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Examples of Commercial Products and Generic Names
| Acrylonitrite | | Organic Bound Cyanides |
| Calcium Cyanide | | Cyanogas |
| Hydrogen Cyanide | | Hydrocyanic Acid |
Pharmacological Action or Site of Toxicity
Cell Metabolism
Cyanide fumigants affect cytochomoxidases primarily in heart and brain.Routes of Absorption
Ingestion
Inhalation
Dermal
WHO Hazard Classification
Class 1Symptoms
One of fastest acting known poisons.
| MASSIVE DOSE |
Unconsciousness and death without
warning
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| SMALLER DOSES |
Illness may last one or more hours.
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| FOLLOWING INGESTION: |
Bitter, acrid, burning taste followed by constriction of membrane in throat. Salivation and nausea without vomiting, anxiety, confusion, and dizziness. Variable respirations
/ inspiration short and expiration prolonged. Order of bitter almonds in breath and
vomitus. Initial increase in blood pressure and slowing of heart followed by rapid and irregular pulse. palpitation and constriction of chest. Unconsciousness, convuisions and death from respiratory
failure |
Treatment
- SPEED IS IMPERATIVE
If apneic, start artificial respiration. Keep airway open.
- INHALATION OF AMYL NITRITE (AMYL NITRITE PEARLS) every 15-30 seconds of glycerol trinitrate (Nitrol) 1 inch applied on the
non-hairy past of the chest near the heart.
- Intravenous injection (even of
non-sterile solution) of 10 ml of 3% sodium nitrite over
2-4 minute period. DO NOT REMOVE NEEDLE.
- Through same needle give 50 ml of 25% solution of sodium thiosulfate
over 10 minutes.
ALTERNATIVE to sodium nitrate and sodium thiosulfate:
HYDROXOCABLMIN 5 gm IV bolus, single dose.
- If symptoms recur repeat the nitrite and thiosulfate.
- In case of ingestion stomach lavage with 5% sodium bicarbonate should
follow the above procedure.
- After lavage, Charcoal (40 gm) should be placed into the stomach.
- Oxygen therapy and whole blood transfusions may be necessary if nitrite
induced methemoglobinemia becomes severe.
Lab Tests
No simple tests. Only complex laboratory procedures. Send blood for cyanide levels. Levels of 0.1 mg/l usually associated with
symptoms
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Pakistan Agricultural
Pesticides Association
909-910, Park Avenue, P.E.C.H.S.,
Shahrah-e-Faisal,
Karachi-75400
Tel:454 1562 Fax:454 6131
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