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Therapeutic Window & Therapeutic Index quiz

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  • What organ is affected by hepatotoxicity caused by antimicrobial drugs?
    The liver is affected by hepatotoxicity.
  • What does nephrotoxicity refer to in the context of antimicrobial drugs?
    Nephrotoxicity refers to toxicity affecting the kidneys.
  • What is the therapeutic window?
    The therapeutic window is the range of drug dosages that are both effective and non-toxic.
  • Why is the therapeutic window important in prescribing drugs?
    It ensures that the prescribed dose is effective against infection but not toxic to the patient.
  • What does a narrow therapeutic window indicate about a drug's safety?
    A narrow therapeutic window means there is a small margin between effective and toxic doses, making the drug riskier to use.
  • How is the therapeutic index calculated?
    The therapeutic index is calculated as the ratio of the lowest toxic dose to the lowest effective dose.
  • What does a high therapeutic index suggest about a drug?
    A high therapeutic index suggests the drug is safer and there is a larger margin between effective and toxic doses.
  • If a drug has a therapeutic index of 100, what does this mean?
    It means the lowest toxic dose is 100 times higher than the lowest effective dose.
  • What does a therapeutic index of 2 indicate about a drug's safety?
    It indicates that the toxic dose is only twice the effective dose, so the drug must be prescribed with caution.
  • How does the therapeutic index help in drug administration?
    It provides a single number that conveys how safe and easy it is to prescribe a drug.
  • What is the main difference between therapeutic window and therapeutic index?
    The therapeutic window refers to actual dosage ranges, while the therapeutic index is a ratio that summarizes drug safety.
  • Why is it important to understand both therapeutic window and therapeutic index?
    Understanding both helps optimize antimicrobial therapy and minimize adverse effects.
  • What happens if a drug dose is below the therapeutic window?
    The drug will be ineffective at treating the infection.
  • What happens if a drug dose is above the therapeutic window?
    The drug becomes toxic to the patient.
  • Which two organs are most commonly affected by antimicrobial drug toxicity?
    The liver and kidneys are most commonly affected.