Neuropsychiatric symptoms in mild cognitive impairment: An analysis and its impact on caregiving

Neuropsychiatric symptoms in patients with possible vascular cognitive impairment, does sex matter?

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Manifestations of neuropsychiatric symptoms in patients with VCI differ by sex.

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In women the presence of apathy was associated with higher risk of clinical progression.

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In men depression and aberrant motor behavior were associated with higher risk of progression.

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Management strategies of NPS could benefit from sex-specific approaches.

Background

Neuropsychiatric symptoms (NPS) are common in patients with vascular cognitive impairment (VCI). We aimed to establish sex differences in the manifestation of NPS in memory clinic patients with possible VCI and identify which NPS are determinants of clinical progression in women and men separately.

Methods

We included 718 memory clinic patients (age 68 ± 8; 45% women) with cognitive complaints and vascular brain lesions on MRI (i.e. possible VCI). NPS were measured using the 12-item Neuropsychiatric Inventory. Clinical progression after two years (women 18%, men 14%) was defined as increase in CDR ≥1 or institutionalization (available n = 589 without advanced dementia at baseline). The association between NPS and clinical progression was assessed with Cox proportional hazard models stratified by sex, adjusted for age and clinical diagnosis and in a second model additionally for manifestations of vascular brain lesions.

Results

Men more often presented with agitation (29% versus 17%, p<.05) and irritability (58% versus 45%, p<.05), the other 10 NPS (delusions, hallucinations, depression, anxiety, euphoria, apathy, disinhibition, aberrant motor behavior, nighttime disturbances and appetite & eating abnormalities) did not differ between sexes. In women the presence of apathy (HR 2.1[1.1;4.3]) was associated with higher risk of clinical progression. In men the presence of depression (HR 2.7[1.4;5.1]) and aberrant motor behavior (HR 2.1[1.1;3.8]) were associated with increased risk of clinical progression.

Conclusion

Manifestations of NPS in patients with possible VCI differ by sex. Different NPS are associated with future clinical progression in men and women. Management strategies of NPS could benefit from sex-specific approaches.

Non-Pharmacological Treatments of Neuropsychiatric Symptoms in Mild Cognitive Impairment (MCI)

Mild cognitive impairment (MCI) is a syndrome defined by objective cognitive deficits that do not impact functional independence. Individuals with MCI develop dementia at an annual rate of 10 to 15%. Neuropsychiatric symptoms (NPS) are common non-cognitive features of neurocognitive disorders and have a major impact on the wellbeing and quality of life of affected individuals and their families. Non-pharmacological interventions for NPS are considered the first-line treatment because of the limited efficacy and side-effect potential of current pharmacological agents. This article summarizes the literature on non-pharmacological treatments for NPS in MCI. The limited number of studies specific to individuals with MCI and its various etiologies, as well as the overall heterogeneity of research design and methodologies, make the evidence base inconclusive. Nevertheless, some studies support psychosocial interventions aimed at individuals with MCI and their caregivers.

Caregivers' emotional distress due to neuropsychiatric symptoms of persons with amnestic mild cognitive impairment or Alzheimer's disease

Compared to the literature on Alzheimer's disease (AD), less is known about the emotional distress of caregivers of persons with amnestic Mild Cognitive Impairment (aMCI). This study describes and compares emotional distress due to neuropsychiatric symptoms (NPS) among children and spousal caregivers of aMCI or mild AD care recipients. It also examined the association between the frequency and severity of NPS and caregivers' emotional distress. In total, 108 spouses or children of persons with aMCI or mild AD were administered the Neuropsychiatric Inventory, measuring the frequency/severity of NPS in the patient as well as the associated caregiver's emotional distress. Emotional distress due to each NPS was compared between children and spouses and the relationship between NPS and emotional distress was assessed. There was no significant difference in emotional distress between aMCI and mild AD spousal caregivers for all symptoms, but for children caregivers, emotional distress was significantly higher in the mild AD group than in the aMCI group. Regardless of the caregiver's relationship to the patient or the condition (aMCI vs mild AD) of the latter, there was a positive relationship between the frequency/severity of NPS and caregiver emotional distress. Caregivers of persons with aMCI experienced emotional distress due to the presence of NPS in their significant others at a level that is generally similar to that experienced by caregivers of persons with mild AD. This study highlights the need for interventions to reduce emotional burden by helping caregivers manage NPS in care recipients.

Caring for an individual with mild cognitive impairment: a qualitative perspective of health-related quality of life from caregivers

OBJECTIVES

Little is known regarding the effect that caring for an individual with Mild Cognitive Impairment (MCI) has on health-related quality of life (HRQOL). We sought to identify the most important aspects of HRQOL related to caring for an individual with MCI.

METHODS

Six focus groups were conducted with caregivers of individuals with MCI (n = 32). Qualitative frequency analysis was used to analyze the data.

RESULTS

Findings indicated that caregivers most frequently discussed social health, including changes in social roles and an increased need for social support (51.2% of the total discussion). This was followed by mental health concerns (37.9%) centering on anger/frustration, and a need for patience in the caregiving role, as well as caregiver-specific anxiety. Other topics included physical health (10.0%; including the impact that stress and burden have on medical heath), and caregivers' cognitive health (0.9%; including memory problems in relation to caregiver strain, sleep disruption, and cognitive fatigue).

CONCLUSIONS

Findings illustrate the multiple domains of HRQOL that are affected in individuals providing care for someone with MCI. Moreover, the findings highlight the need for extending support services to MCI caregivers, a group that is typically not offered support services due to the 'less severe' nature of an MCI diagnosis.