Lin Katherine, Wroten Michael
University of Miami
Medstar Georgetown University
The Rancho Los Amigos Scale (RLAS), also known as the Ranchos Scale, is a widely accepted medical scale used to describe cognitive and behavioral patterns in patients with brain injury as they recover. It was originally developed by the head injury team at the Rancho Los Amigos Hospital in Downey, California to assess patients emerging from a coma. It is often used in conjunction with the Glasgow Coma Scale during the initial assessment of a brain injury patient. However, unlike the Glasgow Coma Scale, it is used throughout the recovery period and not limited to the initial assessment. It takes into account a patient’s level of consciousness as well as their reliance on assistance with cognitive and physical functions. The original scale consisted of 8 levels, with level 1 representing the lowest level of function and level 8 the highest. As a patient progresses to higher levels, they demonstrate improved cognitive and behavioral states and move toward greater independence. Individuals move through the different levels in a sequential pattern. However, the time spent in each level and the maximum level achieved vary among individuals. Individuals can also demonstrate overlap in behaviors across different levels and skip levels during their recovery. The original scale has since been revised and is known as the Rancho Los Amigos Revised Scale (RLAS-R). One limitation of the original 8-level scale was that it did not accurately reflect individuals at higher levels of recovery. Two more levels were added to the initial 8-level Ranchos Scale, creating a more comprehensive 10-level scale, the RLAS-R. Each level is further described in detail below. No response to external stimuli . Responds inconsistently and non-purposefully to external stimuli. Responses are often the same regardless of the stimulus. Responds inconsistently and specifically to external stimuli. Responses are directly related to the stimulus, for example, the patient withdraws or vocalizes to painful stimuli. Responds more to familiar people (friends and family) than to strangers. The individual is in a hyperactive state with bizarre and non-purposeful behavior. Demonstrates agitated behavior that originates more from internal confusion than the external environment. Absent short-term memory. Shows an increase in consistency with following and responding to simple commands. Responses are non-purposeful and random to more complex commands. Behavior and verbalization are often inappropriate, and the individual appears confused and often confabulates. If action or tasks are demonstrated, an individual can perform, but does not initiate tasks on their own. Memory is severely impaired, and learning new information is difficult. Different from level IV in that the individual does not demonstrate agitation to internal stimuli. However, they can show agitation to unpleasant external stimuli. Able to follow simple commands consistently. Able to retain learning for familiar tasks they performed pre-injury (brushing teeth, washing face); however, unable to retain learning for new tasks. Demonstrates increased awareness of self, situation, and environment, but is unaware of specific impairments and safety concerns . Responses may be incorrect secondary to memory impairments, but appropriate to the situation. Oriented in familiar settings. Able to perform daily routine automatically with minimal to absent confusion. Demonstrates carry over for new tasks and learning in addition to familiar tasks. Superficially aware of one’s diagnosis but unaware of specific impairments. Continues to demonstrate a lack of insight, decreased judgment, and safety awareness. Beginning to show interest in social and recreational activities in structured settings. Requires at least minimal supervision for learning and safety purposes. Consistently oriented to person, place, and time. Independently carries out familiar tasks in a non-distracting environment. Beginning to show awareness of specific impairments and how they interfere with tasks, however, requires standing by assistance to compensate. Able to use assistive memory devices to recall daily schedule. Acknowledges others’ emotional states and requires only minimal assistance to respond appropriately . Demonstrates improvement in memory and the ability to consolidate past and future events. Often depressed, irritable, and with a low frustration threshold. Able to shift between different tasks and complete them independently. Aware of and acknowledges impairments when they interfere with tasks and can use compensatory strategies to cope. Unable to independently anticipate obstacles that may arise secondary to impairment. With assistance, one can think about the consequences of actions and decisions. Acknowledges the emotional needs of others with stand-by assistance. Continues to demonstrate depression and a low frustration threshold. Able to multitask in many different environments with extra time or devices to assist. Able to create own methods and tools for memory retention. Independently anticipates obstacles that may occur as a result of impairments and takes corrective actions. Able to independently make decisions and act appropriately, but may require more time or compensatory strategies. Demonstrate intermittent periods of depression and low frustration threshold when under stress. Able to appropriately interact with others in social situations.
兰乔斯友量表(RLAS),也被称为兰乔斯量表,是一种被广泛认可的医学量表,用于描述脑损伤患者从损伤中恢复时出现的认知和行为模式。它最初由加利福尼亚州唐尼市兰乔斯友医院的头部损伤治疗团队开发,用于评估从昏迷中苏醒的患者。在对脑损伤患者进行初始评估时,它常与格拉斯哥昏迷量表一起使用。然而,与格拉斯哥昏迷量表不同的是,它在整个恢复期间都可使用,而不限于初始评估。它考虑了患者的意识状态以及他们在执行认知和身体功能时对协助的依赖程度。原始量表由八个级别组成,1级代表最低功能水平,8级代表最高功能水平。随着患者进入更高水平,他们表现出认知和行为状态的改善,并朝着更大的独立性发展。个体按顺序通过不同级别。然而,每个级别所花费的时间以及达到的最高级别在个体之间是可变的。个体在两个不同级别之间也可能表现出行为重叠,并且在恢复过程中可能跳过某些级别。原始量表后来经过修订,被称为兰乔斯友修订量表(RLAS - R)。原始八级量表的一个局限性在于它不能准确反映恢复水平较高的个体情况。在最初的八级兰乔斯量表基础上增加了两个级别,以创建一个更全面的十级量表,即兰乔斯友修订量表(RLAS - R)。以下将对每个级别进行更详细的描述。
对外部刺激无反应。
对外部刺激的反应不一致且无目的。无论刺激如何,反应通常相同。
对外部刺激的反应不一致但有针对性。反应与刺激直接相关,例如,患者对疼痛刺激会退缩或发声。对熟悉的人(朋友和家人)的反应多于陌生人。
个体处于多动状态,行为怪异且无目的。表现出的激动行为更多源于内部困惑而非外部环境。短期记忆缺失。
在听从和回应简单指令方面表现出更高的一致性。对更复杂的指令反应无目的且随机。行为和言语表达通常不恰当,个体显得困惑且常虚构。如果展示了行动或任务,个体能够执行,但不会主动发起任务。记忆严重受损,学习新信息困难。与四级不同之处在于,个体对内部刺激不会表现出激动。然而,他们可能会对不愉快的外部刺激表现出激动。
能够始终如一地听从简单指令。能够记住受伤前执行的熟悉任务(刷牙、洗脸),但无法记住新任务。对自我、情况和环境的意识增强,但未意识到具体损伤和安全问题。由于记忆障碍,反应可能不正确,但与情况相符。
在熟悉的环境中有方向感。能够自动执行日常事务,几乎没有困惑。除了熟悉的任务外,还能进行新任务的学习和运用。表面上知道自己的诊断,但不知道具体损伤。仍然表现出缺乏洞察力、判断力下降和安全意识不足。开始对结构化环境中的社交和娱乐活动表现出兴趣。出于学习和安全目的,至少需要最低限度的监督。
始终能定向于人、地点和时间。在无干扰的环境中独立执行熟悉的任务。开始意识到具体损伤以及它们如何干扰任务,然而,需要有人在旁协助以进行补偿。能够使用辅助记忆设备来回忆日程安排。能认识到他人的情绪状态,仅需最低限度的协助就能做出适当反应。表现出记忆改善以及整合过去和未来事件的能力。经常情绪低落、易怒且挫折承受能力低。
能够在不同任务之间切换并独立完成。当损伤干扰任务时,能意识到并承认损伤,并能够使用补偿策略来应对。无法独立预见因损伤可能出现的障碍。在他人协助下能够思考行动和决策的后果。在他人协助下能认识到他人的情感需求。仍然表现出情绪低落和挫折承受能力低。
能够在许多不同环境中进行多任务处理,有额外的时间或设备协助。能够创建自己的记忆保留方法和工具。独立预见因损伤可能发生的障碍并采取纠正措施。能够独立做出决策并采取适当行动,但可能需要更多时间或补偿策略。在压力下会表现出间歇性的情绪低落和挫折承受能力低。能够在社交场合中与他人进行适当互动。