The machine - anaesthetics Flashcards
The machine
A complex collection of equipment.
- Gas mixing and delivery system
- Anaesthetic breathing system and ventilator
- Monitors.
Rour essential functions of the machine (PAEM)
Pam Ate Edible Mangos
- Provides oxygen
- Accurately mixes anaesthetic gases
- Enables patient ventilation
- Minimises anaesthesia related risks to patients and staff.
Main components of anaesthetic machine (GEVSCB):
General Elephants Vape Sitting at CurBside
- Gas supply and flow of gases through the anaesthetic machine
- Electrical system
- Vaporisers
- Scavenging system
- C02 absorber
- Breathing circuit
Flowmeters function
Measures the flow of gas through the system.
- controlled by a knob which can be adjusted to increase or decrease flow.
Check valves (common gas outlet)
A one way valve preventing back flow of gas to the atmosphere or between cylinders on the machine.
Oxygen flush valve
Used when more oxygen is to be added to the rebreathing bag
- allows for the opening of a direct connection between the pipeline oxygen and the oxygen pressure regulator to deliver 35-70L/ minute of pure oxygen at a pressure of 45-60 PSI
Scavenger system
Prevent contamination of the OR with anaesthesia gas waste.
- Use of anaesthetic gases such as nitrous oxide and volatile agents, within the enclosed environment of the OT may lead to chronic exposure with staff.
three checks
- Level 1 check is a detailed check performed by trained service personnel, of all systems before being placed into use. This applies to all new systems, as well as all systems after servicing or repair.
- Level 2 check should be performed at the start of each anaesthetic list.
- Level 3 check should be performed before commencing anaesthesia for each patient.
General anaesthesia
produces a drug-induced state where the pt will not respond to any stimuli, including pain.
Local anaesthesia
injection of local anaesthetic near the surgical site and is used for minor surgery. Used alone or in combination with sedation or general.
Regional anaesthesia
includes nerve blocks and spinal blocks. Local is injected in the vicinity of major nerve bundles that supply a body area such as the shoulder.
procedural anaesthesia
used for procedures where general is nt needed. Allows pt to tolerate procedures that may otherwise be painful.
conscious anaesthesia
medication-induced state reduces the pt level of consciousness. Sedated pt doesn’t feel pain but can respond to verbal commands or touch.
analgesia anaesthesia
pt is given meds that act locally or generally to stop them from experiencing pain.
Principles of anaesthetic safety
Ideal and safe pharmacological drugs used for anaesthesia are ones, which may be easily adjusted to procedure:
- Adequate unconscious state
- Muscle relaxation
- Analgesia as required or at the discretion of the anaesthetist.
