2015 Feb SAQs

1. describe the circle breathing system 2. outline the role of carbon dioxide in the maintenance of ventilation 3. outline the protective and regulatory functions of the live 4. a surgeon wishes to use topical LA in the nose. 30yo man 70kg. topical

cocaine 5% plus lignocaine 2% with adrenaline 1:100,000. What volumes of the drugs can be used safely what at the potential toxic effects of cocaine and how does lignocaine and adrenaline affect these

5. sevoflurane and fentanyl are common anaesthetic drug combination. Discuss pharmocoligical reasons why it is useful to use them together.

6. Describe the role of baroreceptors in the control of systemic arterial blood pressure.

7. Briefly outline the effects of sevoflurane on skeletal , smooth and cardiac muscle tissue. Include how these effects are mediated and their clinical significance.

8. List the classes of drugs that may be used to manage an intraop hypertensive crisis and briefly outline the moa

9. What are the physiological consequences of decreasing FRC by 1 L in an adult 10. Outline the physiological changes that may explain why an otherwise well

patient may have a reduced urinary output intraoperatively 11. Discuss the relative advantages and disadvantages of using morphine vs

fentynal for post op PCA 12. Describe the time course between iv injection of ga agent to loss of

consciousness. Explain the delay using pharmacokinetic principles 13. Discuss factors influencing the recovery and reversal of neuromuscular

blockade induced by rocuronium 14. Describe the determinants of venous return and the effects general

anaesthesia would have on these 15. Compare and contrast the effects of general and neuraxial anesthesia

thermoregulation.