65 results
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 ... : Atelectasis, ARDS ... Hypoxia #hypoxemia #differential
Hypoxia and Hypoxemia - Overview
Hypoxia - insufficient oxygen delivered to tissues to meet demands
Hypoxemia - low
O2 is inspired) PAO2 ... hypoxia) - Low PaO2 ... Low SvO2 → Low PaO2 ... Hypoxemia #summary #pulmonary ... #differential #
PROSEVA definition of ARDS
Thus, the PROSEVA trial essentially modifies the Berlin definition of ARDS, with the
definition of ARDS ... definition of ARDS ... requirement that the PaO2 ... requires that the PaO2 ... FiO2 ratio remain stable
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
Distress Syndrome (ARDS ... consistent with pulmonary ... lung collapse, or pulmonary ... severity of the ARDS ... >= 5cm H2O #ARDS
Pulmonary and Non-Pulmonary Causes of ARDS #Diagnosis #EM #PCC #ARDS #Differential #Algorithm #Pulmonary #NonPulmonary #Causes #Ddxof
Pulmonary and Non-Pulmonary ... Causes of ARDS ... Diagnosis #EM #PCC #ARDS ... #Differential # ... Algorithm #Pulmonary
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 ... ARDSnet low-PEEP table ... and non-ARDS) ... minimal to keep PaO2
Acute Respiratory Distress Syndrome – ARDS: Clinical Cheat Sheet

An acute diffuse, inflammatory lung injury, leading to
Distress Syndrome – ARDS ... leading to increased pulmonary ... consistent with pulmonary ... on CT or CXR ● PaO2 ... days after dx of ARDS
Hypoxemia vs Hypoxia
Hypoxemia - Partial pressure of arterial oxygen (PaO2) is below normal
Hypoxia - Insufficient oxygen
arterial oxygen (PaO2 ... compensate for low PaO2 ... hypoxia #hypoxemia #differential ... diagnosis #comparison #pulmonary
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
Chronic Dyspnea - Differential ... Artery Disease • Stable ... Pneumonia • ARDS ... Vessels • Pulmonary ... #Dyspnea #SOB #Differential
Acute Hypoxemia - Differential Diagnosis
 • Hyperacute: Aspiration, Flash Pulmonary Edema, Mucous Plugging, Bronchospasm, Pulmonary Embolism,
Acute Hypoxemia - Differential ... Aspiration, Flash Pulmonary ... Bronchospasm, Pulmonary ... - Physiologic: ARDS ... Hypoxemia #hypoxia #Differential