Respiratory alkalosis: Difference between revisions

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==Background==
==Background==
*Cause = hyperventilation
*May lead to hypocalcemia, hypokalemia


==DDX==
==Clinical Features==
#Asthma
*Hyperventilation
#PE
#DKA
#Anxiety
#Hypoxia
#Fever
#Hyperthyroid
#Sympathomimetics
#ASA OD
#Progesterone
#Liver dz


==Source ==
==Differential Diagnosis==
Tintinalli
*[[Asthma]]
*[[PE]]
*[[DKA]]
*[[Anxiety]]
*[[Hypoxia]]
*early [[Sepsis]]/fever/[[Pneumonia]]
*[[Hyperthyroid]]
*[[Sympathomimetics]]
*[[Aspirin (Salicylate) Toxicity]]
*Progesterone/[[pregnancy]]
*[[hepatic failure|Liver disease]]
*[[CVA]] or other central cause


==Evaluation==
*alkalemia = pH >7.42
*respiratory alkalosis = pCO2 <38
*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
==Managment==
==See Also==
*[[Acid-base disorders]]
==References==
<references/>
[[Category:FEN]]
[[Category:FEN]]
[[Category:Pulm]]
[[Category:Pulmonary]]
[[Category:Toxicology]]

Latest revision as of 16:43, 29 September 2019

Background

Clinical Features

  • Hyperventilation

Differential Diagnosis

Evaluation

  • alkalemia = pH >7.42
  • respiratory alkalosis = pCO2 <38
  • 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

Managment

See Also

References