Vent 3
Terms
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- PIP
- highest amount of pressure needed to ventilate patient
- Sensitivity
- amount of effort needed to trigger ventilator
- auto peep
- residual pressure in alveoli cannot escape, increase risk of volutrauma and ICP, needs to be corrected
- elder, COPD, infection, ARDS patients
- who is at higher risk for volutrauma?
- Sigh
- deeper breath, not routinely used: prevents atelectasis
- s/s of barotrauma
- high PIP pressures (alarms going off), decreased breath sounds, tracheal shift, sub q crepitus, hypoxemia
- respiratory acidosis
- when would you use PEEP?
- Inspiratory/Expiratory I:E ratio
- 1:2 is normal
- verification of settings, why alarms go off, enables interventions
- why should a nurse know what the vent settings are?
- 700 ml
- avg. tidal volume
- pressure delivered with mechanical respirations/ pressure delivered when patient is spontaneously respiration
- if patient is on a vent, PEEP is _______________ and CPAP is _____________________ (difference b/t PEEP and CPAP)
- to reduce risk of volutrauma by reducing PEAK airway pressure
- why would permissive hypercapnia be used?
- 15ml/kg is traditional order
- typical ordered amount for tidal volume
- nursing interventions for tension pneumo
- remove pt from mechanical vent, bag mask ventilate, call MD, CHEST TUBE
- s/s tension pneumo
- distended neck veins, cyanosis, thorax not symmetrical, respiratory distress SUDDEN, hypoxia and respiratory alkalosis, HYPOTENSION, TACHY >135
- 2300 mls
- normal value for functional residual capacity
- functional residual capacity
- volume of gas remaining in the lungs at normal resting expiration
- auto PEEP has occurred
- pressure value at the end of expiration is higher than expected, what has occurred?
- tension pneumo
- lung completely collapses, pressure enters the affected lung and pushes the trachea to the unaffected side, emergency!
- Fluid in tubing, increased secretions, mucous plug, biting ETT, pneumothorax
- reasons high pressure (PIP) alarms may go off
- PEEP
- setting provides pressure higher than room air with mechanical breaths, keeps airway open at end of expiration, prevents alveoli collapse
- can lead to pneumothorax, tension pneumo, subcutaneous crepitus
- what are dangers of barotrauma/volutrauma