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27 Cards in this Set
- Front
- Back
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when H= increases to pH
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decreases
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range for pH
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7.35 - 7.45
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PaO2 range
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80-100mhHg
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PaO2 range elderly
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60-80mmHg
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If PaO2 < 60
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controled interventions
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Panic range for pH
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7.2 - 7.6
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PaCO2 means
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partial presure of CO2 disolved in arterial plasma
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CO2 is an ... that is regulated by the lungs
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acid
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resp acidosis caused by ...
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retention of CO2
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Respiritry alkilosis caused by
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hyperventilation
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metabolic acidosis caused by (2)
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gain of metabolic acids
loss of base |
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how are metabolic acids gained? (4)
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renal faliure
diabetic ketoacidosis lactic acidosis drug overdose |
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how are metabolic basses lost?
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diarhear
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how are metabolic basses gained
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injestion of antacids
excess administration of sodium bicarbonate |
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how are metabolic acids lost? (5)
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Vomiting, nasogastric suctioning, low potasium and/or chloride
diuretics (loss of potasium and or chloride) increased levels of aldosterone |
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HCO3- reflects? (1)
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concentration of sodium bicarbonate in blood
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HCO3- range
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22-26mEq/L
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HCO3- regulated by
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kidneys
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High HCO3- =
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metabolic alkalosis
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low HCO3- =
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metabolic acidosis
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HCO3- .... acids
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neutralises
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three buffer systems
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blood, resp systems and kidneys
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as H+ (hydrogen ion concentration) rises the pH:
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falls
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... combines with .... to form carbonic acid
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HCO3- , H+
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how is carbonic acid (H2CO3) excreted?
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broken down HCO3- , H+
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buffer system mechanism equasion?
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H+ + HCO3- ->
H2CO3 -> H20 + CO2 |
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Steps in ABG interpretation (4)
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evaluate oxygenation
evaluation acid bass status evaluate primary imbalance has a compencation responce taken place? |
