Support and Monitoring Flashcards
Describe a monitoring record
- Legal document
- Record of drugs, patient risk, events occuring, and recovert etc
What are 5 factors that you can monitor for anaesthesia
- Muscle relaxation
- Eye rotation and pupil dilation
- CRT
- Core temp
- Anal tone
Describe pulmonary monitoring
Breathing rate, effort and rhythm
(observe bag and chest)
Spirometry = reliable
What does CaO2 measure?
O2 content of the blood
What methods can be used to assess oxygen delivery?
CaO2, MAP, Respiration and CV function
Describe pulse oximetry and what it can tell us
- Infra red transmitter and reciever
- Measures absorption of light
- Oxygenised haem absorbs more IR and red light
- Correlate % abs with % oxygenated Haem
Describe two ways in which pulse can be assessed
- Peripheral pulse monitoring
- Femoral, dorsal, mediolateral, lingual etc
What methods can be used to measure Arterial Blood Pressure
Non invasive, invasive, doppler
Describe Doppler assessment
- Prezoelectric crystal placed over artery
- Cuff placed proximally to this
- Audible and visible reading
Describe non invasive blood pressure monitoring
- Expensive and unreliable in cats and small dogs
Describe invasive blood pressure monitoring
- Artery cannulation
- Gives systolic, mean and diastolic Blood pressure
- Can use auricular, dorsal pedal and facial arteries
Describe central venous pressure monitoring
- Jugular catheter
- Indicates filling pressure of the heart
- Increase in CVP = failing heart/volume overload
- Decrease in CVP= haemorrhage, blood pooling, incomplete fluid therapy
Describe capnography
- Measures CO2 concentration in the breath and plots CO2/time
Measured by : Infrared mass spec and main and side stream sampling - Assumes that alveoplar CO2= arterial CO2
What can an increased CO2 reading during anaesthesia
- Rebreathing = increase FGF rate)
- Exhaustion of soda lime
- Pyroxia
What can be taken from a reduced CO2 reading during anaesthesia?
Cardiac arrest (first sign) Misintubation
