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Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Disorders - Blood Gas Interpretation ... for Blood Gas Interpretation ... 7.35-7.45 • PaCO2 ... 35-45 mmHg • PaO2 ... Delta: Delta Interpretation
Arterial Blood Gas (ABG) Analysis - Metabolic + Respiratory Acidosis + Alkalosis

pH ↓ pCO2 ↓ -
Respiratory Acidosis + Alkalosis ... ↑ - Metabolic alkalosis ... Respiratory alkalosis ... ABG #Analysis #Interpretation ... Compensation #acidosis #alkalosis
Hypoxia and Hypoxemia - Overview
Hypoxia - insufficient oxygen delivered to tissues to meet demands
Hypoxemia - low
O2 is inspired) PAO2 ... reaches the alveoli) PaO2 ... Low SvO2 → Low PaO2 ... sepsis) - High PaO2 ... differential #diagnosis #causes
Blood Gas Analysis and Interpretation
STEPS TO ANALYSIS
1. Look at PH. Alkalotic or acidotic?
Gas Analysis and Interpretation ... Alkalotic or acidotic ... - If alkalotic, ... - pCO2 (respiratory ... VBG #Analysis #Interpretation
Acid Base and Blood Gas Analysis
1. pH - What’s the primary disturbance?
2. pCO2 - What’s the
2. pCO2 - What’s ... the pCO2? ... production Respiratory alkalosis ... - Contraction alkalosis ... respiratory #bloodgas #interpretation
Acid-Base Disorders - Differential Diagnosis Algorithm
Acidemia (pH < 7.35)
 • Metabolic Acidosis (HCO3 < 24mmol/L) CO2
Respiratory Acidosis (pCO2 ... • Metabolic Alkalosis ... • Respiratory Alkalosis ... (pCO2 < 35 mmHg ... Diagnosis #Algorithm #Causes
Arterial Blood Gas (ABG) Interpretation
 • AG/non-AG Metabolic Acidosis
 • AG Acidosis "Delta/Delta"
 • Metabolic Alkalosis
Blood Gas (ABG) Interpretation ... • Metabolic Alkalosis ... • Respiratory Alkalosis ... BloodGas #ABG #Interpretation ... acidbase #acidosis #alkalosis
Blood Gas (ABG) Interpretation and Acid-Base Pathology
1- Does the patient have an acidosis or an alkalosis?
Blood Gas (ABG) Interpretation ... acidosis or an alkalosis ... concomitant respiratory alkalosis ... AcidBase #ABG #Interpretation ... Metabolic #Acidosis #Alkalosis
Acid Base Disorders Worksheet

Step 1: Gather the necessary data (Na+, CI-, HCO3-, PH, pCO2). Preferably, all
CI-, HCO3-, PH, pCO2 ... has a primary alkalosis ... . 3a: If pCO2 ... >40 patient's alkalosis ... is -Y patient's alkalosis
Acid Base Compensation - Directions - If all three variables (pH, HCO2, pCO2) move in the
variables (pH, HCO2, pCO2 ... AcidBase #Acidosis #Alkalosis