Anaesthesia Flashcards
(12 cards)
Ayres T piece 01
The veterinary surgeon wants to anaesthetise a cat for ovariohysterectomy.
Using the equipment available, select, assemble and attache the most appropriate anaesthetic breathing system for this patient.
As this is the first induction of the day, you will also need to check that the anaesthetic machine is ready for use. Explain to the examiner the checks that you are making.
for this patient you are required to calculate:
a. Tidal volume (xml/kg)
b. Minute volume
c. Fresh gas flow per minutes
The patient has a pre-anaesthetic respiration rate of x breaths per minute
- Select modified Ayres t-Piece breathing system
- Select low pressure adjustable pressure limiting (APL) valve
- Select narrow inspiratory tubing
- Select 0.5 litre blind-ended reservoir bag
- Select T-shaped connector
- Attach to anaesthetic machine
- Attached scavenging to APL valve
- Attach scavenging to fluosorber
- Correct breathing system assembled correctly
- Breathing system attached correctly to machine and scavenging
- Open the oxygen cylinder valve (slowly anticlockwise)
- check the registered quantity of oxygen on the pressure dial
- Turn on the oxygen flowmeter control to check smooth function
- Turn off oxygen flowmeter control
- press emergency oxygen flush button
- attach ‘in-use’ label to oxygen cylinder
- check the vaporiser percentage dial to endure it turns easily
- Check the level of the colatile anaesthtic agent in the vaporiser and take appropriate action
- check for leaks in the breathing system
- fully open APL valve and leave open
- Leave anaesthetic machine ready for use (i.e. oxygen should be switched on and anaesthetic breathing system attached
- Tidal volume calculation correct
- minute volume calculation correct
- fresh has flow calculation correct
- correct units of measurement used for final answer
What is the circuit factor for the Ayres t-piece?
2.5 - 3
What is the calculation for tidal volume?
<10kg - 15ml/kg/min (15xbw)
>10kg - 10ml/kg/min (10xbw)
What is the calculation for minute volume?
Tidal volume (Vt) x Respiration rate (RR)
What is the calculation for the fresh gas flow rate?
Minute volume (Vm) x Circuit factor (cf)
What is the circuit factor for a Bain?
2.5 - 3
What is the circuit factor for a Magill?
1-1.5
What is the circuit factor for the lack?
1-1.5
What is the fresh gas flow rate for the mini lack?
200ml/kg/min but not less than 1L/min
Bain 02
A patient has been admitted with a suspected ruptured diaphragm. The veterinary surgeon wants to anaesthetise the patient and may require you to provide assisted ventilation during anaesthesia.
Using the equipment available, select, assemble and attach the most appropriate anaesthetic breathing system for this patient.
For this patient you are required to calculate:
A. Tidal volume (xml/kg)
B. Minute volume
C. Fresh gas flow rate
The patient has a pre- anaesthetic respiration rate x breaths per minute
Show all your workings including units
- Select coaxial Bain anaesthetic breathing system
- Select adjustable pressure limiting (APL) valve
- Select coaxial tubing
- select reservoir bag
- Attach to anaesthetic machine
- Attach scavenging to APL valve
- Attach scavenging to flurosorber
- Place flurosorber below level of the patient
- Check for leaks in the breathing system
- Fully open APL valve and leave open
- Correct breathing system assembled correctly
- Breathing system attached correctly to machine and scavenging
- Open the oxygen cylinder valve (slowly anti-clockwise)
- Check the registered quantity of oxygen on the pressure dial
- Turn on the oxygen flow meter control to check smooth function
- Turn off oxygen flow meter
- Press emergency oxygen flush button
- Attach ‘in-use’ label to oxygen cylinder
- Check the vaporiser percentage dial to ensure it turns easily
- Check the level of the volatile anaesthetic agent in the vaporiser and take appropriate action
- Leave anaesthetic machine ready for use (i.e. oxygen should be switched on and anaesthetic breathing system attached)
- Tidal volume calculation correct
- Minute volume calculation correct
- Fresh gas flow calculation correct
- Correct units of measurement used for final answer
Lack 03
The veterinary surgeon wants to anaesthetised a patient for radiography and has requested that a parallel lack anaesthetic system is used.
Using the equipment available, select, assemble and attach the anaesthetic breathing system for this patient.
As this is the first induction of the day, you will also need to check that the anaesthetic machine is ready for use. Explain to the examiner the checks that you are making.
For this patient you are required to calculate:
A. Tidal volume (xml/kg)
B. Minute volume
C. Fresh gas flow per minute
The patient has a pre-anaesthetic respiration rate x breaths per minute
Show all you working including units
- Select lack anaesthetic breathing system
- Select wide-bore tubing x 2 and y shaped connector
- Select reservoir bag
- Select APL valve
- Attach to anaesthetic machine
- Attach scavenging to APL valve
- Attach scavenging to fluosorber
- Place fluosorber below level of the patient
- Correct breathing system assembled correctly
- Breathing system attached correctly to machine and scavenging
- Open the oxygen cylinder valve (slowly anti-clockwise)
- Check the registers quantity of oxygen on the pressure dial
- Turn on the oxygen flowmeter control to check smooth function
- Turn off oxygen flowmeter control
- Press emergency flush button
- Attach ‘in-use’ label to oxygen cylinder
- Check the vaporiser percentage dial to ensure it turns easily
- Check the level of the volatile anaesthetic agent in the vaporiser and take appropriate action
- Check for leaks in the breathing system
- Fully open APL valve and leave open
- Leave anaesthetic machine ready for use (i.e. oxygen should be switched on, volatile agent checked and anaesthetic breathing system attached).
- Tidal volume calculation correct
- Minute volume calculation correct
- Fresh gas flow calculation correct
- Correct units of measurement used for final answer
Mini Lack 04
The veterinary surgeon wants to anaesthetise a dog for dental treatment.
Using the equipment available, select., assemble and attach the most appropriate anaesthetic breathing system for this patient.
Select and prepare the most appropriate endotracheal tube.
As this is the first induction of the day, you will also need to check that the anaesthetic machine is ready to use. Explain to the examiner the checks that you are making.
For this patient you are required to calculate:
A. Tidal volume (15ml/kg)
B. Minute volume
C. Fresh gas flow per minute
Set the oxygen flowmeter to show the fresh gas flow setting for this patient. The patient has a pre-anaesthetic respiration rate 20 breaths per minute.
Show all your workings including units.
- Select mini lack anaesthetic breathing system
- Attach to anaesthetic machine
- Attaches scavenging to APL valve
- Attach scavenging to fluosorber
- Place fluosorber below level of the patient
- Breathing system attached correctly to machine and scavenging
- Select cuffed endotracheal tube
- Check that the lumen of the endotracheal tube is patient
- Inflate the cuff and check for leaks
- Deflate the cuff
- Open the oxygen cylinder valve (slowly anticlockwise)
- Check the registered quantity of oxygen on the pressure dial
- Turn on the oxygen flowmeter control to check smooth function
- Turn off oxygen flowmeter
- Press emergency flush button
- Attach ‘in-use’ label to oxygen cylinder
- Check the vaporiser percentage dial to ensure it turns easily
- Check the level of the volatile anaesthetic agent in the vaporiser and take appropriate action
- Check for leaks in the breathing system
- Fully open APL value and leave open
- Leave anaesthetic machine ready for use (i.e. oxygen should be switched on and anaesthetic breathing system attached).
- Tidal volume calculation correct
- Minute volume calculation correct
- Fresh gas calculation correct
- Correct units of measurement used for final answer
- Correctly set the fresh gas flow using the oxygen flowmeter
