Endoscopy / ECG Flashcards
What does ECG stand for?
Electrical Activity Graph
What letters does a normal ECG trace have
PR Intervals
QRS intervals
QT intervals
What 3 depolarisations fields does an ECG have?
Atrial Depolarisation
Ventricular Depolarisation
Ventricular Repolarisation
Where do the leads attach to on an animal?
Green / White leads go on the legs lying on the mat
Green and red go on the hind legs
What is the most commonly used lead?
Lead 11
What do you need to perform a good ECG
- Good contact electrodes to skin
- Some units need to be grounded
- Insulate patient from the surroundings
- Set sensitivity 1mv=1cm height
- Set speed 25mm/ sec or 50mm/ sec (faster HR = faster speeds)
What common artifact obsures the diagnostic trace?
Respiratory or movement
How to reduce artifacts from patients
- Keep patient calm
- Place hand over thorax
- Hold mouth close
- Towels placed between legs to avoid movement
- Ensure patient is comfortable
What does an electrical artifact?
60hz hum from the mains supply - obscures the P wave
What are ways to reduce electrical artefacts
- clean clips
- electrodes have good contact to the patient
- Clips dont touch the ground or other things
- ECG is well grounded
- Insulate patient from surroundings
What are two types of endoscopes?
Rigid: Metal tube contains glass rods or lenses that carry uninterrupted image back
Flexible: Umbilical cord that contains flexible bundles of glass fibres that transmit the light image or a video chip on the end of the umbilicus transmits the electrical image back
What is 1 advantage and 1 disadvantage of a rigid endoscope
Advantage - Narrow diameter for small sites
Disadvantage - cannot move into twisty places
What are the basic equipment maintenance for endoscopes
- clean immediately
- follow manufactures instructions
- Clean with 70% alcohol
- After aspirating disinfect through the umbilicus
what is the role of the technician in endoscopy
- Organise the equipment
- Prepare patient
- Educate owner
- Procuring / packaging biopsy samples
