tailieunhanh - Báo cáo y học: "The effect of light on critical illness"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: The effect of light on critical illness. | Castro et al. Critical Care 2011 15 218 http content 15 2 218 CRITICAL CARE REVIEW L_ The effect of light on critical illness Ricardo Castro1 Derek C Angus2 Matt R Rosengart3 This article is one of eleven reviews selected from the Annual Update in Intensive Care and Emergency Medicine 2011 Springer Verlag and co-published as a series in Critical Care. Other articles in the series can be found online at http series annual. Further information about the Annual Update in Intensive Care and Emergency Medicine is available from http series 8901 We shape our buildings and afterwards our buildings shape us. Winston Churchill Introduction The research of this decade has yielded substantial improvements in the delivery of and technology with which to provide care for critically ill intensive care unit ICU patients. Garnering less attention from the medical and scientific community is the environment in which that care is provided which remains impersonal noisy and over illuminated. Noticeably the nursing and business literature is replete with studies on the matter 1 2 . This discussion will focus on the available evidence regarding associations between the ICU environment specifically light and patient outcome. Definitions of light and the biology including neural hormonal and immunologic mechanisms by which it affects the body will be initially emphasized. An integrative commentary will be presented at the conclusion. Because of constraints the focus is upon the critically ill patient recognizing that much of what will be discussed is equally applicable to the healthcare provider. Light Sunlight reaching the earth s surface is categorized by effective wavelength ultraviolet B UV-B 280-315 nm ultraviolet A UV-A 315-400 nm visible light 400760 nm and infrared light 760 nm X nm 3 . Of these four categories visible light is essential for vision and resetting of the circadian clock through photoreceptors in the retina 4 . .