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Dyspnea - Differential Diagnosis Framework

Cardiovascular Causes of Dyspnea:
 • Myocardium:
	- Heart failure
	- CAD/ACS
	- Valvulopathy
 • Electrical:
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- Tamponade Pulmonary ... Vasculature: - PE - Pulmonary ... Myasthenia - Guillain Barre ... diagnosis #causes #pulmonary
Extrapulmonary manifestations of COVID-19
 • Neurologic: Headaches, Dizziness, Encephalopathy, Guillain-Barré, Ageusia, Myalgia, Anosmia, Stroke
 • Renal:
Encephalopathy, Guillain-Barré ... vein thrombosis, Pulmonary ... ischemia, Acute cor pulmonale
Barrel Chest Appearance on Lateral Chest Xray
Typically seen in the setting of chronic air-trapping in COPD

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Barrel Chest Appearance ... EricsMedicalLectures/ #Barrel ... Lateral #Radiology #pulmonary
COPD Physical Exam Likelihood Ratios
Barrel Chest - LR 1.5
Pursed Lip Breathing - LR 2.7
Reduced breath sounds
Likelihood Ratios Barrel ... LRs #diagnosis #pulmonary
Causes of Fatigue - Differential Diagnosis Algorithm
Endocrine
 • Hypo/Hyperthyroidism
 • Diabetes
 • Pituitary Insufficiency
 • Adrenal
Tuberculosis • Epstein-Barr ... Chronic Obstructive Pulmonary
Asthma vs COPD Presentation and Diagnosis
Asthma:
 • Epidemiology: Age usually < 45, History (personal or family)
Hypoxemia/Cyanosis, Barrel ... comparison #Diagnosis #pulmonary
Fever in Returning Travelers from Tropical Regions - Frequent Differential Diagnoses
Medical History:
 • Skin exposure to
cytomegalovirus, Epstein-Barr ... melioidosis, typhoid, pulmonary ... eosinophilia - Tropical pulmonary
NINDS Diagnostic Criteria for Guillain Barre Syndrome 
Features Required for Guillain-Barré Syndrome:
 • Progressive muscle weakness
Criteria for Guillain Barre ... Required for Guillain-Barré ... BrighamMedRes #Guillain #Barre
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Guillain-Barre Syndrome ... females Guillain-Barre ... muscles Guillain-Barre ... Areflexia Guillain-Barre ... GuillainBarre #Guillain #Barre
Guillain-Barre Syndrome
An acute polyneuropathy (disorder Of the peripheral nervous System).
Symptoms are Often symmetrical and progress Over
Guillain-Barre Syndrome