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Wednesday, December 29, 2010

Acid-Base Tutorial: Easy way to Remember: ROME

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To visually understand Acid Base Balance animation.
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RESPIRATORY ACIDOSIS:
pH is down
PCO2 is up

METABOLIC ACIDOSIS:
pH is down
HCO3 is down

RESPIRATORY ALKALOSIS:
pH is up
PCO2 is down

METABOLIC ALKALOSIS:
pH is up
HCO3 is up

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75 Things you should know before taking NCLEX

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ABG Arterial Blood Gas Made Easy

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{increase of pH is alkalosis}

{decrease of pH is acidosis}

Respiratory = CO2

Metabolic ( kidneys ) = HCO3

HCO3 ( bicarbonate ) follows pH. If pH goes up so does HCO3.

CO2 increase, pH decrease = respiratory acidosis

CO2 decrease, pH increase = respiratory alkalosis

HCO3 increase, pH increase = metabolic alkalosis

HCO3 decrease, pH decrease = metabolic acidosis
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Passing Nclex Exam

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1:The easy way is look at the ph


Is it alkalosis or acidosis?

2:Then look at CO2 and HCO3

Which one agrees with the ph? (if ph is acidotic, co2 is high opposite for alkalotic) (if ph is acidotic HCO3 will be low opposite for alkalosis)

The one that agrees with the ph is the type of problem you have (if the CO2 is high and ph is acidotic, then you have respiratory acidosis. if the HCO3 is low and the ph is acidotic, you have metabolic acidosis, opposites for alkalosis)

3. then look at the other lab (if the problem is respiratory, look at the HCO3. If the problem is metabolic, look at the CO2)

Is it in the normal range? If so the problem is uncompensated.

Does is agree with the ph? (Both CO2 and HCO3 levels cause acidosis) then the problem is respiratory and metabolic acidosis or alcalosis and is uncompensated.

Or does it disagree with the ph? (ex. ph is acidic, but HCO3 is high or CO2 is low) if so, the problem is partially compensated.

So you can have uncompensated, partially compensated or even fully compensated (where the HCO3 and CO2 are out of wack, but ph is normal) respiratory or metabolic acidosis or alkalosis.

Basically you need three things:

Acidosis or alkalosis? What is causing it (respiratory or metabolic)? and is the other system trying to fix it (by compensating).
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Notes for Nclex

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What to memorize for NCLEX Exam?

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Nclex Tips

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You Can Learn ABGs in 3 Easy Steps
http://www.chipkalee.com/abgs.html










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