Inhaled anesthetics MCQs

By: Prof. Dr. Fazal Rehman Shamil | Last updated: September 13, 2024

Inhaled Anesthetics MCQs

1. Which of the following is a common inhaled anesthetic?
   a) Propofol
   b) Isoflurane
   c) Midazolam
   d) KetamineAnswer: b) Isoflurane
2. What is the primary purpose of inhaled anesthetics?
   a) Induce and maintain general anesthesia
   b) Provide local anesthesia
   c) Manage postoperative pain
   d) Facilitate muscle relaxationAnswer: a) Induce and maintain general anesthesia
3. Which inhaled anesthetic is known for its rapid onset and offset?
   a) Nitrous oxide
   b) Halothane
   c) Sevoflurane
   d) DesfluraneAnswer: d) Desflurane
4. Which inhaled anesthetic is most commonly used for induction in pediatric anesthesia?
   a) Halothane
   b) Isoflurane
   c) Sevoflurane
   d) Nitrous oxideAnswer: c) Sevoflurane
5. What is the main advantage of using nitrous oxide as an inhaled anesthetic?
   a) Rapid onset and recovery
   b) High potency
   c) Long duration of action
   d) Minimal cardiovascular effectsAnswer: a) Rapid onset and recovery
6. Which inhaled anesthetic is associated with a higher incidence of airway irritation?
   a) Sevoflurane
   b) Desflurane
   c) Isoflurane
   d) Nitrous oxideAnswer: b) Desflurane
7. What is the main mechanism of action of inhaled anesthetics?
   a) Potentiation of GABA receptors
   b) Blockade of NMDA receptors
   c) Inhibition of sodium channels
   d) Activation of opioid receptorsAnswer: a) Potentiation of GABA receptors
8. Which inhaled anesthetic is known for its minimal impact on cardiovascular function?
   a) Halothane
   b) Isoflurane
   c) Sevoflurane
   d) Nitrous oxideAnswer: c) Sevoflurane
9. Which inhaled anesthetic has the highest potency?
   a) Halothane
   b) Nitrous oxide
   c) Desflurane
   d) IsofluraneAnswer: a) Halothane
10. Which inhaled anesthetic can cause nephrotoxicity in rare cases?
    a) Sevoflurane
    b) Desflurane
    c) Nitrous oxide
    d) IsofluraneAnswer: a) Sevoflurane
11. Which inhaled anesthetic is most likely to cause malignant hyperthermia?
    a) Halothane
    b) Sevoflurane
    c) Desflurane
    d) IsofluraneAnswer: a) Halothane
12. Which property of an inhaled anesthetic describes how quickly it reaches the brain from the lungs?
    a) Blood/gas partition coefficient
    b) Oil/gas partition coefficient
    c) Minimum alveolar concentration
    d) Vapor pressureAnswer: a) Blood/gas partition coefficient
13. Which inhaled anesthetic is commonly used in combination with other anesthetics due to its analgesic properties?
    a) Nitrous oxide
    b) Sevoflurane
    c) Isoflurane
    d) DesfluraneAnswer: a) Nitrous oxide
14. What is the effect of inhaled anesthetics on the respiratory system?
    a) Respiratory depression
    b) Increased respiratory rate
    c) Enhanced mucociliary function
    d) BronchoconstrictionAnswer: a) Respiratory depression
15. Which inhaled anesthetic is considered the least potent?
    a) Nitrous oxide
    b) Isoflurane
    c) Desflurane
    d) SevofluraneAnswer: a) Nitrous oxide
16. Which inhaled anesthetic is known for causing the least postoperative nausea and vomiting?
    a) Halothane
    b) Sevoflurane
    c) Isoflurane
    d) DesfluraneAnswer: b) Sevoflurane
17. Which inhaled anesthetic is preferred in outpatient surgical procedures due to its rapid recovery profile?
    a) Halothane
    b) Sevoflurane
    c) Isoflurane
    d) Nitrous oxideAnswer: b) Sevoflurane
18. Which inhaled anesthetic has a high vapor pressure, requiring special equipment for delivery?
    a) Nitrous oxide
    b) Sevoflurane
    c) Desflurane
    d) IsofluraneAnswer: c) Desflurane
19. Which inhaled anesthetic is associated with the production of nephrotoxic compound A?
    a) Sevoflurane
    b) Isoflurane
    c) Desflurane
    d) Nitrous oxideAnswer: a) Sevoflurane
20. Which inhaled anesthetic is known for its cardiovascular stability?
    a) Isoflurane
    b) Sevoflurane
    c) Nitrous oxide
    d) DesfluraneAnswer: b) Sevoflurane
21. What is the primary method of elimination for inhaled anesthetics?
    a) Exhalation through the lungs
    b) Metabolism in the liver
    c) Excretion in the urine
    d) Absorption in the tissuesAnswer: a) Exhalation through the lungs
22. Which inhaled anesthetic is known to cause hepatotoxicity in some patients?
    a) Halothane
    b) Sevoflurane
    c) Desflurane
    d) IsofluraneAnswer: a) Halothane
23. Which inhaled anesthetic is used to provide analgesia in addition to anesthesia?
    a) Nitrous oxide
    b) Isoflurane
    c) Sevoflurane
    d) DesfluraneAnswer: a) Nitrous oxide
24. Which inhaled anesthetic is characterized by a high minimum alveolar concentration (MAC)?
    a) Nitrous oxide
    b) Halothane
    c) Desflurane
    d) IsofluraneAnswer: a) Nitrous oxide
25. Which inhaled anesthetic has the lowest blood/gas partition coefficient?
    a) Desflurane
    b) Sevoflurane
    c) Isoflurane
    d) Nitrous oxideAnswer: a) Desflurane
26. Which inhaled anesthetic can cause the production of carbon monoxide when exposed to desiccated soda lime?
    a) Sevoflurane
    b) Halothane
    c) Isoflurane
    d) DesfluraneAnswer: d) Desflurane
27. Which inhaled anesthetic is commonly used in combination with nitrous oxide for its analgesic properties?
    a) Sevoflurane
    b) Desflurane
    c) Halothane
    d) IsofluraneAnswer: a) Sevoflurane
28. What is the main advantage of using a low blood/gas partition coefficient inhaled anesthetic?
    a) Rapid induction and recovery
    b) High potency
    c) Minimal respiratory depression
    d) Low costAnswer: a) Rapid induction and recovery
29. Which inhaled anesthetic is most likely to cause cardiovascular depression?
    a) Halothane
    b) Sevoflurane
    c) Desflurane
    d) IsofluraneAnswer: a) Halothane
30. Which inhaled anesthetic is least likely to cause airway irritation?
    a) Sevoflurane
    b) Desflurane
    c) Isoflurane
    d) Nitrous oxideAnswer: a) Sevoflurane
31. Which inhaled anesthetic is known to increase cerebral blood flow?
    a) Isoflurane
    b) Sevoflurane
    c) Halothane
    d) DesfluraneAnswer: a) Isoflurane
32. Which inhaled anesthetic is commonly used in high-risk cardiovascular patients due to its minimal hemodynamic effects?
    a) Isoflurane
    b) Halothane
    c) Sevoflurane
    d) DesfluraneAnswer: c) Sevoflurane
33. Which inhaled anesthetic has the highest rate of metabolism in the liver?
    a) Halothane
    b) Sevoflurane
    c) Isoflurane
    d) DesfluraneAnswer: a) Halothane
34. Which inhaled anesthetic is known to produce a pungent odor that can cause airway irritation?
    a) Sevoflurane
    b) Desflurane
    c) Isoflurane
    d) Nitrous oxideAnswer: b) Desflurane
35. Which inhaled anesthetic has the highest oil/gas partition coefficient?
    a) Halothane
    b) Isoflurane
    c) Sevoflurane
    d) DesfluraneAnswer: a) Halothane
36. Which inhaled anesthetic is preferred for rapid changes in anesthesia depth due to its low blood/gas partition coefficient?
    a) Sevoflurane
    b) Desflurane
    c) Isoflurane
    d) HalothaneAnswer: b) Desflurane
37. Which inhaled anesthetic can contribute to vitamin B12 deficiency due to its effect on methionine synthase?
    a) Nitrous oxide
    b) Isoflurane
    c) Sevoflurane
    d) DesfluraneAnswer: a) Nitrous oxide
38. Which inhaled anesthetic is least likely to cause malignant hyperthermia?
    a) Desflurane
    b) Isoflurane
    c) Sevoflurane
    d) Nitrous oxideAnswer: d) Nitrous oxide
39. Which inhaled anesthetic is characterized by a high vapor pressure and thus requires a special vaporizer?
    a) Isoflurane
    b) Sevoflurane
    c) Nitrous oxide
    d) DesfluraneAnswer: d) Desflurane
40. Which inhaled anesthetic is associated with the lowest incidence of postoperative cognitive dysfunction in elderly patients?
    a) Sevoflurane
    b) Halothane
    c) Desflurane
    d) IsofluraneAnswer: a) Sevoflurane
41. Which inhaled anesthetic is considered the most suitable for outpatient surgery due to its rapid recovery profile?
    a) Halothane
    b) Isoflurane
    c) Sevoflurane
    d) DesfluraneAnswer: c) Sevoflurane
42. Which inhaled anesthetic is known for its environmental impact due to its potential to contribute to global warming?
    a) Halothane
    b) Isoflurane
    c) Sevoflurane
    d) DesfluraneAnswer: d) Desflurane
43. Which inhaled anesthetic is known for its low flammability and safety in operating rooms?
    a) Sevoflurane
    b) Nitrous oxide
    c) Isoflurane
    d) HalothaneAnswer: a) Sevoflurane
44. Which inhaled anesthetic is commonly used in combination with opioids to enhance analgesia during surgery?
    a) Nitrous oxide
    b) Desflurane
    c) Sevoflurane
    d) IsofluraneAnswer: a) Nitrous oxide
45. Which inhaled anesthetic has the highest MAC value and thus requires higher concentrations to achieve anesthesia?
    a) Desflurane
    b) Isoflurane
    c) Sevoflurane
    d) HalothaneAnswer: a) Desflurane
46. Which inhaled anesthetic has been largely replaced due to its hepatic toxicity and environmental concerns?
    a) Sevoflurane
    b) Desflurane
    c) Isoflurane
    d) HalothaneAnswer: d) Halothane
47. Which inhaled anesthetic is known for causing minimal hepatic enzyme induction?
    a) Sevoflurane
    b) Desflurane
    c) Isoflurane
    d) Nitrous oxideAnswer: c) Isoflurane
48. Which inhaled anesthetic is used predominantly for its analgesic effects rather than its anesthetic properties?
    a) Nitrous oxide
    b) Sevoflurane
    c) Isoflurane
    d) HalothaneAnswer: a) Nitrous oxide
49. Which inhaled anesthetic is known to have the least effect on myocardial contractility?
    a) Desflurane
    b) Isoflurane
    c) Sevoflurane
    d) HalothaneAnswer: c) Sevoflurane
50. Which inhaled anesthetic requires careful monitoring due to its potential to cause airway irritation and cough?
    a) Sevoflurane
    b) Isoflurane
    c) Desflurane
    d) Nitrous oxideAnswer: c) Desflurane

    Topic-wise Anesthesia MCQs

    1. Anesthesiology MCQs
    2. Anesthesia Basics:
       • Levels of sedation and anesthesia MCQs
       • Stages of anesthesia MCQs
    3. Anesthesia Agents MCQs:
       • Inhaled anesthetics MCQs
       • Intravenous anesthetics MCQs
       • Neuromuscular blocking agents MCQs
       • Local anesthetics MCQs
    4. Airway Management:
       • Endotracheal intubation MCQs – Anesthesia
       • Supraglottic airway devices MCQs – Anesthesia
       • Video laryngoscopy MCQs – Anesthesia
       • Difficult airway management MCQs – Anesthesia
    5. Anesthesia Monitoring MCQs – Anesthesia:
       • Hemodynamic monitoring MCQs – Anesthesia
       • Pulse oximetry MCQs – Anesthesia
       • Capnography MCQs – Anesthesia
       • Temperature monitoring MCQs – Anesthesia
    6. Regional Anesthesia MCQs :
       • Epidural anesthesia MCQs
       • Spinal anesthesia MCQs
       • Peripheral nerve blocks MCQs
    7. Patient Assessment and Optimization:
       • Pre-operative assessment MCQs – Anesthesia
       • Patient history and physical examination MCQs – Anesthesia
       • Risk assessment and optimization MCQs – Anesthesia
    8. Anesthesia Delivery Systems MCQs:
       • Inhalation anesthesia machines MCQs – Anesthesia
       • Intravenous anesthesia techniques MCQs – Anesthesia
    9. Pediatric Anesthesia MCQs :
       • Considerations for anesthesia in pediatric patients MCQs – Anesthesia
       • Pediatric airway management MCQs – Anesthesia
       • Pediatric drug dosages MCQs – Anesthesia
    10. Obstetric Anesthesia MCQs – Anesthesia:
        • Anesthesia for labor and delivery MCQs
        • Epidural analgesia in obstetrics MCQs – Anesthesia
        • Anesthetic considerations for cesarean section
    11. Anesthesia Complications and Emergencies MCQs:
        • Malignant hyperthermia MCQs – Anesthesia
        • Anaphylaxis MCQs – Anesthesia
        • Cardiac arrest during anesthesia MCQs – Anesthesia
    12. Post-Anesthesia Care MCQs:
        • Recovery room management MCQs – Anesthesia
        • Pain management strategies MCQs – Anesthesia
        • Post-operative complications related to anesthesia MCQs
    13. Geriatric Anesthesia:
        • Considerations for anesthesia in elderly patients MCQs – Anesthesia
        • Geriatric pharmacology MCQs – Anesthesia
        • Management of common comorbidities MCQs – Anesthesia
    14. Ethics and Professionalism in Anesthesia MCQs:
        • Informed consent MCQs – Anesthesia
        • Patient autonomy MCQs – Anesthesia
        • Professional conduct and communication MCQs – Anesthesia
    15. Simulation and Skills Training MCQs :
        • Hands-on training in airway management and procedures MCQs – Anesthesia
        • Simulation exercises for crisis management MCQs – Anesthesia