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tox final
clinical tox
26
Biology
Graduate
05/08/2007

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Term
What type of stabilization procedures are usually performed when someone is brought in for poisoning?
Definition
assess vital signs - give ventilation or circulation support
Term
What things do you want to determine in a patient history?
Definition
the extent and time of exposure to a toxic agent
Term
Do you under or overestimate the dose of toxin receive if you're taking a history?
Definition
overestimate - maximize the dose
Term
Who else besides the patient might be able to give an exposure history?
Definition
relatives, emergency personnel, pharmacist, employer
Term
what are toxidromes?
Definition
a collection of clinical signs taken together that are associated witih exposure to specific classes of toxicologic agents
Term
What are the signs for exposure to sypathomimetic agents - BP, pulse, temperature, pupils, neurologic?
Definition
BP-increased*pulse-increased*temp - slightly elevated* pupils-mydriasis* neurologic-hyperalert
Term
What are the signs for exposure to anticholinergic agents - BP, pulse, temperature, pupils, neurologic?
Definition
BP-increased*pulse-increased*temp-increased*pupils-mydriasis*decreased bowel sounds*altered mental status
Term
What are the signs for exposure to cholinergic agents - BP, pulse, temperature, pupils, lungs, abdomen, neurologic?
Definition
decreased BP, decreased pulse, miosis pupils, increased bronchial sounds, increased bowel sounds, altered mental state
Term
What are the signs for exposure to opoid agents - BP, pulse, temperature, pupils, neurologic?
Definition
decreased BP, pulse, and temp * miosis*decreased bowel sounds and level of consciousness
Term
What does categorization allow for?
Definition
allows for initiation of treatment based on the most likely category of toxin responsible even if the exact toxin is unknown
Term
Are the number of possible agents greater or lesser than what you can actually test for?
Definition
greater
Term
What is a nomogram?
Definition
a guide for therapeutic intervention based on measured plasma concentration - it predicts the severity of poisoning
Term
What are the requirements to make a salicylate nomogram?
Definition
blood must be drawn at least 6 hours after ingestion and it had to have been a single acute ingestion - not multiple doses
Term
Who established the salicylate nomogram?
Definition
Done in 1960
Term
Who established the acetominophen nomogram?
Definition
Rumack-Mathew in 1975
Term
What does an acetominophen nomogram do for the clinician?
Definition
predicts an outcome and guides them in deciding whether to administer N-acetyl cysteine
Term
How long after ingestion can you draw blood for an acetominophen nomogram? What is critical to know when using an acetominophen nomogram?
Definition
4 hours * knowledge of ingestion, and ingestion must be a single dose
Term
What is an anion gap? What will narrow down the list of suspects considerably if present?
Definition
the difference in Na levels and Cl and HCO3 levels * metabolic acidosis
Term
What is the acronym of agents that cause metabolic acidosis and anion gap? What does it stand for?
Definition
AT MUD PILES * alcohol, toluene; methanol, uremia, diabetic ketoacidosis; paraldehyde, iron, lactic acid, ethylene glycol, salicylate
Term
What is a normal ion gap? Normal osmol gap?
Definition
<12, <10
Term
What does an elevated osmol gap suggest? What substances can cause this?
Definition
the presence of an osmotically active substance not accounted for by Na, glucose, or BUN * ethanol, ethylene glycol, isopropanol, and methanol
Term
What radiographs are useful (what regions)? What substances are able to be visualized?
Definition
chest and abdomen* lead, carbon tetrachloride/chloroform
Term
What is ipicac syrup? When should you not use it?
Definition
syrup used to induce vomiting * children under 6 months, caustic substances, depressed level of consciousness or gag reflex, significant risk of aspiration
Term
What is gastric lavage?
Definition
placing an orogastric tube into the stomach and aspirating until fluid is clear
Term
What is activated charcoal?
Definition
charcoal that has been processed to absorb more toxins - it has an increased surface area b/c there are small pores
Term
What are the ways you can remove poisons once they are absorbed?
Definition
alkalinization (helps eliminate weak acids), dialysis, hemoperfusion, hemofiltration, plasma exchange, and serial oral activated charcoal
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