BackgroundSuicide ranks among the top ten causes of death in all age groups all over the world. There are many methods for committing suicide including self-poisoning, firearm and hanging. The aim of the present study was to provide an overview of self-poisoning related suicidal deaths with special focus on forensic toxicology analysis results in Tehran, Iran from 2011 to 2015.MethodsAll suspicious cases with the the history of self-poisoning were investigated to define the cause and manner of death under the supervision of forensic medicine practitioners. Postmortem samples were analysed in forensic toxicology laboratory to confirm the presence of drugs in cadaver of suicidal cases. Drugs and poisons were analysed using thin layer chromatography, high performance liquid chromatography, gas chromatography/mass spectrometry, headspace gas chromatography and gas chromatography equipped with nitrogen phosphorus detector. Demographic data were collected from autopsy reports of all cases with confirmed self-poisoning suicidal cause of death.ResultsResults showed that 674 cases of self-poisoning deaths were investigated during a five-year study period, of which 68.55% were male. The most often used suicide method was self-poisoning in young population. Phosphine gas liberated from aluminum phosphide tablets was the most toxic substance detected in postmortem samples (619 cases) followed by opioids, methamphetamine, organophosphates, cyanide and strychnine.ConclusionIn conclusion self-poisoning suicidal death was predominant in young male population in Tehran, Iran. It seems that free access to suicide means such as drugs and poisons should be restricted by national and health authorities.Trial registrationNot applicable.

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This study aimed at describing demographic information of the deceased resulting from hanging by means of different methods of suicide. In this cross-sectional study, the file of suicide cases referred to the Central Legal Medicine Organization was investigated retrospectively. Of 1681 suicide cases, the highest suicide mode was hanging by 993 cases (57.4%) and intoxication by 674 cases (39%). The mean age of hanging was 36.22±15.76 and for other suicide methods it was 32.61±13.70 (P=0.000). Hanging was higher in males. Female victims used other methods like intoxication (P=0.000). The most common seasons for hanging were spring and winter. Toxicological analysis in cases of hanging was positive with opioid alkaloids in 95 cases (9/9%) and methamphetamine in 68 cases (7%). Intoxication with aluminum phosphide was in 35.8% of cases. Most of the cases (68.3%) were self-employed victims. A total of 534 (63%) cases were married. There was a statistically significant difference between hanging and other suicide modes concerning age, gender, occupation, marital status, and drug abuse history (P<0.001). The frequency of hanging was higher in males, marrieds, self-employed, unemployed and drug abusers. Students were victims of intoxication. Self-employed victims, unemployed victims and drug abusers were exposed to successful attempts more than others. Screening plans can be helpful in preventing suicide by prioritizing the people at risk.

One of the main problems in forensic medicine is the autopsy diagnosis of drowning, especially in the case of delay in the victim's recovery. The body of a 37-year-old woman was delivered to Kahrizak autopsy centre for post mortem. She was drowned in a public Jacuzzi because when she bent down to pick up her hairpin from the bottom of the Jacuzzi, her right arm became stuck in the drainage pipe and was sucked in. Unfortunately, she was not resuscitated after being pulled out of the Jacuzzi. The ambulance arrived too late, and she was already dead on arrival at the hospital. Her family pursued a claim against the managers and personnel of the pool for poor security management and failure to resuscitate. A forensic examination was needed to determine the manner of her death (natural, accidental, suicide and homicide).

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