44 results
Causes of Peripheral Weakness without Sensory Changes - Differential Diagnosis Algorithm
No Objective Weakness
 • Cardio-pulmonary disease
of Peripheral Weakness ... Sensory Changes - Differential ... Neuropathy • Spinal ... Lambert-Eaton Myasthenic Syndrome ... #Neurology #Differential
Causes of Neuromuscular Weakness
 • Spinal Cord: Demyelinating Disease (MS), Epidural abscess, Infarction, Syringomyelia, Tetanus, Transverse
Neuromuscular Weakness ... • Spinal Cord: ... Guillain-Barre syndrome ... Lambert Eaton Syndrome ... #Causes #differential
Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
Acute Spinal Cord ... -> Anterior spinal ... injury, often from vascular ... Upper extremity weakness ... anesthesia. leg weakness
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Reflexes: • Knee ... • Cauda Equina Syndrome ... - Narrowing of spinal ... claudication and weakness ... stopping walking (vascular
Lesions of the Spinal cord - Spinal Cord Syndromes

Spinal cord lesions can result in permanent neurologic
Syndromes Spinal ... findings: - Weakness ... result in: - Weakness ... in: - Muscle weakness ... #lesions #differential
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
Cauda Equina Syndrome ... constipation Differential ... lumbar stenosis • Vascular ... lower extremity weakness ... #differential #
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
Weakness - Differential ... • Acute stroke syndromes ... Lesions of the spinal ... Paraneoplastic syndrome ... #Differential #
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
- Differential ... /paralysis - Weakness ... Vascular/Blockage ... MCTD, Sjogren syndrome ... diagnosis #neurology #differential
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
of Hypoxemia- Differential ... Asthma, COPD) • Vascular ... Hypoventilation Syndrome ... Neuromascular Weakness ... Hypoxemia #Hypoxia #Differential
Oncologic Emergencies - Differential Diagnosis Framework

HEMATOLOGIC ONCOLOGIC EMERGENCIES:
Hyperviscosity Syndrome:
 • Spontaneous bleeding
 • Shortness of breath
Emergencies - Differential ... Malignant Epidural Spinal ... mental function • Weakness ... Constipation • Muscle weakness ... emergencies #oncology #differential