39 results
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
Acid Base Compensation - Directions - If all three variables (pH, HCO2, pCO2) move in the
variables (pH, HCO2 ... , pCO2) move in ... it is a primary respiratory ... Diagnosis #Nephro #AcidBase ... Alkalosis #Metabolic #Respiratory
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 ... Hypoventilation: CNS of Respiratory ... : Atelectasis, ARDS ... Embolism, Obstructive Lung ... , Interstitial Lung
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 ... production Respiratory ... MD @nickmmark #acidbase
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
Criteria for Acute Respiratory ... Distress Syndrome (ARDS ... ) - Respiratory ... lobar collapse, lung ... severity of the ARDS
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
Understanding & Treating ARDS - Acute Respiratory Distress Syndrome

•  Timing - within one week of
Understanding & Treating ARDS ... - Acute Respiratory ... Impaired Oxygenation PaO2 ... @nickmmark #ARDS ... #Respiratory #Distress
Acute Respiratory Distress Syndrome – ARDS: Clinical Cheat Sheet

An acute diffuse, inflammatory lung injury, leading to
Acute Respiratory ... , inflammatory lung ... permeability, lung ... with decreased lung ... on CT or CXR ● PaO2
Effect of Lung Recruitment and Titrated Positive End-Expiratory Pressure (PEEP) vs Low PEEP on Mortality in
Effect of Lung Recruitment ... Titrated Positive End-Expiratory ... Patients With Acute Respiratory ... moderate to severe ARDS ... Recruitment #PEEP #ARDS