Urinary Tract and Renal Flashcards
Anion gap
AG = Na - (Cl + HCO3)
Normal ABG ph
7.35 to 7.45
Normal bicarb
22-26
Normal PCO2
35-45
In metabolic alkalosis there is excess
HCO3
In metabolic acidosis there is decrease in
HCO3
In respiratory acidosis there is increase in
CO2
In respiratory alkalosis there is decrease in
CO2
If HCO3 is high as in metabolic alkalosis, CO2 should compensate by
Increasing by 0.6 for every 1
If PCO2 decreases as in respiratory alkalosis, what should bicarb do?
Decreased by 2 if acute, 6 if chronic
If the CO2 increases as in respiratory acidosis, the bicarb should compensate by
Increasing by 1 for acute, 4-5 for chronic
DDX prerenal acute kidney injury
Hypovolemia, low effective circulating volume, NSAIDs
Renal causes of AKI
Renal vascular disease, glomerular disease, tubulointerstital disease
Post renal cause of AKI
Obstructive uropathy
Most common cause of urinary tract obstruction in newborn male
Posterior urethral valves
In utero, impaired fetal urination can lead to
Oligohydramnois and subsequent lung hypoplasia
US findings consistent with PUV
Dilated bladder with bilateral hydroureters and hydronephrosis