INTERVENTIONS A team of neonatologists and nutrition pharmacists collaborated to design two evidence-based SPN solutions for preterm neonates admitted to the NICU. MAIN OUTCOME MEASURES We recorded mean weight gain velocity from days 7 to 14 of life. The other outcomes were change in weight expressed as z-scores, metabolic abnormalities, PN-associated liver disease (PNALD), length of NICU stay and episodes of sepsis during hospital stay. RESULTS Neonates on SPN had greater rate of change in weight compared with IPN (β=13.40, 95% CI: 12.02 to 14.79) and a smaller decrease in z-scores (p<0.001). Neonates in the SPN group had fewer hyperglycemic episodes (IPN: 37.5%, SPN: 6.2%) (p<0.001), electrolyte abnormalities (IPN: 56.3%, SPN: 21%) (p<0.001), PNALD (IPN: 52.5%, SPN: 18.5%) (p<0.001) and sepsis (IPN: 26%, SPN: 20%) (p<0.05). The median length of stay in NICU was 14.0 (IQR 12.0-21.0) for the IPN and 8.0 (IQR 5.0-13.0) days for the SPN group. CONCLUSIONS We found that SPN was associated with shorter NICU stay and greater weight gain. In-house preparation of SPN can be used to address the nutritional needs in resource-limited settings where commercially prepared SPN is not available.
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Affiliation(s)
- Gul Ambreen
- Department of Pharmacy, Aga Khan University Hospital, Karachi, Pakistan
| | - Vikram Kumar
- Neonatology, Indus Hospital and Health Network, Karachi, Sindh, Pakistan
| | - Syed Rehan Ali
- Neonatology, Indus Hospital and Health Network, Karachi, Sindh, Pakistan
| | - Uswa Jiwani
- Center of Excellence in Women and Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Waqar Khowaja
- Department of Paediatrics and Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Ali Shabbir Hussain
- Department of Paediatrics and Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Kashif Hussain
- Department of Pharmacy, Aga Khan University Hospital, Karachi, Pakistan
| | - Syed Shamim Raza
- Department of Pharmacy, Aga Khan University Hospital, Karachi, Pakistan
| | - Arjumand Rizvi
- Department of Paediatrics and Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Uzair Ansari
- Department of Paediatrics and Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Khalil Ahmad
- Department of Paediatrics and Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Simon Demas
- Department of Paediatrics and Child Health, Aga Khan University Hospital, Karachi, Pakistan
| | - Shabina Ariff
- Department of Paediatrics and Child Health, Aga Khan University Hospital, Karachi, Pakistan
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Wu Y, Allegaert K, Flint RB, Simons SHP, Krekels EHJ, Knibbe CAJ, Völler S. Prediction of glomerular filtration rate maturation across preterm and term neonates and young infants using inulin as marker. AAPS J 2022; 24:38. [PMID: 35212832 DOI: 10.1208/s12248-022-00688-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 01/30/2022] [Indexed: 11/30/2022] Open
Abstract
Describing glomerular filtration rate (GFR) maturation across the heterogeneous population of preterm and term neonates and infants is important to predict the clearance of renally cleared drugs. This study aims to describe the GFR maturation in (pre)term neonates and young infants (PNA < 90 days) using individual inulin clearance data (CLinulin). To this end, published GFR maturation models were evaluated by comparing their predicted GFR with CLinulin retrieved from literature. The best model was subsequently optimized in NONMEM V7.4.3 to better fit the CLinulin values. Our study evaluated seven models and collected 381 individual CLinulin values from 333 subjects with median (range) birthweight (BWb) 1880 g (580-4950), gestational age (GA) 34 weeks (25-43), current weight (CW) 1890 g (480-6200), postnatal age (PNA) 3 days (0-75), and CLinulin 2.20 ml/min (0.43-17.90). The De Cock 2014 model (covariates: BWb and PNA) performed the best in predicting CLinulin, followed by the Rhodin 2009 model (covariates: CW and postmenstrual age). The final optimized model shows that GFR at birth is determined by BWb, thereafter the maturation rate of GFR is dependent on PNA and GA, with a higher GA showing an overall faster maturation. To conclude, using individual CLinulin data, we found that a model for neonatal GFR requires a distinction between prenatal maturation quantified by BWb and postnatal maturation. To capture postnatal GFR maturation in (pre)term neonates and young infants, we developed an optimized model in which PNA-related maturation was dependent on GA.
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Affiliation(s)
- Yunjiao Wu
- Division of Systems Biomedicine and Pharmacology, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Karel Allegaert
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands.,Departments of Development and Regeneration and Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Robert B Flint
- Department of Hospital Pharmacy, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Sinno H P Simons
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Elke H J Krekels
- Division of Systems Biomedicine and Pharmacology, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Catherijne A J Knibbe
- Division of Systems Biomedicine and Pharmacology, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands.,Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands.,Department of Clinical Pharmacy, St Antonius Hospital, Nieuwegein, The Netherlands
| | - Swantje Völler
- Division of Systems Biomedicine and Pharmacology, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands. .,Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands. .,Pharmacy, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands.
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Ramdin T, Radomsky M, Raxendis C, Devchand T, Morris C, Sekgota C, Stols L, Mokhachane M. A Review of Very-Low-Birth-Weight Infants Admitted to the Kangaroo Mother Care Unit in Johannesburg, South Africa. Cureus 2021; 13:e20428. [PMID: 35047265 PMCID: PMC8759983 DOI: 10.7759/cureus.20428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/15/2021] [Indexed: 11/26/2022] Open
Abstract
Background Kangaroo Mother Care (KMC) is a widely implemented intervention developed as an alternative form of care in low- and middle-income countries (LMICs) for neonates. The implementation of KMC has significantly reduced morbidity and mortality in very-low-birth-weight infants (VLBWIs). Aim To describe the maternal and neonatal characteristics and clinical outcomes in VLBWIs who received KMC at a tertiary hospital. Methods This is a retrospective descriptive study of 981 VLBWIs admitted at Charlotte Maxeke Johannesburg Academic Hospital (CMJAH) over a six-year period (January 1, 2014, to December 31, 2019). Results The mean gestational age of infants admitted to the unit was 29.6 weeks (standard deviation (SD): 2.4), with a mean birth weight of 1185 g (SD: 205.6). The average duration of admission in the neonatal unit was 37 days. The mean rate of weight gain was 37.6 g/kg/day (SD: 57.6). The majority of infants were breastfed (61.4%). In our study, the prevalences of the complications of prematurity were as follows: respiratory distress syndrome (RDS), 84.2%; late-onset sepsis (LOS), 26.1%; and retinopathy of prematurity (ROP), 10.6%. The mortality rate was 3.1%. Maternal comorbidities include human immunodeficiency virus (HIV) (26.4%), syphilis (2.9%) and gestational hypertension (33.7%). The antenatal clinic attendance rate was good (84.7%). Conclusion KMC is a cost-effective alternative to conventional care for VLBWIs in limited-resource countries, with evidence of increased weight gain, less rates of complications of prematurity and low overall mortality. The provision of KMC facilities is urgently required in LMICs.
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Affiliation(s)
- Tanusha Ramdin
- Paediatrics and Child Health, University of the Witwatersrand, Johannesburg, ZAF
| | - Michael Radomsky
- Paediatrics and Child Health, University of the Witwatersrand, Johannesburg, ZAF
| | - Christina Raxendis
- Paediatrics and Child Health, University of the Witwatersrand, Johannesburg, ZAF
| | - Tejis Devchand
- Paediatrics and Child Health, University of the Witwatersrand, Johannesburg, ZAF
| | - Cassady Morris
- Paediatrics and Child Health, University of the Witwatersrand, Johannesburg, ZAF
| | - Charmaine Sekgota
- Paediatrics and Child Health, University of the Witwatersrand, Johannesburg, ZAF
| | - Lorenzo Stols
- Paediatrics and Child Health, University of the Witwatersrand, Johannesburg, ZAF
| | - Mantoa Mokhachane
- Unit for Undergraduate Medical Education, University of the Witwatersrand, Johannesburg, ZAF
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6
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Pre- and Postnatal Maturation are Important for Fentanyl Exposure in Preterm and Term Newborns: A Pooled Population Pharmacokinetic Study. Clin Pharmacokinet 2021; 61:401-412. [PMID: 34773609 PMCID: PMC8891207 DOI: 10.1007/s40262-021-01076-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/14/2021] [Indexed: 10/29/2022]
Abstract
BACKGROUND AND OBJECTIVE Fentanyl is an opioid commonly used to prevent and treat severe pain in neonates; however, its use is off label and mostly based on bodyweight. Given the limited pharmacokinetic information across the entire neonatal age range, we characterized the pharmacokinetics of fentanyl across preterm and term neonates to individualize dosing. METHODS We pooled data from two previous studies on 164 newborns with a median gestational age of 29.0 weeks (range 23.9-42.3), birthweight of 1055 g (range 390-4245), and postnatal age (PNA) of 1 day (range 0-68). In total, 673 plasma samples upon bolus dosing (69 patients; median dose 2.1 μg/kg, median 2 boluses per patient) or continuous infusions (95 patients; median dose 1.1 μg/kg/h for 30 h) with and without boluses were used for population pharmacokinetic modeling in NONMEM® 7.4. RESULTS Clearance in neonates with birthweight of 2000 and 3000 g was 2.8- and 5.0-fold the clearance in a neonate with birthweight of 1000 g, respectively. Fentanyl clearance at PNA of 7, 14, and 21 days was 2.7-fold, 3.8-fold, and 4.6-fold the clearance at 1 day, respectively. Bodyweight-based dosing resulted in large differences in fentanyl concentrations. Depending on PNA and birthweight, fentanyl concentrations increased slowly after the start of therapy for both intermittent boluses and continuous infusion and reached a maximum concentration at 12-48 h. CONCLUSIONS As both prenatal and postnatal maturation are important for fentanyl exposure, we propose a birthweight- and PNA-based dosage regimen. To provide rapid analgesia in the first 24 h of treatment, additional loading doses need to be considered.
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The bioavailability and maturing clearance of doxapram in preterm infants. Pediatr Res 2021; 89:1268-1277. [PMID: 32698193 DOI: 10.1038/s41390-020-1037-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 01/07/2023]
Abstract
BACKGROUND Doxapram is used for the treatment of apnea of prematurity in dosing regimens only based on bodyweight, as pharmacokinetic data are limited. This study describes the pharmacokinetics of doxapram and keto-doxapram in preterm infants. METHODS Data (302 samples) from 75 neonates were included with a median (range) gestational age (GA) 25.9 (23.9-29.4) weeks, bodyweight 0.95 (0.48-1.61) kg, and postnatal age (PNA) 17 (1-52) days at the start of continuous treatment. A population pharmacokinetic model was developed using non-linear mixed-effects modelling (NONMEM®). RESULTS A two-compartment model best described the pharmacokinetics of doxapram and keto-doxapram. PNA and GA affected the formation clearance of keto-doxapram (CLFORMATION KETO-DOXAPRAM) and clearance of doxapram via other routes (CLDOXAPRAM OTHER ROUTES). For a median individual of 0.95 kg, GA 25.6 weeks, and PNA 29 days, CLFORMATION KETO-DOXAPRAM was 0.115 L/h (relative standard error (RSE) 12%) and CLDOXAPRAM OTHER ROUTES was 0.645 L/h (RSE 9%). Oral bioavailability was estimated at 74% (RSE 10%). CONCLUSIONS Dosing of doxapram only based on bodyweight results in the highest exposure in preterm infants with the lowest PNA and GA. Therefore, dosing may need to be adjusted for GA and PNA to minimize the risk of accumulation and adverse events. For switching to oral therapy, a 33% dose increase is required to maintain exposure. IMPACT Current dosing regimens of doxapram in preterm infants only based on bodyweight result in the highest exposure in infants with the lowest PNA and GA. Dosing of doxapram may need to be adjusted for GA and PNA to minimize the risk of accumulation and adverse events. Describing the pharmacokinetics of doxapram and its active metabolite keto-doxapram following intravenous and gastroenteral administration enables to include drug exposure to the evaluation of treatment of AOP. The oral bioavailability of doxapram in preterm neonates is 74%, requiring a 33% higher dose via oral than intravenous administration to maintain exposure.
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8
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Völler S, Flint RB, Andriessen P, Allegaert K, Zimmermann LJI, Liem KD, Koch BCP, Simons SHP, Knibbe CAJ. Rapidly maturing fentanyl clearance in preterm neonates. Arch Dis Child Fetal Neonatal Ed 2019; 104:F598-F603. [PMID: 31498775 DOI: 10.1136/archdischild-2018-315920] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 12/10/2018] [Accepted: 12/31/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Fentanyl is frequently used off-label in preterm newborns. Due to very limited pharmacokinetic and pharmacodynamic data, fentanyl dosing is mostly based on bodyweight. This study describes the maturation of the pharmacokinetics in preterm neonates born before 32 weeks of gestation. METHODS 442 plasma samples from 98 preterm neonates (median gestational age: 26.9 (range 23.9-31.9) weeks, postnatal age: 3 (range 0-68) days, bodyweight 1.00 (range 0.39-2.37) kg) were collected in an opportunistic trial and fentanyl plasma levels were determined. NONMEM V.7.3 was used to develop a population pharmacokinetic model and to perform simulations. RESULTS Fentanyl pharmacokinetics was best described by a two-compartment model. A pronounced non-linear influence of postnatal and gestational age on clearance was identified. Clearance (L/hour/kg) increased threefold, 1.3-fold and 1.01-fold in the first, second and third weeks of life, respectively. In addition, clearance (L/hour/kg) was 1.4-fold and 1.7-fold higher in case of a gestational age of 28 and 31 weeks, respectively, compared with 25 weeks. Volume of distribution changed linearly with bodyweight and was 8.7 L/kg. To achieve similar exposure across the entire population, a continuous infusion (µg/kg/hour) dose should be reduced by 50% and 25% in preterm neonates with a postnatal age of 0-4 days and 5-9 days in comparison to 10 days and older. CONCLUSION Because of low clearance, bodyweight-based dosages may result in fentanyl accumulation in neonates with the lowest postnatal and gestational ages which may require dose reduction. Together with additional information on the pharmacodynamics, the results of this study can be used to guide dosing.
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Affiliation(s)
- Swantje Völler
- Division of Pharmacology, Division Systems Pharmacology and Biomedicine, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands
| | - Robert B Flint
- Division of Neonatology, Department of Pediatrics, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Peter Andriessen
- Division of Neonatology, Department of Pediatrics, Máxima Medical Center, Veldhoven, The Netherlands
| | - Karel Allegaert
- Division of Neonatology, Department of Pediatrics, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Luc J I Zimmermann
- Department of Pediatrics, School of Oncology and Developmental Biology, School of Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Kian D Liem
- Division of Neonatology, Department of Pediatrics, Radboudumc, Nijmegen, The Netherlands
| | - Birgit C P Koch
- Department of Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Sinno H P Simons
- Division of Neonatology, Department of Pediatrics, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Catherijne A J Knibbe
- Division of Pharmacology, Division Systems Pharmacology and Biomedicine, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands.,Department of Clinical Pharmacy, St Antonius Hospital, Nieuwegein, The Netherlands
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9
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Völler S, Flint RB, Beggah F, Reiss I, Andriessen P, Zimmermann LJI, van den Anker JN, Liem KD, Koch BCP, de Wildt S, Knibbe CAJ, Simons SHP. Recently Registered Midazolam Doses for Preterm Neonates Do Not Lead to Equal Exposure: A Population Pharmacokinetic Model. J Clin Pharmacol 2019; 59:1300-1308. [PMID: 31093992 PMCID: PMC6767398 DOI: 10.1002/jcph.1429] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 04/04/2019] [Indexed: 11/11/2022]
Abstract
Although midazolam is a frequently used sedative in neonatal intensive care units, its use in preterm neonates has been off-label. Recently, a new dosing advice for midazolam for sedation on intensive care units has been included in the label (0.03 mg/[kg·h] for preterm neonates <32 weeks and 0.06 mg/[kg·h] for neonates >32 weeks). Concentration-time data of a prospective multicenter study (29 patients, median gestational age 26.7 [range 24.0-31.1 weeks]) were combined with previously published data (26 patients, median gestational age 28.1 [range 26.3-33.6 weeks]), and a population pharmacokinetic model describing the maturation of midazolam pharmacokinetics was developed in NONMEM 7.3. Clearance was 73.7 mL/h for a neonate weighing 1.1 kg and changed nonlinearly with body weight (exponent 1.69). Volume of distribution increased linearly with body weight and was 1.03 L for a neonate weighing 1.1 kg. Simulations of the newly registered dosing show considerable differences in steady-state concentrations in preterm neonates. To reach similar steady-state concentrations of 400 µg/mL (±100 µg/mL), a dose of 0.03 mg/(kg·h) is adequate for neonates ≥1 kg and ≤2 kg but would have to be reduced to 0.02 mg/(kg·h) (-33%) in neonates <1 kg and increased to 0.04 mg/(kg·h) (+33%) in neonates weighing >2 kg and ≤2.5 kg. The impact of the observed differences in exposure is difficult to assess because no target concentrations have yet been defined for midazolam, but the current analysis shows that one should be cautious in giving dosage advice based on historical data with a lack of reliable pharmacokinetic and effect data.
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Affiliation(s)
- Swantje Völler
- Division of Systems Biomedicine and Pharmacology, Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands.,Department of Pediatrics, Division of Neonatology, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Robert B Flint
- Department of Pediatrics, Division of Neonatology, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Fouzi Beggah
- Division of Systems Biomedicine and Pharmacology, Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands.,Université de Montpellier, Montpellier, France
| | - Irwin Reiss
- Department of Pediatrics, Division of Neonatology, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Peter Andriessen
- Department of Pediatrics, Division of Neonatology, Máxima Medical Center, Veldhoven, The Netherlands
| | - Luc J I Zimmermann
- Department of Pediatrics, Maastricht University Medical Center, School of Oncology and Developmental Biology, School of Mental Health and Neuroscience, Maastricht, The Netherlands
| | - John N van den Anker
- Intensive Care and Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands.,Division of Clinical Pharmacology, Children's National Health System, Washington, DC, USA.,Division of Pediatric Pharmacology and Pharmacometrics, University of Basel Children's Hospital, Basel, Switzerland
| | - Kian D Liem
- Department of Pediatrics, Division of Neonatology, Radboud, University Medical Center, Nijmegen, The Netherlands
| | - Birgit C P Koch
- Department of Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Saskia de Wildt
- Intensive Care and Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, Rotterdam, The Netherlands.,Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Catherijne A J Knibbe
- Division of Systems Biomedicine and Pharmacology, Leiden Academic Center for Drug Research, Leiden University, Leiden, The Netherlands.,Department of Clinical Pharmacy, St. Antonius Hospital, Nieuwegein, The Netherlands
| | - Sinno H P Simons
- Department of Pediatrics, Division of Neonatology, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, The Netherlands
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10
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Pharmacokinetics of Penicillin G in Preterm and Term Neonates. Antimicrob Agents Chemother 2018; 62:AAC.02238-17. [PMID: 29463540 DOI: 10.1128/aac.02238-17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 01/09/2018] [Indexed: 11/20/2022] Open
Abstract
Group B streptococci are common causative agents of early-onset neonatal sepsis (EOS). Pharmacokinetic (PK) data for penicillin G have been described for extremely preterm neonates but have been poorly described for late-preterm and term neonates. Thus, evidence-based dosing recommendations are lacking. We describe the PK of penicillin G in neonates with a gestational age (GA) of ≥32 weeks and a postnatal age of <72 h. Penicillin G was administered intravenously at a dose of 25,000 or 50,000 IU/kg of body weight every 12 h (q12h). At steady state, PK blood samples were collected prior to and at 5 min, 1 h, 3 h, 8 h, and 12 h after injection. Noncompartmental PK analysis was performed with WinNonlin software. With those data in combination with data from neonates with a GA of ≤28 weeks, we developed a population PK model using NONMEM software and performed probability of target attainment (PTA) simulations. In total, 16 neonates with a GA of ≥32 weeks were included in noncompartmental analysis. The median volume of distribution (V) was 0.50 liters/kg (interquartile range, 0.42 to 0.57 liters/kg), the median clearance (CL) was 0.21 liters/h (interquartile range, 0.16 to 0.29 liters/kg), and the median half-life was 3.6 h (interquartile range, 3.2 to 4.3 h). In the population PK analysis that included 35 neonates, a two-compartment model best described the data. The final parameter estimates were 10.3 liters/70 kg and 29.8 liters/70 kg for V of the central and peripheral compartments, respectively, and 13.2 liters/h/70 kg for CL. Considering the fraction of unbound penicillin G to be 40%, the PTA of an unbound drug concentration that exceeds the MIC for 40% of the dosing interval was >90% for MICs of ≤2 mg/liter with doses of 25,000 IU/kg q12h. In neonates, regardless of GA, the PK parameters of penicillin G were similar. The dose of 25,000 IU/kg q12h is suggested for treatment of group B streptococcal EOS diagnosed within the first 72 h of life. (This study was registered with the EU Clinical Trials Register under EudraCT number 2012-002836-97.).
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11
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Völler S, Flint RB, Stolk LM, Degraeuwe PLJ, Simons SHP, Pokorna P, Burger DM, de Groot R, Tibboel D, Knibbe CAJ. Model-based clinical dose optimization for phenobarbital in neonates: An illustration of the importance of data sharing and external validation. Eur J Pharm Sci 2017; 109S:S90-S97. [PMID: 28506869 DOI: 10.1016/j.ejps.2017.05.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 05/11/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND Particularly in the pediatric clinical pharmacology field, data-sharing offers the possibility of making the most of all available data. In this study, we utilize previously collected therapeutic drug monitoring (TDM) data of term and preterm newborns to develop a population pharmacokinetic model for phenobarbital. We externally validate the model using prospective phenobarbital data from an ongoing pharmacokinetic study in preterm neonates. METHODS TDM data from 53 neonates (gestational age (GA): 37 (24-42) weeks, bodyweight: 2.7 (0.45-4.5) kg; postnatal age (PNA): 4.5 (0-22) days) contained information on dosage histories, concentration and covariate data (including birth weight, actual weight, post-natal age (PNA), postmenstrual age, GA, sex, liver and kidney function, APGAR-score). Model development was carried out using NONMEM® 7.3. After assessment of model fit, the model was validated using data of 17 neonates included in the DINO (Drug dosage Improvement in NeOnates)-study. RESULTS Modelling of 229 plasma concentrations, ranging from 3.2 to 75.2mg/L, resulted in a one compartment model for phenobarbital. Clearance (CL) and volume (Vd) for a child with a birthweight of 2.6kg at PNA day 4.5 was 0.0091L/h (9%) and 2.38L (5%), respectively. Birthweight and PNA were the best predictors for CL maturation, increasing CL by 36.7% per kg birthweight and 5.3% per postnatal day of living, respectively. The best predictor for the increase in Vd was actual bodyweight (0.31L/kg). External validation showed that the model can adequately predict the pharmacokinetics in a prospective study. CONCLUSION Data-sharing can help to successfully develop and validate population pharmacokinetic models in neonates. From the results it seems that both PNA and bodyweight are required to guide dosing of phenobarbital in term and preterm neonates.
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Affiliation(s)
- Swantje Völler
- Division of Pharmacology, Leiden Academic Center for Drug Research, Gorlaeus Laboratories, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Robert B Flint
- Department of Pediatrics, Division of Neonatology, Erasmus MC - Sophia Children's Hospital, Rotterdam, The Netherlands; Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands; Department of Pharmacy, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Leo M Stolk
- Department of Clinical Pharmacy, Maastricht UMC, The Netherlands
| | - Pieter L J Degraeuwe
- Department of Pediatrics, Division of Neonatology, Maastricht UMC, Maastricht, The Netherlands
| | - Sinno H P Simons
- Department of Pediatrics, Division of Neonatology, Erasmus MC - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Paula Pokorna
- Department of Pediatrics - PICU/NICU, General University Hospital, 1st Faculty of Medicine Charles University, Prague, Czech Republic; Department of Pharmacology, General University Hospital, 1st Faculty of Medicine Charles University, Prague, Czech Republic; Intensive Care, Department of Pediatric Surgery, Department of Pediatrics, Erasmus MC - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - David M Burger
- Department of Pharmacy, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ronald de Groot
- Laboratory of Pediatric Infectious Diseases, Department of Pediatrics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Dick Tibboel
- Intensive Care, Department of Pediatric Surgery, Department of Pediatrics, Erasmus MC - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Catherijne A J Knibbe
- Division of Pharmacology, Leiden Academic Center for Drug Research, Gorlaeus Laboratories, Einsteinweg 55, 2333 CC Leiden, The Netherlands; Department of Clinical Pharmacy, St. Antonius Hospital, Nieuwegein, The Netherlands
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12
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Verma RP, Shibli S, Komaroff E. Postnatal Transitional Weight Loss and Adverse Outcomes in Extremely Premature Neonates. Pediatr Rep 2017; 9:6962. [PMID: 28435650 PMCID: PMC5379222 DOI: 10.4081/pr.2017.6962] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 03/06/2017] [Accepted: 03/22/2017] [Indexed: 11/23/2022] Open
Abstract
The early postnatal weight loss (EPWL) is highly variable in the extremely low birth weight infants (birth weight <1000 g, ELBW). It is reported to be unassociated with adverse outcomes within a range of 3-21% of birth weight. Its wide range might have contributed to this lack of association. The aim of our paper is to study the effects of maximum EPWL, graded as low, medium and large on clinical outcomes in ELBW infants. In a retrospective cohort observational study EPWL was measured as maximum weight loss from birth weight (MWL) in ELBW infants and grouped as low (5-12%) moderate (18.1-12%) and high (18-25%). The clinical course and complications of infants were compared between the groups. Gestational age (GA) was highest and surfactant administration, peak inspiratory pressure requirement, fluid intake, urinary output, oxygen dependent days and the number of oxygen dependent infants at age 28 days were lower in the low MWL compared to the high MWL group. However, all these significant P-values declined after controlling for GA. Diabetes mellitus and pregnancy associated hypertension were not noted in mothers in high MWL group, whereas 38% of mothers in low MWL group suffered from the latter (P=0.05). Maximum postnatal transitional weight loss, assessed in the range of low, moderate and high, is not associated with adverse outcomes independent of gestational age in ELBW infants. Maternal hypertension decreases EPWL in them.
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Affiliation(s)
- Rita P Verma
- Department of Pediatrics, Nassau University Medical Center, East Meadow, NY
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13
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Evering VHM, Andriessen P, Duijsters CEPM, Brogtrop J, Derijks LJJ. The Effect of Individualized Versus Standardized Parenteral Nutrition on Body Weight in Very Preterm Infants. J Clin Med Res 2017; 9:339-344. [PMID: 28270894 PMCID: PMC5330777 DOI: 10.14740/jocmr2893w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/12/2017] [Indexed: 12/02/2022] Open
Abstract
Background This study was designed to evaluate whether standardizing total parenteral nutrition (TPN) is at least non-inferior to TPN with individualized composition in premature infants with a gestational age (GA) < 32 weeks. Methods In this retrospective cohort study, all preterm born in or transferred to Maxima Medical Center (MMC) within 24 hours after birth with a GA < 32 weeks were included. The individualized group (2011) was compared to the partially standardized group (2012) and completely standardized group (2014) consequently. The primary endpoint was difference in growth. Secondary endpoints included differences in electrolyte concentrations. Results A total of 299 preterm were included in this study. When comparing weight gain, the infants in the (partially) standardized group demonstrated significantly (P < 0.05) less weight loss during the first days of life and grew faster subsequently in the following days than the individualized TPN regimen. Furthermore, significant differences in abnormal serum sodium, chloride, calcium, creatinine, magnesium and triglycerides values were demonstrated. Conclusion TPN with a (partially) standardized composition revealed to be at least non-inferior to TPN with an individualized composition.
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Affiliation(s)
- Vincent H M Evering
- Department of Clinical Pharmacy, Maxima Medical Center, Veldhoven, The Netherlands
| | - Peter Andriessen
- Department of Pediatrics, Maxima Medical Center, Veldhoven, The Netherlands; Faculty of Health, Medicine and Life Science, Maastricht University, Maastricht, The Netherlands
| | | | - Jeroen Brogtrop
- Department of Clinical Pharmacy, Maxima Medical Center, Veldhoven, The Netherlands
| | - Luc J J Derijks
- Department of Clinical Pharmacy, Maxima Medical Center, Veldhoven, The Netherlands
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14
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Giuliani F, Cheikh Ismail L, Bertino E, Bhutta ZA, Ohuma EO, Rovelli I, Conde-Agudelo A, Villar J, Kennedy SH. Monitoring postnatal growth of preterm infants: present and future. Am J Clin Nutr 2016; 103:635S-47S. [PMID: 26791186 PMCID: PMC6443302 DOI: 10.3945/ajcn.114.106310] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND There is no consensus with regard to which charts are most suitable for monitoring the postnatal growth of preterm infants. OBJECTIVE We aimed to assess the strategies used to develop existing postnatal growth charts for preterm infants and their methodologic quality. DESIGN A systematic review of observational longitudinal studies, having as their primary objective the creation of postnatal growth charts for preterm infants, was conducted. Thirty-eight items distributed in 3 methodologic domains ("study design," "statistical methods," and "reporting methods") were assessed in each study. Each item was scored as a "low" or "high" risk of bias. Two reviewers independently selected the studies, assessed the risk of bias, and extracted data. A total quality score [(number of "low risk" of bias marks/total number of items assessed) × 100%] was calculated for each study. Median (range, IQR) quality scores for each methodologic domain and for all included studies were computed. RESULTS Sixty-one studies met the inclusion criteria. Twenty-seven (44.3%) of the 61 studies scored ≥50%, of which 10 scored >60% and only 1 scored >66%. The median (range, IQR) quality score for the 61 included studies was 47% (26-75%, 34-56%). The scores for the domains study design, statistical methods, and reporting methods were 44% (19-67%, 33-52%), 25% (0-88%, 13-38%), and 33% (0-100%, 0-33%), respectively. The most common shortcomings were observed in items related to anthropometric measures (the main variable of interest), gestational age estimation, follow-up duration, reporting of postnatal care and morbidities, assessment of outliers, covariates, and chart presentation. CONCLUSIONS The overall methodologic quality of existing longitudinal studies was fair to low. To overcome these problems, the Preterm Postnatal Follow-up Study, 1 of the 3 main components of The International Fetal and Newborn Growth Consortium for the 21st Century Project, was designed to construct preterm postnatal growth standards from a prospective cohort of "healthy" pregnancies and preterm newborns without evidence of fetal growth restriction.
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Affiliation(s)
- Francesca Giuliani
- Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Leila Cheikh Ismail
- Nuffield Department of Obstetrics & Gynaecology, and Oxford Maternal & Perinatal Health Institute, Green Templeton College, University of Oxford, Oxford, United Kingdom
| | - Enrico Bertino
- Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Zulfiqar A Bhutta
- Center of Excellence in Women & Child Health, The Aga Khan University, Karachi, Pakistan; Center for Global Child Health, Hospital for Sick Children, Toronto, Canada
| | - Eric O Ohuma
- Nuffield Department of Obstetrics & Gynaecology, and Centre for Statistics in Medicine, University of Oxford Botnar Research Centre, Oxford, United Kingdom
| | - Ilaria Rovelli
- Department of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Agustin Conde-Agudelo
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD; National Institutes of Health/Department of Health and Human Services, Detroit, MI
| | - José Villar
- Nuffield Department of Obstetrics & Gynaecology, and Oxford Maternal & Perinatal Health Institute, Green Templeton College, University of Oxford, Oxford, United Kingdom
| | - Stephen H Kennedy
- Nuffield Department of Obstetrics & Gynaecology, and Oxford Maternal & Perinatal Health Institute, Green Templeton College, University of Oxford, Oxford, United Kingdom;
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15
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Maruyama H, Yonemoto N, Kono Y, Kusuda S, Fujimura M. Weight Growth Velocity and Neurodevelopmental Outcomes in Extremely Low Birth Weight Infants. PLoS One 2015; 10:e0139014. [PMID: 26402326 PMCID: PMC4581837 DOI: 10.1371/journal.pone.0139014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 09/07/2015] [Indexed: 11/28/2022] Open
Abstract
Introduction This study aimed to assess whether weight growth velocity (WGV) predicts neurodevelopmental outcomes in extremely low birth weight infants (ELBWIs). Methods Subjects were infants who weighed 501–1000 g at birth and were included in the cohort of the Neonatal Research Network of Japan (2003–2007). Patel’s exponential model (EM) method was used to calculate WGV between birth and discharge. Assessment of predictions of death or neurodevelopmental impairment (NDI) was performed at 3 years of age based on the WGV score, which was categorized by per one increase in WGV. Multivariate logistic regression analysis was used to calculate adjusted odds ratios and their 95% confidence intervals (95%CI). Results In the 2961 ELBWIs assessed, the median WGV was 10.5 g/kg/day (interquartile, 9.4–11.9). With the categorical approach, the adjusted odds ratios for death or NDI with WGV scores of 6 and 7 were 2.41 (95%CI, 1.60–3.62) and 1.81 (95%CI, 1.18–2.75), respectively, relative to the reference WGV score of 10. WGV scores ≥8 did not predict death or NDI. Conclusions WGV scores <8 were significant predictors suggesting that values of WGV during hospitalization in a NICU are associated with neurodevelopmental outcomes. Further investigations is necessary to determine whether additional nutritional support may improve low WGV in ELBWIs.
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Affiliation(s)
- Hidehiko Maruyama
- Department of Pediatrics, Kochi Health Sciences Center, Kochi, Kochi, Japan
| | - Naohiro Yonemoto
- Department of Neuropsychopharmacology, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
- * E-mail:
| | - Yumi Kono
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Satoshi Kusuda
- Department of Neonatology, Maternal and Perinatal Center, Tokyo Women's Medical University, Tokyo, Japan
| | - Masanori Fujimura
- Department of Neonatology, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan
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16
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Loui A, Bührer C. Growth of very low birth weight infants after increased amino acid and protein administration. J Perinat Med 2013; 41:735-41. [PMID: 23950567 DOI: 10.1515/jpm-2013-0010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 07/08/2013] [Indexed: 11/15/2022]
Abstract
AIM To assess the impact of a high enteral protein nutrition strategy in human milk-fed very low birth weight (VLBW) infants (<1500 g) on growth during the first 5 weeks of life. DESIGN Weight, length and head circumference of VLBW infants were recorded after introduction of a high protein strategy. RESULTS Forty-three infants (median/interquartile range) of gestational age 27+6 weeks (26+0/29+6), birth weight 984 g (675/1130) were included. Parenteral nutrition was administered for 16 (14/18) days and the nutritional intakes achieved target values 4.3 g/kg/day protein (4.0/4.4); 128 kcal/kg/day energy (119/131). Human milk was fortified with 0.5-2.3 g/kg/day protein powder in addition to a fortifier. Near-intrauterine growth was observed: Weight gain from days 8-35: 17.6 g/kg/day (14.9/20.5); head growth from day 1-35: 0.70 cm/week (0.50/0.80); length growth from day 1-35: 1.0 cm/week (0.8/1.2). The total protein intake was shown to have a significant impact on infant's weight gain up to the 35th day of life. CONCLUSION High protein nutrition enables similar to fetal growth weight gain and head growth of VLBW infants during the first 5 weeks of life. These data support recently published ESPGHAN recommendations.
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17
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Sicuri E, Bardají A, Sigauque B, Maixenchs M, Nhacolo A, Nhalungo D, Macete E, Alonso PL, Menéndez C. Costs associated with low birth weight in a rural area of Southern Mozambique. PLoS One 2011; 6:e28744. [PMID: 22174885 PMCID: PMC3236214 DOI: 10.1371/journal.pone.0028744] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Accepted: 11/14/2011] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Low Birth Weight (LBW) is prevalent in low-income countries. Even though the economic evaluation of interventions to reduce this burden is essential to guide health policies, data on costs associated with LBW are scarce. This study aims to estimate the costs to the health system and to the household and the Disability Adjusted Life Years (DALYs) arising from infant deaths associated with LBW in Southern Mozambique. METHODS AND FINDINGS Costs incurred by the households were collected through exit surveys. Health system costs were gathered from data obtained onsite and from published information. DALYs due to death of LBW babies were based on local estimates of prevalence of LBW (12%), very low birth weight (VLBW) (1%) and of case fatality rates compared to non-LBW weight babies [for LBW (12%) and VLBW (80%)]. Costs associated with LBW excess morbidity were calculated on the incremental number of hospital admissions in LBW babies compared to non-LBW weight babies. Direct and indirect household costs for routine health care were 24.12 US$ (CI 95% 21.51; 26.26). An increase in birth weight of 100 grams would lead to a 53% decrease in these costs. Direct and indirect household costs for hospital admissions were 8.50 US$ (CI 95% 6.33; 10.72). Of the 3,322 live births that occurred in one year in the study area, health system costs associated to LBW (routine health care and excess morbidity) and DALYs were 169,957.61 US$ (CI 95% 144,900.00; 195,500.00) and 2,746.06, respectively. CONCLUSIONS This first cost evaluation of LBW in a low-income country shows that reducing the prevalence of LBW would translate into important cost savings to the health system and the household. These results are of relevance for similar settings and should serve to promote interventions aimed at improving maternal care.
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Affiliation(s)
- Elisa Sicuri
- Barcelona Centre for International Health Research CRESIB, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.
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18
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Bertino E, Di Nicola P, Giuliani F, Coscia A, Varalda A, Occhi L, Rossi C. Evaluation of postnatal growth of preterm infants. J Matern Fetal Neonatal Med 2011; 24 Suppl 2:9-11. [DOI: 10.3109/14767058.2011.601921] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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19
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Bertino E, Coscia A, Mombrò M, Boni L, Rossetti G, Fabris C, Spada E, Milani S. Postnatal weight increase and growth velocity of very low birthweight infants. Arch Dis Child Fetal Neonatal Ed 2006; 91:F349-56. [PMID: 16638781 PMCID: PMC2672838 DOI: 10.1136/adc.2005.090993] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Only a few studies have dealt with postnatal growth velocity of very low birthweight (VLBW) infants. OBJECTIVE To analyse weight growth kinetics of VLBW infants from birth to over 2 years of age. PATIENTS A total of 262 VLBW infants were selected; inaccurate estimate of gestational age, major congenital anomalies, necrotising enterocolitis, death, and loss to follow up within the first year were the exclusion criteria. METHODS Body weight was recorded daily up to 28 days or up to discontinuation of parenteral nutrition, weekly up to discharge, then at 1, 3, 6, 9, 12, 18, and 24 months of corrected age. Individual growth profiles were fitted with a seven constant, exponential-logistic function suitable for modelling weight loss and weight recovery, two peaks, and the subsequent slow decrease in growth velocity. RESULTS After a postnatal weight loss, all infants showed a late neonatal peak of growth velocity between the 7th and 21st weeks; most also experienced an early neonatal peak between the 2nd and 6th week. VLBW infants who were small for gestational age and those with major morbidities grew less than reference VLBW infants who were the appropriate size for gestational age without major morbidities: at 2 years of age, the difference in weight was about 860 g. The more severe growth impairment seen in VLBW infants with major morbidities is almost entirely due to the reduced height of the late neonatal peak of velocity. CONCLUSIONS The growth model presented here should be a useful tool for evaluating to what extent different pathological conditions or nutritional and medical care protocols affect growth kinetics.
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Affiliation(s)
- E Bertino
- Cattedra di Neonatologia, Dipartimento di Scienze Pediatriche e dell'Adolescenza, Università di Torino, Via Ventimiglia 3, 10126 Torino, Italy.
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