Ravi Singh K @rav7ks
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Academic Hospitalist and Program Director @SinaiBmoreIMRes, Medicine clerkship director GW School of Medicine and Health Sciences RMC at Sinai, Clinical reasoning,Simulation and POCUS enthusiast - https://twitter.com/rav7ks
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CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
Infection in HIV / AIDS ... status, and focal neurologic ... confusion, and focal neurologic ... differential #diagnosis #AIDS ... InfectiousDiseases #Neurology
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Summary Acute AIDP ... management #treatment #neurology
HIV-Associated Neurocognitive Disorder (HAND)

Definition:
HIV-Associated Neurocognitive disorders categories:
• Asymptomatic neurocognitive impairment
• Mild neurocognitive impairment
• HIV dementia

Pathophysiology:
HIV frequently
disorder #dementia #AIDS ... #Neurology
Blurry Vision - Differential Diagnosis Framework

Anatomical Approach to Eye Disease:
1. Lids/Lashes
2. Extraocular Muscles/Motility
3. Conjunctiva/Sclera
4. Cornea
5. Anterior
Lids/Lashes 2. ... optic disk • HIV/AIDS
Differential Diagnosis for Transient Confusion -  6 S Approach:

• Sugar
• Syncope
• Seizure
• Stroke
• Substances
• Sleepiness

#AMS
differential #diagnosis #neurology
Posterior Reversible Encephalopathy Syndrome (PRES) Overview

Clinico-Radiological Syndrome, characterized by:
 • Headache
 • Seizures
 • Altered mental
may precede the neurologic ... Seizures: Treat with AEDs ... diagnosis #management #neurology
Pupils: Localization in Coma
 • Small, Reactive pupils: Metabolic coma.
 • Unilateral Fixed, dilated pupil :
Localization #Coma #Neurology
Unilateral Fixed Dilated Pupil - Differential Diagnosis Framework
If Altered Mental Status - Consider Oculomotor (3rd cranial
differential #diagnosis #neurology
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
Aleve) • Sleep aids
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
aminotransferases • Serology ... Differential #Diagnosis #neurology