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Acid Base Disorders - Formulas for appropriate metabolic and respiratory compensation

- Dr Amith Sreedharan - Consultant
Acid Base Disorders ... - Formulas for ... and respiratory ... compensation ... #Metabolic #Acidosis
Summary of metabolic compensation for respiratory acid-base disorders
#Diagnosis #Nephro #Respiratory #Acidosis #Alkalosis #Metabolic #Compensation #Formulas #Curbsiders
respiratory acid-base ... disorders #Diagnosis ... #Acidosis #Alkalosis ... #Metabolic #Compensation ... #Formulas #Curbsiders
Approach to Acid Base Disorders - Evaluation and Differential Diagnosis
1) Start with the Anion Gap (AG).
2)
Now, look at the gas ... the appropriate compensation ... done by using formulas ... Metabolic Acidosis ... Metabolic Acidosis
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Acid Base Disorders ... Respiratory or Metabolic ... • Respiratory compensation ... #AcidBase #disorders ... bloodgas #Acid #Base
Acid-Base Disorders - Differential Diagnosis Algorithm
Acidemia (pH < 7.35)
 • Metabolic Acidosis (HCO3 < 24mmol/L) CO2
Acid-Base Disorders ... pH < 7.35) • Metabolic ... Acidosis (HCO3 ... Acidosis (pCO2 ... #Causes #Compensation
Blood Gas (ABG) Interpretation and Acid-Base Pathology
1- Does the patient have an acidosis or an alkalosis?
Blood Gas (ABG) ... Interpretation and Acid-Base ... more work = ANION GAP ... AmyChung #AcidBase #ABG ... #Metabolic #Acidosis
Acid-Base Disorders - Expected Compensation Equations

Metabolic Acidosis:
 • pCO2 = 1.5 x HCO3 + 8 ±
Acid-Base Disorders ... - Expected Compensation ... ± 2 (Winter’s formula ... #Compensation # ... Metabolic #Respiratory
Acid Base Disorders Worksheet

Step 1: Gather the necessary data (Na+, CI-, HCO3-, PH, pCO2). Preferably, all
Acid Base Disorders ... patient's alkalosis is metabolic ... is respiratory; ... is metabolic Step ... by failure of compensation