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Article: Progression of type 2 to type 1 retinopathy of prematurity in the Early Treatment for Retinopathy of Prematurity Study

TitleProgression of type 2 to type 1 retinopathy of prematurity in the Early Treatment for Retinopathy of Prematurity Study
Authors
Issue Date2010
PublisherAmerican Medical Association. The Journal's web site is located at http://www.archopthalmol.com
Citation
Archives of Ophthalmology, 2010, v. 128 n. 4, p. 461-465 How to Cite?
AbstractOBJECTIVE: To examine the frequency and timing of progression from type 2 to type 1 retinopathy of prematurity (ROP) in the Early Treatment for Retinopathy of Prematurity Study. METHODS: Infants with prethreshold ROP that was no worse than low risk in 1 or both eyes, based on the RM-ROP2 model, were examined every 2 to 4 days for at least 2 weeks. Using the Early Treatment for Retinopathy of Prematurity Study-defined classification of eyes as having type 1 or type 2 prethreshold ROP, we analyzed the time to conversion from type 2 to type 1. Data were analyzed for 1 randomly selected eye for each child. RESULTS: Of 294 eyes at first diagnosis of type 2 ROP, 65 (22.1%) progressed to type 1 (mean [SD] interval, 9.0 [6.6] days; median, 7.0 days). Of 217 eyes with type 2 ROP that had an examination in less than 7 days, 25 (11.5%) were diagnosed with type 1 ROP in less than 7 days. Of 200 eyes that continued to have type 2 disease at the first follow-up examination and underwent a subsequent examination, 24 (15.7% of the 153 eyes that had an examination in <7 days) developed type 1 ROP in less than 7 days. The risk of progression from type 2 to type 1 in less than 7 days was greatest between 33 and 36 weeks' postmenstrual age, regardless of zone of retinopathy. CONCLUSIONS: Type 1 ROP can be identified with weekly examinations in most eyes with initial diagnosis of type 2 ROP; a small subset progresses to type 1 in less than 7 days. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00027222.
DescriptionWico Waikwan Lai is one of the members of ETROP Cooperative Group; A list of the Early Treatment for Retinopathy of Prematurity Cooperative Group members was published in Arch Ophthalmol. 2003;121(12):1684-1694
Persistent Identifierhttp://hdl.handle.net/10722/127672
ISSN
2014 Impact Factor: 4.399
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChristiansen, SPen_HK
dc.contributor.authorDobson, V-
dc.contributor.authorQuinn, GE-
dc.contributor.authorGood, WV-
dc.contributor.authorTung, B-
dc.contributor.authorHardy, RJ-
dc.contributor.authorBaker, JD-
dc.contributor.authorHoffman, RO-
dc.contributor.authorReynolds, JD-
dc.contributor.authorRychwalski, PJ-
dc.contributor.authorShapiro, MJ-
dc.contributor.authorEarly Treatment for Retinopathy of Prematurity Cooperative Group-
dc.contributor.authorLai, WW-
dc.date.accessioned2010-10-31T13:39:21Z-
dc.date.available2010-10-31T13:39:21Z-
dc.date.issued2010en_HK
dc.identifier.citationArchives of Ophthalmology, 2010, v. 128 n. 4, p. 461-465en_HK
dc.identifier.issn0003-9950en_HK
dc.identifier.urihttp://hdl.handle.net/10722/127672-
dc.descriptionWico Waikwan Lai is one of the members of ETROP Cooperative Group; A list of the Early Treatment for Retinopathy of Prematurity Cooperative Group members was published in Arch Ophthalmol. 2003;121(12):1684-1694-
dc.description.abstractOBJECTIVE: To examine the frequency and timing of progression from type 2 to type 1 retinopathy of prematurity (ROP) in the Early Treatment for Retinopathy of Prematurity Study. METHODS: Infants with prethreshold ROP that was no worse than low risk in 1 or both eyes, based on the RM-ROP2 model, were examined every 2 to 4 days for at least 2 weeks. Using the Early Treatment for Retinopathy of Prematurity Study-defined classification of eyes as having type 1 or type 2 prethreshold ROP, we analyzed the time to conversion from type 2 to type 1. Data were analyzed for 1 randomly selected eye for each child. RESULTS: Of 294 eyes at first diagnosis of type 2 ROP, 65 (22.1%) progressed to type 1 (mean [SD] interval, 9.0 [6.6] days; median, 7.0 days). Of 217 eyes with type 2 ROP that had an examination in less than 7 days, 25 (11.5%) were diagnosed with type 1 ROP in less than 7 days. Of 200 eyes that continued to have type 2 disease at the first follow-up examination and underwent a subsequent examination, 24 (15.7% of the 153 eyes that had an examination in <7 days) developed type 1 ROP in less than 7 days. The risk of progression from type 2 to type 1 in less than 7 days was greatest between 33 and 36 weeks' postmenstrual age, regardless of zone of retinopathy. CONCLUSIONS: Type 1 ROP can be identified with weekly examinations in most eyes with initial diagnosis of type 2 ROP; a small subset progresses to type 1 in less than 7 days. TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00027222.-
dc.languageengen_HK
dc.publisherAmerican Medical Association. The Journal's web site is located at http://www.archopthalmol.com-
dc.relation.ispartofArchives of Ophthalmologyen_HK
dc.subject.meshDisease Progression-
dc.subject.meshGestational Age-
dc.subject.meshInfant, Newborn-
dc.subject.meshInfant, Premature-
dc.subject.meshRetinopathy of Prematurity - classification - diagnosis - physiopathology-
dc.titleProgression of type 2 to type 1 retinopathy of prematurity in the Early Treatment for Retinopathy of Prematurity Studyen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0003-9950&volume=128&issue=4&spage=461&epage=465&date=2010&atitle=Progression+of+type+2+to+type+1+retinopathy+of+prematurity+in+the+Early+Treatment+for+Retinopathy+of+Prematurity+Studyen_HK
dc.identifier.emailLai, WW: wicolai@hku.hken_HK
dc.identifier.authorityLai, WWK=rp00531en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1001/archophthalmol.2010.34-
dc.identifier.pmid20385942-
dc.identifier.scopuseid_2-s2.0-77950791951-
dc.identifier.hkuros181488en_HK
dc.identifier.hkuros192860-
dc.identifier.volume128en_HK
dc.identifier.issue4en_HK
dc.identifier.spage461en_HK
dc.identifier.epage465en_HK
dc.identifier.isiWOS:000276560800011-

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