Exploring the interplay between dementia, multiple health conditions and couplehood: A qualitative evidence review and meta-ethnography.

Background: On average, people with dementia live with 4.6 additional health conditions. Additionally, two thirds of carers of people with dementia are spouses, and are also likely to live with multimorbidity, given that older age is strongly associated with an increase in health conditions. Consequently, living with dementia and multimorbidity is often a shared experienced as a couple. However, research has not explored how living with both dementia and multimorbidity may impact on couplehood. Method: We conducted a qualitive evidence review using a meta-ethnographic approach, to answer the following question: In what way (if any) does living with dementia and multimorbidity impact on couplehood? No papers were found on couplehood, dementia and multimorbidity, therefore the review consists of a meta-synthesis of couples' experiences of living with dementia in relation to couplehood, with an additional search for any data related to health within the qualitative findings. Findings: Two major reciprocal themes and five subthemes were identified from the 14 study findings. 1. Change and adjustment in the relationship, which included themes around a sense of 'togetherness', change in roles and identity and developing shared coping strategies and 2. Commitment, which was encapsulated by themes on unconditional love and commitment to wedding vows. Health-related findings were limited but included the impact on emotional wellbeing and how other health conditions, rather than dementia, were attributed to a loss in physical sexual intimacy. Conclusion: This review found that couplehood was threatened when dementia symptoms progressed and couples experienced feelings of loss of independence and identity. However, a strong foundation of commitment, love and loyalty to each other developed over the course of the relationship, was the 'glue' that helped couples face dementia together. However, further research is needed to explore couples' experiences of living with both multimorbidity and dementia in relation to couplehood in order to develop holistic, relationship-centred interventions.

Conceptualising comorbidity and multimorbidity in dementia: A scoping review and syndemic framework.

Background: Older people and people with dementia experience a high prevalence of multiple health conditions. The terms 'comorbidity' and 'multimorbidity' are often used interchangeably to describe this, however there are key conceptual differences between these terms and their definitions. This has led to issues in the validity and comparability of research findings, potentially inappropriate intervention development and differences in quality of health care. Objective: To review how the terms 'comorbidity' and 'multimorbidity' are defined within peer-reviewed dementia research and propose an operational framework. Design: A scoping review of definitions within dementia research was carried out. Searches took place across five databases: Academic Search Premier, CINAHL Complete, MEDLINE, PsycARTICLES and PsycINFO. PRISMA-ScR guidelines were followed. Results: Content analysis revealed five key themes, showing significant overlap and inconsistencies from both within, and between, the comorbidity and multimorbidity definitions; 1. Number of conditions; 2. Type of health conditions; 3. The co-occurrence of conditions; 4. The inclusion of an index disease (or not); 5. Use of medical language. The analysis also revealed gaps in how the underlying concepts of the definitions relate to people with dementia living with multiple health conditions. Conclusion: This scoping review found that current definitions of comorbidity and multimorbidity are heterogeneous, reductionist and disease-focussed. Recommendations are made on the design of research studies including transparency and consistency of any terms and definitions used. A syndemic framework could be a useful tool for researchers, clinicians and policy makers to consider a more holistic picture of a person with dementia's health and wellbeing.