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Acid Base Disorders - Formulas for appropriate metabolic and respiratory compensation

- Dr Amith Sreedharan - Consultant
metabolic and respiratory ... compensation ... Metabolic #Acidosis #Alkalosis ... #Compensation # ... Diagnosis #Nephrology #AcidBase
Arterial Blood Gas (ABG) Analysis - Metabolic + Respiratory Acidosis + Alkalosis

pH ↓ pCO2 ↓ -
- Metabolic + Respiratory ... pH ↑ pCO2 ↓ - Respiratory ... pCO2 ↑ - Respiratory ... Interpretation #AcidBase ... #Diagnosis #Compensation
Acid Base Compensation - Directions - If all three variables (pH, HCO2, pCO2) move in the
Acid Base Compensation ... Diagnosis #Nephro #AcidBase ... #Acidosis #Alkalosis ... #Metabolic #Respiratory ... #Compensation #
Acid-Base Disorders - Differential Diagnosis Algorithm
Acidemia (pH < 7.35)
 • Metabolic Acidosis (HCO3 < 24mmol/L) CO2
HCO3 12:10 • Respiratory ... • Metabolic Alkalosis ... Alkalosis (pCO2 ... < 35 mmHg) #AcidBase ... Algorithm #Causes #Compensation
Blood Gas (ABG) Interpretation and Acid-Base Pathology
1- Does the patient have an acidosis or an alkalosis?
acidosis or an alkalosis ... alkalosis **If ... do more work = ANION ... MSc @AmyChung #AcidBase ... Metabolic #Acidosis #Alkalosis
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Step 3 - Compensation ... • Metabolic compensation ... • Respiratory ... compensation ... MDaniyalHashmi1 #AcidBase
Acid Base and Blood Gas Analysis
1. pH - What’s the primary disturbance?
2. pCO2 - What’s the
Respiratory Acidosis ... CO2 production Respiratory ... Acidosis - non anion ... metabolic acidosis - anion ... MD @nickmmark #acidbase
Prediction of Compensatory Responses on Simple Acid-Base Disturbances

#acidbase #compensation #metabolic #respiratory #diagnosis #calculations #formulas #acidosis #alkalosis
Disturbances #acidbase ... #compensation # ... metabolic #respiratory ... formulas #acidosis #alkalosis
Approach to Acid Base Disorders - Evaluation and Differential Diagnosis
1) Start with the Anion Gap (AG).
2)
Start with the Anion ... the appropriate compensation ... Diagnosis: • Anion ... retention • Respiratory ... Ventilation • Respiratory
Acid Base Disorders Worksheet

Step 1: Gather the necessary data (Na+, CI-, HCO3-, PH, pCO2). Preferably, all
has a primary alkalosis ... is respiratory ... patient's acidosis is respiratory ... by failure of compensation ... a significant anion