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20 Cards in this Set

  • Front
  • Back
5 CAUSES OF hypoxemia
2)v/q mismatch
in the alert patient, a v/q mismatch is caused by
requirements for NIV
patient must be homedynamically stable for NIV. IF patient is hypoxemic and hypotensive, they need mechanical ventilation
ways intubation can be verified
1)breath sounds
2)anterior chest rise with bagging
4)vapor trail
5)increasing spo2
patients with CHF may have wheeze
because of the engorgement of the vessels in the pulmonary vascular system
a left mainstem pneumothorax will sound
typmanic on the left, normal on the right
a right mainstem intubation will be
normal on the right, dull on the left
volume assured pressure support
breath starts out pressure supported, but changes to volume at the end of the breath, if the machine determines that significant volume will not be delivered by pressure support alone
how volume assured pressure support determines that volume is inadequate
by extrapolating based on flow
prvc cycles into exhalation by ------
AGITATed patient on prvc
increases their WOB and gets more delta p
if delta p is increasing on prvc
the patient's condition is worsening, or the patient's inspiratory effort has increased
pressure targeted modes can be set with a constant i time or
a constant i:e ratio
if the i:e ratio is set
making rate changes may mean that the patient has been saddled with an i time he cannot synchorinize with
applying PEEP on a ventilator
1)increases frc
2) PREVENTS or reverses alveolar collapse
3)IMPROVES gas exchange
4) moves the vt on the compliance curve
5)increases MAP
ventilators with floating exhalation valves
allow for spontaneous breathing whether the patient is set in bilevel or not
volume control in the servo I
has a pause time set in order to reach optimal levels of MAP
some patients in heart failure
may benefit from the decreased venous return(E.g, decreased preload) from the vent
hallmark of diaphragmatic paralysis is
SOB in the supine position
causs of neuromuscular weakness
2)Electrolyte imbalance-po4 less than 1. low or high mg,ca, or k.
3)critical illness polyneuropathy
4)high c spine injury