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Acid Base Disorders - Formulas for appropriate metabolic and respiratory compensation

- Dr Amith Sreedharan - Consultant
Acid Base Disorders ... for appropriate metabolic ... and respiratory ... compensation ... Diagnosis #Nephrology #AcidBase
Acid-Base Disorders - Differential Diagnosis Algorithm
Acidemia (pH < 7.35)
 • Metabolic Acidosis (HCO3 < 24mmol/L) CO2
Acid-Base Disorders ... - Differential ... < 35 mmHg) #AcidBase ... #Disorders #Differential ... #Causes #Compensation
Acid-Base Disorders - Differential Diagnosis Framework

 • Respiratory Acidosis
 • Respiratory Alkalosis
 • Metabolic Acidosis
 •
Acid-Base Disorders ... - Differential ... Kfischer_10 #AcidBase ... #Acid #Base #Disorders ... #nephrology #differential
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Acid Base Disorders ... Respiratory or Metabolic ... • Respiratory compensation ... MDaniyalHashmi1 #AcidBase ... #Gas #VBG #differential
Approach to Acid Base Disorders - Evaluation and Differential Diagnosis
1) Start with the Anion Gap (AG).
2)
and Differential ... an ABG by adding ... the appropriate compensation ... retention • Respiratory ... Ventilation • Respiratory
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 ... compensation if ... MSc @AmyChung #AcidBase ... #ABG #Interpretation
Acid-Base Disorders - Expected Compensation Equations

Metabolic Acidosis:
 • pCO2 = 1.5 x HCO3 + 8 ±
Acid-Base Disorders ... - Expected Compensation ... #AcidBase #Disorders ... #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 ... patient's acidosis is metabolic ... by failure of compensation ... #diagnosis #differential
Differential Diagnosis of Respiratory Acid-Base Disorders
Alkalosis
A. Central nervous system stimulation: Pain, Anxiety, psychosis, Fever, Cerebrovascular accident,
Differential Diagnosis ... Acid-Base Disorders ... Recovery from metabolic ... #acidbase #acidosis ... #alkalosis #differential