Case reportSudden death associated with intravenous injection of toad extract
Introduction
In our experience illicit drug administration by intravenous injection may cause death due to a variety of mechanisms including central respiratory depression and cardiotoxicity. Sedation and respiratory depression are most often due to opiate drugs such as heroin and morphine resulting in lethal cerebral hypoxia. The history from witnesses is often of prolonged and deep sleep with snoring after drug administration, followed by failure to rouse and eventually death [1]. Alternatively, intravenous administration of an opioid drug may result in rapid death; the drug may be self-administered or used in a homicide. Amphetamines and other psychostimulants, such as cocaine, may also be injected and may cause hyperpyrexia or have a direct cardiotoxic action [2]. These drugs may also impair reflexes or lead to increased risk taking, both of which may predispose to traumatic deaths. Injected drugs may have an additive or synergistic effect with other drugs or alcohol that may have been previously or concurrently taken. The combined effects of a variety of drugs may also result in death from aspiration of gastric contents if emesis is stimulated and swallowing mechanisms are impaired.
Occasionally a case of witnessed intravenous drug administration occurs that is followed by collapse and rapid death where routine toxicological evaluation does not reveal common drugs of abuse. The details of such a case are reported involving the self-administration of what was thought by the user to be a ring derivative amphetamine.
Section snippets
Case report
A 24-year-old male was observed to collapse and die soon after an intravenous injection of 35–40 ml of what was thought to be ‘ecstasy’ (methylenedioxy-methamphetamine or MDMA). A friend had injected a smaller volume (20 ml) and had vomited but survived. The decedent was a known intravenous amphetamine user but was not known to abuse any other illicit drugs. The body was transferred to FSSA for autopsy along with a plastic bag containing the injected material and the empty syringe.
At autopsy the
Discussion
Bufotenine (dimethylserotonin) is a tryptamine derivative alkaloid related to the neurotransmitter serotonin. It is found naturally in certain plants and in the secretions of various toads [7]. Resibufogenin, cinobufagin and bufalin, known collectively as bufadienolides, are nitrogen-free steroidal lactones that are also found in toad venom. They may be cardiotoxic, having a similar effect to digoxin [4]. Toad secretions have also been dried and smoked as bufotenine has hallucinogenic effects,
Acknowledgement
We would like to thank the South Australian State Coroner, Mr. M. Johns, for permission to publish selected details of this case.
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