You must be logged in to vote!
meningitis
Increased blood HCO3 could have easily been interpreted as increased blood pH aswell. FOllowing your explanation, since the pt had acidosis, the increased HCO3 will just make it a normal pH.
Another way to think of the question is: if there is decreased exhalation due to COPD --> increased CO2 --> increased CO2 transported in blood by entering the RBC's with Carbonic Anhydrase and HCO3 is released into blood stream. So increased CO2 -> increased HCO3 seeing as this type of CO2 transport is 70% of total CO2 content in blood.
+27
drmohandes
I thought you could never fully compensate, so your pH will never normalize.
Primary problem = respiratory acidosis โ pH low. Compensatory metabolic alkalosis will increase blood HCO3-, but not enough to normalize pH, it will just be 'less' low, but still an acidosis.
+7
mtkilimanjaro
I also think decreased blood PCO2 and increased blood pH are very similar (less CO2 in the blood means less acidic, pH could go up) therefore I ruled both of them out just from that
+1
brise
Aka this is the Bohr effect!
+2
You must be logged in to vote!
You must be logged in to vote!
wfma888
right- you will increase excretion of protons which will LOWER the pH!
+2
an1
โ urine excretion of HCO3 (represents the alkaline pH/ higher pH) and โ urine pH are the same thing. Yes, you may wonder now why the โ blood HCO3 didn't cause an alkalosis but that's because the PRIMARY effect was the retention of CO2 leading to decreased blood pH
+
an1
HCO3 is alkaline compared to H is what I meant to say ^
+
You must be logged in to vote!
You must be logged in to vote!
submitted by โarmymed88(49)
emphysema leads to CO2 trapping leading to increase paCO2 in the blood, which gives you a respiratory acidosis Proper renal compensation will increase bicard reabs and decrease excretion- giving you increased bicarb in the blood