20 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity ... #UpperLimb #Extremity ... Dermatomes #Myotomes #diagnosis ... #neurology #sensory ... #motor #arm #physicalexam
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
paralysis should be looked ... wasting from other causes ... suggests extra-renal causes ... Pressure: - Metabolic ... #Hypokalemia #diagnosis
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
• Cauda Equina Syndrome ... Commonly caused ... Dermatomes #Myotomes #diagnosis ... #neurology #sensory ... #motor #leg #physicalexam
Etiologies of Peripheral Neuropathy
 • Metabolic / Nutritional: DiabetesB12 deficiency, Uremia/ESRD, Hypothyroidism
 • Medication-induced: ART, Antibiotics,
Neuropathy • Metabolic ... Medication-induced: ART ... Paraprotein-associated (POEMS syndrome ... #differential #diagnosis ... #causes #neurology
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
- Emergency Causes ... Differential Diagnosis ... Syringomyelia • Spinal AVM ... #differential #diagnosis ... #causes #neurology
Monteggia Fracture 
Fracture of proximal ulnar shaft with radial head dislocation. Remember “MUGR” to recall where
the fracture is located ... ), compartment syndrome ... Posterior long arm ... • If stable ... Radiology #XRay #Diagnosis
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
and Differential Diagnosis ... with previously stable ... heart failure, neurologic ... hypokalemia and metabolic ... Neurologic disorders
Spinal Cord Disorders - Differential Diagnosis Framework

Spinal cord neurological lesion:
Clinical findings:
 • Symptoms and signs below
- Differential Diagnosis ... Non-compressive Spinal Cord Causes ... Toxic Metabolic: ... MCTD, Sjogren syndrome ... #neurology #differential
Guillain-Barre Syndrome - Summary

Acute AIDP that presents with rapidly progressive flaccid weakness

Epidemiology:
 • 1-2 cases/100,000 per
Epidemiology: • 1-2 cases ... paralysis of all extremity ... Can begin in arms ... Absent Reflexes: Arms ... #treatment #neurology
Abnormalities in Rate and Rhythm of Breathing 
Normal 
The respiratory rate is about 14—20 per min
, anxiety, and metabolic ... hyperventilation syndrome—a ... Occasional sighs are ... Abnormalities #Abnormal #Diagnosis ... #PhysicalExam