10 results
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
CT 1. ... Reverse Halo Sign ... ARDS 3. ... Organizing Pneumonia ... Patterns #Lung #Pulmonary
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Infections in HIV ... • CT: Halo sign ... macrophages in HIV ... low if you have HIV ... #AIDS #pulmonary
Venn Diagram - Does this patient have pneumonia?
Diagnosis is generally based on three lines of evidence:
this patient have pneumonia ... infiltrate (e.g., CXR, CT ... , ultrasound) - ... pain) and signs ... #Pneumonia #Venn
Pulmonary Pathology and Associated Lung Ultrasound Findings
Pneumothorax:
 - No lung sliding/barcode sign
 - Lung point (hard
Associated Lung Ultrasound ... pleura reflection) Pneumonia ... cases - Dynamic air ... Distress Syndrome (ARDS ... #Lung #POCUS #ultrasound
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
Pulmonary Infections ... in HIV-AIDS Bacterial ... identified, Strep pneumoniae ... CXR +/- High res CT ... chest scan), CBC
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
bronchial wall injury ... Nasal polyps and signs ... thickening, presence of air-fluid ... CT) • Broncho-arterial ... , CCP, ANCA • HIV
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
cause: Aspiration pneumonia ... for Klebsiella pneumonia ... lat decubitus - air ... CT Lung Abscess ... Lung #Abscess #pulmonary
Hampton hump is a radiologic sign which consists of a shallow wedge-shaped opacity in the periphery
is a radiologic sign ... hump along may aid ... In this case, pulmonary ... confirmed with chest ... CT angiography.
TRALI Diagnostic Criteria
TRALI type 1 - Patients who have no risk factors for ARDS and meet
< 90% on room air ... evidence of bilateral pulmonary ... on imaging (eg. chest ... chest CT, or ultrasound ... diagnosis #Criteria #pulmonary
Authors: Mark M. Ramzy, DO, EMT-P (@MarkRamzyDO, EM Resident Physician, Drexel University, Department of Emergency Medicine)
Vital signs: BP ... SpO2 88% on room air ... Pulmonary Contusion ... #Radiology #CTChest ... #Lung #Pulmonary