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1.
Am J Perinatol ; 2023 Jul 24.
Artigo em Inglês | MEDLINE | ID: mdl-37339675

RESUMO

OBJECTIVE: Retinopathy of prematurity (ROP) is detected in preterm infants by standardized screening programs, but in general, they have poor sensitivity. The Postnatal Growth and Retinopathy of Prematurity (G-ROP) algorithm uses weight gain to predict ROP superior reported sensitivity. Our objectives are to (1) independently validate the sensitivity of G-ROP criteria for the detection of ROP in infants born at >28 weeks' gestation in a tertiary care unit in the United States and (2) to calculate the cost savings associated with a potential reduction in examinations. STUDY DESIGN: This is a retrospective analysis of retinal screening examination data, with post-hoc application of G-ROP criteria to determine whether G-ROP criteria had acceptable sensitivity and specificity in diagnosing Type 1 and Type 2 ROP. All infants born at >28 weeks who were screened by current American Academy of Pediatric Ophthalmologists/American Academy of Pediatrics guidelines at Oklahoma Children's Hospital at the University of Oklahoma Health Sciences Center, between 2014 and 2019, were included. Subset analysis of infants screened by second tier criteria was also performed. Potential cost savings were estimated by analyzing frequency of billing codes. And by calculating the number of infants who could have potentially been spared examination. RESULTS: The G-ROP criteria had 100% sensitivity in detecting type 1 and 87.6% sensitivity in detecting type 2 ROP, which would have reduced infants screened by 50%. All infants in the second tier who would require treatment were detected. A cost saving of 49% was projected. CONCLUSION: The G-ROP criteria are easy to apply in real-world setting, thus establishing feasibility. The algorithm identified all cases of type 1 ROP; however, some cases of type 2 ROP were not detected. The annual savings in hospital examination cost by using these criteria would be 50%. Therefore, G-ROP criteria can safely be used to screen for ROP and may reduce the number of unnecessary examinations. KEY POINTS: · The G-ROP screening criteria are safe and predict 100% of treatment warranted ROP.. · Adoption of G-ROP criteria is feasible for level IV NICUs.. · Adoption of G-ROP screening guidelines will result in significant cost savings..

2.
Zhongguo Dang Dai Er Ke Za Zhi ; 22(5): 396-408, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32434631

RESUMO

There is a widespread shortage of physicians worldwide, especially in rural areas. This shortage is more prevalent when it comes to subspecialty care, even in developed countries. One way to provide access to specialty care is using technology via telemedicine. Telemedicine has evolved over the last two decades, and its use is becoming widespread in developed countries. However, its use in the neonatal population is still limited and practiced only in some centers. It is now apparent that telemedicine can be successfully used in the neonatal population for screening premature infants for retinopathy of prematurity, congenital heart disease, bedside clinical rounds, neonatal resuscitation with the support of a tertiary care hospital, and family support. This avoids unnecessary transfer and appears to provide the same quality of care that the baby would have received at the tertiary care facility. This approach also improves family satisfaction, as the baby and the mother are kept together, and reduces the cost of care. This review focuses on the use of telemedicine in neonatal care, concentrating on the main areas where telemedicine has been shown to be successful and effective, including the status of telemedicine in China.


Assuntos
Neonatologia , Telemedicina , China , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Programas de Rastreamento
4.
Ophthalmology ; 124(3): 374-381, 2017 03.
Artigo em Inglês | MEDLINE | ID: mdl-27986386

RESUMO

PURPOSE: To describe the clinical characteristics of intraocular hemorrhages (IOHs) in infants in the Telemedicine Approaches to Evaluating Acute-Phase Retinopathy of Prematurity (e-ROP) Study and to evaluate their potential use for prediction of disease severity. DESIGN: Secondary data analysis from a prospective study. PARTICIPANTS: Preterm infants with birth weight (BW) ≤1250 g. METHODS: Infants underwent serial digital retinal imaging in both eyes starting at 32 weeks' postmenstrual age. Nonphysician trained readers (TRs) evaluated all image sets from eyes that ever had IOHs documented on image evaluation or eye examination for the presence, location, type, area, and relation of the IOH to the junction between vascularized and avascular retina. Associations of IOH with demographic and neonatal factors, and with the presence and severity of retinopathy of prematurity (ROP) were investigated by univariate and multivariate analyses. Sensitivity and specificity of the telemedicine system for detecting referral-warranted ROP (RW-ROP) were calculated with and without incorporating hemorrhage into the standardized grading protocol. MAIN OUTCOME MEASURES: Retinal and vitreous hemorrhage. RESULTS: Among 1239 infants (mean [standard deviation] BW = 864 [212] g; gestational age [GA] = 27 [2.2] weeks) who underwent an average of 3.2 imaging sessions, 22% had an IOH in an eye on at least 1 of the e-ROP visits. Classification of IOH was preretinal (57%), blot (57%), dot (38%), flame-shaped (16%), and vitreous (8%); most IOHs were unilateral (70%). The IOH resolved in 35% of eyes by the next imaging session and in the majority (76%) of cases by 8 weeks after initial detection. Presence of IOH was inversely associated with BW and GA and significantly associated (P < 0.0001) with the presence and severity of ROP (BW and GA adjusted odds ratios [ORs] of 2.46 for any ROP, 2.88 for stage 3, and 3.19 for RW-ROP). Incorporating IOH into the grading protocol minimally altered the sensitivity of the system (94% vs. 95%). CONCLUSIONS: Approximately 1 in 5 preterm infants examined had IOHs, generally unilateral. The presence of hemorrhage was directly correlated with both presence and severity of ROP and inversely correlated with BW and GA, although including hemorrhage in the grading algorithm only minimally improved the sensitivity of the telemedicine system to detect RW-ROP.


Assuntos
Diagnóstico por Imagem/métodos , Triagem Neonatal/métodos , Hemorragia Retiniana/diagnóstico , Retinopatia da Prematuridade/diagnóstico , Telemedicina/métodos , Hemorragia Vítrea/diagnóstico , Doença Aguda , Peso ao Nascer , Estudos de Coortes , Feminino , Idade Gestacional , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Recém-Nascido de muito Baixo Peso , Masculino , Oftalmoscopia/métodos , Estudos Prospectivos , Hemorragia Retiniana/fisiopatologia , Retinopatia da Prematuridade/classificação , Retinopatia da Prematuridade/fisiopatologia , Fatores de Risco , Sensibilidade e Especificidade , Hemorragia Vítrea/fisiopatologia
5.
Ophthalmology ; 123(9 Suppl): S25-9, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-27549998

RESUMO

Over the course of a century, American medical specialty boards including the American Board of Ophthalmology (ABO) have developed significant expertise in assessing physician competence on completion of postgraduate training and, more recently, in defining appropriate criteria for continuous learning and quality improvement in practicing physicians. This article explores why maintaining career-long excellence is an evolving challenge, but one that is at the heart of the ABO's mission to protect the public by improving patient care.


Assuntos
Certificação/história , Educação Médica Continuada/normas , Oftalmologia , Conselhos de Especialidade Profissional/história , Competência Clínica/normas , História do Século XX , História do Século XXI , Humanos , Oftalmologia/educação , Oftalmologia/história , Melhoria de Qualidade/história , Estados Unidos
7.
Ophthalmology ; 123(7): 1595-600, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-27084562

RESUMO

PURPOSE: To compare infant and retinopathy of prematurity (ROP) characteristics from 3 clinical studies conducted over a 27-year period in the United States. DESIGN: Secondary analysis of results of 3 clinical studies. PARTICIPANTS: Infants with birth weight (BW) <1251 g. METHODS: Analysis of data from the Cryotherapy for Retinopathy of Prematurity (CRYO-ROP) and Early Treatment for Retinopathy of Prematurity (ETROP) trials and the primary data from the Telemedicine Approaches for the Evaluation of Acute-Phase Retinopathy of Prematurity (e-ROP) study. MAIN OUTCOME MEASURES: Infant characteristics and onset, severity, and time course of ROP. RESULTS: Across the 3 studies, mean (standard deviation) BW and mean gestational age (GA) decreased over time from CRYO-ROP (954 g [185 g], 27.9 weeks [2.2 weeks]) to ETROP (907 g [205 g], 27.4 weeks [2.2 weeks]) to e-ROP (864 g [212 g], 27.0 weeks [2.2 weeks]), with an increase in the percentage of infants enrolled weighing <750 g (15.8% CRYO, 24.9% ETROP, 33.4% e-ROP; P<0.0001). The percentage of infants who developed ROP varied only minimally (65.8% CRYO, 68.0% ETROP, 63.7% e-ROP; P = 0.003). Moderately severe ROP (defined as prethreshold or referral warranted) varied (17.8% CRYO, 12.3% ETROP, 19.4% e-ROP; P<0.0001), whereas the time of onset of any ROP did not vary (34.3 weeks CRYO, 34.1 weeks ETROP, 34.8 weeks e-ROP). CONCLUSIONS: The BW and GA of infants enrolled in ROP studies in the United States have decreased over the past 27 years, whereas ROP prevalence and onset of disease are stable.


Assuntos
Retinopatia da Prematuridade/epidemiologia , Feminino , Idade Gestacional , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Recém-Nascido de muito Baixo Peso , Masculino , Prevalência , Fatores de Risco , Estados Unidos/epidemiologia
9.
Ophthalmology ; 122(5): 874-81, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25676904

RESUMO

OBJECTIVE: To assess the efficacy and short-term safety of levodopa as adjunctive treatment to patching for amblyopia. DESIGN: Randomized, placebo-controlled trial. PARTICIPANTS: One hundred thirty-nine children 7 to 12 years of age with residual amblyopia resulting from strabismus, anisometropia, or both combined (visual acuity [VA], 20/50-20/400) after patching. METHODS: Sixteen weeks of oral levodopa or placebo administered 3 times daily while patching the fellow eye 2 hours daily. MAIN OUTCOME MEASURES: Mean change in best-corrected amblyopic-eye VA at 18 weeks. RESULTS: At 18 weeks, amblyopic-eye VA improved from randomization by an average of 5.2 letters in the levodopa group and by 3.8 letters in the placebo group (difference adjusted for baseline VA, +1.4 letters; 1-sided P=0.06; 2-sided 95% confidence interval, -0.4 to 3.3 letters). No serious adverse effects from levodopa were reported during treatment. CONCLUSIONS: For children 7 to 12 years of age with residual amblyopia after patching therapy, oral levodopa while continuing to patch 2 hours daily does not produce a clinically or statistically meaningful improvement in VA compared with placebo and patching.


Assuntos
Ambliopia/terapia , Bandagens , Dopaminérgicos/uso terapêutico , Levodopa/uso terapêutico , Administração Oral , Ambliopia/etiologia , Ambliopia/fisiopatologia , Anisometropia/complicações , Criança , Feminino , Seguimentos , Humanos , Masculino , Estrabismo/complicações , Resultado do Tratamento , Acuidade Visual/fisiologia
10.
J AAPOS ; 27(3): 142.e1-142.e6, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37179001

RESUMO

PURPOSE: To assess ocular alignment outcomes and their stability for patients who underwent strabismus surgery for abducens nerve palsy and to identify preoperative patient variables that predict surgical success or repeated surgeries. METHODS: We retrospectively reviewed the medical records of patients diagnosed with abducens nerve palsy and who subsequently underwent strabismus surgery. RESULTS: A total of 209 patients (386 procedures) were included. The mean number of surgeries for patients was 1.9 ± 1.4. Success was achieved after a single surgery for 112 patients (53.6%), and success was achieved for an additional 42 patients, for a total of 154 patients (73.7%), following all surgeries. Preoperative abduction deficit severity was the only variable predictive of surgical success, with mild deficits having the highest odds of both initial success (OR = 5.555; CI, 2.722-11.336) and final success (OR = 5.294; 95% CI, 1.931-14.512). When analyzing survival time until additional surgery, the median survival was 406 days; abduction deficit severity, older age, other coincidental motility abnormalities, greater magnitude esotropia, and surgical technique were predictive of repeat surgical incidence. CONCLUSIONS: In our patient cohort, preoperative abduction deficit was an important predictor of both surgical success and repeat surgical incidence for abducens nerve palsy. Older patient age, additional motility abnormalities, and greater amounts of baseline strabismus were also associated with greater likelihood of multiple surgeries.


Assuntos
Doenças do Nervo Abducente , Estrabismo , Humanos , Estudos Retrospectivos , Procedimentos Cirúrgicos Oftalmológicos/métodos , Doenças do Nervo Abducente/cirurgia , Estrabismo/cirurgia , Estrabismo/complicações , Resultado do Tratamento
12.
J Neuroophthalmol ; 32(3): 202-6, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22549560

RESUMO

BACKGROUND: We tested the hypothesis that patients with diabetes mellitus (DM) develop biopsy-positive giant cell arteritis (GCA) significantly less frequently than nondiabetic patients. METHODS: We compared the prevalence of DM in patients with positive temporal artery biopsy (TAB) with that in patients with negative TAB via a retrospective study of 215 patients who underwent TAB. Patients were classified as having biopsy-positive GCA if microscopic examination disclosed active or healed arteritis. Patients were classified as having DM if they had a diagnosis of diabetes in their medical history or were taking oral hypoglycemic medications and/or insulin at or before the time of biopsy. In addition, we performed a meta-analysis of 8 previously published articles with a total of 1,401 additional biopsy-proven cases of GCA in patients whose status was recorded as diabetic or nondiabetic. RESULTS: Of 44 cases with biopsy-positive GCA in our patient cohort, only 4 (9.1%) were diabetic at or before the time of biopsy. Of 171 patients with negative TAB, 61 (35.7%) had DM (P = 0.0006). The prevalence of DM among recorded cases of biopsy-positive GCA ranged from 0% to 13.8% in the 8 studies included in our meta-analysis, with a combined frequency of 89 diabetic patients in a total of 1,401 cases (6.35%). CONCLUSION: The low frequency of a positive TAB in diabetic GCA suspects should be considered when formulating an index of suspicion in the evaluation of patients with possible GCA. More research is needed to delineate the nature of the interaction between DM and GCA.


Assuntos
Biópsia , Complicações do Diabetes/epidemiologia , Diabetes Mellitus/epidemiologia , Arterite de Células Gigantes , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Feminino , Arterite de Células Gigantes/diagnóstico , Arterite de Células Gigantes/epidemiologia , Arterite de Células Gigantes/etiologia , Humanos , Masculino , Metanálise como Assunto , Pessoa de Meia-Idade , Razão de Chances , Estudos Retrospectivos , Artérias Temporais/patologia
13.
J Binocul Vis Ocul Motil ; 72(4): 226-229, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36279479

RESUMO

The evaluation and management of vertical strabismus is more challenging and nuanced than that of horizontal strabismus. Vertical strabismus often results from a variety of restrictive or paretic causes, which can be further characterized as either acquired or congenital. In some cases, identifying the correct etiology of the strabismus can mean uncovering a potentially life-threatening condition, such as a brain tumor or stroke. The keys to identifying the correct diagnosis are, first and foremost, a careful history, and secondly, a detailed examination. The characteristics, etiologies, and evaluation of vertical strabismus will be reviewed here.


Assuntos
Diplopia , Estrabismo , Humanos , Diplopia/diagnóstico , Diplopia/terapia , Estrabismo/diagnóstico , Estrabismo/terapia , Estrabismo/etiologia
14.
J Grad Med Educ ; 14(6): 674-679, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36591419

RESUMO

Background: The effect of virtual interviews on residency match outcomes during the COVID-19 pandemic is unknown. Examining the ophthalmology match may help inform all specialties undergoing virtual interviews. Objective: To determine the impact of allopathic applicant match characteristics in the first year of the virtual residency Match process. Methods: Using the Association of University Professors of Ophthalmology match database, a retrospective review was conducted of all allopathic applicants to ophthalmology residency programs in the United States from the 2016 through the 2021 match cycles. Demographic information, interview numbers, and match outcomes were compared between the 2016-2020 (in-person) and 2021 (virtual) cycles. Results: A total of 3343 allopathic applicants were analyzed. Applicants in the 2021 Match applied to significantly more programs than 2016-2020 applicants did (78.7±23.6 vs 73.1±22.7, P<.001). Among matched and unmatched applicants, there was no significant difference in the number of interviews granted or completed. There was a significant reduction in the match rate between the 2016-2020 and 2021 Match cycles (81.3% vs 76.6%, P=.0009). A subanalysis of applicants who went to medical schools with ophthalmology residency programs (N=2308) found that the home institution match rate was significantly higher for the 2021 Match compared to the aggregate 2016-2020 Matches (26.1% vs 20.6%, respectively, P=.015). Conclusions: Significantly more applicants to ophthalmology residency programs matched at their home institutions in the 2021 virtual match cycle compared to the previous 5 years without influencing the interview numbers granted and attended.


Assuntos
COVID-19 , Internato e Residência , Oftalmologia , Humanos , Estados Unidos , Oftalmologia/educação , Pandemias , Critérios de Admissão Escolar
15.
J AAPOS ; 25(6): 360-362, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34597780

RESUMO

Hamartomas are benign neoplastic malformations characterized by disorganized growths of tissue in their native location. They may grow in numerous sites throughout the body. We report the case of a 3-year-old boy with unilateral compressive optic neuropathy caused by a brain hamartoma that mimicked strabismic amblyopia. To our knowledge, this is the first case report in the literature of prechiasmal optic nerve compression from a brain hamartoma without ipsilateral bony defect or encephalocele.


Assuntos
Ambliopia , Hamartoma , Doenças do Nervo Óptico , Ambliopia/complicações , Ambliopia/etiologia , Encéfalo , Criança , Pré-Escolar , Hamartoma/complicações , Hamartoma/diagnóstico , Humanos , Masculino , Nervo Óptico , Doenças do Nervo Óptico/diagnóstico , Doenças do Nervo Óptico/etiologia
16.
Surv Ophthalmol ; 66(2): 402-406, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-31150657

RESUMO

A healthy 7-year-old girl underwent a routine eye examination and was referred for unilateral, left optic nerve swelling. Best-corrected visual acuity in the affected eye was 20/20 with full Ishihara color plates and no relative afferent pupillary defect. Initial extensive workup was normal for any cause of unilateral disk swelling. When the patient returned a few years later with decreased vision, a thickened, gray-white preretinal tissue with surrounding retinal contraction and a surrounding charcoal gray lesion had developed in her optic nerve. Spectral-domain optical coherence tomography over the optic nerve demonstrated distortion of the inner retinal architecture, a dense epiretinal membrane, and high internal reflectivity. Clinical examination and imaging revealed a diagnosis of combined hamartoma of the retina and retinal pigment epithelium.


Assuntos
Membrana Epirretiniana , Hamartoma , Doenças Retinianas , Criança , Membrana Epirretiniana/diagnóstico , Membrana Epirretiniana/patologia , Feminino , Angiofluoresceinografia , Hamartoma/diagnóstico , Hamartoma/patologia , Humanos , Doenças Retinianas/diagnóstico , Epitélio Pigmentado da Retina/patologia , Tomografia de Coerência Óptica/métodos
17.
J Acad Ophthalmol (2017) ; 13(2): e151-e157, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37388830

RESUMO

Purpose Only from reviewing applications, it is difficult to identify which applicants will be successful ophthalmology residents. The change of the USMLE Step 1 scoring to "Pass/Fail" removes another quantitative metric. We aimed to identify application attributes correlated with successful residency performance. This study also used artificial intelligence (AI) to evaluate letters of recommendation (LOR), the Dean's letter (MSPE), and personal statement (PS). Design Retrospective analysis of application characteristics versus residency performance was conducted. Participants Residents who graduated from the Dean McGee Eye Institute/University of Oklahoma Ophthalmology residency from 2004 to 2019 were included in this study. Methods Thirty-four attributes were recorded from each application. Residents were subjectively ranked into tertiles and top and bottom deciles based on residency performance by faculty present during their training. The Ophthalmic Knowledge Assessment Program (OKAP) examination scores were used as an objective performance metric. Analysis was performed to identify associations between application attributes and tertile/decile ranking. Additional analysis used AI and natural language processing to evaluate applicant LORs, MSPE, and PS. Main Outcome Measures Characteristics from residency applications that correlate with resident performance were the primary outcome of this study. Results Fifty-five residents and 21 faculty members were included. A grade of "A" or "Honors" in the obstetrics/gynecology (OB/GYN) clerkship and the presence of a home ophthalmology department were associated with ranking in the top tertile but not the top decile. Mean core clerkship grades, medical school ranking in the top 25 U.S. News and World Report (USNWR) primary care rankings, and postgraduate year (PGY)-2 and PGY-3 OKAP scores were predictive of being ranked in both the top tertile and the top decile. USMLE scores, alpha-omega-alpha (AOA) status, and number of publications did not correlate with subjective resident performance. AI analysis of LORs, MSPE, and PS did not identify any text features that correlated with resident performance. Conclusions Many metrics traditionally felt to be predictive of residency success (USMLE scores, AOA status, and research) did not predict resident success in our study. We did confirm the importance of core clerkship grades and medical school ranking. Objective measures of success such as PGY-2 and PGY-3 OKAP scores were associated with high subjective ranking.

18.
Surv Ophthalmol ; 66(5): 892-896, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33010288

RESUMO

A 13-year-old boy reported acute horizontal binocular diplopia and headache. Ten days before these symptoms he suffered from a gastrointestinal infection. Ophthalmological examination revealed bilateral ophthalmoparesis and diffuse hyporeflexia. Magnetic resonance imaging of the brain was normal. Lumbar puncture revealed albumin-cytological dissociation. There were no anti-GQ1b antibodies, but serum anti-GM1 antibodies were detected. He received intravenous immunoglobulins and had fully recovered two weeks later. Miller Fisher syndrome and its atypical variants are uncommon in childhood; nevertheless, they should be considered in the differential diagnosis of bilateral acute ophthalmoparesis.


Assuntos
Síndrome de Miller Fisher , Oftalmoplegia , Adolescente , Autoanticorpos , Diplopia/diagnóstico , Diplopia/etiologia , Cefaleia , Humanos , Imageamento por Ressonância Magnética , Masculino , Síndrome de Miller Fisher/diagnóstico , Oftalmoplegia/diagnóstico
19.
J AAPOS ; 24(4): 249-251, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32621983

RESUMO

A 13-year-old girl presented with a 5-day history of fever and cough followed by new-onset oral ulcers and conjunctival injection. Clinical examination revealed bilateral 360-degree subconjunctival hemorrhages, which later evolved to corneal epithelial defects, pseudo-membrane formation, and extensive oral mucosal ulceration. Mycoplasma pneumoniae serum IgG and IgM were positive. Treatment with topical prednisolone acetate, moxifloxacin, preservative-free artificial tears, and erythromycin ointment was initiated. A self-retaining amniotic membrane was placed. The ocular and oral lesions resolved within 2 weeks of treatment, and the patient's vision returned to baseline. Mycoplasma-induced rash and mucositis is a newly defined entity that mainly affects children and has a favorable prognosis with early detection and treatment.


Assuntos
Conjuntivite , Exantema , Mucosite , Pneumonia por Mycoplasma , Adolescente , Criança , Conjuntivite/diagnóstico , Feminino , Humanos , Mucosite/induzido quimicamente , Mucosite/diagnóstico , Mycoplasma pneumoniae , Pneumonia por Mycoplasma/diagnóstico , Pneumonia por Mycoplasma/tratamento farmacológico
20.
JAMA Ophthalmol ; 138(6): 698-701, 2020 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-32324197

RESUMO

Importance: Intravitreous bevacizumab (0.25 mg to 0.625 mg) is commonly used to treat type 1 retinopathy of prematurity (ROP), but there are concerns about systemic toxicity, particularly the risk of neurodevelopmental delay. A much lower dose may be effective for ROP while reducing systemic risk. Previously, after testing doses of 0.25 mg to 0.031 mg, doses as low as 0.031 mg were found to be effective in small cohorts of infants. Objective: To find the lowest dose of intravitreous bevacizumab effective for severe ROP. Design, Setting, and Participants: Between April 2017 and May 2019, 59 premature infants with type 1 ROP in 1 or both eyes were enrolled in a masked, multicenter, dose de-escalation study. In cohorts of 10 to 14 infants, 1 eye per infant received 0.016 mg, 0.008 mg, 0.004 mg, or 0.002 mg of intravitreous bevacizumab. Diluted bevacizumab was prepared by individual research pharmacies and delivered using 300-µL syringes with 5/16-inch, 30-guage fixed needles. Analysis began July 2019. Interventions: Bevacizumab intravitreous injections at 0.016 mg, 0.008 mg, 0.004 mg, or 0.002 mg. Main Outcomes and Measures: Success was defined as improvement by 4 days postinjection and no recurrence of type 1 ROP or severe neovascularization requiring additional treatment within 4 weeks. Results: Fifty-five of 59 enrolled infants had 4-week outcomes completed; the mean (SD) birth weight was 664 (258) g, and the mean (SD) gestational age was 24.8 (1.6) weeks. A successful 4-week outcome was achieved for 13 of 13 eyes (100%) receiving 0.016 mg, 9 of 9 eyes (100%) receiving 0.008 mg, 9 of 10 eyes (90%) receiving 0.004 mg, but only 17 of 23 eyes (74%) receiving 0.002 mg. Conclusions and Relevance: These data suggest that 0.004 mg may be the lowest dose of bevacizumab effective for ROP. Further investigation is warranted to confirm effectiveness of very low-dose intravitreous bevacizumab and its effect on plasma vascular endothelial growth factor levels and peripheral retinal vascularization.


Assuntos
Bevacizumab/administração & dosagem , Retinopatia da Prematuridade/tratamento farmacológico , Inibidores da Angiogênese/administração & dosagem , Relação Dose-Resposta a Droga , Feminino , Seguimentos , Humanos , Lactente , Recém-Nascido , Injeções Intravítreas , Masculino , Receptores de Fatores de Crescimento do Endotélio Vascular/antagonistas & inibidores , Retina/patologia , Retinopatia da Prematuridade/diagnóstico , Resultado do Tratamento
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