Dataset Information

Pralidoxime in acute organophosphorus insecticide poisoning--a randomised controlled trial.

ABSTRACT:

Background

Poisoning with organophosphorus (OP) insecticides is a major global public health problem, causing an estimated 200,000 deaths each year. Although the World Health Organization recommends use of pralidoxime, this antidote's effectiveness remains unclear. We aimed to determine whether the addition of pralidoxime chloride to atropine and supportive care offers benefit.

Methods and findings

We performed a double-blind randomised placebo-controlled trial of pralidoxime chloride (2 g loading dose over 20 min, followed by a constant infusion of 0.5 g/h for up to 7 d) versus saline in patients with organophosphorus insecticide self-poisoning. Mortality was the primary outcome; secondary outcomes included intubation, duration of intubation, and time to death. We measured baseline markers of exposure and pharmacodynamic markers of response to aid interpretation of clinical outcomes. Two hundred thirty-five patients were randomised to receive pralidoxime (121) or saline placebo (114). Pralidoxime produced substantial and moderate red cell acetylcholinesterase reactivation in patients poisoned by diethyl and dimethyl compounds, respectively. Mortality was nonsignificantly higher in patients receiving pralidoxime: 30/121 (24.8%) receiving pralidoxime died, compared with 18/114 (15.8%) receiving placebo (adjusted hazard ratio [HR] 1.69, 95% confidence interval [CI] 0.88-3.26, p = 0.12). Incorporating the baseline amount of acetylcholinesterase already aged and plasma OP concentration into the analysis increased the HR for patients receiving pralidoxime compared to placebo, further decreasing the likelihood that pralidoxime is beneficial. The need for intubation was similar in both groups (pralidoxime 26/121 [21.5%], placebo 24/114 [21.1%], adjusted HR 1.27 [95% CI 0.71-2.29]). To reduce confounding due to ingestion of different insecticides, we further analysed patients with confirmed chlorpyrifos or dimethoate poisoning alone, finding no evidence of benefit.

Conclusions

Despite clear reactivation of red cell acetylcholinesterase in diethyl organophosphorus pesticide poisoned patients, we found no evidence that this regimen improves survival or reduces need for intubation in patients with organophosphorus insecticide poisoning. The reason for this failure to benefit patients was not apparent. Further studies of different dose regimens or different oximes are required.

SUBMITTER: Eddleston M

PROVIDER: S-EPMC2696321 | biostudies-literature | 2009 Jun

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Pralidoxime in acute organophosphorus insecticide poisoning--a randomised controlled trial.

Eddleston Michael M Eyer Peter P Worek Franz F Juszczak Edmund E Alder Nicola N Mohamed Fahim F Senarathna Lalith L Hittarage Ariyasena A Azher Shifa S Jeganathan K K Jayamanne Shaluka S von Meyer Ludwig L Dawson Andrew H AH Sheriff Mohamed Hussain Rezvi MH Buckley Nick A NA

PLoS medicine 20090630 6

<h4>Background</h4>Poisoning with organophosphorus (OP) insecticides is a major global public health problem, causing an estimated 200,000 deaths each year. Although the World Health Organization recommends use of pralidoxime, this antidote's effectiveness remains unclear. We aimed to determine whether the addition of pralidoxime chloride to atropine and supportive care offers benefit.<h4>Methods and findings</h4>We performed a double-blind randomised placebo-controlled trial of pralidoxime chlo ...[more]

PMID: 19564902

Similar Datasets

Project description:BackgroundDespite the apparent benefits of organophosphate compounds (OPCs) acute organophosphate (OP) pesticide poison is an increasing problem worldwide. In a country like Ethiopia, where agriculture is a major component of the economy, these compounds are readily available to the general public. There is paucity of evidence from Ethiopia showing the pattern of organophosphate poisoning (OPP) in healthcare facilities. The objective of this study was to evaluate retrospectively the pattern of acute OPP at the University of Gondar Teaching Hospital in northwest Ethiopia, during September 2010 through December 2014 was conducted. Data was collected through chart review of patients who were admitted due to poisoning. Data was analysed using SPSS 20.ResultsOrganophosphate poisoning in University of Gondar teaching hospital accounts for about 38.46% of all emergency room admissions for poisoning. Out of the 90 cases studied 60% (54) were women, with male to female ratio of 1:1.5. The mean age of the patients was 25.5 with a standard deviation of 9.45. 56.7% of the cases studies lived in an urban environment compared to 43.3% who lived rurally. In the vast majority of patients, 90% (81) patients had ingested OP as an act of suicide. Regarding the route of exposure, oral ingestion was most common in suicidal cases (88.9%). The elapsed time between the time of poison ingestion and the start of the treatment, ranged from 13 min to 1 day. Health care professionals' useds decontamination methods such as gastric lavage and activated charcoal (45.6%) and 36.7% use atropine for OPP treatment. The mean hospital stay was 0.74 days. In the present study family problems were a leading cause of suicides and accounted for 45.8% of all cases.ConclusionAs a developing nation who economy relies heavily on agriculture, Ethiopia continues to have OP compounds remain a common cause of acute poisonings. This is particularly concerning for younger generation who have high rates of OPP and whose numbers continue to raise. This data suggests that it is essential to strengthen Ethiopians regulatory policy concerning the availability of OPCs. Additionally, it will be important to design an appropriate health education program for the prevention of both suicidal and accidental OPPs for the benefit of the public at large.

Project description:General Practitioners (GPs) play an important role in the follow-up of patients after deliberate self-poisoning (DSP). The aim was to examine whether structured follow-up by GPs increased the content of, adherence to, and satisfaction with treatment after discharge from emergency departments.This was a multicentre, randomised trial with blinded assignment. Five emergency departments and general practices in the catchment area participated. 202 patients discharged from emergency departments after DSP were assigned. The intervention was structured follow-up by the GP over a 6-month period with a minimum of five consultations, accompanied by written guidelines for the GPs with suggestions for motivating patients to follow treatment, assessing personal problems and suicidal ideation, and availability in the case of suicidal crisis. Outcome measures were data retrieved from the Register for the control and payment of reimbursements to health service providers (KUHR) and by questionnaires mailed to patients and GPs. After 3 and 6 months, the frequency and content of GP contact, and adherence to GP consultations and treatment in general were registered. Satisfaction with general treatment received and with the GP was measured by the EUROPEP scale.Patients in the intervention group received significantly more consultations than the control group (mean 6.7 vs. 4.5 (p = 0.004)). The intervention group was significantly more satisfied with the time their GP took to listen to their personal problems (93.1% vs. 59.4% (p = 0.002)) and with the fact that the GP included them in medical decisions (87.5% vs. 54. 8% (p = 0.009)). The intervention group was significantly more satisfied with the treatment in general than the control group (79% vs. 51% (p = 0.026)).Guidelines and structured, enhanced follow-up by the GP after the discharge of the DSP patient increased the number of consultations and satisfaction with aftercare in general practice. Consistently with previous research, there is still a need for interventional studies.ClinicalTrials.gov Identifier: NCT01342809. Registered 18 April 2011.

Dataset Information

Pralidoxime in acute organophosphorus insecticide poisoning--a randomised controlled trial.

Background

Methods and findings

Conclusions

Publications

Pralidoxime in acute organophosphorus insecticide poisoning--a randomised controlled trial.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets