Functional assessment
“Functional assessment of the patient’s level of independence for their life in society is what conceptually differentiates mild cognitive impairment from dementia,” explained Dr. Freire. “There are several types of activities of daily living. The instrumental activities (cooking, laundry, talking on the phone, using transportation, managing finances, taking medications, etc.) are the activities that truly distinguish between mild cognitive impairment and dementia. They allow the person to adjust to their environment and retain their independence within the community.”
There are multiple tools for assessing activities of daily living, but Dr. Freire singled out the Mongil test (from Spain), which covers basic, instrumental, and advanced activities. The higher the score, the worse the patient’s condition, so the goal is to lower the score. On the other hand, grouping certain items together helps determine whether there is a risk of falling, sarcopenia, depression, or suicide, among other outcomes. “So, it’s not only useful for diagnosis and treatment but also detects geriatric problems and syndromes. That is, it’s useful for prevention and allows planning of preventive and therapeutic medical interventions,” he explained.
Reversible dementia
Dr. Freire presented a diagnostic and therapeutic algorithm for cognitive impairment to be used when brief cognitive tests are positive. “The first thing is to perform a clinical assessment because although many cases of cognitive impairment go undiagnosed, 10% of the cases of symptomatic dementia are potentially reversible. We shouldn’t overlook these.” These cases of dementia may be brought on by medication use, alcoholism, chronic meningoencephalitis, toxins, normal pressure hydrocephalus, certain brain tumors, hypothyroidism, and nutritional deficits, among other causes. Functional assessment follows, using the scales mentioned above.
Interactions and deprescribing
“As to polypharmacy, there is underuse of good, evidence-backed medications with no major contraindications. But care must also be taken with inappropriate or off-label medications, overtreatment, drug interactions, and adherence,” said Dr. Freire.
“We need to start deprescribing because the chemical basis of cognitive impairment traces back to reduced cholinergic activity, increased dopaminergic activity in the brain, or both. There are many commonly prescribed drugs with anticholinergic interactions that can cause cognitive disorders. These could be psychotropics, hypnotics, analgesics (nonsteroidal anti-inflammatory drugs), first-generation antihistamines, antihypertensives, antiarrhythmics, histamine2 blockers, and even antibiotics like penicillin and quinolones, among many others,” he emphasized.
The next step is to perform comprehensive laboratory testing to rule out vitamin and mineral deficiencies, diabetes, thyroid disorders, kidney failure, liver diseases, urinary infections, and infections of the central nervous system. After that, neuroimaging should be performed. MRI is the preferred method because it allows quantification of atrophy and volumetric measurements.
Strict cardiovascular control
“At this point, treatment can be started, and the patient can be referred to secondary care,” said Dr. Freire, as he proceeded through a therapeutic algorithm following diagnosis of the patient. Regular exercise increases coordination synapses, prevents disease onset, improves executive function, and delays the onset of dementia. “The problem lies in not knowing how much time should be spent daily and weekly on exercise to achieve these goals.
“It is known that a Mediterranean diet and omega-3 fatty acids improve cognitive impairment. However, care should be taken with omega-3s as they are no longer helpful in dementia that has already been established.” The importance of strictly controlling cardiovascular risk factors must also be kept in mind, as backed by validated studies; it has been shown that blood pressure levels below 128 mm Hg make mild cognitive impairment and dementia worse, atrial fibrillation increases the risk of dementia by a factor of 1.4-2.4, diabetes is a risk factor for developing amnestic mild cognitive impairment, tobacco use also leads to cognitive impairment – even in individuals exposed to second-hand smoke – and statins do not change the risk in cases of dyslipidemia.
Nondrug treatment
Dr. Freire also highlighted the importance of multiple nondrug therapies in this field, such as cognitive training and rehabilitation, reminiscence, music therapy, cognitive-behavioral psychotherapy, and sensory interventions, among others. He also recommended patient groups for these individuals.
He added: “In mild cognitive impairment, there is currently no drug that is an improvement over nondrug therapies.”
The drugs aim to improve memory loss, prevent or delay the onset of mild cognitive impairment, and treat initial symptoms of dementia if applicable. The most commonly prescribed drugs are citicoline alone in vascular disease and memory loss, EGb 761 (which is the only approved dose-dependent drug), and others such as phosphatidylserine, nimodipine, and memantine combined with galantamine or piracetam, Dr. Freire concluded.
Dr. Freire had declared receiving funding as a student in training and outreach activities for popular science sponsored by Ferrer, and on the topic of pain by Esteve, Grünenthal Pharma, and Menarini. He has also reported being a consultant for GSK, Lilly, and Pfizer.
A version of this article first appeared on Medscape.com.