acid base balance Flashcards

1
Q

what overcomes reduction of pH in body?

A

rbcs
buffers in bf
brain liver kidney

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2
Q

pH =

A

6.1 + log ( HCO3/(0.03 x PCO2))

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3
Q

anion gap represents what?

A

unmeasured anions = lactate acetoacetate and albumin

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4
Q

AG equation without K ref range

A

8-16 mmol / L

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5
Q

AG equation with K ref range

A

12-20 mmol / L

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6
Q

AG equation

A

( Na + K ) - ( Cl + HCO3)

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7
Q

what makes up 1-2 % of total Hb in blood?

A

COHb and MetHb

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8
Q

what is the ketone body that is in greatest proportion in the blood?

A

beta hydroxybutyrate

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9
Q

whats an iatrogenic source of base?

A

HCO3-

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10
Q

what is the buffer system in highest concentration in the blood plasma?

A

HCO3 CO2 –> carbonic acid

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11
Q

whats an imp intracellular buffer?

A

phosphate

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12
Q

how does kidney respond to acidemia?

A

production of ammonia

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13
Q

if anion gap >20 then

A

very likelihood primary metabolic acidosis regardless of pH and HCO3

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14
Q

excess ag equation

A

(AG - normal AG ) + [ HCO3]
if sum is greater than upper limit of normal [HCO3] then metabolic alkalosis if sum less than lower limit of normal [HCO3] metabolic acidosis ref range of [HCO3] = 22-29

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