Strychnine poisoning

Strychnine poisoning

Classification and external resources
Specialty emergency medicine
ICD-10 T65.1
ICD-9-CM 989.1

Strychnine poisoning can be fatal to humans and other animals and can occur by inhalation, swallowing or absorption through eyes or mouth. It produces some of the most dramatic and painful symptoms of any known toxic reaction. For this reason, strychnine poisoning is often portrayed in literature and film.

Presentation in humans

Ten to twenty minutes after exposure, the body's muscles begin to spasm, starting with the head and neck in the form of trismus and risus sardonicus. The spasms then spread to every muscle in the body, with nearly continuous convulsions, and get worse at the slightest stimulus. The convulsions progress, increasing in intensity and frequency until the backbone arches continually. Convulsions lead to lactic acidosis, hyperthermia and rhabdomyolysis. These are followed by postictal depression. Death comes from asphyxiation caused by paralysis of the neural pathways that control breathing, or by exhaustion from the convulsions. The subject dies within 2–3 hours after exposure.

One medical student in 1896 described the experience in a letter to the Lancet:

Three years ago I was reading for an examination, and feeling "run down". I took 10 minims of strychnia solution (B.P.) with the same quantity of dilute phosphoric acid well diluted twice a day. On the second day of taking it, towards the evening, I felt a tightness in the "facial muscles " and a peculiar metallic taste in the mouth. There was great uneasiness and restlessness, and I felt a desire to walk about and do something rather than sit still and read. I lay on the bed and the calf muscles began to stiffen and jerk. My toes drew up under my feet, and as I moved or turned my head flashes of light kept darting across my eyes.. I then knew something serious was developing, so I crawled off the bed and scrambled to a case in my room and got out (fortunately) the bromide of potassium and the chloral. I had no confidence or courage to weigh them, so I guessed the quantity-about 30 gr. [30 grains, about 2 grams] bromide of potassium and 10 gr. chloral-put them in a tumbler with some water, and drank it off. My whole body was in a cold sweat, with anginous attacks in the precordial region, and a feeling of "going off." I did not call for medical aid, as I thought the symptoms declining. I felt better, but my lower limbs were as cold as ice, and the calf muscles kept tense and jerking. There was no opisthotonos, only a slight stiffness at the back of the neck. Half an hour later, as I could judge, I took the same quantity of bromide of potassium and chloral, and a little time after I lost consciousness and fell into a " profound sleep," awaking in the morning with no unpleasant symptoms, no headache, &c., but a desire " to be on the move " and a slight feeling of stiffness in the jaw.

These worked off during the day.[1]

Treatment

There is no specific antidote for strychnine. Treatment of strychnine poisoning involves an oral application of an activated charcoal infusion which serves to absorb any poison within the digestive tract that has not yet been absorbed into the blood. Anticonvulsants such as phenobarbital or diazepam are administered to control convulsions, along with muscle relaxants such as dantrolene to combat muscle rigidity.[2] If the patient survives past 24 hours, recovery is probable.

The treatment for strychnine poisoning in the late 19th and early 20th centuries was to administer tannic acid which precipitates the strychnine as an insoluble tannate salt, and then to anaesthetise the patient with chloroform until the effects of the strychnine had worn off.

Detection in biological specimens

Strychnine is easily quantitated in body fluids and tissues using instrumental methods in order to confirm a diagnosis of poisoning in hospitalized victims or to assist in the forensic investigation of a case of fatal overdosage. The concentrations in blood or urine of those with symptoms are often in the 1–30 mg/L range.[3]

Strychnine toxicity in animals

Strychnine poisoning in animals occurs usually from ingestion of baits designed for use against rodents (especially gophers and moles) and coyotes. Rodent baits are commonly available over-the-counter, but coyote baits are illegal in the United States. However, since 1990 in the United States most baits containing strychnine have been replaced with zinc phosphide baits.[4] The most common domestic animal to be affected is the dog, either through accidental ingestion or intentional poisoning. The onset of symptoms is 10 to 120 minutes after ingestion.[5] Symptoms include seizures, a "sawhorse" stance, and opisthotonus (rigid extension of all four limbs). Death is usually secondary to respiratory paralysis. Treatment is by detoxification using activated charcoal, pentobarbital for the symptoms, and artificial respiration for apnea.

In most western nations a special license is needed to use and possess strychnine for agricultural use.

Notable strychnine poisonings

The most notable incidents which probably involved strychnine poisoning, are listed here.

In Folklore

In music

Fictional strychnine poisonings

Strychnine has also served as an inspiration in several books, movies and TV series.

In literature

Onscreen, in film

Onscreen, in television

References

  1. Sandall, Leondard, (28 March 1896). "AN OVERDOSE OF STRYCHNINE." The Lancet, 147(3787):887
  2. Strychnine:
  3. R. Baselt, Disposition of Toxic Drugs and Chemicals in Man, 8th edition, Biomedical Publications, Foster City, CA, 2008, pp. 1448-1450.
  4. Ettinger, Stephen J.;Feldman, Edward C. (1995), Textbook of Veterinary Internal Medicine (4th ed.), W.B. Saunders Company, ISBN 0-7216-6795-3
  5. Beasley, V. (1999). "Toxicants Associated with Seizures". Veterinary Toxicology. Retrieved 2006-06-18.
  6. Graham Phillips. Alexander the Great. Murder in Babylon. Virgin Books, 2004. p. 239ff. ISBN 1 85227 134 5.
  7. Kridel, Kristen (February 12, 2008), "A century-old mystery: Did serial killer fake her death?", Chicago Tribune
  8. Cutler, Robert (2003), The Mysterious Death of Jane Stanford, ISBN 0-8047-4793-8
  9. Graves, Tom; LaVere, Steve (2008). Crossroads: The Life and Afterlife of Blues Legend Robert Johnson. Demers Books LLC. pp. 39–43. ISBN 978-0-9816002-0-8. The tale most often told about how Johnson met his fate is that he was poisoned by a jealous husband who put strychnine in his whiskey.
  10. D. Bellandi. "Husband Arrested in Woman's Poisoning Death". Los Angeles Times, August 25, 1990. http://articles.latimes.com/1990-08-25/local/me-818_1_strychnine-poisoning
  11. Rogers, David (February 28, 2008), "Suspect in poisoned-mayor case has been arrested", Wiener Zeitung
  12. "Turkish ex-president's autopsy fuels poisoning speculation". Chicago Tribune. 4 November 2012.
  13. http://www.nationalturk.com/en/late-turkish-president-turgut-ozal-had-he-been-poisoned-indeed-confusing-reports-from-forensics-27597
  14. http://www.slate.com/articles/health_and_science/explainer/2012/11/turgut_ozal_autopsy_how_do_you_perform_an_autopsy_a_body_that_s_been_dead.html
  15. Dennis Covington, Salvation on Sand Mountain: Snake Handling and Redemption in Southern Appalachia (Reading, MA.: Addison-Wesley, 1995).

External links

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