The Insulin Pump as Murder Weapon

The Other Face of Insulin—Overdose and Its Effects

Insulin is the most effective glycemic-lowering drug, and for people suffering from type 1 diabetes it is a life-saving drug. Its self-dosing by patients may be associated with a higher risk of overdose, both accidental and deliberate. Insulin-induced hypoglycemia causes up to 100,000 emergency department calls per year. Cases of suicide attempts using insulin have been described in the literature since its introduction into therapy, and one of the important factors in their occurrence is the very fact of chronic disease. Up to 90% of patients who go to toxicology wards overdose insulin consciously. Patients with diabetes are burdened with a 2–3 times higher risk of developing depression compared to the general population. For this reason, it is necessary to develop an effective system for detecting a predisposition to overdose, including the assessment of the first symptoms of depression in patients with diabetes. A key role is played by a risk-conscious therapeutic team, as well as education. Further post-mortem testing is also needed for material collection and storage, as well as standardization of analytical methods and interpretation of results, which would allow for more effective detection and analysis of intentional overdose—both by the patient and for criminal purposes.

Death Investigation of Diabetes Mellitus: Scene Investigation and Interrogation of Technology

Diabetes mellitus (DM) affects millions of Americans and is a common cause of death. The medical examiner/coroner (ME/C) may be called to investigate the death of a person with DM due to the possibility of a suicide, accident, or even homicide that relates to the treatment or lack of treatment of the disease. The ME/C can ellicit abundant circumstantial information from a death scene investigation and interrogation of devices such as glucometers, insulin pumps, continuous glucose monitors, and insulin injector pens used for the management of diabetes. These devices contain stored information that can very powerfully assist the ME/C in determining the cause and manner of death. This article provides a review of DM treatment and common medical devices used in the treatment and management of DM, offers the ME/C some instruction for interrogating the devices on their own, and highlights the benefits of beholding the information contained within the devices. At the conclusion of this review, the reader should have an understanding of how these devices work, how the information they contain can be accessed, and how useful that information can be in death investigation.

The Certification of Fatalities Related to Diabetes Mellitus: A Shot in the Dark?

Worldwide, an estimated 415 million people have diabetes mellitus, which results in extensive morbidity and mortality. In order to track the effect of diabetes on mortality statistics, deaths in which diabetes mellitus caused or contributed to death must be recognized, included on the death certificate, and then properly coded for vital statistic purposes. For public health policy, this will help determine the extent of the disease and follow whether deaths increase or decrease. There is variation among death certifiers for when and how diabetes is included on the death certificate and among vital records bureaus as how to code diabetes-related deaths. Case scenarios are presented to highlight the certification issues that arise with deaths related to diabetes mellitus. This area of death certification may benefit from a consensus effort to standardize and enhance certification and coding of deaths due to diabetes in order to improve the reliability of these mortality statistics.

Brainjacking: Implant Security Issues in Invasive Neuromodulation

The security of medical devices is critical to good patient care, especially when the devices are implanted. In light of recent developments in information security, there is reason to be concerned that medical implants are vulnerable to attack. The ability of attackers to exert malicious control over brain implants ("brainjacking") has unique challenges that we address in this review, with particular focus on deep brain stimulation implants. To illustrate the potential severity of this risk, we identify several mechanisms through which attackers could manipulate patients if unauthorized access to an implant can be achieved. These include blind attacks in which the attacker requires no patient-specific knowledge and targeted attacks that require patient-specific information. Blind attacks include cessation of stimulation, draining implant batteries, inducing tissue damage, and information theft. Targeted attacks include impairment of motor function, alteration of impulse control, modification of emotions or affect, induction of pain, and modulation of the reward system. We also discuss the limitations inherent in designing implants and the trade-offs that must be made to balance device security with battery life and practicality. We conclude that researchers, clinicians, manufacturers, and regulatory bodies should cooperate to minimize the risk posed by brainjacking.

Suicide with Vecuronium and Etomidate: A Case Report and Review of the Literature

A case of suicidal death due to intravenous self-administration of vecuronium and etomidate by a registered nurse is being reported. Toxicologic blood analysis showed a vecuronium concentration of 0.023 mg/L, an etomidate concentration of 0.041 μg/mL, and an ethanol concentration of 113 mg/dL. The autopsy, toxicologic analysis, and crime scene investigation findings indicated that this was suicidal death caused by respiratory failure secondary to vecuronium administration exacerbated by sedation secondary to etomidate and ethanol use. Review of the medical literature and popular press media has identified several instances in which vecuronium has been used in homicidal deaths, but it has identified few cases in which vecuronium or etomidate, alone or in conjunction with another drug, have been used to commit suicide.

Simultaneous determination of atracurium and its metabolite laudanosine in post-mortem fluids by liquid chromatography/multiple-stage mass spectrometry on an ion trap

A method was developed to accurately quantify atracurium (a non-depolarizing skeletal muscle relaxant) and its metabolite laudanosine in post-mortem specimens. Analytes were isolated from blood and tissues by liquid/liquid extraction after adding vecuronium as an internal standard. Chromatographic separation was accomplished by gradient elution in a Synergy Max RP 150 x 2.1 mm column. Positive ion electrospray ionization and mass spectrometric analyses were carried out in an ion trap mass spectrometer under collision-induced dissociation conditions. The method proved selective and sensitive, and was validated in post-mortem blood, heart, lung and liver in the range of 1-2000 ng/mL (blood) and 5-5000 ng/g (tissues); the limits of quantification obtained were 1 ng/mL in blood and 5 ng/g in tissues.

The insulin pump: why not use it for every type I diabetic patient?

Critical care nurses are likely to care for patients with insulin pumps, and it is essential that they understand the rationale for using them selectively for individuals with diabetes mellitus. The assets and limitations of the technology associated with insulin pump use must be appreciated in regard to glycemic control during hospitalization. Although most patients and family members are well indoctrinated on insulin protocols, pump use, and self-monitoring, it is vital that nurses are aware of the unique issues that surface during critical illness.