As the number of elderly is increasing, the number of people with Alzheimer's disease (AD) residing in long-term care facilities is increasing. A growing body of evidence demonstrates that speech-language pathologists can have a positive impact on the well-being and the nutritional status of clients with AD by using the environment, caregiver training, and an individual's preserved abilities to help compensate for one's deficits.
On Sept. 25, 2001, the Centers for Medicare and Medicaid Services (CMS) issued a Program Memorandum (Transmittal AB-01-135) to all Intermediaries/Carriers. In this memorandum CMS stated that persons with AD may become eligible for speech-language pathology services if these services were reasonable and necessary.
It's important to remember the phrase "may become eligible" for speech-language pathology services and the words "reasonable and necessary" in the preceding sentence. What CMS really said in this transmittal was that not every patient with AD would be an appropriate candidate for services and that only under certain conditions would Medicare pay for these services. CMS used the words "reasonable and necessary" as criteria for appropriate candidates but offered no specific guidelines to help SLPs determine which patients are and which are not appropriate candidates.
General Medicare guidelines state that all candidates for speech-language pathology services must demonstrate potential for positive change, so this guideline needs to be considered when selecting persons with AD for evaluation and potential treatment. The fact that persons with AD have a progressive neurological disorder with deficiencies in certain memory skills makes the documentation process challenging. How does one document potential for positive change and the ability to learn new skills when there are deficits in memory skills? More specifically, how does one document that a person with AD can learn to communicate new words, to communicate basic and medical needs, to swallow safely, and/or to respond to environmental changes?
Establishing functional goals is another documentation necessity. Medicare reviewers want to see that the accomplishment of the established goals will result in changes that make a significant difference in the life of the person with AD. Helping persons with AD improve their ability to communicate basic and medical needs and to swallow more safely (to reduce risk for aspiration, malnutrition, and dehydration) would all be acceptable goals assuming that the limitations in functional skills were directly related to the progressive nature of the AD.
Keeping in mind that the process of documenting services for persons with AD is no different than the process of documenting services for persons without AD can help the SLP justify and ethically treat persons with AD and make a significant contribution in improving the quality of life for this population.
Understanding the different memory systems can help the SLP establish potential for positive change. The two major categories of memory are declarative (explicit) and non-declarative (implicit). The types of memory are distinguished by the kind of information processing involved in each.
Declarative memory requires conscious recall of information that is explicitly stored and retrieved. Declarative memory includes episodic memory, which concerns information about a situation, and semantic memory, which concerns abstract knowledge about the world.
In contrast, non-declarative (also called procedural) memory is based on implicit learning of certain patterns. Non-declarative memory is a memory of skills and procedures acquired through a series of trials. Declarative memory depends heavily on the hippocampus (an area of the brain that is damaged in people with AD), whereas procedural memory is managed by other brain mechanisms.
Procedural memory is generally preserved late into the course of AD. By documenting intact procedural memory and using effective techniques such as spaced retrieval to improve function, the SLP can make a strong case for evaluating and treating patients with AD. The traditional practice of including caregivers in the treatment program can also be justified by documenting preserved procedural memory and how caregiver cuing, specifically related to this preserved skill, can improve language and swallow function.
Mealtime Behavior Changes
As AD progresses, changes occur in a person's nutritional status. During the early to middle stages the risk of malnutrition may be related to forgetting steps involved in preparing a meal or shopping for food items. The individual may be unable to safely operate a stove, unable to recognize food when spoiled, and may be unable to hold attention throughout a meal.
It is common during this stage for the person to become distracted by environmental factors, experience a change in food preference, pour liquid into food, or take others' food. Individuals often express concerns about money to pay for food or meals.
During the middle to advanced stage, the individual may become more confused and unaware of the surroundings, place, and time. The person may forget which utensil to use, and may not recognize hunger, thirst, or food temperature. Individuals may be at risk for dehydration as they may not ask for drinks. The person may pace or refuse to sit down for a meal, causing weight loss.
Research has shown that physical and social environments are important but often untapped resources that can have a significant impact on quality of life. However, assessing such factors as environmental stimuli, lighting, and noise levels are not always part of routine clinical practice for an SLP.
There are many situations in which clients with memory loss do not perform to their maximum potential, and/or exhibit what the staff consider to be "behaviorial problems." For example, a client who is perceived as disruptive may simply be responding to something in his or her environment that is not supportive.
In addition to documenting potential for positive change and the ability to learn new skills, SLPs need to document when skilled services will be needed to effect positive change. What this means is that the knowledge and training of a professional is needed to develop and implement an intervention program. If a Medicare reviewer determines that the services provided could have been provided by nursing staff or family members, services are likely to be denied.
Caregivers can maintain a program developed by an SLP, but documentation must show that a professional was needed to assess strengths and weaknesses related to language and swallow abilities so an appropriate program can be developed. Clinicians need to document specific intervention techniques that can only be administered by an SLP. Statements like, "trained in spaced-retrieval technique to improve ability to communicate medical needs," or "trained caregivers to use gravity on the unaffected side to facilitate a safe swallow," or "assessed for appropriate amount and texture of food for safe swallow" would demonstrate that the knowledge and training of a professional were required.
Many clients with AD require a thorough dysphagia evaluation. Preserved abilities should be identified and a treatment plan that builds on preserved abilities and past and current meal preferences should be developed, with an eye to the possible facilitators and barriers in the environment. Interventions should include simple techniques to reduce the demands on impaired memory systems and provide cues that will enable the client to function using preserved abilities.