8 results
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Acid Base Disorders ... Respiratory or Metabolic ... (AG) = {Na - (Cl ... Classically” noted with pulmonary ... #AcidBase #disorders
Acid-Base Disorders - Differential Diagnosis Algorithm
Acidemia (pH < 7.35)
 • Metabolic Acidosis (HCO3 < 24mmol/L) CO2
Acid-Base Disorders ... 7.35) • Metabolic ... > 7.45) • Metabolic ... Alkalosis (HCO3 ... Alkalosis (pCO2
Acid Base and Blood Gas Analysis
1. pH - What’s the primary disturbance?
2. pCO2 - What’s the
Gas Analysis 1. pH ... Respiratory Acidosis ... acidbase #workup #algorithm ... #metabolic #respiratory ... #bloodgas #interpretation
Approach to Acid Base Disorders - Evaluation and Differential Diagnosis
1) Start with the Anion Gap (AG).
2)
Approach to Acid Base Disorders ... adding ~0.05 to pH ... of H+, Renal loss ... retention • Respiratory ... Ventilation • Respiratory
Acid Base Disorders Worksheet

Step 1: Gather the necessary data (Na+, CI-, HCO3-, PH, pCO2). Preferably, all
is metabolic; If ... is respiratory ... patient's acidosis is respiratory ... patient's acidosis is metabolic ... anion gap (Na - Cl
Approach to Elevated Bicarbonate (HCO3)
Risk Factors for Hypercapnea? (Hx of COPD, OSA, sedative use, CNS/muscular disorders?)
(+)
, CNS/muscular disorders ... ) Evaluate for Respiratory ... Alkalosis Urine ... Contraction Urine Cl ... #alkalosis #algorithm
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
resistance • Metabolic ... alkalosis • Familial ... Inhibitors of Na+K+2Cl ... Torsemide) • Acute pulmonary ... specific bleeding disorders
#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
#ICUCard RENAL ... (Na U(U/P Cr) Renal ... (HCO3d-HCO3m) Metabolic ... Alkalosis ТНСО3 ... Alkalosis IPCO2