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26 Cards in this Set

  • Front
  • Back
the amount of air required to seal an ET tube cuff is reflected by the cuff pressure, which is usually maintained at less than
20 mm Hg
Cuffs are inflated with a volume of air that is
high enough to seal the trachea while exerting the lowest possible pressure on the tracheal wall. Therefore cuff pressures greater than 18 to 20 mm Hg impair circulation to the tracheal mucosa and necrosis may develop.
time cycled vent
terminates when a preset inspiratory time has elapsed
flow-cycled vent
triggered to stop when a preset flow rate has been achieved
volume-cycled vent
delivers a preset tidal volume of inspired gas
pressure-cycled vent
delivers a volume of gas to the airway using positive pressure during inspiration
volume-triggered inhalation
occurs when the ventilator completes the breath to maximize inhaled gas
flow-triggered inhalation
occurs when the client can initiate a breath
negative pressure inhalation
triggered by the initial negative pressure that begins inspiration
time-triggered inhalation
used to manage clients who cannot breathe on their own
applied w/spontaneous respirations to keep aveoli open
positive pressure applied during spontaneous breaths
positive end expiratory pressure
used during mechanical ventilation to keep aveoli open
positive pressure applied at the end of expiration of vent breaths
synchronous intermittent mandatory ventilation
delivers gas at preset tidal volume or pressure allowing pt to breathe spontaneously; vent breaths are synchronized to pt's resp effort
pressure support ventilation
used to augment pt's inspiratory efforts; pt controls rate, inspiratory flow, and tidal volume
volume assured pressure support ventilation
tidal volume is set to ensure pt receives minimum tidal volume w/each pressure support breath
continuous mandatory ventilation
will initiate breath if pt fails to do so within preset time
hyperventilation can occur
rn sets rate (say 10 resps)
the pt will at least get 10 respirations. they can overbreathe that amount which promotes respiratory muscle fatigue
used w/simv to support spontaneous breaths and used in weaning
airway pressure too high alarm
kinked or block tubing; mucus or secretion plug in et tube or airways; client coughing or fighting the vent; inspiratory flow rate too high
manifestations of oxygen toxicity
fatigue, lethargy, weakness, restlessness, n/v
PPV positive pressure ventilation may lead to?
stretch injury in the alveoli an the release of inflammatory mediators. To minimize stretch injury, the lowest possible tidal volume and PEEP should be used
RNDx: impaired oral mucous MB
note: oral MBs can be restored to pink & moist w/in 24 hrs but oral care is an ongoing need
provide oral care q 2 hrs
no etoh or lemon
lubricate lips
brush, not swab client's teeth x2 daily
suction oral secretions from mouth
assess for pressure areas at the corner of the mouth from et tube
hallmark of ARDS
massive inflammatory response by the lungs that increases permeability of the aveolar mb, with resultant fluid movement into the interstitial & aveolar spaces
anatomy of a code: what you need to reach for first is:
bag-valve-mask device w/100% O2
cardiac board or head board
suction setup
intubation equipment
iv line primed w/.9% NaCl or LR
r/t Breathing in a code:
position the pt supine, open his airway, initiate breathing, observe universal precautions
r/t Circulation in a code:
if the pt is pulseless, initiate chest compressions