Module 9 - Ventilation Flashcards
When might ventilation be needed?
Airway problems Pneumothorax Acute lung injury Neurological problems Muscle dysfunction COPD
Explain the difference between negative and positive pressuer ventilation
——Negative
- Negative pressure outisde of the body, negative plural, lower alveolar pressure
Advantage is that people can still eat and talk and that it almost completely mimicks the normal breathing , pressure curve
- —- Positive pressure ventilation
- Usually intubated, has a completely different curve
- Advantage is that it is very effective, also with a pneumothorax
- Disadvantage is that people cannot eat and talk and that people often need sedation
Indicate the main components of a ventilator
High pressure oxygen and air from wall suppliers
Gasses are then mized
then the valve system makes sure that gas is delivered
humidifier is added so that the lungs will not be too damaged
Control system regulates the gas delivery
Explain the difference between pressure and volume ventilation
Volume ventilation is volume and flow controlled
Pressure ventilation is pressure controlled
Which ventilator setting is automaticallu adjusted?
Tidal volume and respiratory rate
What is measured continuously?
Target minute volume, weight, height, gender, PEEP-level, maximum pressurelimit, sensitivity of trigger
Explain the three types of triggering
- time triggered (mandatory ventilation)
- patient triggered (assisted ventilation)
- pressure or flow triggered
Explain control mechanism:
- volume controlled, usually constant flow pressure variable
- pressure controlled, constant pressure, variable volume
Explain cycling:
volume, flow, pressure cyclig.
What is PEEP
PEEP is positive end-expiratory pressure
PEEP pressure is important because it increases the gas exchange surface of the lungs
Name state of the art techniques in mechanical ventilation
Adaptive support ventilation intellivent PRICO triggering systems smart cuffs
