Session 6 - Get me an infusion of NaHCO3, stat! And some fries. Flashcards Preview

Semester 3 - Urinary > Session 6 - Get me an infusion of NaHCO3, stat! And some fries. > Flashcards

Flashcards in Session 6 - Get me an infusion of NaHCO3, stat! And some fries. Deck (9)
Loading flashcards...
1

The very serious business of recognising respiratory and metabolic acidaemia and alkalosis

And I mean serious.

2

pH - D
pCO2 - U
HCO3- - -/-
pO2 - D

D - Down
U - Up
-/- - No change

• Hypoventilation means raised pCO2
• Hyper capnia -> Low pH
• HCO3- unchanged
• Respiratory acidaemia

3

pH - D/-
pCO2 - U
HCO3- - U
PO2 - D

• Compensated (partially or fully) respiratory acidaemia
• Kidneys have increased HCO3-
• Increases buffering of H+ ions caused by increased pCO2

4

pH - U
pCO2 - D
HCO3- - -/-
PO2 - -/U

• Respiratory alkalaemia
• Hyperventilation has lower pCO2
• Hypocapnia -> High pH
• HCO3- unchanged

5

pH - U
pCO2 - D
HCO3- - D
PO2 - U

• Compensated (partially or fully) respiratory alkalemia
• Kidneys have decreased HCO3-
• Decreased buffering of H+ ions

6

pH - D
pCO2 - -/-
HCO3- - D
PO2 - -/-
Anion Gap - U

• Metabolic acidosis
• Decreased HCO3- -> Less buffering of H+ ions
Increase in unmeasured anions

7

pH - D
pCO2 - D
HCO3- - D
PO2 - U
Anion gap - U

• Compensated (partially or fully) metabolic acidosis
• Increased respiratory rate -> Hypocapnia -> Raised pH
• Anion gap still increased

8

pH - U
pCO2 - -/-
HCO3- - U
PO2 - -/-

• Metabolic alkalosis

9

pH - U
pCO2 - U
HCO3- - U
PO2 -D

• Compensated metabolic alkalosis
• Decreased respiratory rate -> Hypercapnia
• Decreased pH
Can only partially compensatte