Anaesthesia

Card Set Information

Author:
Anonymous
ID:
99142
Filename:
Anaesthesia
Updated:
2011-08-31 00:05:50
Tags:
vet nursing
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Description:
Simple questions about veterinary anaesthesia.
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  1. What are local anaesthetics used for?
    Local anaesthesia is frequently used in conjunction with sedation to perform minor procedures in small animal
  2. When using lignocaine, how long after injection does
    it usually take for the area to become numb?
    Almost immediatly
  3. How long does the numbness (loss of sensation) usually last for?
    1 hour
  4. Name and describe the function of each of the
    components of the high pressure part of the anaesthetic machine.
    • Oxygen machine - provides oxygen
    • Cylinder Yoke - Attaches cylinder to anasthetic machine
    • Reducing Valve - Reduces the high pressure in the oxygen tank to 50-60 psi
    • Pressure Gauge - Measures the amount of pressure and gas remaining.
  5. How do you carry out a high pressure leak test?
    With the flow meter off, open the O2 cylinder and note the reading on the pressure gauge before closing the cylinder. Re-evaluate in ten to twenty minutes time. If these systems are leak free, the gauge should not have fallen.
  6. What are the common areas where leaks may be found
    with this test?
    • Joints
    • Bodoc Washer
  7. Name and describe the function of each of the
    components of the medium pressure part of the anaesthetic machine. For each
    component describe how you would check that it is functioning correctly.
    • Flowmeter - Shows the amount of oxygen in Litres that is flowing through the system.
    • Oxygen Flush - The oxygen flush device delivers oxygen to the fresh gas outlet of the anaesthetic machine at flow rates of 35 – 75 L/min i.e. it delivers large volumes of oxygen very quickly.
    • Vapouriser - Permits the delivery of a controlled amount of the agent into the patient breathing circuit.
    • Soda Lime canister - Permits the delivery of a controlled amount of the agent into the patient breathing circuit.
  8. How do you carry out a medium pressure leak test?
    Remove the patient breathing circuit from the common or fresh gas outlet. Open the O2 cylinder; turn the flow meter to 1 L/min and check to see that the ball or bobbin is rotating freely. Occlude the fresh gas outlet with your hand or a plug. The flow meter ball or bobbin should fall to at least 500 mL/min. Failure to fall is indicative of a leak.
  9. What are the common areas where leaks may be found
    with this test?
    Joints
  10. Acetylpromazine
    • Yellow liquid, comes in 2mg/ml and 10mg/ml (2mg usually used in SA – CHECK!)
    • Sedative
    • Causes blood vessels to dilate, leading to increased heart rate and possible low blood
    • pressure
    • Lower dose rate per kg required in giant breeds
    • Use with extreme care in very young, very old, sick especially dehydrated
    • Usewith care in brachycephalics (e.g. Bulldogs) as can cause airway tissue to droop
    • Starts to work in about 20-40minutes, maximum effect at 45 minutes, lasts for 4-6hours
  11. Ketamine and Diazepam mixture

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