Clinical Toxicity: Introduction and Management Principles
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Questions and Answers

What differentiates a poison from a remedy according to Paracelsus?

  • The right dose (correct)
  • The method of administration
  • The color of the substance
  • The type of substance

Which of the following is considered dose dependent drug toxicity?

  • Side effects (correct)
  • Overdose
  • Idiosyncratic hypersensitivity
  • Allergic reactions

What can happen if β blockers affect the β receptors in the bronchi?

  • Bronchoconstriction (correct)
  • Vasodilation
  • Increased heart rate
  • Reduced blood pressure

Which adverse effects of a drug are considered when taken in excess of the therapeutic range?

<p>Overdose (D)</p> Signup and view all the answers

Which type of drug toxicity can manifest as idiosyncratic hypersensitivity?

<p>Dose independent drug toxicity (A)</p> Signup and view all the answers

Why is it important to know the side effect profile of a drug?

<p>To avoid severe side effects (B)</p> Signup and view all the answers

What is the primary objective of biotransformation?

<p>Decrease toxicity (D)</p> Signup and view all the answers

How does the body defend against foreign substances?

<p>By using biotransformation enzymes and antioxidants (C)</p> Signup and view all the answers

Which route of excretion involves volatile compounds being exhaled?

<p>Exhalation (B)</p> Signup and view all the answers

Which route of absorption allows chemicals to enter the blood via the alveoli?

<p>Inhalation (D)</p> Signup and view all the answers

Where do lipophilic compounds like DDT tend to store in the body?

<p>Adipose tissue (A)</p> Signup and view all the answers

How does bioactivation impact the clearance rate of compounds?

<p>It increases the rate of clearance (B)</p> Signup and view all the answers

What effect can biotransformation have on the concentration of active compounds at the target site?

<p>Decrease amount at target site (C)</p> Signup and view all the answers

What is the process by which a chemical agent translocates throughout the body called?

<p>Distribution (A)</p> Signup and view all the answers

Which factor does NOT influence the rate of distribution of a toxicant in the body?

<p><strong>Temperature</strong> (B)</p> Signup and view all the answers

Which organ plays a role in biliary excretion of toxicants?

<p>Liver (A)</p> Signup and view all the answers

How can urinary excretion aid in eliminating toxicants?

<p>By filtering out water-soluble products (A)</p> Signup and view all the answers

How can rapid mobilization of fat affect blood concentration of lipophilic compounds?

<p><strong>Increase it</strong> (C)</p> Signup and view all the answers

What is the potential consequence of an overdose of barbiturates?

<p>Respiratory depression (C)</p> Signup and view all the answers

Which drug overdose leads to liver damage by saturating the normal conjugation reaction?

<p>Paracetamol (D)</p> Signup and view all the answers

What does N acetylcysteine act as when given to treat a paracetamol overdose?

<p>A precursor to glutathione (B)</p> Signup and view all the answers

What is an idiosyncratic reaction to a drug dose characterized by?

<p>Genetically determined unusual response (D)</p> Signup and view all the answers

What is the main function of glutathione in the body's response to paracetamol overdose?

<p>Neutralize reactive intermediates (A)</p> Signup and view all the answers

Which drug causes muscle paralysis and respiratory depression at high concentrations?

<p>Suxamethonium (C)</p> Signup and view all the answers

What is a common cause of death in an acutely poisoned patient?

<p>Loss of respiratory drive (B)</p> Signup and view all the answers

How does activated charcoal aid in preventing the absorption of poisons?

<p>By chemical adsorption of many poisons (D)</p> Signup and view all the answers

What is one method mentioned to alter biotransformation as a way to prevent the toxicity of compounds?

<p>Interfering with metabolic conversion of compounds (B)</p> Signup and view all the answers

In treating acute poisoning, what is the first goal mentioned in the strategies outlined?

<p>Maintain respiration and circulation (C)</p> Signup and view all the answers

What is one way to determine the location and ratio of ionized to un-ionized poison in the body?

<p>Use drug dissociation constant and Henderson-Hasselbach equation (B)</p> Signup and view all the answers

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