Английская Википедия:Canadian CT head rule
Шаблон:Short description The Canadian CT head rule (abbreviated CCTHR or CCHR; also sometimes referred to as the Canadian Computed Tomography Head Rule)[1][2] is a medical scale used to decide whether patients with minor head injuries should undergo cranial CT scans. It was originally described by Stiell et al. in a paper published in the Lancet in 2001, in which they initially used it only on patients with Glasgow Coma Scale scores of between 13 and 15.[3] Since then, the CCTHR has become the most widely researched and extensively validated rule of its kind, though a 2011 systematic review noted that "its exclusion criteria make it difficult to apply universally."[1]
Criteria
The CCTHR excludes patients who:
- did not experience a traumatic brain injury
- have a Glasgow Coma Scale score of lower than 13,
- are under the age of 16,
- has a bleeding disorder or is using warfarin, and/or
- has a visible open skull fracture.[4]
Under the CCTHR, patients with minor head injuries should only receive CT scans if one or more of the following criteria are met:[4]
- Glasgow Coma Scale score lower than 15 at 2 hours after injury
- Suspected open or depressed skull fracture
- Any sign of basal skull fracture
- Two or more episodes of vomiting
- Age 65 or older
- Amnesia before impact of 30 or more minutes
- Dangerous mechanism (this is defined by Stiell et al. (2005) as "a pedestrian struck by a motor vehicle, an occupant ejected from a motor vehicle, or a fall from an elevation of 3 or more feet or 5 stairs."[4])
The first five criteria are considered "high-risk", whereas criteria 6 and 7 are considered "medium-risk".[4]
References
External links
Шаблон:Med-diagnostic-stub
Шаблон:Med-imaging-stub
