Suicidal and accidental drug poisoning mortality among older adults and working-age individuals in Spain between 2000 and 2018

Repeated hospital admission for intentional poisonings among older adults - a Swedish national register-based study

BACKGROUND

Poisoning injuries is an increasing concern among older people, and so is the repetition of intentional poisonings. To date, few studies have documented the pattern and individual risk factors for repeated poisonings. This national study aims to shed light on the burden, pattern, and health-related risk factors of repeated intentional poisoning leading to hospitalization or death among older Swedish adults (50 years and older), with a focus on the year following a first event.

METHODS

We conducted a nationwide register-based cohort study of people aged 50-100, hospitalized for intentional poisoning (ICD10: X60-69) during 2006-2016 (n = 15,219) and re-hospitalized by poisoning of any intent within a year (n = 1710), i.e., up to the end of 2017. We considered in turn, the distribution of the second poisoning in 30-day intervals stratified by intent; poisoning lethality within a month and a year; and the sex-specific association between health conditions and being re-hospitalized for intentional poisoning within one year as compared to being hospitalized only once using logistic regression (odds ratios (OR) with 95% confidence intervals (95% CI)).

RESULTS

Following an intentional poisoning, re-hospitalization within a year was predominantly for a new intentional poisoning (89.7%) and occurred most typically within a month (median 4 days). Death within 30 days occurred in similar proportion for the first and second poisoning (2.3% vs. 2.1% respectively). Among both men and women, comorbidity of psychiatric illness was strongly associated with re-hospitalization for intentional poisoning (adjusted ORs = 1.70; 95% CI = 1.45-2.01 and 1.89 (95% CI = 1.60-2.19) respectively).

CONCLUSION

Most re-hospitalizations within a year after intentional poisoning are also for intentional poisoning and occur most typically within days. Re-hospitalization is associated with several conditions that are characteristic of poor mental health and there are more similarities than differences between men and women in that respect.

Trends in intentional and unintentional poisonings among older adults - A national register-based study in Sweden

BACKGROUND

Among older people intentional poisoning outnumber unintentional ones. While there are indications that time trends differ by poisoning intent, studies are scarce. We assessed how the annual prevalence of intentional and unintentional poisoning changed over time, overall and by demographic groups.

METHODS

We conducted a national open cohort study of individuals aged 50-100 years, resident in Sweden during 2005-2016. Individuals were followed up in population-based registers for their demographic and health attributes from 2006-2016. Annual prevalence of hospitalization and death by poisoning intent (unintentional vs. intentional or undetermined; ICD-10 definitions) were compiled for the categories of four demographic attributes (age, sex, marital status, and birth cohort "baby boomers"). The time trends were assessed by multinomial logistic regression with year as an independent variable.

RESULTS

The annual overall prevalence of hospitalization and death by intentional poisonings consistently exceeded that of unintentional poisonings. There was a significant downward trend in intentional poisonings but not in unintentional ones. This difference in trends also applied when considering men and women separately, married and unmarried people, the young-old individuals (but not the older- or oldest-old ones), and the baby boomers and non-baby boomers. The largest demographic differences within intent were found between married and unmarried people, and the smallest one between men and women.

CONCLUSION

As expected, the annual prevalence of intentional poisonings considerably exceed that of unintentional ones among Swedish older people. The recent trends reveal a significant reduction of intentional poisonings, consistent across a range of demographic attributes. The scope for action regarding this preventable cause of mortality and morbidity remains considerable.

Avicenna's clinical toxicology approach and beneficial materia medica against oral poisoning

Considering the rich background of Persian Medicine in the use of materia medica for the treatment of diseases, the huge burden of oral poisonings in the world, and the urgent need to find scientific solutions, the purpose of this study was to determine Avicenna's approach toward clinical toxicology and his proposed treatments for oral poisonings. In Al-Qanun Fi Al-Tibb, Avicenna addressed the materia medica for the treatments of oral poisonings after explaining the ingestion of different toxins and also elucidating the clinical toxicology approach toward poisoned patients. These materia medica were from different classes including emetics, purgatives, enemas, diaphoretics, antidiarrheals, inhaled drugs, sternutators, anticoagulants, antiepileptics, antitussives, diuretics, cooling drugs, stimulants, cardiotonic drugs, and heating oils. By applying different therapies, Avicenna endeavored to attain main goals in clinical toxicology that are comparable with modern medicine. They included removing the toxins from the body, decreasing the severity of the deleterious effects of toxins on the body, and counteracting the effects of toxins inside the body. Aside from introducing different therapeutic agents that played an important role in the treatment of oral poisonings, he emphasized the ameliorating effects of nutritive foods and beverages. Further research using other Persian medical resources is recommended to elucidate the applicable approaches and treatments for different poisonings.

Poisonings in Older People with Dementia: A Systematic Scoping Review and Meta-Analysis

BACKGROUND

Older people with dementia are at a particularly high risk of poisonings and their subsequent harms.

OBJECTIVE

This review aimed to describe the key agents, incidence, risk factors, and disposition of poisonings in people with dementia reported in the literature.

METHODS

Medline, Embase, CINAHL, and PsycINFO databases were searched from 1 September 2001 to 1 September 2021. Terms for dementia, poisonings, and older adults formed the search concepts. Quantitative studies published in English, describing poisonings in older people with dementia, including Alzheimer's disease, were included. Two investigators independently assessed articles for eligibility and extracted relevant data. A meta-analysis of the incidence of poisonings in people with dementia across studies was performed.

RESULTS

Of 4,579 articles, 18 were included for final synthesis. Nervous system medications were implicated in over half of all medicinal poisonings, with anti-dementia agents, benzodiazepines, and opioids the most common classes. The non-medicinal agents frequently associated with poisonings were personal care and household products. The yearly incidence of poisoning varied across definitions of poisoning from 3% for International Classification of Disease-defined poisonings to 43% for adverse drug event-defined poisonings. Several risk factors were identified, including multimorbidity, psychotropic medication use, and living in residential care. Where described, up to one in five poisonings resulted in hospitalisation and in death.

CONCLUSIONS

Poisonings are common in people with dementia, involving commonly prescribed medications or easily accessible substances. Given the significant outcomes associated, further research is required to better understand these poisonings and improve public health strategies to reduce the occurrence of this preventable harm.