21 results
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Hypoventilation: CNS ... Hypoventilation Syndrome ... : Atelectasis, ARDS ... Gradient #alveolar #arterial ... #hypoxemia #differential
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Diagnosis- Compatible syndrome ... lymphoproliferative disease ... Infectious: • Bacterial ... Lesions #Brain #differential ... causes #radiology #neurology
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
Chronic Dyspnea - Differential ... • Sub-Valvular Disease ... Acute Coronary Syndrome ... Arrhythmia • Atrial ... Pneumonia • ARDS
Headache Etiologies and Associated Spectrum of Severity of Disease by System
Critical, Emergent and Non-Emergent Causes
CNS, neurologic,
Headache Etiologies ... Non-Emergent Causes CNS ... , neurologic, vessels ... Pulmonary or oxygen ... #causes #differential
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
Hyponatremia - Differential ... cirrhosis, nephrotic syndrome ... Stress, Nausea, Pulmonary ... Diseases, CNS Disease ... Algorithm #diagnosis #nephrology
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
skin injury) • Neurologic ... basal ganglia, CNS ... symptoms (headache ... : Arterial (MCC-small ... ) Differential Diagnosis
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
HIV / AIDS - Differential ... Symptoms: Fever, headache ... Demyelinating disease ... #Infections #differential ... #diagnosis #AIDS
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... 50 years • New headache ... affects the skin, neurologic ... • Coronary arteries ... Thrombosis and arterial
Extra-articular and Other Conditions Associated with Joint Pain

Eyes
  • Iritis or uveitis - Spondyloarthropathies, Sarcoidosis,
Fever • Bacterial ... Pulmonary ... Spondyloarthropathies, SLE • Pulmonary ... - SLE Neurologic ... #joint #pain #differential
Neurological Manifestations of Tuberculosis
Spinal Arachnoiditis & Polyradiculopathy:
 • Subacute onset of limb weakness, bladder/bowel dysfunction, muscle
lesion Pott's Disease ... Reconstitution Inflammatory Syndrome ... • Papilledema, headache ... Tuberculosis #diagnosis #differential ... #TB #neurology