Depression and chronic diabetic foot disability. A case report of suicide

Insulin-Related Suicides-3 Cases

Insulin is a pancreas-produced hormone, which is essential for normal life. In persons with diabetes, who lack sufficient production of endogenous insulin, the availability of exogenously-produced and administered insulin represents an extremely valuable, life-preserving medical advancement. Unfortunately, as with many other medications, overdosage with insulin can and does occur, sometimes in an intentional suicidal manner. Another possible insulin-related suicidal action involves the intentional cessation of insulin therapy by someone who relies on insulin for survival. In this case series, we present 3 cases of insulin-related suicides, including two related to intentional insulin overdose and one where a known diabetic purposefully stopped taking insulin in order to commit suicide.

Intentional Insulin Overdose and Depression in Subjects with and Without Diabetes Mellitus: A Commentary

Insulin is an essential medication for people with type 1 diabetes mellitus and for some people with type 2 diabetes. Interestingly, insulin abuse has been reported as a mode of suicide, not only among people with diabetes, but also among their relatives, and among medical and paramedical personnel who have access to insulin. The aim of the present commentary was to raise awareness of potential depression-related intentional insulin overdose and its complications, as well as of the diagnosis and treatment of this entity. Insulin overdose may lead to severe and prolonged hypoglycemia, hypoglycemic coma, and death. Moreover, hypokalemia, hypomagnesemia, hypophosphatemia, and elevated liver enzymes are common. Insulin overdose should be suspected among people with diabetes in case of unexplained prolonged hypoglycemia and among people without diabetes who exhibit hypoglycemia and may have access to diabetic medications. The ratio of insulin to C-peptide helps distinguish exogenous insulin administration from endogenous secretion. The cornerstone of therapy is prompt administration of concentrated glucose infusions for days with simultaneous oral intake, when possible, and intense glucose monitoring to prevent hypoglycemia. Moreover, monitoring of serum electrolyte levels is recommended. Finally, psychiatric evaluation aiming at early identification of depression and suicidality is of paramount importance.

Characteristics of fatal insulin overdoses

This study was undertaken to review fatal cases of insulin overdose in South Australia (SA) over a 20-year period to assess rates and characteristics of insulin-related deaths among insulin-dependent diabetics and non-diabetics for all manners of death. Records from the National Coronial Information System (NCIS) and Forensic Science SA (FSSA) were searched for all cases of fatal insulin overdose in South Australia (SA) between 2000 and 2019. Collected variables included age, sex, cause of death, scene findings, manner of death, decedent medical and personal histories, biochemistry, toxicology, histopathology, and autopsy findings. Statistical analyses were performed using R (version 4.1.2). Forty cases of insulin overdose were identified in SA between 2000 and 2019. Twenty-nine cases (72.5%) were suicides, with the remaining cases classified as accidental or undetermined intent. Thirteen of the 22 insulin-dependent diabetics (59%) had a history of depression, 10 of whom had previously demonstrated suicidal ideation. The current study has shown that suicides using insulin among insulin-dependent diabetics are equally as prevalent, if not more so than fatal accidental insulin overdoses. This can largely be attributed to insulin-dependent diabetic access to a potentially lethal substance. Suicide prevention strategies should focus on insulin-dependent diabetics with a history of depression, particularly for those with access to rapid-acting insulin.

Insulin and Oral Hypoglycemic Drug Overdose in Post-Mortem Investigations: A Literature Review

Background and Objectives: Insulin and oral hypoglycemic agents are drugs widely used in the world population due to their therapeutic effects on diabetes mellitus. Despite these benefits, they can also cause accidental or voluntary drug overdose. This review aims to evaluate post-mortem investigations in cases of suspected hypoglycemic drug overdose. Materials and Methods: We performed a comprehensive search using the Preferred Reporting Items for Systematic Review (PRISMA) standards; we systematically searched the PubMed, Science Direct Scopus, Google Scholar, and Excerpta Medica Database (EM-BASE) databases from the point of database inception until August 2022. The following inclusion criteria were used: (1) original research articles, (2) reviews and mini-reviews, (3) case reports/series, (4) and only papers written in English. Results: Thirty-three scientific papers, including original research articles, case reports, and case series, fulfilled the inclusion criteria. A total of 109 cases of insulin or hypoglycemic drug overdose were found. There were 71 cases of suicide (65%), 25 cases of accidental poisoning (23%), and 13 cases of homicide (12%). The most commonly used drug was insulin (95.4%). Autopsy and post-mortem examinations were performed in 84 cases, while toxicological investigations were performed in 79 cases. The most common gross findings in the autopsy were pulmonary edema (55.7%) and congestion (41.8%), while the most common histological finding was neuronal depletion or necrosis (29.1%). Conclusions: In the suspicion of death from insulin or overdose from oral hypoglycemic agents, autopsy findings may be nonspecific, and the search for injection marks can be positive at the external examination. Significant post-mortal alterations can interest biological samples and an early autopsy investigation is recommended.

Making the Case for Suicide Risk Screening in Outpatient Podiatry Patients: An Opportunity for Injury Prevention

BACKGROUND

Despite prevention efforts, suicide rates continue to rise, prompting the need for novel evidence-based approaches to suicide prevention. Patients presenting with foot and ankle disorders in a podiatric medical and surgical practice may represent a population at risk for suicide, given risk factors of chronic pain and debilitating injury. Screening has the potential to identify people at risk that may otherwise go unrecognized. This quality improvement project aimed to determine the feasibility of implementing suicide risk screening in an outpatient podiatry clinic and ambulatory surgical center.

METHODS

A suicide risk screening quality improvement project was implemented in an outpatient podiatry clinic and ambulatory surgical center in collaboration with a National Institute of Mental Health suicide prevention research team. Following training for all staff, patients aged 18 years and older were screened for suicide risk with the Ask Suicide-Screening Questions as standard of care. Clinic staff were surveyed about their opinions of screening.

RESULTS

Ninety-four percent of patients (442 of 470) agreed to be screened for suicide risk and nine patients (nine of 442 [2%]) were screened as nonacute positive; zero patients were screened as acute risk. The majority of clinic staff reported that they found screening acceptable, felt comfortable working with patients who have suicidal thoughts, and thought screening for suicide risk was clinically useful.

CONCLUSIONS

Suicide risk screening was successfully implemented in an outpatient podiatry clinic. Screening with the Ask Suicide-Screening Questions instrument provided valuable information that would not have been ascertained otherwise, positively impacting clinical decision-making and leading to improved overall care for podiatry patients.

Does the diabetic foot have a significant impact on selected psychological or social characteristics of patients with diabetes mellitus?

The aim of our case-control study was to compare selected psychological and social characteristics between diabetic patients with and without the DF (controls).

METHODS

104 patients with and 48 without DF were included into our study. Both study groups were compared in terms of selected psychosocial characteristics.

RESULTS

Compared to controls, patients with DF had a significantly worse quality of life in the area of health and standard of living as shown by lower physical health domain (12.7 ± 2.8 versus 14.7 ± 2.5; P < 0.001) and environment domain (14.1 ± 2.2 versus 15 ± 1.8; P < 0.01) that negatively correlated with diabetes duration (r = -0.061; P = 0.003). Patients with DF subjectively felt more depressed in contrast to controls (24.5 versus 7.3%; P < 0.05); however, the depressive tuning was objectively proven in higher percentage in both study groups (83.2 versus 89.6; NS). We observed a significantly lower level of achieved education (P < 0.01), more patients with disability pensions (P < 0.01), and low self-support (P < 0.001) in patients with the DF compared to controls. In the subgroup of patients with a previous major amputation and DF (n = 6), there were significantly worse outcomes as in the environment domain (P < 0.01), employment status, and stress readaptation (P < 0.01) in contrast to the main study groups.

CONCLUSIONS

Patients with DF had a predominantly worse standard of living. In contrast to our expectations, patients with DF appeared to have good stress tolerability and mental health (with the exception of patients with previous major amputation) and did not reveal severe forms of depression or any associated consequences.

Suicidal tendencies among the elderly in Mie Prefecture, Japan, between 1996 and 2002

This study aims to show the causative factors of suicide among the elderly (over 65) in Mie Prefecture, and to discuss the prevention of the factors contributing to suicide in the elderly group. We obtained an agreement from the Mie Prefectural Police Headquarters and investigated all inquest records collected between 1996 and 2002 in Mie Prefecture and focused on suicide in the elderly group. During the test period, the number of suicides in the elderly group was 842. In causative factors, the two major causative factors of suicide were "suffering from physical illness" and "psychiatric disorders". In particular, the three most frequent physical illnesses were "cardiovascular disease", "orthopedic disorder", and "digestive organ disease", and these physical illnesses are mentally stressful, and thus have a psychiatric component, the same as psychiatric illnesses do. Consequently, it is concluded that improvements in the home nursing and mental health care should include the prevention of suicide in the elderly who "suffer from physical illness" and "psychiatric disorders" to prevent suicide. In addition, medical staff and the general public should be educated on the factors that can influence elderly persons' mental condition, and should be cautioned to observe elderly persons for suicidal signs and symptoms.