S J Woo1, K H Park, J Ahn, K J Oh, S Y Lee, E H Jeong, K H Park. 1. Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
Abstract
PURPOSE: To determine the relative effect of birth weight and gestational age on retinopathy of prematurity (ROP) using preterm twin pairs discordant for birth weight. METHODS: This study was a retrospective cohort study including 55 consecutive twin pairs of 110 preterm infants (gestational age ≤33 weeks). The outcomes of ROP including occurrence (any stage), severe ROP (stage 3 or more), and clinically significant ROP requiring laser treatment were compared between twins with the lower birth weight from each pair and their co-twins with the higher birth weight. Using twin pairs having different birth weight and identical gestational age, the independent effects of prematurity and intrauterine growth on ROP could be evaluated. Other perinatal morbidities related to prematurity were also compared between twin pairs. RESULTS: No significant differences in ROP between larger and smaller infants were observed in the twin-paired analysis while analysis on individual infants showed strong association between small birth weight and ROP outcomes. However, in both the larger and smaller infant groups, gestational age of <28 weeks was significantly associated with ROP outcomes. No differences were found between twin pairs regarding other perinatal morbidities including bronchopulmonary dysplasia, respiratory distress syndrome, patent ductus arteriosus, intraventricular hemorrhage, and periventricular leukomalacia. CONCLUSIONS: Birth weight is not associated with ROP, while gestational age is in the twin-paired study, suggesting that gestational age is a better predictor of ROP than birth weight. This indicates that maturity is more important in the pathogenesis of ROP than intrauterine growth.
PURPOSE: To determine the relative effect of birth weight and gestational age on retinopathy of prematurity (ROP) using preterm twin pairs discordant for birth weight. METHODS: This study was a retrospective cohort study including 55 consecutive twin pairs of 110 preterm infants (gestational age ≤33 weeks). The outcomes of ROP including occurrence (any stage), severe ROP (stage 3 or more), and clinically significant ROP requiring laser treatment were compared between twins with the lower birth weight from each pair and their co-twins with the higher birth weight. Using twin pairs having different birth weight and identical gestational age, the independent effects of prematurity and intrauterine growth on ROP could be evaluated. Other perinatal morbidities related to prematurity were also compared between twin pairs. RESULTS: No significant differences in ROP between larger and smaller infants were observed in the twin-paired analysis while analysis on individual infants showed strong association between small birth weight and ROP outcomes. However, in both the larger and smaller infant groups, gestational age of <28 weeks was significantly associated with ROP outcomes. No differences were found between twin pairs regarding other perinatal morbidities including bronchopulmonary dysplasia, respiratory distress syndrome, patent ductus arteriosus, intraventricular hemorrhage, and periventricular leukomalacia. CONCLUSIONS: Birth weight is not associated with ROP, while gestational age is in the twin-paired study, suggesting that gestational age is a better predictor of ROP than birth weight. This indicates that maturity is more important in the pathogenesis of ROP than intrauterine growth.
Authors: L Gortner; R R Wauer; G J Stock; H L Reiter; I Reiss; G Jorch; R Hentschel; G Hieronimi Journal: J Perinat Med Date: 1999 Impact factor: 1.901
Authors: Brian A Darlow; Jolie L Hutchinson; David J Henderson-Smart; Deborah A Donoghue; Judy M Simpson; Nicholas J Evans Journal: Pediatrics Date: 2005-04 Impact factor: 7.124
Authors: Melissa Catenacci; Shogo Miyagi; Andrea C Wickremasinghe; Sarah Scarpace Lucas; Alejandra G de Alba Campomanes; William V Good; Ronald I Clyman Journal: J Pediatr Date: 2013-03-01 Impact factor: 4.406
Authors: Pia Lundgren; Anna Kistner; Eva M Andersson; Ingrid Hansen Pupp; Gerd Holmström; David Ley; Aimon Niklasson; Lois E H Smith; Carolyn Wu; Ann Hellström; Chatarina Löfqvist Journal: PLoS One Date: 2014-10-15 Impact factor: 3.240
Authors: Gordon S K Yau; Jacky W Y Lee; Victor T Y Tam; Stan Yip; Edith Cheng; Catherine C L Liu; Benjamin C Y Chu; Can Y F Yuen Journal: ScientificWorldJournal Date: 2014-10-23
Authors: Gordon S K Yau; Jacky W Y Lee; Victor T Y Tam; Catherine C L Liu; Ian Y H Wong Journal: Medicine (Baltimore) Date: 2014-12 Impact factor: 1.889