8 results
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
of Lung Findings ... on Chest CT 1. ... Reverse Halo Sign ... Organizing Pneumonia ... #ChestCT #radiology
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
of interstitial lung ... - Imaging: • CXR ... consolidation and GG pattern ... Diagnosis: • Lung ... DDX: • CAP,
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
Miliary Pattern ... throughout the lungs ... rarely typical pneumonia ... diagnosis #pulmonary #CXR ... #clinical #CT
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
CT demonstrates ... chest film and can ... feeding vessel sign ... #Clinical #Radiology ... #CXR #CTChest #
Community Acquired Pneumonia (CAP) - Diagnosis and Management

Pneumonia Signs/Symptoms:
 • Confusion/disorientation (LR + 1.9)
 • Cough
(CAP) - Diagnosis ... Obtain in severe CAP ... Pseudomonas) • Severe CAP ... radiographically confirmed CAP ... #CAP #Diagnosis
Atoll Sign (Reverse-Halo Sign) on Chest CT
 • Central GGO surrounded by a crescentic or circumferential
CT • Central GGO ... consolidation • DDx: COP ... IFI, PJP, LG, GPA ... #CT #Lung #Pulmonary ... #diagnosis #radiology
Basics of Waveform Capnography
Waveform capnography assesses ventilation by monitoring exhaled carbon dioxide
Can use measurement and morphology
Assessing ROSC during CPR ... zero WAVEFORM PATTERNS ... surface - Pattern ... the heart to the lung ... oscillations - Sign
Authors: Mark M. Ramzy, DO, EMT-P (@MarkRamzyDO, EM Resident Physician, Drexel University, Department of Emergency Medicine)
Vital signs: BP ... a chest x-ray (CXR ... chest radiograph pattern ... #Radiology #CTChest ... #Lung #Pulmonary