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Dammann O, Stansfield BK. Neonatal sepsis as a cause of retinopathy of prematurity: An etiological explanation. Prog Retin Eye Res 2024; 98:101230. [PMID: 37984792 PMCID: PMC10842718 DOI: 10.1016/j.preteyeres.2023.101230] [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: 03/17/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 11/22/2023]
Abstract
Retinopathy of prematurity (ROP) is a complex neonatal disorder with multiple contributing factors. In this paper we have mounted the evidence in support of the proposal that neonatal sepsis meets all requirements for being a cause of ROP (not a condition, mechanism, or even innocent bystander) by means of initiating the early stages of the pathomechanism of ROP occurrence, systemic inflammation. We use the model of etiological explanation, which distinguishes between two overlapping processes in ROP causation. It can be shown that sepsis can initiate the early stages of the pathomechanism via systemic inflammation (causation process) and that systemic inflammation can contribute to growth factor aberrations and the retinal characteristics of ROP (disease process). The combined contribution of these factors with immaturity at birth (as intrinsic risk modifier) and prenatal inflammation (as extrinsic facilitator) seems to provide a cogent functional framework of ROP occurrence. Finally, we apply the Bradford Hill heuristics to the available evidence. Taken together, the above suggests that neonatal sepsis is a causal inducer of ROP.
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Affiliation(s)
- Olaf Dammann
- Dept. of Public Health & Community Medicine, Tufts University School of Medicine, Boston, USA; Dept. of Gynecology & Obstetrics, Hannover Medical School, Hannover, Germany; Dept. of Neuromedicine & Movement Science, Norwegian University of Science & Technology, Trondheim, Norway; Dept. of Philosophy, University of Johannesburg, Johannesburg, South Africa.
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Tao T, Meng X, Xu N, Li J, Cheng Y, Chen Y, Huang L. Ocular phenotype and genetical analysis in patients with retinopathy of prematurity. BMC Ophthalmol 2022; 22:22. [PMID: 35022017 PMCID: PMC8753894 DOI: 10.1186/s12886-022-02252-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 01/06/2022] [Indexed: 12/16/2022] Open
Abstract
Background Retinopathy of prematurity (ROP) is a multifactorial retinal disease, involving both environmental and genetic factors; The purpose of this study is to evaluate the clinical presentations and genetic variants in Chinese patients with ROP. Methods A total of 36 patients diagnosed with ROP were enrolled in this study, their medical and ophthalmic histories were obtained, and comprehensive clinical examinations were performed. Genomic DNA was isolated from peripheral blood of ROP patients, polymerase chain reaction and direct sequencing of the associated pathogenic genes (FZD4, TSPAN12, and NDP) were performed. Results All patients exhibited the clinical manifestations of ROP. No mutations were detected in the TSPAN12 and NDP genes in all patients; Interestingly, three novel missense mutations were identified in the FZD4 gene (p.A2P, p.L79M, and p.Y378C) in four patients, for a detection rate of 11.1% (4/36). Conclusions This study expands the genotypic spectrum of FZD4 gene in ROP patients, and our findings underscore the importance of obtaining molecular analyses and comprehensive health screening for this retinal disease. Supplementary Information The online version contains supplementary material available at 10.1186/s12886-022-02252-x.
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Cota F, Costa S, Giannantonio C, Purcaro V, Catenazzi P, Vento G. Lutein supplementation and retinopathy of prematurity: a meta-analysis. J Matern Fetal Neonatal Med 2020; 35:175-180. [PMID: 32041442 DOI: 10.1080/14767058.2020.1712700] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Background: Retinopathy of prematurity (ROP) is a multifactorial retinal disorder characterized by an abnormal vascular development of the retina of the preterm infants. Carotenoids are natural pigments that are synthesized by all plants and some microorganisms where they play a role in photoprotection and coloration. Lutein and zeaxanthin (L/Z) are two carotenoids identified as the major components of the macular pigment. Recently it has been suggested that lutein and its isomer zeaxanthin may act as antioxidant agents and that they may prevent ROP.Objective: The primary objective of this study is to assess the safety and effectiveness of oral lutein in the prevention of retinopathy of prematurity in preterm neonates.Study design: We conducted a systematic search for randomized or quasi-randomized controlled trials without any language or publication year restriction. The studies have to recruit preterm neonates ≤32 completed weeks of gestation and to compare the administration of oral L/Z at any dosage or duration, versus placebo in order to prevent ROP.Result: Data from three RCT with a total of 406 participants failed to show any reduction in ROP incidence nor the risk of BPD, sepsis, NEC and mortality. It may reduce the number of transfusions but this result has to be assessed in a separate ad hoc trial.
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Affiliation(s)
- Francesco Cota
- Department of Woman and Child Health, Obstetrics and Neonatology Area, Division of Neonatology, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Simonetta Costa
- Department of Woman and Child Health, Obstetrics and Neonatology Area, Division of Neonatology, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Carmen Giannantonio
- Department of Woman and Child Health, Obstetrics and Neonatology Area, Division of Neonatology, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Velia Purcaro
- Department of Woman and Child Health, Obstetrics and Neonatology Area, Division of Neonatology, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Piero Catenazzi
- Department of Woman and Child Health, Obstetrics and Neonatology Area, Division of Neonatology, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Giovanni Vento
- Department of Woman and Child Health, Obstetrics and Neonatology Area, Division of Neonatology, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
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Lundgren P, Hellgren G, Pivodic A, Sävman K, Smith LEH, Hellström A. Erythropoietin serum levels, versus anaemia as risk factors for severe retinopathy of prematurity. Pediatr Res 2019; 86:276-282. [PMID: 30297879 PMCID: PMC6422731 DOI: 10.1038/s41390-018-0186-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/28/2018] [Accepted: 09/04/2018] [Indexed: 01/17/2023]
Abstract
BACKGROUND Preterm infants with anaemia are treated with recombinant human erythropoietin (rhEPO). It is debated whether rhEPO treatment is a risk factor for retinopathy of prematurity (ROP). We evaluated longitudinal EPO and haemoglobin levels, blood transfusions and neonatal morbidities as risk factors for severe ROP. METHOD This prospective study included 78 Swedish infants, born <28 weeks gestational age (GA), screened for ROP. We tested serum EPO levels on postnatal days 1, 7, 14 and 28 and at postmenstrual ages 32, 36 and 40 weeks. Haemoglobin levels and blood transfusions were recorded during postnatal weeks 1-4. Anaemia was defined as haemoglobin ≤110 g/L. RESULTS During postnatal week 1, infants with severe ROP requiring treatment (28%) more frequently developed anaemia (42.9% versus 8.0%, P = 0.003) and had higher mean EPO levels (postnatal day 7: 14.2 versus 10.8 mIU/mL, P = 0.003) compared to infants with no or less severe ROP not requiring treatment. In multivariable analyses, GA and anaemia during week 1 remained significant risk factors, but elevated EPO level postnatal day 7 was no longer significant. CONCLUSIONS Among infants born <28 weeks GA, anaemia during week 1 was a significant risk factor for severe ROP requiring treatment but not elevated EPO levels.
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Affiliation(s)
- Pia Lundgren
- Section for Ophthalmology, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Gunnel Hellgren
- Department of Clinical Neuroscience, Section for Ophthalmology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | | | - Karin Sävman
- Department of Paediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Lois E. H. Smith
- Department of Ophthalmology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Ann Hellström
- Department of Clinical Neuroscience, Section for Ophthalmology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Isaza G, Donaldson L, Chaudhary V. Increased incidence of retinopathy of prematurity and evolving treatment modalities at a Canadian tertiary centre. Can J Ophthalmol 2019; 54:269-274. [DOI: 10.1016/j.jcjo.2018.05.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 05/07/2018] [Accepted: 05/11/2018] [Indexed: 11/28/2022]
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Keir AK, New H, Robitaille N, Crighton GL, Wood EM, Stanworth SJ. Approaches to understanding and interpreting the risks of red blood cell transfusion in neonates. Transfus Med 2019; 29:231-238. [DOI: 10.1111/tme.12575] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 12/12/2018] [Accepted: 12/13/2018] [Indexed: 02/01/2023]
Affiliation(s)
- A. K. Keir
- Healthy Mothers, Babies and ChildrenThe South Australian Medical and Research Institute North Adelaide South Australia Australia
- Robinson Research Institute and the Adelaide Medical SchoolThe University of Adelaide Adelaide South Australia Australia
| | - H. New
- NHS Blood and Transplant London UK
- Imperial College London London UK
| | - N. Robitaille
- Division of Hematology–Oncology, Department of PediatricsCHU Sainte‐Justine Montréal Quebec Canada
| | - G. L. Crighton
- Department of HaematologyRoyal Children's Hospital Melbourne Victoria Australia
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive MedicineMonash University Melbourne Victoria Australia
| | - E. M. Wood
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive MedicineMonash University Melbourne Victoria Australia
| | - S. J. Stanworth
- NHS Blood and Transplant and Department of HaematologyOxford University Hospitals NHS Foundation Trust Oxford UK
- Radcliffe Department of MedicineUniversity of Oxford Oxford UK
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Bianchi M, Papacci P, Valentini CG, Barbagallo O, Vento G, Teofili L. Umbilical cord blood as a source for red-blood-cell transfusion in neonatology: a systematic review. Vox Sang 2018; 113:713-725. [PMID: 30328121 DOI: 10.1111/vox.12720] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 08/28/2018] [Accepted: 09/20/2018] [Indexed: 02/06/2023]
Abstract
The prevention and treatment of anaemia in newborn patients made tremendous progress in the last decades. However, red-blood-cell (RBC) transfusions remain unavoidable in many neonates candidate to surgery and especially in preterm infants. In particular, anaemia occurring in neonates born at extremely low gestational age is actually severe and frequently requires transfusions. Several approaches have been explored to prevent or even to reduce the threshold and the frequency of RBC transfusions. Among these, umbilical cord blood (UCB) collection and processing to obtain RBC components for autologous or allogeneic transfusion have been extensively investigated. In this systematic review, we revised the literature concerning the use of UCB for either autologous or allogeneic transfusion purposes and we illustrated the rationale for a transfusion therapy tailored to extremely preterm neonates, based on RBC concentrates from allogeneic UCB donations.
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Affiliation(s)
- Maria Bianchi
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Banca del sangue di cordone ombelicale UNICATT, Rome, Italy
| | - Patrizia Papacci
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Università Cattolica del Sacro Cuore, Rome, Italy
- Terapia Intensiva Neonatale, Rome, Italy
| | - Caterina Giovanna Valentini
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Banca del sangue di cordone ombelicale UNICATT, Rome, Italy
| | - Ombretta Barbagallo
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Banca del sangue di cordone ombelicale UNICATT, Rome, Italy
| | - Giovanni Vento
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Università Cattolica del Sacro Cuore, Rome, Italy
- Terapia Intensiva Neonatale, Rome, Italy
| | - Luciana Teofili
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
- Banca del sangue di cordone ombelicale UNICATT, Rome, Italy
- Università Cattolica del Sacro Cuore, Rome, Italy
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Lundgren P, Athikarisamy SE, Patole S, Lam GC, Smith LE, Simmer K. Duration of anaemia during the first week of life is an independent risk factor for retinopathy of prematurity. Acta Paediatr 2018; 107:759-766. [PMID: 29243312 DOI: 10.1111/apa.14187] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/16/2017] [Accepted: 12/07/2017] [Indexed: 12/12/2022]
Abstract
AIM This study evaluated the correlation between retinopathy of prematurity (ROP), anaemia and blood transfusions in extremely preterm infants. METHODS We included 227 infants born below 28 weeks of gestation at King Edward Memorial Hospital, Perth, Australia, from 2014-2016. Birth characteristics and risk factors for ROP were retrieved, and anaemia and severe anaemia were defined as a haemoglobins of <110 g/L and <80 g/L, respectively. Logistic regression was used for the analysis. RESULTS Retinopathy of prematurity treatment was needed in 11% of cases and the mean number of blood transfusions (p < 0.01), and mean number of weeks of anaemia (p < 0.001) and of severe anaemia (p < 0.05), had positive associations with ROP cases warranting treatment. In the multivariate logistic regression analysis, the best-fit model of risk factors included anaemic days during first week of life, with an odds ratio (OR) of 1.46% and 95% confidence interval (CI) of 1.16-1.83 (p < 0.05), sepsis during the first 4 weeks of life (OR 3.14, 95% CI 1.10-9.00, p < 0.05) and days of ventilation (OR 1.03, 95% CI 1.01-1.06, p < 0.05). CONCLUSION The duration of anaemia during the first week of life was an independent risk factor for ROP warranting treatment and preventing early anaemia may decrease this risk.
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Affiliation(s)
- Pia Lundgren
- Centre for Neonatal Research and Education; School of Paediatrics and Child Health; University of Western Australia; Crawley WA Australia
| | - Sam E. Athikarisamy
- Centre for Neonatal Research and Education; School of Paediatrics and Child Health; University of Western Australia; Crawley WA Australia
- Department of Neonatology; Princess Margaret Hospital for Children; Perth WA Australia
- Department of Neonatology; King Edward Memorial Hospital for Women; Perth WA Australia
| | - Sanjay Patole
- Department of Neonatology; Princess Margaret Hospital for Children; Perth WA Australia
- Department of Neonatology; King Edward Memorial Hospital for Women; Perth WA Australia
| | - Geoffrey C. Lam
- Department of Ophthalmology; Princess Margaret Hospital for Children; Perth WA Australia
- Centre for Ophthalmology and Visual Science; University of Western Australia; Perth WA Australia
| | - Lois E. Smith
- Department of Ophthalmology; Boston Children's Hospital; Harvard Medical School; Boston MA USA
| | - Karen Simmer
- Centre for Neonatal Research and Education; School of Paediatrics and Child Health; University of Western Australia; Crawley WA Australia
- Department of Neonatology; Princess Margaret Hospital for Children; Perth WA Australia
- Department of Neonatology; King Edward Memorial Hospital for Women; Perth WA Australia
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Kim SJ, Port AD, Swan R, Campbell JP, Chan RVP, Chiang MF. Retinopathy of prematurity: a review of risk factors and their clinical significance. Surv Ophthalmol 2018; 63:618-637. [PMID: 29679617 DOI: 10.1016/j.survophthal.2018.04.002] [Citation(s) in RCA: 280] [Impact Index Per Article: 46.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 04/05/2018] [Accepted: 04/09/2018] [Indexed: 01/09/2023]
Abstract
Retinopathy of prematurity (ROP) is a retinal vasoproliferative disease that affects premature infants. Despite improvements in neonatal care and management guidelines, ROP remains a leading cause of childhood blindness worldwide. Current screening guidelines are primarily based on two risk factors: birth weight and gestational age; however, many investigators have suggested other risk factors, including maternal factors, prenatal and perinatal factors, demographics, medical interventions, comorbidities of prematurity, nutrition, and genetic factors. We review the existing literature addressing various possible ROP risk factors. Although there have been contradictory reports, and the risk may vary between different populations, understanding ROP risk factors is essential to develop predictive models, to gain insights into pathophysiology of retinal vascular diseases and diseases of prematurity, and to determine future directions in management of and research in ROP.
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Affiliation(s)
- Sang Jin Kim
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, Oregon, USA; Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Alexander D Port
- Department of Ophthalmology, Weill Cornell Medical College, New York, New York, USA
| | - Ryan Swan
- Department of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, Oregon, USA
| | - J Peter Campbell
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - R V Paul Chan
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, Chicago, Illinois, USA; Center for Global Health, College of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Michael F Chiang
- Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, Oregon, USA; Department of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, Oregon, USA.
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Factors associated with retinopathy of prematurity ophthalmology workload. J Perinatol 2018; 38:1588-1593. [PMID: 30171213 PMCID: PMC6214912 DOI: 10.1038/s41372-018-0212-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 08/08/2018] [Indexed: 12/20/2022]
Abstract
OBJECTIVE This article reports on retinopathy of prematurity (ROP) workload in the NICU related to severity of disease, gestational age at discharge, and practice variation. STUDY DESIGN Data analysis on 1771 patients ≤ 30 weeks of gestation at birth from a de-identified data set of 13 NICUs. RESULTS There was a positive relationship between the severity of ROP and (1) the number of exams per patient, (2) the severity of ROP, and (3) postmenstrual age at discharge. The progression between the stages of ROP added to exam workload and postmenstrual age at NICU discharge. The addition of plus disease did not increase the exam burden. There was significant practice variation in the number of exams performed independent of ROP severity. CONCLUSION The progression of the severity of ROP independent of plus disease, and practice variations both contribute to ROP workload. Addressing these factors could decrease ROP workload without compromising American Academy of Pediatrics (AAP) guidelines.
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Recurrence of Retinopathy of Prematurity in Zone II Stage 3+ after Ranibizumab Treatment: A Retrospective Study. J Ophthalmol 2017; 2017:5078565. [PMID: 28491468 PMCID: PMC5401749 DOI: 10.1155/2017/5078565] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 01/26/2017] [Accepted: 02/27/2017] [Indexed: 02/03/2023] Open
Abstract
Objective. To determine the prevalence and risk factors for the recurrence of retinopathy of prematurity (ROP) in Zone II Stage 3+ after ranibizumab treatment. Methods. This was a retrospective, nonrandomized, noncontrolled study that excluded Zone I and aggressive posterior ROP (APROP) cases. Infants who developed Zone II Stage 3 ROP with plus disease and underwent initial intravitreal injection of ranibizumab (IVR) were recruited. Patients were divided into 2 groups based on the outcome after initial ranibizumab treatment: recurrence of ROP or favorable outcome. Data was collected and analyzed by SPSS 16.0. Results. Forty-two patients were included, and 80 eyes with Zone II Stage 3+ were subjected to IVR treatment. Eleven of 42 patients (26.2%, 18 eyes) had a recurrence of ROP after the initial treatment. On univariate analysis, preretinal hemorrhage before treatment was significantly different between the two groups (P = 0.000). Multivariate analysis found that preretinal hemorrhage before treatment was the only factor associated with the recurrence of ROP in our study (P = 0.004). Conclusions. The recurrence rate of ROP in Zone II Stage 3+ after initial ranibizumab treatment was notable and preretinal hemorrhage before treatment was associated with the recurrence of ROP in our study.
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Keir A, Pal S, Trivella M, Lieberman L, Callum J, Shehata N, Stanworth SJ. Adverse effects of red blood cell transfusions in neonates: a systematic review and meta-analysis. Transfusion 2016; 56:2773-2780. [PMID: 27600435 DOI: 10.1111/trf.13785] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 04/28/2016] [Accepted: 06/26/2016] [Indexed: 02/11/2024]
Abstract
BACKGROUND Controversy exists regarding the contribution of blood transfusions to a range of adverse clinical outcomes in neonates. The aim of our systematic review was to identify the broader literature on harmful effects and associations potentially attributable to red blood cell (RBC) transfusions. STUDY DESIGN AND METHODS A comprehensive search of MEDLINE (PubMed) and EMBASE was undertaken. Eligible studies included both randomized controlled trials (RCTs) and nonrandomized studies examining the effects of small volume (10-20 mL/kg) RBC transfusions on neonates. Primary outcomes of interest were mortality, chronic lung disease, retinopathy of prematurity, necrotizing enterocolitis, and intraventricular hemorrhage. Two independent authors conducted a review of abstracts and then of full-text article reviews as well as data extraction and quality assessments. RESULTS Sixty-one studies were eligible for inclusion, including 16 (26%) randomized studies. The majority of studies were nonrandomized (n = 45; 74%), which included 32 observational studies with and 13 studies without a comparator group. There was no evidence that rates of mortality differed between restrictive and liberal strategies for transfusion (eight RCTs: risk ratio, 1.24; 95% confidence interval, 0.89-1.672, heterogeneity = 0%) or for necrotizing enterocolitis (five RCTs: risk ratio, 1.45; 95% confidence interval, 0.91-2.33; heterogeneity = 0%). A liberal strategy also was not superior to restrictive transfusion practice in the pooled randomized studies for rates of retinopathy of prematurity, chronic lung disease, or intraventricular hemorrhage. CONCLUSIONS Statistically significant differences in a range of harmful outcomes between neonates exposed to restrictive and liberal RBC transfusion practice were not found. However, the risks of bias identified in many studies and the lack of consistent reporting and definitions of events limits our conclusions.
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Affiliation(s)
- Amy Keir
- Robinson Research Institute and the School of Medicine, University of Adelaide, Adelaide, Australia
| | - Sanchita Pal
- Rosie Neonatal Unit, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | | | - Lani Lieberman
- Department of Clinical Pathology, University Health Network, Toronto, Canada
- Department of Clinical Pathology, Toronto, Canada
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Canada
| | - Jeannie Callum
- Transfusion Medicine and Tissue Banks, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Nadine Shehata
- Departments of Medicine, and Laboratory Medicine & Pathobiology, University of Toronto and Mount Sinai Hospital, Institute of Health Policy Management and Evaluation, Toronto, Canada
| | - Simon J Stanworth
- NHS Blood & Transplant/Oxford University Hospitals NHS Trust, Oxford, United Kingdom
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Gebeşçe A, Uslu H, Keleş E, Yildirim A, Gürler B, Yazgan H, Baştürk B, Demirdöven M, Tonbul A. Retinopathy of prematurity: incidence, risk factors, and evaluation of screening criteria. Turk J Med Sci 2016; 46:315-20. [PMID: 27511491 DOI: 10.3906/sag-1407-127] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Accepted: 07/04/2015] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND/AIM The goal of this study was to investigate the incidence of retinopathy of prematurity (ROP) and the relationship between risk factors and disease in premature newborns in our neonatal intensive care unit. MATERIALS AND METHODS A total of 219 premature subjects were retrospectively evaluated for retinopathy. Demographic information, clinical data, and risk factors were reviewed. RESULTS The gestational ages of the infants included in the study ranged between 25 and 36 weeks, and the birth weights ranged between 670 and 4460 g. In this study, the incidence of ROP was 20.1% (44) in preterm infants: 16 had stage 1 (36.4%), 15 had stage 2 (34.1%), 11 had stage 3 (25%), 1 had stage 4 (2.3%), 1 had stage 5 (2.3%), and 6 had plus (+) disease (7.2%). The risk factors associated with the development of ROP included low birth weight, ventilation treatment, bronchopulmonary dysplasia, and maternal preeclampsia. The risk factors were analyzed with logistic regression analysis. The odds ratios were 5.952 (95% confidence interval [CI]: 2.030-17.447), 20.070 (95% CI: 4.213-95.600), 5.879 (1.916-18.037), and 3.200 (95% CI: 1.002-11.535), respectively. CONCLUSION In this study, birth weight, ventilation treatment, bronchopulmonary dysplasia, and maternal preeclampsia were the most important risk factors for the development of ROP.
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Affiliation(s)
- Arzu Gebeşçe
- Department of Pediatrics, Faculty of Medicine, Fatih University, İstanbul, Turkey
| | - Haşim Uslu
- Department of Ophthalmology, Faculty of Medicine, Fatih University, İstanbul, Turkey
| | - Esengül Keleş
- Department of Pediatrics, Faculty of Medicine, Fatih University, İstanbul, Turkey
| | - Aydın Yildirim
- Department of Ophthalmology, Faculty of Medicine, Fatih University, İstanbul, Turkey
| | - Bülent Gürler
- Department of Ophthalmology, Faculty of Medicine, Fatih University, İstanbul, Turkey
| | - Hamza Yazgan
- Department of Pediatrics, Faculty of Medicine, Fatih University, İstanbul, Turkey
| | - Bülent Baştürk
- Department of Pediatrics, Faculty of Medicine, Fatih University, İstanbul, Turkey
| | - Mehmet Demirdöven
- Department of Pediatrics, Faculty of Medicine, Fatih University, İstanbul, Turkey
| | - Alparslan Tonbul
- Department of Pediatrics, Faculty of Medicine, Fatih University, İstanbul, Turkey
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Keir AK, Wilkinson D, Andersen C, Stark MJ. Washed versus unwashed red blood cells for transfusion for the prevention of morbidity and mortality in preterm infants. Cochrane Database Syst Rev 2016; 2016:CD011484. [PMID: 26788664 PMCID: PMC8733671 DOI: 10.1002/14651858.cd011484.pub2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Infants born very preterm often receive multiple red blood cell (RBC) transfusions during their initial hospitalisation. However, there is an increasing awareness of potential adverse effects of RBC transfusions in this vulnerable patient population. Modification of RBCs prior to transfusion, through washing with 0.9% saline, may reduce these adverse effects and reduce the rate of significant morbidity and mortality for preterm infants and improve outcomes for this high-risk group. OBJECTIVES To determine whether pre-transfusion washing of RBCs prevents morbidity and mortality in preterm infants. SEARCH METHODS We used the standard search strategy of the Cochrane Neonatal Review Group to search the Cochrane Central Register of Controlled Trials (CENTRAL 2015, Issue 7), MEDLINE via PubMed (31 July 2015), EMBASE (31 July 2015), and CINAHL (31 July 2015). We also searched clinical trials databases, conference proceedings, and the reference lists of retrieved articles for randomised controlled trials and quasi-randomised trials. SELECTION CRITERIA Randomised, cluster randomised, and quasi-randomised controlled trials including preterm infants (less than 32 weeks gestation) or very low birth weight infants (less than 1500 g), or both, who received one or more washed packed RBC transfusions. DATA COLLECTION AND ANALYSIS Two review authors independently assessed the eligibility of the trials. We identified four studies from the initial search. After further review of the full-text studies, we found one study meeting the selection criteria. MAIN RESULTS We included a single study enrolling a total of 21 infants for analysis in this review and reported on all-cause mortality during hospital stay, length of initial neonatal intensive care unit (NICU) stay (days), and duration of mechanical ventilation (days). There was no significant difference in mortality between the washed versus the unwashed RBCs for transfusion groups (risk ratio 1.63, 95% confidence interval (CI) 0.28 to 9.36; risk difference 0.10, 95% CI -0.26 to 0.45). There was no significant difference in the length of initial NICU stay between the washed versus the unwashed RBCs for transfusion groups (mean difference (MD) 25 days, 95% CI -21.15 to 71.15) or the duration of mechanical ventilation between the washed versus the unwashed RBCs for transfusion groups (MD 9.60 days, 95% CI -1.90 to 21.10). AUTHORS' CONCLUSIONS We identified a single small study. The results from this study show a high level of uncertainty, as the confidence intervals are consistent with both a large improvement or a serious harm caused by the intervention. Consequently, there is insufficient evidence to support or refute the use of washed RBCs to prevent the development of significant neonatal morbidities or mortality. Further clinical trials are required to assess the potential effects of pre-transfusion washing of RBCs for preterm or very low birth weight infants, or both, on short- and long-term outcomes.
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Affiliation(s)
- Amy K Keir
- University of AdelaideRobinson Research Institute72 King William RoadAdelaideAustralia
- Women's and Children's HospitalDepartment of Neonatal Medicine72 King William RoadNorth AdelaideAustralia
| | - Dominic Wilkinson
- University of AdelaideRobinson Research Institute72 King William RoadAdelaideAustralia
- University of OxfordOxford Uehiro Centre for Practical EthicsOxfordUK
| | - Chad Andersen
- University of AdelaideRobinson Research Institute72 King William RoadAdelaideAustralia
- Women's and Children's HospitalDepartment of Neonatal Medicine72 King William RoadNorth AdelaideAustralia
| | - Michael J Stark
- University of AdelaideRobinson Research Institute72 King William RoadAdelaideAustralia
- Women's and Children's HospitalDepartment of Neonatal Medicine72 King William RoadNorth AdelaideAustralia
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Alan S, Arsan S. Prevention of the anaemia of prematurity. Int J Pediatr Adolesc Med 2015; 2:99-106. [PMID: 30805447 PMCID: PMC6372412 DOI: 10.1016/j.ijpam.2015.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 10/26/2015] [Accepted: 10/29/2015] [Indexed: 02/08/2023]
Abstract
Despite recent advances in neonatal and perinatal medicine, extremely low birth weight infants (ELBW) are at high risk of developing anaemia of prematurity (AOP) requiring packed red blood cell (RBC) transfusions. The benefit of transfusing allogenic RBCs for AOP is a controversial issue, except for disturbances in tissue oxygenation. Although the role of erythropoietin (EPO) in the pathophysiology of AOP is well known, neither early nor late recombinant human EPO therapy alters the number or volume of RBC transfusions. It is also known that one-half of the feto-placental blood volume remains outside the newborn infant's circulation at 30 weeks of gestation if the umbilical cord is clamped immediately. Delayed cord clamping (DCC) and umbilical cord milking (UCM) are the main methods for enhancing placental transfusion. The basic principle of these approaches depends on providing high haemoglobin (Hb) levels to premature infants in the delivery room. The enhancement of placental transfusion clearly results in higher Hb levels at birth, reducing the need for RBC transfusions as well as creating a better haemodynamic status during the initial hours of life. To date, enhancement of placental transfusion in the delivery room by either DCC or UCM seems to be the best preventive measure for AOP. Yet, studies on the associated neurodevelopmental outcomes are insufficient to reach a conclusion. This review summarizes the pathophysiology, treatment and preventative strategies of anaemia of prematurity in light of the current literature.
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Affiliation(s)
- Serdar Alan
- Division of Neonatology, Department of Pediatrics, Yuksek Ihtisas University School of Medicine, Ankara, Turkey
| | - Saadet Arsan
- Division of Neonatology, Department of Pediatrics, Ankara University School of Medicine, Ankara, Turkey
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Anaemia in the Premature Infant and Red Blood Cell Transfusion: New Approaches to an Age-Old Problem. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/s40746-015-0021-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Chen Y, Xun D, Wang YC, Wang B, Geng SH, Chen H, Li YT, Li XX. Incidence and risk factors of retinopathy of prematurity in two neonatal intensive care units in North and South China. Chin Med J (Engl) 2015; 128:914-8. [PMID: 25836612 PMCID: PMC4834008 DOI: 10.4103/0366-6999.154294] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND To investigate the incidence and risk factors of retinopathy of prematurity (ROP) in two Neonatal Intensive Care Units in North and South of China, respectively. METHODS We studied data concerning 472 infants with gestational age (GA) ≤ 34 weeks or birth weight (BW) ≤ 2000 g who were admitted to the Zhujiang Hospital of Southern Medical University and the Fourth Hospital of Shijiazhuang between January 1, 2011 and December 31, 2011. Clinical information about perinatal neonates was collected and was confirmed by reviewing medical charts. The incidence and severity of ROP were assessed in the screened population. Main outcome measures are the incidence and severity of ROP. The relationship of clinical risk factors and the development of ROP were analyzed. RESULTS The overall incidence of ROP was 12.7%, and the overall incidence of type 1 ROP was 2.3%; 9.4% of infants in Zhujiang Hospital had ROP compared to 15.0% infants in the Fourth Hospital of Shijiazhuang developed ROP, and the difference is statistically significant. ROP was significantly associated with GA (odds ratio [OR]: 0.77 [0.62-0.95], P = 0.015), BW (OR: 0.998 [0.996-0.999], P = 0.008), maternal supplemental oxygen administration before and during delivery (OR: 4.27 [1.21-15.10], P = 0.024) and preeclampsia (OR: 6.07 [1.73-21.36] P = 0.005). The risk factors for ROP are different in two hospitals. In Zhujiang Hospital, BW is the independent risk factors for ROP while GA, BW and preeclampsia in the Fourth Hospital in Shijiazhuang Conclusions: Retinopathy of prematurity incidence is different based on area. Incidence of ROP is still high in China. More efforts need to prevent ROP.
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Affiliation(s)
- Yi Chen
- Department of Ophthalmology, People's Hospital, Peking University, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100044, China
| | - Deng Xun
- Department of Ophthalmology, People's Hospital, Peking University, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100044, China
| | - Ya-Cong Wang
- Department of Ophthalmology, The Fourth Hospital of Shijiazhuang, Shijiazhuang, Hebei 050011, China
| | - Bin Wang
- Department of Pediatric, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510282, China
| | - Shao-Hui Geng
- Department of Ophthalmology, The Fourth Hospital of Shijiazhuang, Shijiazhuang, Hebei 050011, China
| | - Hui Chen
- Department of Pediatric, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510282, China
| | - Yan-Tao Li
- Department of Ophthalmology, The Fourth Hospital of Shijiazhuang, Shijiazhuang, Hebei 050011, China
| | - Xiao-Xin Li
- Department of Ophthalmology, People's Hospital, Peking University, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100044, China
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Bianchi M, Giannantonio C, Spartano S, Fioretti M, Landini A, Molisso A, Tesfagabir GM, Tornesello A, Barbagallo O, Valentini CG, Vento G, Zini G, Romagnoli C, Papacci P, Teofili L. Allogeneic umbilical cord blood red cell concentrates: an innovative blood product for transfusion therapy of preterm infants. Neonatology 2015; 107:81-6. [PMID: 25401961 DOI: 10.1159/000368296] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Accepted: 09/11/2014] [Indexed: 11/19/2022]
Abstract
BACKGROUND Preterm infants often receive blood transfusions early in life. In this setting, umbilical cord blood (UCB) might be safer than adult blood (A) with respect to infectious and immunologic threats. OBJECTIVES To evaluate, as a first objective, the feasibility of fulfilling transfusion needs of preterm infants with allogeneic UCB red blood cell (RBC) concentrates and, as a secondary objective, to assess the safety of allogeneic cord blood transfusions. METHODS At the Neonatal Intensive Care Unit and the UNICATT Cord Blood Bank of 'A. Gemelli' Hospital in Rome, a prospective study was carried out over a 1-year period, enrolling newborns with gestational age ≤30 weeks and/or birth weight ≤1,500 g requiring RBC transfusions within the first 28 days of life. At first transfusion, patients were assigned to receive UCB-RBCs or A-RBCs depending on the availability of ABO-Rh(D)-matched UCB-RBC units. The same regimen (UCB-RBC or A-RBC units) was thereafter maintained, unless ABO-Rh(D)-matched UCB-RBC units were not available. RESULTS Overall, 23 UCB-RBC units were transfused to 9 patients; the requests for UCB-RBC units were met in 45% of patients at the first transfusion and in 78% at the subsequent transfusions. At a median follow-up of 57 days (range 6-219), no acute or delayed transfusion-related adverse events occurred. Hematocrit gain after transfusion and time intervals between transfusions were similar in the UCB-RBC and A-RBC group, as well. CONCLUSIONS Transfusing allogeneic UCB-RBC units in preterm infants appears a feasible and safe approach, although the transfusion needs of our study population were not completely covered. More data are necessary to validate this novel transfusion practice.
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Affiliation(s)
- Maria Bianchi
- UNICATT Cord Blood Bank, 'A. Gemelli' Hospital, Università Cattolica del Sacro Cuore, Rome, Italy
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Keir A, Pal S, Trivella M, Lieberman L, Callum J, Shehata N, Stanworth S. Adverse effects of small-volume red blood cell transfusions in the neonatal population. Syst Rev 2014; 3:92. [PMID: 25143009 PMCID: PMC4149676 DOI: 10.1186/2046-4053-3-92] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 08/13/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Adverse transfusion reactions in the neonatal population are poorly understood and defined. The incidence and pattern of adverse effects due to red blood cell (RBC) transfusion are not well known, and there has been no systematic review of published adverse events. RBC transfusions continue to be linked to the development of morbidities unique to neonates, including chronic lung disease, retinopathy of prematurity, intraventricular haemorrhage and necrotising enterocolitis. Uncertainties about the exact nature of risks alongside benefits of RBC transfusion may contribute to evidence of widespread variation in neonatal RBC transfusion practice.Our review aims to describe clinical adverse effects attributed to small-volume (10-20 mL/kg) RBC transfusions and, where possible, their incidence rates in the neonatal population through the systematic identification of all relevant studies. METHODS A comprehensive search of the following bibliographic databases will be performed: MEDLINE (PubMed/OVID which includes the Cochrane Library) and EMBASE (OVID). The intervention of interest is small-volume (10-20 mL/kg) RBC transfusions in the neonatal population.We will undertake a narrative synthesis of the evidence. If clinical similarity and data quantity and quality permit, we will also carry out meta-analyses on the listed outcomes. DISCUSSION This systematic review will identify and synthesise the reported adverse effects and associations of RBC transfusions in the neonatal population. We believe that this systematic review is timely and will make a valuable contribution to highlight an existing research gap. TRIAL REGISTRATION PROSPERO, CRD42013005107http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=CRD42013005107.
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Affiliation(s)
- Amy Keir
- School of Paediatrics and Reproductive Health, University of Adelaide, Adelaide 5005, Australia
- Department of Neonatal Medicine, Level 1 Queen Victoria Building, Women's and Children's Hospital, 72 King William Road, North Adelaide, South Australia 5006, Australia
| | - Sanchita Pal
- Rosie Neonatal Unit, Cambridge University Hospitals NHS Foundation Trust Cambridge, Cambridge CB2 0QQ, UK
| | - Marialena Trivella
- Centre for Statistics in Medicine, University of Oxford, Oxford OX2 6UD, UK
| | - Lani Lieberman
- Transfusion Medicine, University Health Network, Toronto M5G 2N2, Canada
- Department of Clinical Pathology, University of Toronto, Toronto M5G 2M9, Canada
| | - Jeannie Callum
- Transfusion Medicine and Tissue Banks, Sunnybrook Health Sciences Centre, Toronto M4N 3M5, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A1, Canada
| | - Nadine Shehata
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto M5S 1A1, Canada
- Department of Medicine, Mount Sinai Hospital, Toronto M5G 1X5, Canada
| | - Simon Stanworth
- National Health Service Blood and Transplant/Oxford University Hospitals NHS Trust, Oxford OX3 9DU, UK
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20
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Christensen RD, Ilstrup SJ, Hartnett ME. Retinopathy of prematurity and transfusion practice. Transfusion 2014; 54:960-1. [PMID: 24724787 DOI: 10.1111/trf.12510] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Abstract
The immature retinas of preterm neonates are susceptible to insults that disrupt neurovascular growth, leading to retinopathy of prematurity. Suppression of growth factors due to hyperoxia and loss of the maternal-fetal interaction result in an arrest of retinal vascularisation (phase 1). Subsequently, the increasingly metabolically active, yet poorly vascularised, retina becomes hypoxic, stimulating growth factor-induced vasoproliferation (phase 2), which can cause retinal detachment. In very premature infants, controlled oxygen administration reduces but does not eliminate retinopathy of prematurity. Identification and control of factors that contribute to development of retinopathy of prematurity is essential to prevent progression to severe sight-threatening disease and to limit comorbidities with which the disease shares modifiable risk factors. Strategies to prevent retinopathy of prematurity will depend on optimisation of oxygen saturation, nutrition, and normalisation of concentrations of essential factors such as insulin-like growth factor 1 and ω-3 polyunsaturated fatty acids, as well as curbing of the effects of infection and inflammation to promote normal growth and limit suppression of neurovascular development.
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Affiliation(s)
- Ann Hellström
- Department of Ophthalmology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
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22
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Isaza G, Arora S, Bal M, Chaudhary V. Incidence of retinopathy of prematurity and risk factors among premature infants at a neonatal intensive care unit in Canada. J Pediatr Ophthalmol Strabismus 2013. [PMID: 23205771 DOI: 10.3928/01913913-20121127-02] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
PURPOSE To study the incidence of retinopathy of prematurity (ROP) in a neonatal intensive care unit and obtain information on risk factors associated with ROP. METHODS Four hundred twenty-three infants were screened for ROP between July 2006 and July 2010. Demographic information, clinical data, and risk factors were reviewed. RESULTS The incidence was 40.4% (171 infants) for ROP, 9.2% (39 infants) for severe ROP, and 5.67% (24 infants) for laser treatment. Mean gestational age and birth weight were significantly lower among infants with ROP versus those without ROP (26 ± 0.13 vs 28.55 ± 0.12 weeks, P < .0001 and 840.5 ±17.49 vs 1,190.24 ± 20.20 g, P < .0001, respectively). Birth weight (P < .001), gestational age (P < .001), mechanical ventilation therapy (P = .039), and necrotizing enterocolitis (P = .019) were independent risk factors for ROP. CONCLUSION Gestational age and birth weight were the most significant risk factors for developing ROP. The study population had an elevated percentage of infants with birth weight less than 1,000 g (extremely low birth weight), yet there was no corresponding increase in severe ROP incidence and treatment when compared to other studies.
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Affiliation(s)
- Gloria Isaza
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
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Rukholm G, Farrokhyar F, Reid D. Vocal cord paralysis post patent ductus arteriosus ligation surgery: risks and co-morbidities. Int J Pediatr Otorhinolaryngol 2012; 76:1637-41. [PMID: 22959601 DOI: 10.1016/j.ijporl.2012.07.036] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Revised: 07/28/2012] [Accepted: 07/28/2012] [Indexed: 10/27/2022]
Abstract
OBJECTIVES 1. To determine the prevalence of left vocal cord paralysis (LVCP) post patent ductus arteriosus (PDA) ligation at a Tertiary Care Centre. 2. To identify risk factors associated with LVCP. 3. To identify co-morbidities associated with LVCP. 4. To determine the frequency of pre- and post-operative nasopharyngolaryngoscopic (NPL) examination in this patient population. METHODS Retrospective chart review of all infants who underwent PDA ligation surgery at a tertiary care academic hospital between July 2003 and July 2010. Data on patient age, gender, weight, method of PDA ligation, and results of NPL scoping were collected, as well as patient co-morbidities post PDA ligation. RESULTS One hundred and fifteen patients underwent PDA ligation surgery. Four patients were excluded due to bilateral vocal cord paralysis. Of the remaining 111 patients, nineteen patients (17.1%) were found to have LVCP. Low birth weight was identified as a significant risk factor for LVCP (p=0.002). Gastroesophageal reflux was identified as a significant co-morbidity associated with LVCP post PDA ligation (p=0.002). Only 0.9% of patients were scoped pre-operatively, and 27.9% were scoped postoperatively. CONCLUSIONS LVCP is associated with multiple morbidities. The authors strongly recommend routine post-operative scoping of all patients post PDA ligation surgery, and preoperative scoping when possible. A prospective study is warranted, in order to confirm the prevalence of LVCP as well as risk factors and associated co-morbidities.
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Affiliation(s)
- Gavin Rukholm
- McMaster University Medical Centre, Department of Otolaryngology, Head and Neck Surgery, 1200 Main St. West, Hamilton, ON, L8N 3Z5, Canada.
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Carroll PD, Widness JA. Nonpharmacological, blood conservation techniques for preventing neonatal anemia--effective and promising strategies for reducing transfusion. Semin Perinatol 2012; 36:232-43. [PMID: 22818543 PMCID: PMC3703659 DOI: 10.1053/j.semperi.2012.04.003] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The development of anemia after birth in very premature, critically ill newborn infants is a universal well-described phenomenon. Although preventing anemia in this population, along with efforts to establish optimal red blood cell (RBC) transfusion and pharmacologic therapy continue to be actively investigated, the present review focuses exclusively on nonpharmacological approaches to the prevention and treatment of neonatal anemia. We begin with an overview of topics relevant to nonpharmacological techniques. These topics include neonatal and fetoplacental hemoglobin levels and blood volumes, clinical and laboratory practices applied in critically ill neonates, and current RBC transfusion practice guidelines. This is followed by a discussion of the most effective and promising nonpharmacological blood conservation strategies and techniques. Fortunately, many of these techniques are feasible in most neonatal intensive care units. When applied together, these techniques are more effective than existing pharmacotherapies in significantly decreasing neonatal RBC transfusions. They include increasing hemoglobin endowment and circulating blood volume at birth; removing less blood for laboratory testing; and optimizing nutrition.
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Affiliation(s)
- Patrick D. Carroll
- Women and Newborns Program, Intermountain Healthcare, Division of Neonatology, Dixie Regional Medical Center, St George, UT
| | - John A. Widness
- Department of Pediatrics, Roy J. and Lucille A. Carver College of Medicine, The University of Iowa, Iowa City, IA
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