View clinical trials related to Retinopathy of Prematurity.
Filter by:Extremely premature infants are at risk of developing a potentially blinding eye disease, called retinopathy of prematurity (ROP). Currently available treatment, consisting of laser surgery or injection of drugs into the eye balls, may prevent most but not all cases of permanent ROP-mediated blindness. Both types of treatment are associated with significant costs and side effects. An orally administered drug commonly used to treat hypertension, propranolol, may be effective in halting progression of ROP to severe stages, as suggested by preliminary data from small studies. As severe (threshold) ROP is an overall rare disease, the effectiveness of propranolol in combating ROP can only be assessed in a large, multicenter randomized controlled trial involving hospitals caring for extremely preterm infants of diverse origin.
Anesthesia management of preterm infants is challenging for the anesthesiologist. Because of rudimentary build, many medical and physical problems have shown in treatment of disease such as complications, airway problems, temperature disregulation and deficient drug metabolism. This retrospective study evaluates the perioperative management and postoperative course in premature infants undergoing diode laser photocoagulation (DLP) for retinopathy of prematurity (ROP).
The purpose of this study is to evaluate the safety and efficacy of oral/local propranolol in preterm newborns who diagnosed as early phase of retinopathy of prematurity (ROP).
Retinopathy of prematurity (ROP) is a major cause of blindness and visual impairment in children in both developing and developed countries around the world. ROP is a multifactorial disease characterized by perturbation of normal vascular development in the retina. The pathogenesis of ROP is hypothesized to consist of two distinct phases of which the second phase is characterized by hypoxia-induced up-regulation of vascular endothelial growth factor (VEGF) and retinal neovascularization. Recent studies have shown a relationship between the β-adrenergic system and angiogenesis. This relationship has been observed in several diseases, like infantile hemangiomas, ROP, and neoplasias. Studies in animal models have shown that norepinephrine stimulates VEGF expression and secretion in retinal cells. In oxygen induced retinopathy, blockage of β-adrenergic receptors (β-AR) can inhibit the angiogenic cascade and interfere with further proliferation of retinal vasculature. Also, angiogenesis seems to be impaired in β-Argene deficient mice, when exposed to hypoxia and other stimuli, but this function is restored after gene therapy. Assuming in human preterm newborns with ROP that VEGF overexpression and retinal neovascularization in response to hypoxia might involve b-AR activation, we design prospective randomized study to assess the effect of oral propranolol on the progression of early stages of ROP in very low birth weight infants.
Retinopathy of prematurity (ROP) is a disorder of development of the neural retina and its vasculature that may impact vision in vulnerable preterm neonates for a lifetime. This study utilizes new technology to determine visual and neurological development of very preterm infants in the intensive care nursery, during a period of rapid growth of the retina, optic nerve and brain. The long-term goal of this study is to help improve preterm infant health care via objective bedside imaging and analysis that characterizes early critical indicators of poor vision, neurological development and ROP, which will rapidly translate to better early intervention and improved future vision care.
The development of the retinal vascular network is generally complete during the 3rd trimester of pregnancy but may continue during the first 15 days of life. This late maturation may cause problems in pre-term births and may result in immature vascularization of the retina, a condition called retinopathy of prematurity. Among the different factors affecting the development of the retinal vasculature, the tissue level of omega-3 polyunsaturated fatty acids (PUFA) appears to be a crucial element, as does the form of the PUFA present in the tissues (nature of the phospholipids in their membranes). This project aims to show a possible association between levels of omega-3 PUFA and the onset of retinopathy of prematurity (ROP).
The study includes preterm infants who are being screened for ROP between April 1,2016 and April 30, 2017 in 69 neonatal intensive care units (NICUs) in Turkey. Infants with birth weight (BW) of ≤1500 g or ≤32 weeks' gestation and those with a BW of greater than 1500 g or gestational age (GA) >32 weeks with an unstable clinical course are included. The incidence of any ROP, severe ROP and treatment modalities will be determined. The risk factors for ROP development will also be evaluated.
Retinopathy of prematurity (ROP) is a feared complication of premature birth. If discovered in time, the disease can be treated, and impaired vision or blindness can be reduced. Premature infants are therefore examined regularly after birth. However, the examination is painful and stressful for the infant. Painful experiences might lead to a pathological stress response later in life and should therefore be prevented. In this study skin-to-skin contact with a parent is tested for relief of pain and stress in preterm infants being examined for retinopathy of prematurity.
Most fatty acids, important for development and especially the Omega-3 fatty acids for the brain development are transferred in the third trimester with means that in the premature infant this transport via the placenta is interrupted and the infant is dependent on the concentrations in breast milk which vary depending on the mother's diet and her stores. It has even been suggested that low Omega-3 would be a cause of premature delivery. Many countries have much higher levels of Omega-3 fatty acids in breast milk than found in Sweden and breast milk substitutions are generally now supplemented with the Long Chained Poly Unsaturated Fatty Acids (LCPUFA). Therefore the supplementation to be given can not be seen to give any risks for the infant. On the contrary, several studies have shown that mother who eat equal to or less than twice fish a week during pregnancy give birth to infants with impaired development. Low Omega-3 levels in premature infants between gestational ages of 23 and 40 weeks can be one reason for Retinopathy of Prematurity (ROP) development. Restoration of Omega-3, Dokosahexaenacid (DHA) and Eikosapentaenacid (EPA) to normal in utero levels may prevent ROP by allowing normal vessel growth and survival. An increase of Omega-3 levels bringing levels to within physiological range may prevent development of ROP.
The purpose of this study is to evaluate whether docosahexaenoic acid given by enteral feeding prevent retinopathy of prematurity and/or diminish its severity in preterm infants.