What are the complications of organophosphate poisoning?
Complications include severe bronchorrhea, seizures, weakness, and neuropathy. Respiratory failure is the most common cause of death.
What are the features of organophosphorus poisoning?
Purpose: The typical toxidrome in organophosphate (OP) poisoning comprises of the Salivation, Lacrimation, Urination, Defecation, Gastric cramps, Emesis (SLUDGE) symptoms.
Does organophosphate poisoning cause pinpoint pupils?
Organophosphate poisoning is poisoning due to organophosphates (OPs). Organophosphates are used as insecticides, medications, and nerve agents. Symptoms include increased saliva and tear production, diarrhea, vomiting, small pupils, sweating, muscle tremors, and confusion.
Why is oximes used in organophosphorus poisoning?
The main therapeutic effect of pralidoxime is predicted to be recovery of neuromuscular transmission at nicotinic synapses. In vitro experiments have shown that oximes are effective reactivators of human AChE inhibited by OP compounds.
What is intermediate syndrome?
Intermediate Syndrome is a Delayed Onset of Muscle Weakness and Paralysis. The intermediate syndrome is a delayed-onset of muscular weakness and paralysis following an episode of acute cholinesterase inhibitor poisoning.
How do organophosphates affect the nervous system?
Upon entering the body—through ingestion, inhalation, or contact with skin—organophosphates inhibit cholinesterase, an enzyme in the human nervous system that breaks down acetylcholine, a neurotransmitter that carries signals between nerves and muscles.
What are the signs and symptoms of acute poisoning with organophosphorus compounds describe its clinical management?
Emergency signs of organophosphate poisoning include:
- very narrowed pupils.
- confusion.
- agitation.
- convulsions.
- excessive body secretions, including sweat, saliva, mucus, and tears.
- irregular heartbeat.
- collapse.
- respiratory depression or arrest.
How does organophosphates affect the nervous system?
What do organophosphates do to the body?
Long after exposure, people also can develop nervous system problems such as muscle weakness and numbness and tingling of the hands and feet (neuropathy). Long-term exposure to organophosphates can cause confusion, anxiety, loss of memory, loss of appetite, disorientation, depression, and personality changes.
What is the mechanism of action of oximes?
The fundamental action of the pyridinium oximes is to reactivate AChE inhibited by OPs (Fig. 3), thus allowing ACh to be hydrolyzed in the usual way and resumption of normal cholinergic neurotransmission.
Why oximes are not used in carbamate poisoning?
The administration of oximes, acetylcholinesterase reactivators, in carbamate poisoning is controversial because of the potential toxicity of oximes in conjunction with carbamate especially in the case of the carbamate–“carbaryl” poisoning. However, recent data suggest that this concern may be unwarranted.
