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14 Cards in this Set

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  • Back
How does the cardiopulmonary system compensate for hypoxemia?
1)By increasing ventilation
2)By increasing cardiac output
Respiratory signs of hypoxemia
1)mild-tachypnea, dyspnea, paleness
2)severe-cyanosis, coma, clubbing
Cardiovascular symptoms of hypoxemia
1)Mild-tachycardia, mild hypertension, peripheral vasoconstriction
2)severe--hypertension and eventual hypotension
Neurologic
1)mild-restlessness, disorientation, headaches, lassitude
2)somnolence,confusion,distressed appearance, blurred/tunnel vision, loss of coordination, slow reaction time, manic-depressive activity
Oxygen toxicity symptoms
1)damage to capillary endothelium
2)damage to type one alveolar cells, exudative phase
3) Pulmonary fibrosis and hypertension
FiO2 greater than 0.5
Causes risk of absorption atalectasis
Nasal cannula
1) 2-8 L
2) FiO2 22-45 %
Simple Mask
1) 5-12 L/M
2) 35-50%
Partial Rebreather
1) 6-10 L/M
2)35-60%
Nonrebreather
1) 6-10 L/M
2)55%-70%
Venti mask
1) should be greater than 60 L/M
2)Fi02 24-50%
Factors that INCREASE FiO2 in low flow systems
1) Higher O2 input
2)closed mouth breathing on cannula
3)low inspiratory flow
4)low tidal volume
5)slow RR
6)small minute volume
7)Long inspiratory time
8) High I:E ratio
Factors that DECREASE Fi02 in low flow systems
1) Low O2
2)Open mouth breathing
3)High inspiratory flow
4)High tidal volume
5)Fast RR
6)Large minute ventilation
7)Short inspiratory time
8) Low I:E ratio
Three types of resovoir masks
1)simple mask
2) partial rebreather
3) non rebreather