The interest in poor magnesium (Mg) status as risk factor for Alzheimer's disease (AD) is increasing due to its antioxidant and neuroprotective properties. A systematic PubMed literature search of studies investigating Mg status was undertaken comparing AD to healthy controls (HCs) or patients with medical illness (medical controls [MCs]). Standardized mean differences (SMDs) ± 95% confidence intervals (CIs) were calculated for all outcomes. Of 192 potentially eligible studies, 13 were included (559 patients with AD, 381 HCs, and 126 MCs). Compared to HCs, patients with AD had significantly lower Mg in cerebrospinal fluid (2 studies; SMD = -0.35;P= .02) and in hair (2 studies; SMD = -0.75;P= .0001). No differences between AD and controls were evident for serum Mg. In conclusion, AD seems to be associated with a lower Mg status when compared to HCs, while the scarcity of studies limited the findings about MCs.
Our findings suggest that opinions concerning artificial nutrition and hydration not only derive from scientific background, but also relate to cultural, ethical, and psychological issues. Our results also reveal important differences between physicians' and nurses' opinions, providing useful information for interpreting and overcoming obstacles to the effective cooperation between these professionals.
The findings of the present study showed that AN creates more ethical dilemmas in the clinical management of end of life than other treatments, such as AH or AT. Opinions on whether or not these practices are appropriate at the end of life were related with feelings, thoughts and ethical issues that played a different part for physicians and nurses. Geriatr Gerontol Int 2017; 17: 487-493.
In the multidimensional analysis of older patients, troponin I can be used to stratify patients and assess mortality risk at 6 months, but not at 2 years.
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