Aspiration in lethal drug abuse-a consequence of opioid intoxication.

AIMS: The primary objective of this study was to investigate whether the fatalities of opioid abuse are not only related to respiratory depression but also as a result of other side effects such as emesis, delayed gastric emptying, a reduction of the cough reflex, and impaired consciousness leading to the aspiration of gastric contents, a finding regularly observed in drug-related deaths. DESIGN: A retrospective exploratory study analyzing heroin/morphine/methadone-related deaths submitted to court-ordered autopsy. SETTING: Center for Forensic Medicine, Medical University of Vienna, Austria (2010-2015). PARTICIPANTS: Two hundred thirty-four autopsy cases were included in the study: morphine (n = 200), heroin (n = 11), and methadone (n = 23) intoxication. FINDINGS: Analyses revealed that 41.88% of all deceased showed aspiration of gastric contents with equal gender distribution (p = 0.59). Aspiration was more frequent in younger deceased (χ2 = 8.7936; p = 0.012) and in deceased with higher body mass index (BMI) (χ2 = 6.2441; p = 0.044). Blood opioid concentration was lower in deceased with signs of aspiration than in non-aspirators (p = 0.013). Toxicological evaluation revealed a high degree of concomitant substance abuse (91%)-benzodiazepines (61.6%) and/or alcohol (21.8%). CONCLUSIONS: There are lower opioid concentrations in deceased with signs of aspiration, a fact which strongly points to aspiration as alternative cause of death in opioid-related fatalities. Furthermore, this study highlights the common abuse of slow-release oral morphine in Vienna and discusses alternative medications in substitution programs (buprenorphine/naloxone or tamper-resistant slow-release oral morphine preparations), as they might reduce intravenous abuse and opioid-related deaths.

Comparative out-of-hospital mortality of long-acting opioids prescribed for non-cancer pain: A retrospective cohort study.

PURPOSE: Despite significant growth of opioid prescriptions, only limited data are available regarding the comparative safety of long-acting opioids for chronic non-cancer pain. Recent data suggest that transdermal fentanyl and oxycodone CR may have greater toxicity than morphine SR in patients with non-cancer pain. Thus, we compared the risk of out-of-hospital deaths in patients with non-cancer pain filling prescriptions for transdermal fentanyl or oxycodone CR with that for morphine SR. METHODS: We conducted a retrospective cohort study in 50 658 patients enrolled in Tennessee Medicaid who filled prescriptions for transdermal fentanyl (n = 8717), oxycodone CR (n = 14 118), or morphine SR (n = 27 823) between 1999 and 2011. We excluded individuals with cancer or other life-threatening diagnoses and used propensity scores to adjust for multiple potential confounders. The primary outcome was out-of-hospital mortality. RESULTS: During 44 385 person-years of follow-up, 689 patients died. The out-of-hospital mortality rate among all study subjects was 155/10 000 patient-years. Contrary to earlier data suggesting greater risk, mortality was not significantly different in patients filling prescriptions for transdermal fentanyl compared with morphine SR (adjusted HR = 0.96, 95% C.I.: 0.77-1.21); moreover, patients filling prescriptions for oxycodone CR had lower mortality risk compared with those filling prescriptions for morphine SR (adjusted HR = 0.79, 95% C.I. 0.66-0.95). CONCLUSION: In the study population, long-acting opioids for non-cancer pain were associated with high out-of-hospital mortality rates. We found comparable out-of-hospital mortality risks associated with transdermal fentanyl and morphine SR. The risk of out-of-hospital death for oxycodone CR was lower than that for morphine SR.

Nucleus Accumbens AMPA Receptors Are Necessary for Morphine-Withdrawal-Induced Negative-Affective States in Rats.

UNLABELLED: Dependence is a hallmark feature of opiate addiction and is defined by the emergence of somatic and affective withdrawal signs. The nucleus accumbens (NAc) integrates dopaminergic and glutamatergic inputs to mediate rewarding and aversive properties of opiates. Evidence suggests that AMPA glutamate-receptor-dependent synaptic plasticity within the NAc underlies aspects of addiction. However, the degree to which NAc AMPA receptors (AMPARs) contribute to somatic and affective signs of opiate withdrawal is not fully understood. Here, we show that microinjection of the AMPAR antagonist NBQX into the NAc shell of morphine-dependent rats prevented naloxone-induced conditioned place aversions and decreases in sensitivity to brain stimulation reward, but had no effect on somatic withdrawal signs. Using a protein cross-linking approach, we found that the surface/intracellular ratio of NAc GluA1, but not GluA2, increased with morphine treatment, suggesting postsynaptic insertion of GluA2-lacking AMPARs. Consistent with this, 1-naphthylacetyl spermine trihydrochloride (NASPM), an antagonist of GluA2-lacking AMPARs, attenuated naloxone-induced decreases in sensitivity to brain stimulation reward. Naloxone decreased the surface/intracellular ratio and synaptosomal membrane levels of NAc GluA1 in morphine-dependent rats, suggesting a compensatory removal of AMPARs from synaptic zones. Together, these findings indicate that chronic morphine increases synaptic availability of GluA1-containing AMPARs in the NAc, which is necessary for triggering negative-affective states in response to naloxone. This is broadly consistent with the hypothesis that activation of NAc neurons produces acute aversive states and raises the possibility that inhibiting AMPA transmission selectively in the NAc may have therapeutic value in the treatment of addiction. SIGNIFICANCE STATEMENT: Morphine dependence and withdrawal result in profound negative-affective states that play a major role in the maintenance of addiction. However, the underlying neurobiological mechanisms are not fully understood. We use a rat model of morphine dependence to show that GluA1 subunits of AMPA glutamate receptors in the nucleus accumbens (NAc), a brain region critical for modulating affective states, are necessary for aversive effects of morphine withdrawal. Using biochemical methods in NAc tissue, we show that morphine dependence increases cell surface expression of GluA1, suggesting that neurons in this area are primed for increased AMPA receptor activation upon withdrawal. This work is important because it suggests that targeting AMPA receptor trafficking and activation could provide novel targets for addiction treatment.

Homicide-suicide, double suicide or homicide followed by suicide 2 case reports.

Cases in which several persons who died from an unnatural cause are found together are often difficult. It is necessary to exclude homicide committed by another person and to clarify whether the deaths are the result of a homicide-suicide or a joint suicide of persons wishing to die. Two cases in which couples with gunshot wounds to the head had been found lifeless in their homes are presented. In both cases, the deceased were of advanced ages and suffered from severe pre-existing diseases. Due to the circumstances at the scene, the results of the investigations and the autopsies as well as the suicide notes found, a double suicide was assumed in both cases. The husbands killed themselves after shooting their wives. Based on the presented cases the so-called double suicide and the need for a thorough investigation of the death scene with the problem of differentiating it from homicide-suicide and double homicide are discussed.

[Morphine (obtained from poppy seeds) and dextrometorfan poisoning­ a case report].

Morphine is one of the many, and pharmacologically most important, opium poppy alkaloid (Papaver somniferum). A poppy plant consists of a lot of alkaloids. Most of them are morphine, codeine, narcotine, papaverine, thebaine, narceine and narcotoline. Most of the alkaloid is in the poppy milk - opium..It is a dried and properly processed juice with precut immature poppy-heads. It induces euphoria, somnolence, has an analgesic effect. In the study was presented a 24-yearold patient who was admitted to the Department of Toxicology and Cardiology because of suspicion of poisoning with unknown drugs. In retrospect, it turned out that he was poisoned brew with 5 kg of poppy and dextromethorphan. In the past, he drank alcohol heavily, used legal highs, amphetamine, methamphetamine, opiates, diazepam, cannabinoids. At the time of admission to the department, his general condition was severe, he was unconscious, with periodic breathing disorders, pinpoint pupils. In the laboratory: opiates>2000 ng/ml, other toxicological tests were negative. On the subsequent days of his stay he remained in a generally very severe condition; he was unconscious. Some electrolyte disorders were observed, as well as characteristics of developing rhabdomyolysis. With the applied intensive medical therapy, a gradual improvement of his general condition was achieved. Due to quadriplegia on the 30th day of the hospitalization, the patient was transferred to the Department of Neurology for further treatment.

[The morphofunctional features of the heart associated with acute morphine poisoning during the period of chronic drug intoxication].

The objective of the present study was to improve forensic medical diagnostics of the cases of death associated with morphine poisoning based on the investigation into the biochemical changes in blood and pericardial fluid as well as morphological changes in the myocardial structures. The studies were carried out with the use of thin-layer chromatography, colorimetric and morphological methods including hematoxylin and eosin, Lee's methylene blue, and van Gieson's picrofuscin staining. These techniques were supplemented by light and polarization microscopy. The study has demonstrated the presence of morphine in 99.16% of the blood and pericardial samples obtained in the cases of poisoning. The comparison of the results of biochemical and pathomorphological studies of the myocardium made it possible to evaluate the functional and morphological conditions of the heart in the case of acute morphine poisoning during the period of chronic drug intoxication.

Six-year follow-up of impact of co-proxamol withdrawal in England and Wales on prescribing and deaths: time-series study.

BACKGROUND: The analgesic co-proxamol (paracetamol/dextropropoxyphene combination) has been widely involved in fatal poisoning. Concerns about its safety/effectiveness profile and widespread use for suicidal poisoning prompted its withdrawal in the UK in 2005, with partial withdrawal between 2005 and 2007, and full withdrawal in 2008. Our objective in this study was to assess the association between co-proxamol withdrawal and prescribing and deaths in England and Wales in 2005-2010 compared with 1998-2004, including estimation of possible substitution effects by other analgesics. METHODS AND FINDINGS: We obtained prescribing data from the NHS Health and Social Care Information Centre (England) and Prescribing Services Partneriaeth Cydwasanaethau GIG Cymru (Wales), and mortality data from the Office for National Statistics. We carried out an interrupted time-series analysis of prescribing and deaths (suicide, open verdicts, accidental poisonings) involving single analgesics. The reduction in prescribing of co-proxamol following its withdrawal in 2005 was accompanied by increases in prescribing of several other analgesics (co-codamol, paracetamol, codeine, co-dydramol, tramadol, oxycodone, and morphine) during 2005-2010 compared with 1998-2004. These changes were associated with major reductions in deaths due to poisoning with co-proxamol receiving verdicts of suicide and undetermined cause of -21 deaths (95% CI -34 to -8) per quarter, equating to approximately 500 fewer suicide deaths (-61%) over the 6 years 2005-2010, and -25 deaths (95% CI -38 to -12) per quarter, equating to 600 fewer deaths (-62%) when accidental poisoning deaths were included. There was little observed change in deaths involving other analgesics, apart from an increase in oxycodone poisonings, but numbers were small. Limitations were that the study was based on deaths involving single drugs alone and changes in deaths involving prescribed morphine could not be assessed. CONCLUSIONS: During the 6 years following the withdrawal of co-proxamol in the UK, there was a major reduction in poisoning deaths involving this drug, without apparent significant increase in deaths involving other analgesics.

Drug overdose deaths--Florida, 2003-2009.

In the United States in 2007, unintentional poisonings were the second leading cause of injury death (after motor-vehicle crashes); approximately 93% of all unintentional poisoning deaths were caused by drug poisoning, also known as drug overdose. From 1990 to 2001 in Florida, the nonsuicidal poisoning death rate increased 325%. To characterize recent trends in drug overdose death rates in Florida, CDC analyzed data from the Florida Medical Examiners Commission. This report summarizes the results of that analysis, which found that, from 2003 to 2009, the number of annual deaths in which medical examiner testing showed lethal concentrations of one or more drugs increased 61.0%, from 1,804 to 2,905, and the death rate increased 47.5%, from 10.6 to 15.7 per 100,000 population. During 2003-2009, death rates increased for all substances except cocaine and heroin. The death rate for prescription drugs increased 84.2%, from 7.3 to 13.4 per 100,000 population. The greatest increase was observed in the death rate from oxycodone (264.6%), followed by alprazolam (233.8%) and methadone (79.2%). By 2009, the number of deaths involving prescription drugs was four times the number involving illicit drugs. These findings indicate the need to strengthen interventions aimed at reducing overdose deaths from prescription drugs in Florida. Medical examiner records are a timely, population-based source for data regarding overdose deaths from specific drugs. The data in this report and subsequent analyses can be used to design and measure the effectiveness of interventions.

Prescription of opioid analgesics and related harms in Australia.

OBJECTIVE: To document trends in: (i) prescribing of morphine and oxycodone; (ii) hospital separations for overdose; (iii) presentations for treatment of problems associated with these drugs; and (iv) oxycodone-related mortality data in Australia. DESIGN AND SETTING: Cross-sectional study analysing prescriptions for morphine and oxycodone based on figures adjusted using Australian Bureau of Statistics estimated resident population and prospectively collected data from: (i) the National Hospital Morbidity Database on hospital separations primarily attributed to poisoning with opioids other than heroin ("other opioids"); (ii) the Alcohol and Other Drug Treatment National Minimum Data Set for treatment episodes where morphine or oxycodone were the primary or other drugs of concern; (iii) the National Coronial Information System on deaths where oxycodone was the underlying cause of death or a contributory factor. MAIN OUTCOME MEASURES: Population-adjusted numbers of (i) prescriptions for morphine and oxycodone by 10-year age group, (ii) hospital separations for "other opioid" poisoning, and (iii) treatment episodes related to morphine or oxycodone; and (iv) number of oxycodone-related deaths. RESULTS: Prescriptions for morphine declined, while those for oxycodone increased. Prescriptions for both were highest among older Australians. Hospital separations for "other opioid" poisoning doubled between the financial years 2005-06 and 2006-07. Treatment episodes for morphine remained stable, while those for oxycodone increased. There were 465 oxycodone-related deaths recorded during 2001-2009. CONCLUSIONS: Oxycodone prescriptions in Australia have increased, particularly among older Australians. The increase may, in part, reflect appropriate prescribing for pain among an ageing population. However we are unable to differentiate non-medical use from appropriate prescribing from this data. In comparison to heroin, the morbidity and mortality associated with oxycodone is relatively low in Australia. There is a continued need for comprehensive training of general practitioners in assessing patients with chronic non-malignant pain and prescribing of opioids for these patients, to minimise the potential for harms associated with use of these medications.

Drug-related death in Denmark in 2007.

INTRODUCTION: We investigated fatal poisonings among drug addicts in 2007. The cause of death, abuse pattern and geographic differences are presented. MATERIAL AND METHODS: All drug-related deaths examined at the three forensic medicine institutes in Denmark in 2007 were evaluated. RESULTS: The number of drug-related deaths in 2007 was 226. Methadone deaths had increased since 1997 while heroin/morphine deaths decreased. In earlier studies, very few deaths from central stimulants like cocaine and amphetamines occurred (1-1.5%), but in 2007 6% of the deaths were caused by these drugs. Multiple drug use was common. Heroin/morphine, cocaine, amphetamine, cannabis, methadone, benzodiazepines and alcohol were included in the poly-drug use. CONCLUSION: This investigation shows stabilization in the number of fatal poisonings in drug addicts. Geographic differences were observed. Methadone was the most frequent cause of fatal poisoning and there was a continuous decrease in heroin/morphine deaths. Fatal deaths from cocaine and amphetamine have increased considerably. Multiple drug use was common. FUNDING: not relevant. TRIAL REGISTRATION: not relevant.

Cardiogenic shock induced by a high dose of intravenous morphine.

Morphine is an opiate alkaloid characterized by various clinical effects, among which the most prominent are its analgesic and psychoactive effects. It also has a prominent depressive effect on the respiratory and cardiovascular system. Because of its psychoactive effect, morphine is very addictive and often used as a recreational narcotic. As a medication, it has found its use as an analgesic agent in chronic pain treatment, in hemorrhagic shock, and in acute heart failure with pulmonary edema. Albeit, morphine use in heart failure is controversial, based on many observational studies showing the negative effect on the outcomes of the patients treated with morphine during acute cardiovascular incidents. In this report, the authors present a case of cardiogenic shock (CS) with transient left ventricular ejection fraction reduction, occurring in a patient attempting suicide using a high dose of intravenous morphine sulphate administration. Other CS causes were ruled out. To the best of the authors' knowledge, this is the second case of a morphine-related CS reported in literature. Int J Occup Med Environ Health. 2021;34(1):133-8.

Drug detection in decomposed cadavers confirms testimonial evidence in a case of serial homicides.

Toxicology investigation on human's buried dead bodies is a rare and challenging task in the forensic field. As requested by the Judicial Authority, this work aimed to verify testimonial evidence that emerged during a criminal investigation involving multiple murder cases. The statements indicated an improper medical administration of one or more alleged drugs (propofol, morphine, diazepam, and midazolam) which presumably caused the deaths. Since the supposed crimes took place several years before, the task of the present work was to obtain results to support the charges. The analyses involved 18 biological samples taken from four exhumed bodies, three of which were female and one male, each buried in a different date and mode. Each sample was treated with specific purification and extraction techniques (LLE - SPE) after the addition of the deuterated analogs of the searched analytes (propofol-d17, morphine-d3, diazepam-d5, midazolam-d4) as internal standards. Afterwards, the extracts were subjected to qualitative analysis by gas chromatography-mass spectrometry-Electron Impact (GC/MS - EI), both in full scan and SIM mode. Propofol, morphine, and diazepam were identified in the corpses. It supports testimonials that were administered just before the deaths occurred.

Trends in hydrocodone combination product exposures reported to California Poison Control System (CPCS) following DEA rescheduling.

CONTEXT: On October 6, 2014, the United States Drug Enforcement Administration (DEA) implemented a regulatory change for hydrocodone combination products (HCPs), moving them from Schedule III to II, in an effort to decrease drug overdoses. Existing research suggests this regulatory action reduced HCP prescribing and dispensing; however, there is limited research assessing its possible effects on overdoses and accidental exposures. OBJECTIVE: To analyze the changes in opioid exposures reported to the California Poison Control System (CPCS) before and after DEA rescheduling of HCPs. METHODS: We collected monthly exposure data reported to CPCS from 2012 to 2019 and conducted interrupted time series analyses to assess changes in exposures after rescheduling for HCPs, tramadol, oxycodone, morphine, codeine, fentanyl, and heroin. Additional analyses were done to assess any changes in exposures resulting in severe outcomes (moderate or major health effects). For HCPs, we also conducted logistic regressions to identify characteristics of exposures resulting in severe outcomes before and after rescheduling. RESULTS: Overall monthly opioid exposures reported to CPCS decreased after DEA rescheduling of HCPs. These decreases were significant for HCP, tramadol, and morphine (p < 0.001). Exposures significantly increased for heroin and fentanyl (p < 0.001). There were no significant changes in the share of severe outcomes attributed to HCP exposures after rescheduling. DISCUSSION: The DEA rescheduling of HCPs was associated with a significant decrease in HCP exposures and prescription opioid exposures overall, but was associated with increased fentanyl and heroin exposures. While other initiatives may have contributed to this decrease, our findings suggest that rescheduling may be a useful regulatory strategy to reduce drug exposures. CONCLUSION: DEA rescheduling of HCPs was associated with a significant reduction in prescription opioid exposures, suggesting that rescheduling high-risk drugs may be an effective strategy to improve public health.

Comparing rates and characteristics of ambulance attendances related to extramedical use of pharmaceutical opioids in Victoria, Australia from 2013 to 2018.

BACKGROUND AND AIMS: Despite increases in opioid prescribing and related morbidity and mortality, few studies have comprehensively documented harms across opioid types. We examined a population-wide indicator of extramedical pharmaceutical opioid-related harm to determine if the supply-adjusted rates of ambulance presentations, the severity of presentations or other attendance characteristics differed by opioid type. DESIGN: Retrospective observational study of coded ambulance patient care records related to extramedical pharmaceutical opioid use, January 2013 to September 2018. SETTING: Australia CASES: Primary analyses used Victorian data (n = 9823), with available data from other Australian jurisdictions (n = 4338) used to determine generalizability. MEASUREMENTS: We calculated supply-adjusted rates of attendances using Poisson regression, and used multinomial logistic regression to compare demographic, presentation severity, mental health, substance use and other characteristics of attendances associated with seven pharmaceutical opioids. FINDINGS: In Victoria, the highest rates of attendance [per 100 000 oral morphine equivalent mg (OME)] were for codeine (0.273/100 000) and oxycodone (0.113/100 000). The lowest rates were for fentanyl (0.019/100 000) and tapentadol (0.005/100 000). Oxycodone-naloxone rates (0.031/100 000) were lower than for oxycodone as a single ingredient (0.113/100 000). Fentanyl-related attendances were associated with the most severe characteristics, most likely to be an accidental overdose, most likely to have naloxone administered and least likely to be transferred to hospital. In contrast, codeine-related attendances were more likely to involve suicidal thoughts/behaviours, younger females and be transported to hospital. Supply-adjusted attendance rates for individual opioids were stable over time. Victorian states were broadly consistent with non-Victorian states. CONCLUSIONS: In Australia, rates and characteristics of opioid-related harm vary by opioid type. Supply-adjusted ambulance attendance rates appear to be both stable over time and unaffected by large changes in supply.

The impact of the prescription opioid epidemic on young children: Trends and mortality.

BACKGROUND: Our objective was to describe trends and deaths in young children associated with opioid analgesics. METHODS: Analysis of pediatric exposures using the RADARS System Poison Center Program from July 1, 2010 through December 31, 2018. Cases involving a child < 6 years, with an exposure to one or more opioids: buprenorphine, fentanyl, hydrocodone, hydromorphone, methadone, morphine, oxycodone, oxymorphone, and tramadol. Poisson regression was used to model the shape of the time response curve. RESULTS: 48,560 cases were identified, median age 2 years (IQR 1.4, 2.0), 52.4 % male. The most commonly involved opioid was hydrocodone (32.5 %); buprenorphine and methadone had the highest exposure rates when adjusted for dispensed prescriptions (0.84 and 0.73 per 10,000 prescriptions). There were 28 deaths, methadone being the most commonly involved opioid (16). Exposures decreased significantly accounting for population (from 8.39 to 4.19 exposures per 100,000 children) and per prescription (from 0.33 to 0.25 exposures per 10,000 prescriptions). After adjustment for prescriptions, the exposure rate for hydromorphone and fentanyl increased over the study period, while buprenorphine had the greatest decrease in exposure rate. Among 28 deaths, 11 (39 %) were known or suspected to have been exposed, but medical care was not sought or was delayed. CONCLUSION: Pediatric opioid exposure rates by prescription and population decreased from July 2010 through December 2018. However, with over 48,000 exposures and 28 deaths, the opioid epidemic continues to impact young children. Many exposures including deaths were preventable. Continued improvements in prevention require a multifaceted approach.

The underrecognized toll of prescription opioid abuse on young children.

STUDY OBJECTIVE: The impact of prescription opioid abuse on young children is underrecognized and poorly documented. We hypothesize that poisoning of young children from prescription opioids occurs regularly in the United States and is associated with serious health events, including death. METHODS: Using data from poison centers participating in the Researched Abuse, Diversion and Addiction-Related Surveillance (RADARS) System, exposures in children younger than 6 years, involving buprenorphine, fentanyl, hydrocodone, hydromorphone, methadone, morphine, and oxycodone (January 2003 to June 2006), were quantified and described. RESULTS: We identified 9,179 children exposed to a prescription opioid. The median age was 2.0 years (range newborn to 5.5 years), and 54% were boys. Nearly all exposures involved ingestion (99%) and occurred in the home (92%). Exposures to any opioid were associated with 8 deaths, 43 major effects, and 214 moderate effects. Of 51 patients who experienced a major effect or death, 35 were treated with naloxone: a beneficial response was documented in 34 patients. All 5 exposures to buprenorphine associated with a major effect were treated with naloxone, and a beneficial response was recorded in all 5. Nearly all exposures were to medications prescribed for adults in the household. The number of prescriptions filled for an opioid in an area correlated well with exposures in young children in the same area; children have access to household members' prescription drugs. CONCLUSION: Young children are exposed to prescription opioids, typically prescribed for other patients, resulting in major health effects and death.

The relationship between antemortem and postmortem morphine concentrations.

Context of the Article: An important forensic problem is whether the presence of a drug such as morphine caused or contributed to a death or was merely incidental. The reliance that can be based on postmortem drug concentrations remains controversial. To investigate this further we obtained antemortem and postmortem samples of individuals admitted to hospital who were receiving morphine and who died in hospital.Methods: Eleven subjects were recruited. Samples were sent for analysis for free and total morphine concentrations.Results: The median difference (postmortem - antemortem) free morphine concentration was 25.5 (range 0 to +126) µg/L, p < .01; the mean difference between postmortem and antemortem total morphine concentration was 34.5 (range -225 to 342) µg/L (not significant).Discussion: Our study supports previous investigators who note that there is an inconstant and sometimes tenuous relationship between ante- and postmortem morphine concentrations.

An analysis of issues in the classification and reporting of heroin-related deaths.

AIMS: To investigate the extent of variability in the reporting of heroin-related deaths in Victoria, Australia. Additionally, to identify opportunities to improve the accuracy and consistency of heroin-related death reporting by examining variability in the attribution, death certification, classification and coding of heroin-related death cases. METHODS: Heroin-related deaths in Victoria, Australia during a 2-year period (2012-13) were identified using the National Coronial Information System (NCIS) and used as the 'gold standard' measure in this study. Heroin-related death data from the Australian Institute of Health and Welfare (AIHW) and Australian Bureau of Statistics (ABS) were then compared. Differences in the number of deaths reported as well as the classification and coding assigned to the identified heroin-related death cases were investigated by cross-referencing these data sets and examining the assigned ICD-10 codes. RESULTS: A total of 243 heroin-related deaths were identified through the NCIS compared with 165 heroin-related deaths reported by the AIHW and assigned the heroin-specific ICD-10 code of T40.1. Forty per cent of all the missed heroin-related death cases resulted from either the attribution of the death to morphine toxicity or with non-specific drug toxicity certification; 30% occurred where the cases had been attributed to heroin but there were irregularities in death certification. Additional missed heroin-related death cases occurred as a result of late initial registration of these deaths to the Registry of Births, Deaths and Marriages, and where these cases were then not assessed by the ABS for classification and coding purposes. CONCLUSIONS: In Victoria, Australia, in 2012 and 2013, the overall number of heroin-related deaths was under-reported by 32% compared with the number of deaths currently identified by the Australian Bureau of Statistics and reported by the Australian Institute of Health and Welfare.

Deaths by poisoning in New Zealand, 2008-2013.

Introduction: While a number of developed countries have witnessed a decline in carbon monoxide (CO) deaths and increasing numbers of opioid-related fatalities, it is not known whether these or other trends have occurred in New Zealand. The aim of this study was, therefore, to review deaths due to poisoning in New Zealand, describe the causative substances, and identify any trends. Methods: Retrospective study reviewing New Zealand's poison-related death findings recorded in the National Coronial Information System (NCIS) database over the 6-year period 2008-2013. Results: We identified 1402 poisoning-related deaths recorded in the NCIS database representing a mortality rate of 5.4 deaths/100,000 population per year. The mortality rate due to poisoning was higher in males (6.96/100,000) than females (3.83/100,000). Fatalities peaked in the 40-50-year age group with the highest proportion of intentional deaths occurring in people aged 80-90 years. Pharmaceuticals accounted for 731 fatalities (52%) and chemicals 431 (31%), with multiple exposures occurring in 399 cases (28.5%). While CO was the leading cause of death throughout the period (n = 303, 21.6%), there was a significant reduction in the rate of CO fatalities from 1.69/100,000 population in 2008 to 0.94/100,000 in 2013 (IRR (95% CI) 2013/2008 0.56 (0.37-0.83)). There was, however, no statistically significant change in either the opioid-related death rate or the total number of deaths. Methadone was the leading pharmaceutical cause of fatality and the third most common cause overall, followed by morphine and codeine, with zopiclone and clozapine equally ranked as the sixth most common cause. Conclusion: While New Zealand has not suffered an "opioid epidemic" and has experienced a significant decline in CO deaths, the overall death rate due to poisoning has remained high. The development of accessible, timely, and relevant toxicovigilance systems would support the early implementation of interventions to reduce the leading causes of fatal poisoning.

The epidemiologic association between opioid prescribing, non-medical use, and emergency department visits.

INTRODUCTION: Since the 1990s prescriptions for and the non-medical use of opioids have increased. This study examines associations between opioid prescribing, non-medical use, and emergency department (ED) visits. METHODS: Data were abstracted from four federally sponsored, nationally representative, annual surveys (National Hospital Ambulatory Medical Care Survey, National Ambulatory Medical Care Survey, National Survey on Drug Use and Health, and Drug Abuse Warning Network). RESULTS: For hydrocodone and oxycodone, associations between prescribing and non-medical use, and prescribing and ED visits were statistically significant (p-values < 0.04) and strongly associated (correlation coefficient range 0.73 to 0.87). Male gender, White race, and age > or = 35 were all statistically significant (p-values < 0.0001) predictors of receiving a hydrocodone or oxycodone-containing prescription. CONCLUSION: The increased number of prescriptions written for hydrocodone and oxycodone between 1995 and 2004 was associated with similar increases in non-medical use and the number of ED visits during this time period.