Neurotoxic Pesticides Practice Test

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• What is a characteristic difference between Type I and Type II pyrethroids in their neurotoxic profile?
• What signs are the first to appear with OP/carbamate toxicity?
• Larkspur contains which type of alkaloids?
• Strychnine is an indole alkaloid used as an OTC rodenticide for gophers with below-ground use restricted to what maximum concentration?
• What is used to treat hypersensitivity reactions to imidacloprid?
• Dip/Spray for blowfly and lice in livestock uses which Category 1 OP that is practically non-existent?
• Strychnine usage restrictions specify below-ground bait at what maximum concentration?
• Among Pyrethroid Insecticide Synergists, which is the most commonly used?
• Which management step is crucial for patients with pesticide-induced seizures?
• Absorption of macrocyclic lactones is quicker via which route?
• True or False: Atropine will correct adverse signs of OP/carbamate toxicity associated with muscarinic and nicotinic receptors.
• Which term best describes poisoning that results from improper use of OP/Carbamate pesticides including feed-related problems, overspray, and not observing withdrawal periods?
• What is true about the elimination half-life of macrocyclic lactones with oral versus subcutaneous administration?
• What is the primary cause of death due to OP/carbamate toxicity?
• Which three environmental components break down pesticides in the environment?
• Which mammal is particularly sensitive to pyrethrins?
• Which feature is commonly observed in metaldehyde poisoning?
• Most veterinary products fall into which toxicity category?
• Which animals are most commonly affected by herbicide poisoning from concentrates or tank mixes?
• Which safety consideration is most accurate regarding macrocyclic lactones in dogs with certain genetic mutations?
• Risk assessments categorize neurotoxic pesticides for occupational exposure based on which factors?
• Neonicotinoids differ from organophosphates because they act as
• Which statement best describes glyphosate's safety and possible clinical course?
• Which pesticide presents with onset 30 minutes to 3 hours and signs including hypersalivation, tremors, incoordination, vomiting, hyperthermia, convulsions, diarrhea, and a formaldehyde smell in the stomach along with bait material?
• What analytical technique is commonly used to quantify organophosphate metabolites in urine?
• Which statement best describes the primary toxic mechanism of organophosphates?
• The majority of pyrethrins are metabolized and eliminated in roughly how many hours?
• Why is timing critical for oxime therapy in organophosphate poisoning?
• What route of exposure are birds particularly sensitive to for pyrethroids?
• Dichlorvos and Malathion are in which Organophosphate category?
• Which detoxification measures are included in the treatment of OP/carbamate toxicity?
• Which organophosphate is used in fly strips in stables?
• Which clinical sign is commonly observed in the early muscarinic phase of organophosphate poisoning?
• Synthetic derivatives of natural pyrethrins that are more potent, toxic, and more stable in the environment are known as?
• What is the MOA of metaldehyde?
• Which option reflects the initial pharmacologic management for pesticide-induced seizures?
• If a dog presents with herbicide toxicity, what should be suspected?
• What is a limitation of using AChE activity alone to gauge organophosphate poisoning risk?
• How do carbamate pesticides differ from organophosphates in their inhibition of acetylcholinesterase?
• Pyrethrins are derived from natural pyrethrum and are readily degraded in the environment. What are these compounds called?
• What is the treatment for OP/carbamate toxicity?
• Regarding the P-glycoprotein transporter in macrocyclic lactone pharmacology, which statements are correct?
• Which factors influence the environmental fate and neurotoxic potential of pesticides?
• Which pairing correctly matches the plant group with its toxic component according to the material?
• Which signs are indicative of muscarinic cholinergic toxicity?
• EPA Pesticide Toxicity Categories & Signal Words: Category 2 corresponds to which signal word?
• In treating strychnine poisoning, which condition should be corrected alongside acidosis and decreased GI absorption?
• If a dog has herbicide toxicity, which possibility should be considered?
• The brain can be assessed post mortem for OP/Carbamate toxicity. Half frozen for AChE activity and half for histopathology.
• Which statements about benzodiazepines in organophosphate poisoning are true?
• How do exposure monitoring and effect monitoring differ in pesticide toxicology?
• The prognosis for OP/carbamate toxicosis is good unless which signs occur?
• Besides organophosphates, name another pesticide class that exerts neurotoxicity by altering voltage-gated sodium channels.
• What action do pyrethroid synergists have on metabolic enzymes such as P450 and esterases?
• FARAD stands for which databank?
• Which sign is characteristic of muscarinic overstimulation in organophosphate poisoning?
• All of the following are routes of OP/Carbamate exposure. Which is the most common?
• Which statement is true about P-glycoprotein transporter status and macrocyclic lactone toxicity risk?
• In risk assessment for neurotoxic pesticides, which components are used to categorize for occupational exposure?
• In OP/carbamate toxicity assessment using heparinized whole blood, which thresholds indicate significant exposure and toxicosis respectively?
• Which sign may be observed in macrocyclic lactone toxicity?
• Which statement best describes the relationship between exposure monitoring and effect monitoring?
• Which statement about macrocyclic lactones is true?
• Which pattern of symptoms is characteristic of organophosphate-induced delayed neuropathy?
• What are two common routes of pesticide exposure in agricultural workers?
• How do temperature and humidity influence the dermal absorption of pesticides?
• Aldicarb (Temik) and Carbofuran (Furadan) have no veterinary uses because they're very toxic. If an animal presents with this type of toxicity, what should be suspected?
• What is the mechanism of action of strychnine?
• What best describes the solubility of pyrethrins?
• What is the mechanism of action of macrocyclic lactones (Avermectins & Milbemycins)?
• Which diagnostic indicator is used for OP/Carbamate exposure?
• Which mechanism underlies atropine's effect in organophosphate poisoning?
• What are the nicotinic signs (second to appear) in OP/carbamate toxicity?
• Which term describes how certain drugs interact with organophosphate and carbamate pesticides?
• What is the rationale for using benzodiazepines in pesticide-induced seizures?
• What is the typical clinical syndrome of acute organophosphate poisoning?
• What does MTWTF stand for in the context of nicotinic signs?
• What is a hallmark muscarinic symptom of organophosphate poisoning?
• Which non-cholinesterase mechanism can contribute to pesticide neurotoxicity?
• Which rodenticide is associated with signs such as stiff gait, extensor rigidity, and tonic seizures?
• How long do pyrethroid toxicity signs usually dissipate?
• Which long-term neurotoxic effect is classically associated with exposure to certain organophosphates?
• Which organism is funded by the USDA National Institute of Food & Agriculture to help prevent illegal residues in foods of animal origin?
• What is the primary purpose of measuring exposure and effects in pesticide toxicology?
• Why are neonatal dogs and cats more susceptible to macrocyclic lactone toxicosis?
• Which neonicotinoid insecticide acts as a nicotinic receptor agonist?
• Which action is a key component of strychnine poisoning management?
• Which animals are more susceptible to strychnine poisoning?
• How do organochlorine pesticides like DDT exert neurotoxic effects in mammals?
• What sampling method is commonly used for occupational air monitoring of volatile pesticides?
• Why is skin decontamination a critical step after dermal exposure to pesticides?
• Which PPE ensemble is essential to protect workers from dermal and inhalation exposure to lipophilic pesticides?
• Chronic subclinical neurotoxicity from pesticides can manifest as deficits in which domain?
• In Sorghum species, which compounds are present that can affect toxicity?
• Why are neonicotinoids considered relatively safer for humans?
• Which accompanying signs would most strongly suggest pesticide involvement in a tremor case?
• What does BuChE compensation refer to in organophosphate exposure?
• Diazinon and Chlorpyrifos belong to which Organophosphate category?
• Which statement about strychnine poisoning signs is true?
• What is the purpose and limitation of pralidoxime therapy?
• Which molluscicide is used in pelleted bait and granules and is palatable to slugs, dogs, and other animals?
• In dogs, signs of macrocyclic lactone toxicosis typically appear after how long?
• Which macrocyclic lactone is a milbemycin (all others are avermectins)?
• Beyond mild signs, what additional issue can glyphosate exposure cause in livestock?
• What is the mechanism of action of Organophosphates and Carbamates?
• Which statement best describes OP/carbamate toxicity?
• In organophosphate poisoning, pralidoxime is used to reactivate acetylcholinesterase if administered within what concept?
• What neurocognitive outcomes are commonly observed with chronic low-level exposure to neurotoxic pesticides?
• Which carbamate is Propoxur (Baygon) commonly associated with roach and ant control?
• Pyrethrins are described as which regarding distribution in the body?
• Which body system is likely affected by high-dose OP/carbamates, leading to depression, behavioral changes, hyperactivity, seizures, or coma?
• Who is at greatest risk for neurotoxic pesticide exposure in agricultural settings?
• Which gene mutation is associated with sensitivity to macrocyclic lactones due to defective p-glycoprotein efflux pumps?
• When using atropine to treat OP/carbamate toxicity, do a test dose first by taking HR & then give preanesthetic dose IV.
• OP/carbamate toxicity is associated with which respiratory changes?
• How can you differentiate pesticide-induced neurotoxicity from other causes of tremor clinically?
• Which animals are particularly sensitive to pyrethroid toxicity?
• Which act sets pesticide tolerances for residues on or in human food and animal feed?
• The most toxic class of the selected organophosphates (OPs) includes Parathion, Carbophenothion, and Coumaphos. What category does this refer to?
• Which rodenticide creates non-specific lesions, rapid rigor mortis, a stomach filled with ingested bait dyed green or red, and petechial hemorrhages?
• Which plant is cited as containing cyanogenic glycosides and nitrates?
• Type I Pyrethroids do not have the α-Cyano Group. Which type is this?
• In OP/carbamate toxicity, where is most of the total whole blood AChE activity located?
• EPA Pesticide Toxicity Categories & Signal Words: Category 3 corresponds to which signal word?
• Compared with natural pyrethrins, pyrethroids are more potent, more toxic, and more stable in the environment. Which statement correctly reflects their use?
• What is the treatment for macrocyclic lactone toxicosis?
• Which urinary metabolite class is commonly used to quantify exposure to organophosphates?
• Why is measuring RBC AChE preferred over BuChE for monitoring OP exposure?
• Which PPE practice helps reduce inhalation exposure during pesticide spraying?
• What is the recommended method for topical decontamination in pyrethroid exposure?
• Aldicarb and Carbofuran belong to which Carbamate category?
• Which species is more likely to show macrocyclic lactone toxicity?
• What laboratory pattern would raise suspicion of chronic organophosphate exposure?
• Glyphosate is dangerous to livestock because it may increase palatability of some ____.
• What is the environmental fate of pyrethrins?
• Which plant contains nicotinic alkaloids?
• What is the primary action of atropine in organophosphate poisoning?
• Macrocyclic lactones, including avermectins and milbemycins, are chemical derivatives of soil microorganisms in which genus?
• Name a commonly restricted organophosphate known for developmental toxicity concerns.
• Which statement describes initial management of suspected organophosphate exposure?
• Type 1 or Type 2 pyrethroids last longer and are more toxic?
• Which biomarker is commonly used for recent organophosphate exposure besides AChE activity?
• OP/Carbamates are readily absorbed from all body surfaces especially the GI tract, skin, lungs, and eyes. Which statement is correct?
• Macrocyclic lactones exert their effect by binding to which types of chloride channels?
• Which two categories of cholinergic signs are typically observed in acute organophosphate poisoning?
• The prognosis for OP/carbamate toxicosis is good unless respiratory distress signs or seizures. What medications can be given to control seizures?
• At what percentage AChE inhibition do signs typically arise?
• In organophosphate-inhibited acetylcholinesterase, what is the significance of aging for treatment with oximes?
• Which analytical method is commonly used to analyze organochlorine residues in biological samples?
• What are the muscarinic signs associated with OP/carbamate toxicity?
• Which herbicide is Roundup commonly used to describe?
• How does biomonitoring for organophosphate exposure differ from monitoring for organochlorine exposure?
• Which of the following is a nicotinic sign in acute organophosphate poisoning?
• Which organophosphate is used in cattle/sheep dips, flea collars & shampoos (use is declining)?
• EPA Pesticide Toxicity Categories & Signal Words: Category 4 corresponds to which signal word?
• Which of the following is a critical component of supportive care in organophosphate poisoning?
• Which neonicotinoid insecticide is approved for dogs as a topical spot-on and oral systemic product (Advantage Multi)?
• Which statement correctly describes organophosphate poisoning mechanism?
• Which statement best describes macrocyclic lactone selectivity?
• What is a primary mechanism by which methyl bromide exposure leads to neurotoxicity?
• EPA Pesticide Toxicity Categories & Signal Words: Category 1 corresponds to which signal word?
• Which Category 1 OP is considered prototypical?
• Not observing withdrawal or reentry period before feeding by food animals can result in which consequence?
• Diagnosis of OP/carbamate toxicity typically requires which elements?
• Which class of pesticides is most associated with seizures and neuroexcitation via GABA antagonism?
• Which organophosphate is used in mosquito fogging and as a garden insecticide?
• In the field, what is the correct sequence for initial management of suspected organophosphate poisoning?
• What is the most common exposure route to pyrethrins?
• What is the effect on nicotinic acetylcholine receptors in organophosphate poisoning?
• Which drug is used to control tremors or seizures in pyrethroid poisoning?
• In the field, how can you distinguish cholinergic toxicity from other causes of altered mental status?
• In organophosphate poisoning, atropine primarily counters which signs?
• What does the term aging refer to in organophosphate-cholinesterase complexes?
• Which act authorizes the EPA to suspend or cancel a product's registration?
• The key laboratory indicator for OP/carbamate exposure is reduced activity of which enzyme?
• What is a standard decontamination step for pesticide exposure?
• Which group is more susceptible to OPs/carbamates?
• Why do muscarinic signs appear before nicotinic signs in OP/carbamate toxicity?
• In metaldehyde toxicity, which unique clinical sign can be corrected via thermoregulation?
• What antidotes are commonly used for organophosphate poisoning, and what are their primary roles?
• Which biomarker is most commonly used to assess exposure to organophosphates in humans?
• What is the expected trend in red blood cell AChE activity after acute organophosphate exposure if untreated?
• The brand name Roundup is associated with which herbicide?
• How might chronic low-dose exposure to pesticides manifest in terms of deficits?
• Which enzymatic target is inhibited by organophosphate pesticides, leading to accumulation of acetylcholine?
• Do OPs or carbamates have the faster onset of toxicity?
• Propoxur and Carbaryl (not used much) belong to which Carbamate category?
• Which statement best describes the aging process in the AChE-OP complex?
• Which regulatory metric defines safe chronic exposure to pesticides in drinking water?
• Miosis, tremors, and salivation indicate which toxicity?
• Pyrethroid toxicity presents with which signs?
• Which regulatory body oversees pesticide registration and safety in the United States under FIFRA?
• Strychnine is an OTC rodenticide primarily used for which pest?
• FDA approved Organophosphate toxicity tx that reverses OP inhibition of AChE (reactivates AChE) and can be given with atropine.
• Does oral or dermal exposure to imidacloprid cause drooling or vomiting?
• What are the chemicals added to pyrethrins and pyrethroids to inhibit mixed function oxidases and esterases, prolonging toxic action?
• Which factor is not listed as one of the environmental components that break down pesticides?
• Which organophosphate’s use is restricted in the United States and Europe?
• FQPA stands for which act?
• Pyrethroids constitute approximately what fraction of the world's insecticides used in agriculture and flea control products?
• Which Category 1 OP is used to control horn flies, grubs, lice, and ticks in cattle? Trade names include Co-Ral, Co-Ral Plus, Muster.
• 80% of organophosphate/carbamate poisoning cases are due to food animal exposure from which related problems?
• Antagonist to muscarinic receptors (not nicotinic) for OP toxicity
• Imidacloprid has which characteristic regarding blood-brain barrier penetration?
• Pralidoxime is effective in reversing organophosphate effects by reactivating AChE, but its effectiveness is limited by aging. Which option correctly states this?
• Pralidoxime reactivates AChE if administered before aging; what is its primary mechanism?
• What is the mechanism of action of pyrethroids on the nervous system?
• Which herbicide is described as having a wide margin of safety with signs that are usually mild and self-limiting, though it can cause fluid and electrolyte loss?
• Which insecticide mimics nicotine and binds to postsynaptic nicotinic ACh receptors in insects?
• Which chemical class is associated with Larkspur according to the material?