6 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Upper Extremity Dermatomes ... Abduction - C8-T1 (ulnar ... regimental badge" anesthesia ... Myotomes #diagnosis #neurology ... sensory #motor #arm
Ultrasound-Guided Regional Nerve Blocks in Emergency Medicine: Interscalene Brachial Plexus Nerve Block
Uses in the Emergency Department:
Ultrasound-Guided ... Block Uses in ... fracture, proximal and ... at the lateral arm ... #anesthesia #pocus
Lower Extremity Dermatomes and Myotomes
Reflexes: 
 • Knee - L2, L3, L4
 • Ankle - S1
Lower Extremity Dermatomes ... saddle (perineal) anesthesia ... Commonly caused ... damage to peroneal nerve ... Myotomes #diagnosis #neurology
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
compression of nerve ... • S - Saddle anesthesia ... - Emergency Causes ... region (S2-S4 dermatomes ... #neurology
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... hemorrhage, which are ... for hepatitis B and ... Skin biopsy • Abdominal ... ultrasound #
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
loss, arthralgia, arm ... bruits, asymmetric arm ... affects the skin, neurologic ... muscle weakness • Nerves ... often causes arthritis