| 单词 | rds | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 释义 | RDSRDSRDSRDSRDSRDSRDSRDS(1) (Remote Desktop Services) Thin client computing solutions from Microsoft that evolved from Terminal Services. See Remote Desktop Services and Terminal Services.(2) (Remote Data Services) A set of programming interfaces from Microsoft that enables users to update data on the Internet or intranets from their ActiveX-enabled browser. Formerly ADC (Advanced Data Connector), it was integrated into ADO (Active Data Objects) and renamed RDS. See ADO. (3) (Radio Data System) A series of enhancements for VHF and FM radio that started in Europe in the 1980s and migrated around the world. RDS has been adapted to radios of all prices. It provides a variety of features including a more precise way of tuning and an eight-character display of the station. For car radios, it provides traffic information as well as a way to tune in alternate frequencies for the same station. For more information, visit the RDS Forum website at www.rds.org.uk. RDSrespiratory[res´pir-ah-tor″e]This is the major cause of death in neonates and survivors have a high risk for chronic neurologic complications. No one factor is known to cause the condition; however, prematurity and interrupted development of the surfactant" >surfactant system is thought to be the major causative factor. Surfactant is secreted by the epithelial cells of the alveoli. It acts as a detergent, decreasing the surface tension of fluids that line the alveoli and bronchioles and allowing for uniform expansion of the lung and maintenance of lung expansion. When there is an inadequate amount of surfactant, a great deal of effort is required to re-expand the alveoli with air; thus the newborn must struggle for each breath. Insufficient expansion of the alveoli results in partial or complete collapse of the lung (atelectasis). This in turn produces hypoxemia and elevated serum carbon dioxide levels. The hypoxemia causes metabolic acidosis from increased production of lactic acid and respiratory acidosis due to the hypercapnia. The lowered pH constricts pulmonary blood vessels and inhibits intake of oxygen, thus producing more hypoxemia and interfering with the transport of substances necessary for the production of the sorely needed surfactant. To improve respiratory function, intubation, suctioning of the air passages, and pressure" >continuous positive airway pressure via nasal prongs are commonly used, as well as instillation of artificial surfactant. Monitoring is conducted using monitoring" >transcutaneous oxygen monitoring or a pulse oximeter. To optimize breathing effort and facilitate air exchange, the newborn is positioned on the back with a shoulder support to keep the neck slightly extended, or on the side with the head supported. Because of the drying effect of oxygen therapy and the prohibition of oral fluids, mouth care must be given frequently to prevent drying and cracking of the lips and oral mucosa. Early symptoms include dyspnea, wheezing, and apprehension; cyanosis is rarely present. As the condition worsens the patient becomes drowsy and mentally confused and may slip into a coma. blood gas analysis is an important tool in diagnosing respiratory failure and assessing effectiveness of treatment. The condition is a medical emergency that can rapidly progress to irreversible cardiopulmonary failure and death. Treatment is concerned with improving ventilation and oxygenation of tissues, restoring and maintaining fluid balance and acid-base balance, and stabilizing cardiac function. RDSRDSPRPH2A gene on chromosome 6p21.2-cen that encodes peripherin 2, a member of the tetraspanin (cell surface) protein family, which mediate signal transduction events. These events play a role in regulating cell development, activation, growth and motility. Peripherin 2 is present in the outer segment of rod and cone photoreceptor cells, and it may act as an adhesion molecule involved in stabilisation and compaction of outersegment disks or in the maintenance of the curvature of the rim. It is essential for disk morphogenesis. Molecular pathology Defects of PRPH2 are associated with a variety of retinal disorders, including adult-onset vitelliform macular dystrophy, central areolar choroidal dystrophy type 2, patterned dystrophy of retinal pigment epithelium, retinitis pigmentosa type 7, retinitis punctata albescens, as well as cone-rod dystrophy and macular degeneration. RDSRespiratory distress syndrome, see there.Respiratory distress syndrome (RDS)RDS
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