Respiratory alkalosis: Difference between revisions
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#Anxiety | #Anxiety | ||
#Hypoxia | #Hypoxia | ||
#early | #early [[Sepsis]]/fever/[[Pneumonia]] | ||
#[[Hyperthyroid]] | #[[Hyperthyroid]] | ||
# | #Sympathomimetics | ||
#[[Aspirin (Salicylate) Toxicity]] | #[[Aspirin (Salicylate) Toxicity]] | ||
#Progesterone/pregnancy | #Progesterone/pregnancy | ||
Revision as of 08:18, 18 December 2013
Background
- alkalemia = pH >7.42
- respiratory alkalosis = pCO2 <38
- Cause = hyperventilation
- May lead to Hypocalcemia, Hypokalemia
- Check for a concurrent acid/base disturbance
- always check for an AG
- for every 10mm pCO2 <40, HCO3 expected to decrease by 1-3.5 mEq
- if HCO3 < 24 - (40-pCO2)/10 x 2.5 (+/-1) then there is a superimposed primary metabolic acidosis
- if HCO3 > 24 - (40-pCO2)/10 x 2.5 (+/-1) then there is a primary metabolic alkalosis, or acute respiratory alkalosis without time for metabolic compensation
DDX
- Asthma
- PE
- DKA
- Anxiety
- Hypoxia
- early Sepsis/fever/Pneumonia
- Hyperthyroid
- Sympathomimetics
- Aspirin (Salicylate) Toxicity
- Progesterone/pregnancy
- Liver dz
- CVA or other central cause
See Also
Source
KAJI 2011 Tintinalli, Kaji 2011