15 results
Arterial Blood Gas (ABG) Analysis - Metabolic + Respiratory Acidosis + Alkalosis

pH ↓ pCO2 ↓ -
- Metabolic + Respiratory ... acidosis pH ↑ pCO2 ... ↓ - Respiratory ... ↑ - Respiratory ... Interpretation #AcidBase
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
A-a gradient = PAO2 ... - PaO2 A-a gradient ... /0.8)] - PaO2 Normal ... Hypoventilation: CNS of Respiratory ... : Atelectasis, ARDS
Acid Base Compensation - Directions - If all three variables (pH, HCO2, pCO2) move in the
variables (pH, HCO2, pCO2 ... it is a primary respiratory ... Diagnosis #Nephro #AcidBase ... Alkalosis #Metabolic #Respiratory
Understanding & Treating ARDS - Acute Respiratory Distress Syndrome

•  Timing - within one week of
Understanding & Treating ARDS ... - Acute Respiratory ... Impaired Oxygenation PaO2 ... @nickmmark #ARDS ... #Respiratory #Distress
Acid-Base Disorders - Differential Diagnosis Algorithm
Acidemia (pH < 7.35)
 • Metabolic Acidosis (HCO3 < 24mmol/L) CO2
HCO3 12:10 • Respiratory ... Acidosis (pCO2 ... HCO3 7:10 • Respiratory ... Alkalosis (pCO2 ... < 35 mmHg) #AcidBase
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
Criteria for Acute Respiratory ... Distress Syndrome (ARDS ... ) - Respiratory ... severity of the ARDS ... >= 5cm H2O #ARDS
Acid Base and Blood Gas Analysis
1. pH - What’s the primary disturbance?
2. pCO2 - What’s the
2. pCO2 - What’s ... the pCO2? ... Respiratory Acidosis ... CO2 production Respiratory ... MD @nickmmark #acidbase
Blood Gas (ABG) Interpretation and Acid-Base Pathology
1- Does the patient have an acidosis or an alkalosis?
Look at the pCO2 ... Metabolic Equal (If pCO2 ... the change in pCO2 ... calculate the expected pCO2 ... MSc @AmyChung #AcidBase
Mechanical ventilation in obese patients according to the i-STAR Algorithm
Intubate
 • Anticipate difficult airway management and
6 mL'kg PBW in ARDS ... 8 mL4(g in non-ARDS ... Parameters • Respiratory ... minimal to keep PaO2 ... and non ARDS, no
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Respiratory or Metabolic ... 7.35-7.45 • PaCO2 ... 35-45 mmHg • PaO2 ... Metabolic: pH pCO2 ... MDaniyalHashmi1 #AcidBase