Evidence map›Paper›PMID 29531415›Full record

Observational studyBulletin of the World Health Organization2018

Lead poisoning outbreak among opium users in the Islamic Republic of Iran, 2016-2017.

Talat Ghane, Nasim Zamani, Hossein Hassanian-Moghaddam, Ali Beyrami, Alireza Noroozi

Abstract readObservational Study
In one paragraph

Observational study in Bulletin of the World Health Organization, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Talat GhaneDrug and Poison Information Centre, Food and Drug Administration of the Islamic Republic of Iran, Tehran, Iran.
Nasim ZamaniSocial Determinants of Health Research Center, Shahid Beheshti University of Medical Sciences, Teheran, Islamic Republic of Iran.
Hossein Hassanian-MoghaddamDepartment of Clinical Toxicology, School of Medicine, Shahid Beheshti University of Medical Sciences, Arabi Ave, Daneshjoo Blvd, Velenjak, Tehran 19839-63113, Islamic Republic of Iran.
Ali BeyramiOffice of Narcotics and Controlled Substances, Food and Drug Administration of the Islamic Republic of Iran, Tehran, Islamic Republic of Iran.
Alireza NorooziIranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo describe an outbreak of lead poisoning among opium users in the Islamic Republic of Iran and estimate the number of affected people in the country.

methodsWe used data from the country's largest poison treatment centre to illustrate the epidemiology of an outbreak of lead poisoning in oral opium users. We describe the government's referral and treatment guidelines in response to the outbreak. Based on the number of individuals treated and previous studies on the prevalence of oral opium use we estimated the total number of people at risk of lead-contaminated opium nationwide.

findingsIn February 2016, we noticed a steep increase in the numbers of oral opium users referred to our poison treatment centre with abdominal pain, anaemia and constipation. Numbers peaked in June 2016 but the outbreak was ongoing in August 2017. The mean blood lead level in a sample of 80 patients was 140.3 µg/dL (standard deviation: 122.6). Analysis of an illegal opium sample showed 3.55 mg lead in 1 g opium. Treatment was exposure reduction with opioid substitutes and laxatives, or chelation therapy if indicated. Over 7 months, 4294 poison cases were seen at main referral hospitals in Tehran out of an estimated 31 914 oral opium users in the city. We estimate more than 260 000 out of 773 800 users nationwide remain untreated and at risk of poisoning.

conclusionLead-contaminated opium and heroin that has transited through the Iranian markets is a global risk and highlights a need for better monitoring of illegal drug supplies.

Indexed as

AdultDisease OutbreaksDrug UsersHumansIranLeadLead PoisoningOpioid-Related DisordersOpiumLeadOpium

Identifiers

PMID29531415
PMCPMC5840624

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.