Respiratory alkalosis: Difference between revisions

Revision as of 20:30, 2 August 2011

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

KAJI 2011 Tintinalli, Kaji 2011

Authors:

@@ Line 1: / Line 1: @@
 ==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==
@@ Line 9: / Line 16: @@
 #Anxiety
 #Hypoxia
-#Fever
+#early sepsis/fever/pneumonia
 #Hyperthyroid
 #Sympathomimetics
 #[[Aspirin (Salicylate) Toxicity]]
-#Progesterone
+#Progesterone/pregnancy
 #Liver dz
+#CVA or other central cause
 ==Source ==
-Tintinalli
+KAJI 2011
+Tintinalli, Kaji 2011
 [[Category:FEN]]
 [[Category:Pulm]]
+[[Category:Tox]]