poison(redirected from Toxic Substances)
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Corrosives are poisons that destroy tissues directly. They include the mineral acids, such as nitric acid, sulfuric acid, and hydrochloric acid; the caustic alkalis, such as ammonia, sodium hydroxide (lye), sodium carbonate, and sodium hypochlorite; and carbolic acid (phenol). Irritants are poisons that inflame the mucous membranes by direct action. These include arsenic, copper sulfate, salts of lead, zinc, and phosphorus, and many others. neurotoxins or nerve toxins act on the nerves or affect some of the basic cell processes. This large group includes the narcotics, such as opium, heroin, and cocaine, and the barbiturates, anesthetics, and alcohols. hemotoxins or blood toxins act on the blood and deprive it of oxygen. They include carbon monoxide, carbon dioxide, hydrocyanic acid, and the gases used in chemical warfare. Some blood toxins destroy the blood cells or the platelets. See also poisoning and names of individual poisons.
poison/poi·son/ (poiz´'n) a substance that, on ingestion, inhalation, absorption, application, injection, or development within the body, in relatively small amounts, may cause structural damage or functional disturbance.poi´sonous
Oncology A popular term for any cytotoxic drug used to manage cancer
Toxicology A toxic substance that adversely affects the metabolism of a cell, tissue or entire organism, evoking biochemical and histologic changes, and possibly evoking irreversible cell damage and/or death
Haemodialysis, peritoneal dialysis Sedative-hypnotics (chloral hydrate, ethanol, ethylene glycol, methanol, barbiturates, meprobamate, analgesics), acetaminophen, aspirin, phenacetin, amphetamines, heavy metals (arsenic, lead, mercury) metallic salts (e.g., of calcium or lithium) halides, alkaloids (quinine, strychnine, anilines, carbon tetrachloride, ergotamine, INH, nitrofurantoin, phenytoin, theophylline)
Nondialysis poisons Amitriptyline, anticholinergics, antidepressants, atropine, benzodiazepines, digitalis, hallucinogens, heroin, methaqualone, phenelzine, phenothiazines, propoxyphene
poisonDrug slang A regional street term for heroin; fentanyl Toxicology A toxic substance that adversely affects the metabolism of a cell, tissue or entire organism, evoking biochemical and histologic changes, and possibly evoke irreversible cell damage and/or death Management–dialysis Sedative-hypnotics–chloral hydrate, ethanol, ethylene glycol, methanol, barbiturates, meprobamate, analgesics–acetaminophen, aspirin, phenacetin, amphetamines, heavy metals–arsenic, lead, mercury, metallic salts–eg, of calcium or lithium, halides, alkaloids–quinine, strychnine, anilines, carbon tetrachloride, ergotamine, INH, nitrofurantoin, phenytoin, theophylline Nondialysis poisons Amitriptyline, anticholinergics, antidepressants, atropine, benzodiazepines, digitalis, hallucinogens, heroin, methaqualone, phenelzine, phenothiazines, propoxyphene
See also: toxicant, intoxicant
poisonAny substance capable, in small amounts, of damaging the structure or function of living organisms or of causing their death. The virulence of a poison is assessed by the smallness of the dose required to produce its effect and by the severity of the effect. Many of the most poisonous substances act by interfering with fundamental cell enzyme systems. Bacterial toxins are amongst the most poisonous substances known.
Patient discussion about poison
Q. How Do You Treat Food Poisoning? I've been suffering from food poisoning for the last two days, is there a way to treat it? Is there specific food I should avoid?
Q. What are the Symptoms of Food Poisoning? My kid started vomiting non-stop tonight, but has doesn't have a fever. We ate lunch at this new restaurant, could this be related? What are the symptoms of food poisoning?
Q. How can I tell if I have food poisoning? I've been having diarrhea and been vomiting for 2 days now. How can I tell if it's food poisoning or anything else?