View clinical trials related to Retinopathy of Prematurity.
Filter by:Retinopathy of prematurity (ROP) is a retinal disorder of preterm neonates and a potential cause of blindness. As early diagnosis and treatment preserve vision, very low birth weight infants must be screened for ROP. Mydriatic eye drop administration is essential to perform funduscopic evaluations. The most commonly used mydriatic drops for pupil dilatation are 0.5-1.0% tropicamide and/or 0.5-1.0% phenylephrine or 0.2-1.0% cyclopentolate. Phenylephrine, an alpha-1 sympathomimetic agonist, is readily absorbed from conjunctival mucosa and has a potent systemic vasopressor effect. Tropicamide causes cycloplegia by inhibition of ciliary muscle contraction and has a short acting para-sympatholytic effect. Systemic absorption of mydriatic eye drops has been associated with cardiovascular, respiratory and gastrointestinal adverse effects. Systemic side effects include apnea, desaturation, increased heart rate and blood pressure, delayed gastric emptying, and feeding intolerance. The data about the effects of mydriatics on cerebral blood flow and tissue oxygenation are sparse. Cerebral blood flow autoregulation depends in part on the adrenergic and cholinergic control of cerebral vasculature, but whether mydriatics have an effect on cerebral haemodynamics is unknown. Near-infrared spectroscopy and Doppler ultrasonography (US) are non-invasive methods commonly used for neuromonitorization in NICUs. The regional blood flow changes measured using Doppler US have been reported to be associated with cerebral oxygenation and indicate a high correlation with NIRS in newborns. The aim of this study was to evaluate the effects of mydriatic eye drops on cerebral oxygenation and blood flow in preterm infants by NIRS and Doppler US.
This study aimed to evaluate the effects of multisensory stimulation on pain and physiological parameters resulting from ROP examination in preterm newborns. It was planned as a randomized controlled trial. trying to reach 80 newborns in total. Multisensory stimulation will be applied to the intervention group during the examination. In the control group, routine care will be applied during the examination.
The goal of this retrospective observational study is to [learn about the correlation between hyperbilirubinemia and retinopathy of prematurity in preterm infants. The main question it aims to answer are: • To evaluate the possible effect of neonatal jaundice linked to the presumed protective antioxidant action of bilirubin on the development of ROP, compared to a control group which, although presenting ROP, did not develop jaundice.
The analysis of saliva of preterm newborns could be a powerful tool to investigate human fetal development in an ethically acceptable fashion, indeed the collection of salivary samples is a fast and non-invasive procedure. The purpose of the study is to characterize peptide and proteins present in human preterm saliva and to investigate the relative amount of several proteoforms of the proteins and peptides detectable in preterm saliva in order to have information on the activity of various enzymes acting during late fetal development. Preterm infants with gestational age between 175-216 days (25-30 weeks), admitted to the Neonatal Intensive Care Unit (NICU) will be enrolled for this study. A saliva sample will be collected every seven days from the birthday and up to 40 weeks (286 days) of postmenstrual age (PMA) or up to discharge if it occurs earlier. A targeted ESI mass spectrometry investigation, based on a top-down analysis of the intact salivary proteome will be performed.
The aim of our study was to determine whether a low dose of 0.3125mg intravitreal bevacizumab is effective in treatment of type 1 ROP as the standard 0.625 mg dose., regarding : Serum Systemic VEGF levels. Retinal Vascularization.
This is an observational study to collect data from Japanese babies with retinopathy of prematurity (ROP) who will be treated with Eylea. In observational studies, only observations are made without specified advice or interventions. ROP is a condition that affects the eye and occurs only in babies who are born too early. Most cases of ROP are mild and get better without treatment, but more serious cases need to be treated in time. ROP happens when the blood vessels in the "retina" grow abnormally. The retina is the layer of tissue at the back of the eye that picks up light and sends messages to the brain. In babies with ROP, these abnormal blood vessels can leak. This causes damage to the retina and can sometimes move it out of place causing medical problems such as blindness. Eylea is received as an injection into the eye. It works by blocking a certain protein (VEGF) that can cause blood vessels in the retina to grow abnormally. Eylea is already available in Japan and is approved for doctors to prescribe to babies with ROP. The participants in this study are Japanese babies with ROP that their doctors decided to treat with Eylea before the start of this study. Babies with ROP that were already prescribed Eylea by their doctors may also be included. The main purpose of this study is to collect more data on how safe the treatment with Eylea is in babies with ROP under a real-world setting. Another purpose of this study is to collect more data on how well Eylea works in these participants. To see how safe Eylea is, the study doctors will collect all medical problems that the participants treated with Eylea have. These medical problems are called adverse events. Doctors keep track of all the adverse events that happen, even if they do not think that they might be related to the treatment. To see how well Eylea works, the study doctors will check the number of participants: - with no active ROP after starting treatment - where ROP came back up to 6 months after start of treatment In this study, the study doctor will: - collect past data of the participants from medical records - interview the participants - collect treatment-related data during routine visits. The study duration is 6 months with 3 planned visits. One visit will be at start of treatment, one at one month and one at 6 months after start of treatment. All data required for this study will be collected during routine visits. Besides this data collection, no further tests or examinations are planned in this study.
Despite advances in the neonatal intensive care units, retinopathy of prematurity (ROP) has become a common reason for blindness and visual disabilities in premature infants so that it accounts for about 5% and 30% of such complications in developed and developing countries. The pathophysiology of ROP is multifactorial. Supplemental oxygen demand and lower gestational age (GA) and birth weight (BW) are among the major risk factors for the occurrence and progression of ROP. Anti-vascular endothelial growth factor (anti-VEGF) agents are a promising modality of treatment for ROP, as laser therapy is associated with disadvantages such as complications from undertreatment or overtreatment, anterior segment burns, hemorrhage, or ischemia, and potentially higher rates of myopia. Ranibizumab is the first approved anti-VEGF treatment for the management of retinopathy, and is a promising alternative to laser therapy. Ranibizumab is a humanized monoclonal recombinant antibody fragment with a shorter half-life and less systemic toxicity than bevacizumab. Its binding affinity is nearly tenfold that of bevacizumab. The plasma half-life of bevacizumab is 17-21 days, while that of ranibizumab is 3 days. Greater systemic absorption of bevacizumab is thought to lead to greater systemic suppression of VEGF. These data may explain the better safety profile of ranibizumab. Type I ROP is defined as any stage of ROP with plus disease in zone I, stage 3 ROP in zone I and stage 2 or 3 ROP with plus disease in zone II . The hallmark of Aggressive-ROP (previously known as Aggressive posterior-ROP) is rapid development of pathological neovascularization and severe plus disease without progression being observed through the typical stages of ROP. It may occur in larger preterm infants and beyond the posterior retina. The aim of this prospective study is to compare the efficacy of intravitreal ranibizumab for type 1 ROP and A-ROP as regard acute ROP regression, recurrence profile, peripheral retinal vascularization and the need for further ablative therapy.
Study of cerebral hemodynamic changes in preterm infant and the effect of topical anesthetic eye drops ( benoxinate hydrochloride 0.4% ) on PIPP score and cerebral hemodynamic changes during fundus examination in neonates with gestational age ≤ 34 weeks or birth weight ≤ 2.000 Kg regardless their gestational age , after postnatal day 28.
The main goal of this trial is to test if: automated adjustment of supplemental oxygen to preterm infants in noninvasive respiratory support based on feedback from a measurement of blood-oxygen saturation results in more stable blood-oxygenation compared to routine nurse controlled adjustment of oxygen
This is a 24-week, multicenter, open-label, single-arm, observational, post approval commitment study, which is designed to collect effectiveness, safety and other clinical information of intravitreal ranibizumab 0.2 mg for the treatment of Retinopathy of Prematurity (ROP) participants in a real world clinical setting in mainland China.