[Profile of the informal carer associated with the clinical management of the Alzheimer's disease patient refractory to symptomatic treatment of the disease].

INTRODUCTION Many factors influence the satisfaction and quality of life of informal caregivers of non-responder patients with Alzheimer disease (AD). Among these include, the course of the disease, cognitive impairment and behavioural disturbances of the patient, the level of family support and caregiver inherent factors such as, time commitment, psychological status and awareness of the disease. The aim of this work is to determine the profile of informal caregivers of non-responder AD patients and to evaluate the different factors that affect their quality of life, burden and overall satisfaction with treatment. PATIENTS AND METHODS We carried out a prospective and multicentre study in Spain that included a total of 249 AD patients unresponsive to anticholinesterase treatment, and their informal caregivers. We evaluated caregivers' quality of life with the SF-36 questionnaire and their associated burden with the Zarit scale, both validated for Spain. The severity and progression of the disease was quantified according to Clinical Dementia Rating (CDR) and Mini-Mental State Examination (MMSE). RESULTS Caregiver burden showed a significant increase with the time elapsed since the start of the study, while treatment satisfaction increased slightly with this factor. Caregiver burden is highly correlated with CDR scale on patient symptoms, both in the initial visit (p<.0001) and final visit (p=.0001). Caregiver satisfaction with treatment was mainly affected by the degree of change in cognitive deterioration experienced by the patient between the two visits (p=.021). CONCLUSIONS Overall satisfaction with the treatment stated by the caregiver does not correlate with compliance to treatment, but it does so with the changes in patient's cognitive impairment, a factor that also influences caregiver's burden.