13 results
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
Causes of Hypoxemia ... • Interstitial lung ... Abnormalities #Hypoxemia ... #Hypoxia #Differential ... #Diagnosis #Algorithm
Hypoxemia / Hypoxia - Rapid Response Management Algorithm

Stridor - Upper airway pathology:
 • Anaphylaxis
 • Foreign
Hypoxemia / Hypoxia ... atelectasis • Lung ... Sophia_Hayes_MD #Hypoxemia ... #Hypoxia #differential ... #Diagnosis #Management
Hyperacute Hypoxemia - Workup and Management
Differential Diagnosis: Aspiration, Flash Pulmonary Edema, Mucous Plugging, Bronchospasm, Pulmonary Embolism,
Hyperacute Hypoxemia ... Exam, POCUS (B-lines ... STAT CXR, CTA Chest ... #Hyperacute #Hypoxemia ... #Hypoxia #Workup
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
19 Patterns of Lung ... Reverse Halo Sign ... Organizing Pneumonia ... Pulmonary #ChestCT #radiology ... #CTChest #diagnosis
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Atelectasis, ARDS, Pneumonia ... , Interstitial Lung ... arterial #pulmonary #Hypoxia ... #hypoxemia #differential ... #diagnosis
Venn Diagram - Does this patient have pneumonia?
Diagnosis is generally based on three lines of evidence:
this patient have pneumonia ... Diagnosis is generally ... pain) and signs ... (tachypnea, hypoxemia ... #Pneumonia #Venn
Pneumonia on POCUS

Otherwise healthy 12mo-old w/ fever. Linear & phased array viewing the lung (subpleural &
Pneumonia on POCUS ... array viewing the lung ... >1cm, supports diagnosis ... no significant hypoxia ... #lung #ultrasound
Syncope - Differential Diagnosis Algorithm
Neurocardiogenic:
 • Vasovagal
 • Orthostatic Hypotension
 • Autonomic Neuropathy
 • Situational (micturition,
- Differential Diagnosis ... Algorithm Neurocardiogenic ... Pulmonary Embolism • Hypoxia ... Sinus Syndrome (SA ... #Algorithm #causes
Community Acquired Pneumonia (CAP) - Diagnosis and Management

Pneumonia Signs/Symptoms:
 • Confusion/disorientation (LR + 1.9)
 • Cough
(CAP) - Diagnosis ... Signs/Symptoms: ... • Pleuritic chest ... (LR + 2.7) • Hypoxia ... #CAP #Diagnosis
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Chronic cough • Hypoxia ... polycythemia from chronic hypoxia ... Nasal polyps and signs ... in the adjacent lung ... of the affected lung