Carbon monoxide poisoning in Utah: 1996-2013.

INTRODUCTION: The true incidence of carbon monoxide (CO) poisoning is not clearly known, but a description of possible trends could aid in prevention. METHODS: Investigators searched Utah state databases for emergency department (ED) visits and admissions for CO poisoning and medical examiner records for CO-related fatalities. RESULTS: From 1996-2013, 7,590 individuals were diagnosed with CO poisoning: 6,469 were treated/ released from EDs; 596 were admitted; 525 died. Of 7,065 non-fatal poisonings, 5,950 (84%) were accidental and 498 (7%) were suicide attempts. Few patients (9.7%) were treated with hyperbaric oxygen. For accidental poisonings, internal combustion engines accounted for 43%, smoke inhalation, 34%, and heating sources, 22%. Internal combustion engines were implicated in 97% of suicide attempts. Non-fatal poisonings declined following a 2008 legislative change requiring CO alarms in residences, but we do not know if legislation caused the decline. One hundred forty-one (27%) fatal poisonings were accidental, 361 (70%) suicides and two (0.4%) homicides. Victims with cardiovascular autopsy findings/past cardiovascular history had lower carboxyhemoglobin levels (mean 51.2%, n=53) compared to those without (70.8%, n=472). Mean postmortem carboxyhemoglobin was highest in ages 20-29 years (72.5%). CONCLUSIONS: The incidence of CO poisoning in Utah is declining, but CO poisoning is still common. Alarm legislation may aid prevention efforts. An educational campaign addressing the many causes and circumstances of CO poisoning is required for prevention.

Risk factors for prescription opioid-related death, Utah, 2008-2009.

OBJECTIVE: Utah prescription opioid death rates increased nearly fivefold during 2000-2009. Inadequate understanding of risk factors hinders prevention. The goal of this study was to determine risk factors for prescription opioid death in Utah. DESIGN: Case-control study. Cases were 254 Utah decedents with ≥1 prescription opioid causing death during 2008-2009 with nonintentional manner of death (information obtained via next-of-kin interviews). Controls were 1,308 Utah 2008 Behavioral Risk Factor Surveillance System respondents who reported prescription opioid use during the previous year. OUTCOME MEASURES: Exposure prevalence ratios (EPRs) for selected characteristics and confidence intervals (CIs) were calculated. RESULTS: Decedents were more likely than the comparison group to have used prescription pain medication more than prescribed (52.9% vs 3.2%; EPR, 16.5; 95% CI, 9.3-23.7), obtained prescription pain medication from nonprescription sources (39.6% vs 8.3%; EPR, 4.8; 95% CI, 3.6-6.0), smoked daily (54.5% vs 9.7%; EPR, 5.6; 95% CI, 4.4-6.9), not graduated high school (18.5% vs 6.2%; EPR, 3.0; 95% CI, 2.0-3.9), and been divorced or separated (34.6% vs 9.4%; EPR, 3.7; 95% CI, 3.0-4.4). Decedents were more likely to have had chronic pain than the comparison group (94.2% vs 31.6%; EPR, 3.0; 95% CI, 2.7-3.3). CONCLUSIONS: Use of pain medication outside prescription bounds was a risk factor for death. However, decedents were more likely to have had chronic pain, and the majority of both groups had obtained pain medication by prescription. Other factors (e.g., smoking status) might also play important roles in prescription opioid-related death. Prescribers should screen chronic pain patients for risk factors.

An analysis of the root causes for opioid-related overdose deaths in the United States.

OBJECTIVE: A panel of experts in pain medicine and public policy convened to examine root causes and risk factors for opioid-related poisoning deaths and to propose recommendations to reduce death rates. METHODS: Panelists reviewed results from a search of PubMed and state and federal government sources to assess frequency, demographics, and risk factors for opioid-related overdose deaths over the past decade. They also reviewed results from a Utah Department of Health study and a summary of malpractice lawsuits involving opioid-related deaths. RESULTS: National data demonstrate a pattern of increasing opioid-related overdose deaths beginning in the early 2000s. A high proportion of methadone-related deaths was noted. Although methadone represented less than 5% of opioid prescriptions dispensed, one third of opioid-related deaths nationwide implicated methadone. Root causes identified by the panel were physician error due to knowledge deficits, patient non-adherence to the prescribed medication regimen, unanticipated medical and mental health comorbidities, including substance use disorders, and payer policies that mandate methadone as first-line therapy. Other likely contributors to all opioid-related deaths were the presence of additional central nervous system-depressant drugs (e.g., alcohol, benzodiazepines, and antidepressants) and sleep-disordered breathing. CONCLUSIONS: Causes of opioid-related deaths are multifactorial, so solutions must address prescriber behaviors, patient contributory factors, nonmedical use patterns, and systemic failures. Clinical strategies to reduce opioid-related mortality should be empirically tested, should not reduce access to needed therapies, should address risk from methadone as well as other opioids, and should be incorporated into any risk evaluation and mitigation strategies enacted by regulators.

Protein-based forensic identification using genetically variant peptides in human bone.

Bone tissue contains organic material that is useful for forensic investigations and may contain preserved endogenous protein that can persist in the environment for extended periods of time over a range of conditions. Single amino acid polymorphisms in these proteins reflect genetic information since they result from non-synonymous single nucleotide polymorphisms (SNPs) in DNA. Detection of genetically variant peptides (GVPs) - those peptides that contain amino acid polymorphisms - in digests of bone proteins allows for the corresponding SNP alleles to be inferred. Resulting genetic profiles can be used to calculate statistical measures of association between a bone sample and an individual. In this study proteomic analysis on rib cortical bone samples from 10 recently deceased individuals demonstrates this concept. A straight-forward acidic demineralization protocol yielded proteins that were digested with trypsin. Tryptic digests were analyzed by liquid chromatography mass spectrometry. A total of 1736 different proteins were identified across all resulting datasets. On average, individual samples contained 454±121 (x¯±σ) proteins. Thirty-five genetically variant peptides were identified from 15 observed proteins. Overall, 134 SNP inferences were made based on proteomically detected GVPs, which were confirmed by sequencing of subject DNA. Inferred individual SNP genetic profiles ranged in random match probability (RMP) from 1/6 to 1/42,472 when calculated with European population frequencies in the 1000 Genomes Project, Phase 3. Similarly, RMPs based on African population frequencies were calculated for each SNP genetic profile and likelihood ratios (LR) were obtained by dividing each European RMP by the corresponding African RMP. Resulting LR values ranged from 1.4 to 825 with a median value of 16. GVP markers offer a basis for the identification of compromised skeletal remains independent of the presence of DNA template.

Detection of Acetaminophen-Protein Adducts in Decedents with Suspected Opioid-Acetaminophen Combination Product Overdose.

Acetaminophen overdose is a leading cause of drug-induced liver failure in the United States. Acetaminophen-protein adducts have been suggested as a biomarker of hepatotoxicity. The purpose of this study was to determine whether protein-derived acetaminophen-protein adducts are quantifiable in postmortem samples. Heart blood, femoral blood, and liver tissue were collected at autopsy from 22 decedents suspected of opioid-acetaminophen overdose. Samples were assayed for protein-derived acetaminophen-protein adducts, acetaminophen, and selected opioids found in combination products containing acetaminophen. Protein-derived APAP-CYS was detected in 17 of 22 decedents and was measurable in blood that was not degraded or hemolyzed. Heart blood concentrations ranged from 11 ng/mL (0.1 µM) to 7817 ng/mL (28.9 µM). Protein-derived acetaminophen-protein adducts were detectable in liver tissue for 20 of 22 decedents. Liver histology was also performed for all decedents, and no evidence of centrilobular hepatic necrosis was observed.

Preliminary findings of noncompliance with psychotropic medication and prevalence of methamphetamine intoxication associated with suicide completion.

OBJECTIVE: A study of medical examiner records from suicide completers was designed to identify potential precipitating factors in the decision to commit suicide. METHODS: Forensic data has been collected for a subset of suicide victims in Utah who completed suicide between 1996 and 2002. RESULTS: Youth suicide completers appear to be undiagnosed for mental illness, or to be noncompliant with psychotropic medications. Along with treatment issues, alcohol and methamphetamine were the most common substances found in the blood and/or urine of suicide completers. CONCLUSIONS: Accurate diagnosis of mental illness, and improved compliance with psychotropic medications may play a critical role in suicide prevention. The prevalence of methamphetamine in suicide completers is unexpectedly high and requires further investigation.

The skull and cervical spine radiographs of Tutankhamen: a critical appraisal.

BACKGROUND AND PURPOSE: Tutankhamen, the last pharaoh of the XVIIIth dynasty, died unexpectedly at approximately age 18 years. A cause of death has never been established, but theories that the young king was murdered by a blow to the head have been proposed based on skull radiographs obtained by a team from the University of Liverpool in 1968. We recently had the opportunity to evaluate the skull and cervical spine radiographs of Tutankhamen. The purpose of this study was to report our critical appraisal of the radiographs of Tutankhamen regarding the findings alleged to indicate traumatic death. METHODS: Copies of lateral, anteroposterior, and submental vertex skull radiographs of Tutankhamen were reviewed with special attention to the claims of a depressed skull fracture, intracranial bone fragments, and calcified membrane of a posterior fossa subdural hematoma. A phantom skull was radiographed to reproduce the appearance of the floor of the posterior fossa in the lateral projection. RESULTS: The skull radiographs of Tutankhamen show only postmortem artifacts that are explainable by an understanding of the methods of mummy preservation used at the time of his death. Some findings also relate to trauma inflicted by an autopsy performed in 1925. The alleged calcified membrane of a posterior fossa subdural hematoma is easily reproduced with a skull phantom. CONCLUSION: Our critical review of the skull and cervical spine radiographs of Tutankhamen does not support proposed theories of a traumatic or homicidal death.

Comparative analysis of suicide, accidental, and undetermined cause of death classification.

Suicide determination is not standardized across medical examiners, and many suspected suicides are later classified as accidental or undetermined. The present study investigated patterns between these three groups using a medical examiner database and 633 structured interviews with next of kin. There were similarities across all three classification groups, including rates of mental illness and psychiatric symptoms. Those classified suicide were more likely to be male, to have died in a violent fashion, and have a stronger family history of suicide. Chronic pain was very common across all three groups, but significantly higher in the accidental and undetermined groups.

Best practices: the Utah Youth Suicide Study: best practices for suicide prevention through the juvenile court system.

Utah is among a group of Western Mountain states in which suicide rates among youths are consistently high. The Utah Youth Suicide Study incorporated data from every government agency in Utah, utilizing a statewide Office of the Medical Examiner. A key finding was that 63% of suicide decedents had contact with the juvenile courts. The group developed a best practices model within the juvenile court system for early mental health intervention. Significant cost savings were demonstrated. The model includes screening at-risk teenagers with the Youth Outcome Questionnaire. Treatment includes both psychiatric care and in-home behavioral intervention. Services were effectively delivered on a large scale.