4 results
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
(assumes Room Air ... Right to Left Shunt ... Pulmonary AVMs, Hepatopulmonary ... Disease and more • Diffusion ... Hypoxia #hypoxemia #differential
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
Respiratory Failure - Differential ... VIQ mismatch and shunt ... gravity-dependent gradients ... pulmonary AVMs, hepatopulmonary ... Failure #hypoxia #Differential
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
Hepatopulmonary ... 1) or anatomic shunt ... Arterial blood gas (ABC ... 80mmHg or A-a gradient ... LizzieAbyMD #hepatopulmonary
#ICUCard
RENAL
GFR
90-131
mL/min
((140-age)*Wt)/(72*Cr)
Glomerular Filtration Rate (Cockcroft)
CI Cr
90-131
mL/min
(CrU * volume)/CrS
Creatinine Clearance
FENa
0.0-1.0
%
((U/P Na)/(U/P Cr))*100
Fractional Excretion of Na+
Na req
mEq
(125-Na)*0.6*Wt
Required Sodium
FE Urea
Tubular Potassium Gradient ... 10 T in pCO2 chronic ... 10 - in pCO2 chronic ... 70 mmHg on 100% mask ... A-a Gradient >