Ventiliation
- Created by: Caroline Malik
- Created on: 20-11-19 09:03
View mindmap
- Ventilators
- Features
- SImple to use
- portable
- robust
- easy to use and sterilise.HME filters
- economical to purchase and use
- versitile in supplying tidal volumes (merlin can provide this)
- Variable I:E rations
- able to deliver any gas/vapour mixture desired
- have facility for humidification of gases and nebulisation of drugs and water
- addition of PEEP should be possilbe.(Positive end expiratory pressure) this prevents alvelor collapse. Has haemodynamic consequenses so not always used.
- should have alarms for disconnection, high airway pressure and power failure
- Classification
- Method of cycling (how changes from inspiration to expiration)Volume or pressure
- Expiratory cycling (how the ventilator changes from expiratory to inspiratory) most are timed cycled
- method of operation (flow or pressure generated)
- electrical or pneumatic
- mechanical thumbs (basic types of ventilators)
- bag in the bottle (has bellows in a perspex box - good one to use if first time)
- minute volume dividers (portable)
- intermittent blowers (sends a jet of gas down airway)
- Settings
- breathing rate 10-20bpm
- Tidal volume (inspiratory) 10 - 15ml/kg10 - larger animals 15 - smaller animals
- I:E ratio 1:3
- Peak inspiratory pressure20cm H2O dogs12cm H2O cats
- Complications
- hypotension
- increased
- depth of anaesthesia
- positive pressure in the chest
- decreased
- venous return to the heart
- cardiac output
- increased
- ventilator induced lung injury
- Volutrauma
- too much tidal volume
- barotrauma
- too much pressure
- Volutrauma
- Untitled
- Renal side effects
- decreased cardiac output increases renin, angiotensin and aldosterone production
- thus fluid retention tends to occur
- tend to see reduced urine output
- thus fluid retention tends to occur
- decreased cardiac output increases renin, angiotensin and aldosterone production
- altering O2 and CO2 tensions
- overzelous IPPV
- hypocapnia
- inefficient IPPV
- produce hypercapnia
- O2 toxicity in ICU ventilation
- overzelous IPPV
- hypotension
- Features
Comments
No comments have yet been made