A-a gradiatian calculation is a calculation of what? - Answer level of hypoxia
, PA02-Pa02
A-a gradiant varies with age, calculation - Answer 2.5 + 0.21 x age in years
5 causes of hypoxemia - Answer VQ mismatch
shunt
PNA, interstitial lung dz
hypoventilation
high altitude
clinical symptoms that require intubation - Answer neuromuscular depression or failure.
spinal cord injuries
guillain barre syndrome
trauma-spinal cord injuries, phrenic nerve injury
myasthenia gravis
shock
status asthmaticus
sustained apnea of any kind
indications for weaning from vent - Answer underlying process that required the vent is corrected
maintaining oxygen status
no presser support- levophed, epinephrine, etc.
Pa02 >80, FI02 of 0.5, and PEEP <8.0 cm H20
prior to seperation from the vent proceed with this ...... to determine if pt is able to dc vent - Answer
trial of spontaneous breathing
Volume targeted assist control (AC) mode - Answer the clinician determines tidal volume and rate/ pt
can still breath over the vent. example: pt gets RR of 12 but has an additional 2 breaths on their own, pt
will still breathe 14 breaths/min. tidal volume is based on the vent.
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