16 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
nerve in the radial ... spared in this injury ... nerve distribution ... axillary nerve ... Dermatomes #Myotomes #diagnosis
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
palsy • Medial ... Fasciculus (MLF) Iniury ... Skew Deviation Casey ... #Localization #ophthalmology ... #differential #diagnosis
ABG vs VBG: Arterial vs Venous Blood Gases

ABG
PROS: Tells you exactly what the arterial environment looks
vs Venous Blood Gases ... hematoma, infection, nerve ... injury, digital ... often requires serial ... Comparison #pH #pCO2 #Diagnosis
Wrist Drop on Physical Exam - Caused by Radial Nerve Injury

#Wrist #Drop #PhysicalExam #Radial #Nerve #Injury
Physical Exam - Caused ... by Radial Nerve ... Injury #Wrist ... #Nerve #Injury ... #clinical #video
Wrist Drop on Physical Exam - Caused by Radial Nerve Injury

#Wrist #Drop #PhysicalExam #Radial #Nerve #Injury
Physical Exam - Caused ... by Radial Nerve ... Injury #Wrist ... #Nerve #Injury ... #clinical #video
Wrist Drop on Physical Exam - Caused by Radial Nerve Injury

#Wrist #Drop #PhysicalExam #Radial #Nerve #Injury
Physical Exam - Caused ... by Radial Nerve ... Injury #Wrist ... #Nerve #Injury ... #clinical #video
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
- Differential Diagnosis ... a mass as the cause ... depress when looking medially ... #Algorithm #Causes ... #Ophthalmology
Median Nerve Injury and Anhidrosis
Note dry skin that precisely matches a median nerve distribution (spares ulnar
Median Nerve Injury ... wound to the wrist caused ... nerve injury. ... nerve injury was ... Hand #Clinical #Photo
Tinnitus - Subjective (heard only by patient) - 90% - Differential Diagnosis Algorithm
Unilateral On Audiogram -
- Differential Diagnosis ... Cochlear or Auditory Nerve ... • Metabolic Causes ... Cerumen • Otitis Media ... • Closed Head Injury
Seesaw Nystagmus 

Sawtooth or seesaw nystagmus is an unusual but characteristic type of nystagmus. Typically there
nucleus of the medial ... concept suggests an injury ... We have varied causes ... The video was provided ... #ophthalmology