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Methodological issues in the surveillance of poisoning, illicit drug overdose, and heroin overdose deaths in new Mexico.

New Mexico leads the nation in poisoning mortality, which has increased during the 1990s in New Mexico and the United States. Most of this increase has been due to unintentional deaths from illicit drug overdoses. Medical examiner and/or vital statistics data have been used to track poisoning deaths. In this study, the authors linked medical examiner and vital statistics records on underlying cause of death, coded using the International Classification of Diseases, Ninth Revision, to assess the extent to which these data sources agreed with respect to poisoning deaths. The authors used multiple-cause files, which are files with several causes listed for each death, to further assess poisoning deaths involving more than one drug. Using vital statistics or medical examiner records, 94.7% of poisoning deaths were captured by each source alone. For unintentional illicit drug and heroin overdose deaths, each data source alone captured smaller percentages of deaths. Deaths coded as E858.8 (unintentional poisoning due to other drugs) require linkage with medical examiner or multiple-cause records, because this code identifies a significant percentage of illicit drug overdose deaths but obscures the specific drug(s) involved. Surveillance of poisoning death should include the use of medical examiner records and underlying- and multiple-cause vital statistics records.

Adult↗

[Efficacy and safety of gut decontamination in patients with acute therapeutic drug overdose].

BACKGROUND AND OBJECTIVE: Gut decontamination (GD) may be used as a treatment for acute therapeutic drug overdose (ATDO) to reduce the absorption of the drug and thereby avoid the presence or worsening of signs and symptoms of intoxication. The objective of this study was to assess the efficacy and safety of GD in ATDO patients. PATIENTS AND METHOD: A 4-month prospective observational study was designed to include all patients admitted to the emergency department due to an ATDO. On admission, epidemiological data, vital signs and physical examination results were all recorded and a blood sample was taken for toxicological analysis. An algorithm was used to determine the GD method to be applied. A clinical reassessment was made at 3-6 hours and a further sample was taken for toxicological analysis. Patients were followed until hospital discharge, with all possible adverse events due to GD being recorded. RESULTS: Ninety-four patients were included. GD was indicated in 60 patients (63.8%): 3.3% received ipecacuana syrup, 8.3% gastric lavage, 21.6% gastric lavage followed by activated charcoal and 71.6% oral activated charcoal alone. The clinical state worsened in 19.1% of patients, usually on the basis of a diminished consciousness. Adverse events attributable to GD were observed in 8.3% of patients. A toxicological analysis was made in 50 patients and in 42% of them, drug concentrations were higher at 3 or 6 hours than on admission. An analysis of the method of decontamination used showed that the procedure recommended by the algorithm was applied in 70 patients (group A) while in the remaining 24 (group B) another decontamination technique was used. Clinical deterioration was seen in 14.3% of patients in group A and 33.3% in group B (p = 0.041). There was a favourable evolution of the analytic curve in 63.9% patients in group A and 42.9% in group B (p = NS); severe adverse events attributable to GD were suffered by 2.4% patients in group A and 11.1% in group B (p = NS). CONCLUSIONS: The efficacy and safety of GD in ATDO increases in patients in whom the decision-making algorithm is applied. However, this does not prevent clinical deterioration or continued drug absorption in all cases and may be accompanied by adverse events.

Adult↗

Attempted suicide by drug overdose and by poison-ingestion methods seen at the main general hospital in the Fiji islands: a comparative study.

OBJECTIVE: This study examined the prevalence and the characteristics of deliberate self-poisoning patients seen at the main general hospital in the Fiji Islands. METHOD: Thirty-one consecutive patients with deliberate drug-overdose and 27 others with nonoverdosed self-poisoning were compared on sociodemographic and clinical variables. RESULTS: Deliberate self-poisoning cases represented 0.3% of the hospital admissions, and had a rate of 25.9 per 100,000 population. The overdose group was significantly older (P<.05), whereas the poison-ingestion group had significantly greater proportion of males (P<.03). The rate of psychiatric morbidity was significantly higher in the overdose group (P=.04), whereas the history of alcohol abuse was significantly higher in the other group (P=.04). Paracetamol (35.5%) and paraquat (29.7%) were the most commonly used agents. CONCLUSIONS: Age, gender, rate of psychiatric morbidity, or history of alcohol abuse could be predictive of whether drug overdose or poison ingestion would be used for deliberate self-poisoning. This information could be relevant in the formulation of suicide preventive strategies.

Acetaminophen↗

Aromatic-aromatic interaction of amitriptyline: implication of overdosed drug detoxification.

The objectives of this work are to explore the pi-pi complexation of amitriptyline with pi electron-deficient aromatic rings and demonstrate the feasibility of pi-pi complexation for overdosed drug detoxification. Water-soluble oligochitosan was chemically modified with dinitrobenzenesulfonyl groups to induce selective binding toward amitriptyline through pi-pi complexation. NMR studies showed that benzenesulfonyl and dinitrobenzenesulfonyl protons were upfield shifted by the addition of amitriptyline, indicating the formation of pi-pi complexes. The pi-pi complexation of amitriptyline is driven primarily by a desolvation driving force, whereas the magnitude of interaction is dictated by the complementrary electrostatic interaction. Isolated rat heart tests revealed that dinitrobenzenesulfonyl oligochitosan prevented the amitriptyline-induced cardiotoxicity and was itself not cardiotoxic.

Adsorption↗

Cardiac drug overdose.

Toxicity from cardiac drugs is a particular management challenge since the manifestations of an acute overdose and the initial indications for the drug are often similar. Plasma drug levels are essential but must be interpreted in light of the clinical picture. Hypotension, due to either vasodilatation or decreased myocardial contractility, and arrhythmias are the principal cardiac manifestations, but noncardiac effects are sometimes more troublesome. An antiarrhythmic agent of the same class should not be used in treating an arrhythmia resulting from an overdose.

Arrhythmias, Cardiac↗

Clinical management of cytotoxic drug overdose.

In this article the pharmacological management of accidental drug overdose is discussed, with various treatments for overdose proposed, as supported by clinical facts and speculation. Current knowledge is outlined concerning dacarbazine, nitrosourea compounds, melphalan, procarbazine, cyclophosphamide, VP-16.213, l-asparaginase (colaspase), 6-mercaptopurine, mustine (nitrogen mustard), intravenous or intrathecal methotrexate (amethopterin), cytarabine (cytosine arabinoside), fluorouracil and bleomycin.

Antineoplastic Agents↗

Pharmacist liability for suicide by drug overdose.

Conditions that affect pharmacist liability for suicide by drug overdose are discussed. Traditionally, courts have refused to find liability on the part of a pharmacist who negligently dispenses medication to a patient who then commits suicide with the medication. The rationale has been that the act of suicide is not reasonably foreseeable to the pharmacist, and therefore it is an independent intervening act that breaks the chain of causation between the pharmacist's negligent act and the death of the patient. This legal precedent was followed in a recent case involving hospital pharmacists in Dallas, Texas. Analysis of the facts in the Dallas case shows that the pharmacists could reasonably have foreseen the patient's suicide, and the court's reliance on precedent might have been misplaced. This case and review exemplifies a pharmacolegal situation in which practitioners cannot strictly rely on reported case law to guide their actions. Pharmacies should develop policies and procedures to prevent patients from accumulating medications with which suicide can be consummated.

Humans↗

Drug "overdoses" among U.S. soldiers in Europe, 1978-1979. II. autopsies following deaths and near-deaths.

On-site investigations involving interviews with spouses, friends, coworkers, supervisors, and commanders were conducted following 37 deaths or near-deaths by drug overdose among U.S. soldiers stationed in Europe. Subjects were all active-duty soldiers put on the seriously ill list at any Army hospital with an initial diagnosis which included suspected drug overdose. Victims were typically single Black males, less than 22, high school graduates in excellent health. They had been in Germany 7-24 months, liked their jobs, and were judged better than average workers by both peers and supervisors. Fifty percent played on a unit sports team, 6 of 10 had German girlfriends, and one-third had prior disciplinary problems. Although nearly half had been previously identified as having a drug or alcohol problem, only two or three could be called addicts in even the broadest sense. Six cases were suicide gestures, and only these six cases did not involve heroin and/or alcohol. The modal case followed a party, with substantial drinking. In only 25% of the cases did the victim collapse upon injection. More often he went to bed, vomited during the night, and choked on or inhaled vomitus. The data suggest reexamination of two common myths: that heroin users comprise a very unique, albeit undesirable, sample of the general population; and that "overdose" deaths are the result of ignorance, incompetence, or indifference.

Adult↗

Drug overdoses requiring temporary cardiac pacing; a study of six cases treated at Altnagelvin Hospital, Londonderry.

Drug overdoses in general are increasing and overdoses of cardiac medications are also increasing; some are associated with a high mortality. Temporary cardiac pacing has a valuable role in cases of hypotension related to dysrhythmia, or when it is necessary to provide overdrive pacing. However, despite technically successful and uncomplicated pacemaker insertion and restoration of cardiac electrical activity, patients developing bradyarrhythmia and hypotension after an overdose are in a high risk group.

Adolescent↗

Potential tenfold drug overdoses on a neonatal unit.

Nearly one third of intravenous drug prescriptions on a neonatal unit were for doses less than one tenth of a single drug vial. Tenfold drug errors in prescribing are well documented and with the continued use of vials containing adult size doses, great potential exists for serious administration errors.

Drug Overdose↗

Severe drug overdose: results of treatment.

The incidence and management of severe drug overdose patients over a five-year period is presented, together with results and complications. Emphasis is placed on the importance of conservative measures with minimal need for more aggressive methods of treatment.

Adult↗

Prognostic impact of psychoactive substances use during hospitalization for intentional drug overdose.

OBJECTIVE: To assess whether current use of psychoactive substance(s) is a prognostic factor during hospitalization for intentional drug overdose (IDO). METHOD: Current intoxication with psychoactive substance(s) [cannabis, opiate, buprenorphine, amphetamine/ecstasy, cocaine, lysergic acid diethylamide (LSD)] was identified using toxicological urinalysis in 671 patients with IDO. An IDO was a priori defined as serious if associated with one of the following events: death, hospitalization in intensive care unit longer than 48 h, respiratory support, use of vasopressive drugs, cardiac massage or dialysis. RESULTS: Subjects positive for toxicological assays were twice as likely to present with serious IDO (OR = 1.9, 95% CI: 1.3-2.8, P = 0.001), independently from a large range of confounding factors. The risk of serious IDO was especially marked in subjects using LSD, buprenorphine or opiates. CONCLUSION: Systematic investigation of substance use could be important to adapt medical management of subjects with IDO in general hospital, but also in primary care and psychiatric settings.

Adult↗

Calcium channel blocking drug overdose: an Australian series.

1. A descriptive case study of calcium channel-blocking drug (CCB) overdoses in the Hunter Region of NSW was performed to analyse the in-hospital morbidity and mortality of CCB drug overdoses in an Australian population. 2. The patients were admitted to major hospitals within the Hunter Region and treated initially with gastrointestinal decontamination, including the use of oral activated charcoal. Further management was required in most cases and included intravenous calcium, atropine and inotropic support. 3. Of the 15 CCB overdoses, four patients died. Noncardiogenic pulmonary oedema occurred in two other cases. Cardiac conduction defects occurred in 11 cases. 4. Atropine was found to be effective only after intravenous calcium had been administered. 5. Overdose with slow-release verapamil required prolonged treatment with intravenous calcium salts. 6. Overdose with verapamil or diltiazem in doses greater than 300 mg carries a significant risk of death and potentially life threatening arrhythmias occur with lower doses. 7. Recommended initial management includes early, effective gastrointestinal decontamination. High dose intravenous calcium salts should be given to reverse hypotension and bradycardia. Atropine and inotropic support are frequently required.

Adolescent↗

Post-extubation pulmonary function tests in detection of upper airway obstruction in drug-overdosed patients.

A relatively high percentage of hypnotic-sedative drug-overdosed (HSDO) patients suffer post-extubation upper airway obstruction. Since early detection and treatment of these lesions is desirable, we studied 20 recently extubated (within 24 hours) as well as 11 non-intubated HSDO patients employing flow-volume loops and spirometry. Abnormalities in tests for upper airway obstruction were common in both groups but only in the four post-extubation patients with clinically suspected upper airway obstruction was an inspiratory plateau by flow volume loops found. In addition, three of these four patients had mid-VC ratios greater than 1.25. We conclude that the Inspiratory flow volume loop and the mid-VC ratio may help in detecting post-extubation upper airway obstruction in lethargic, HSDO patients.

Adult↗

Three fatal drug overdoses involving bupropion.

Bupropion is a "second generation" antidepressant agent structurally related to the phenethylamines. Postmortem toxicology data are presented from three suicidal drug overdoses in which bupropion was detected. In two cases in which bupropion was the major toxicology finding, peripheral blood levels of the parent drug were 4.0 and 4.2 mg/L and total metabolite levels were 15 and 16.6 mg/L. Lethal doses in both cases were estimated by history to be less than 10 g.

Adolescent↗

The effect of a reduction in heroin supply on fatal and non-fatal drug overdoses in New South Wales, Australia.

OBJECTIVE: To examine the impact of a sudden and dramatic decrease in heroin availability, concomitant with increases in price and decreases in purity, on fatal and non-fatal drug overdoses in New South Wales, Australia. DESIGN AND SETTING: Time-series analysis was conducted where possible on data on overdoses collected from NSW hospital emergency departments, the NSW Ambulance Service, and all suspected drug-related deaths referred to the NSW Coroner's court. MAIN OUTCOME MEASURES: The number of suspected drug-related deaths where heroin and other drugs were mentioned; ambulance calls to suspected opioid overdoses; and emergency department admissions for overdoses on heroin and other drugs. RESULTS: Both fatal and non-fatal heroin overdoses decreased significantly after heroin supply reduced; the reductions were greater among younger age groups than older age groups. There were no clear increases in non-fatal overdoses with cocaine, methamphetamines or benzodiazepines recorded at hospital emergency departments after the reduction in heroin supply. Data on drug-related deaths suggested that heroin use was the predominant driver of drug-related deaths in NSW, and that when heroin supply was reduced overdose deaths were more likely to involve a wider combination of drugs. CONCLUSION: A reduction in heroin supply reduced heroin-related deaths, and did not result in a concomitant increase, to the same degree, in deaths relating to other drugs. Younger people were more affected by the reduction in supply.

Adolescent↗

Deaths from drug overdose and toxicity in Turkey: 1997-2001.

Turkey is located on the main overland connection between Asia and Europe, making the country potentially vulnerable to drug trafficking and its associated harms. The aim of the present study is to explore the frequency of all deaths from drug overdose and toxicity in Turkey and to describe some of the characteristics of these deaths. We collected data on all deaths from drugs in Turkey between 1997 and 2001 using records from the Council of Forensic Medicine. Data obtained from autopsy reports were retrospectively analyzed. In the present study, 374 deaths from drugs were reported in Turkey, with a mortality rate of 0.17 per 100,000 population. Highest mortality rates were found in Istanbul (0.83) and Gaziantep (0.71). The mean age was 34.0, and most cases (71.7%) were below the age of 40. The proportion of female cases was 13.6%. Opiates were implicated in 91.5% of deaths and benzodiazepines in 25.9%. Two fifths (38.8%) of the cases involved use of more than 1 drug. In 36.6% of cases, the route of final drug administration was by injection. The most common location of death was at a home (33.7%). Interventions to reduce drug use nationally are urgently required. International cooperation in social-educational activities, scientific research, and security measures is essential for this war.

Adolescent↗