48 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
Flexion - C6, C7 (median ... • Mexion - C8 (median ... opp - C8, T1 (median ... spared in this injury ... Dermatomes #Myotomes #diagnosis
Localizing Extraocular Movement Disorders
 • CN Ill (Oculomotor) Nerve Palsy 
 • CN IV (Trochlear) Nerve
Nerve palsy • Medial ... Fasciculus (MLF) Iniury ... Skew Deviation Casey ... #Localization #ophthalmology ... #differential #diagnosis
Webber Ankle Injury Classification

A: In a Supination-Adduction injury the fibula breaks first, with a fracture below
In more severe cases ... breaks through the medial ... fracture of the medial ... These injuries are caused ... #Diagnosis #Orthopedics
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
Causes of Acute Kidney Injury ( AKI ) - Prerenal, Renal, and Postrenal

PRE-RENAL 
Impaired perfusion: 
•
Causes of Acute ... Kidney Injury ( ... stricture/valves Meatal ... /phimosis #Diagnosis ... Acute #Kidney #Injury
ABG vs VBG: Arterial vs Venous Blood Gases

ABG
PROS: Tells you exactly what the arterial environment looks
vs Venous Blood Gases ... infection, nerve injury ... digital ischemia, injury ... often requires serial ... Comparison #pH #pCO2 #Diagnosis
Tinnitus - Subjective (heard only by patient) - 90% - Differential Diagnosis Algorithm
Unilateral On Audiogram -
- Differential Diagnosis ... • Metabolic Causes ... Cerumen • Otitis Media ... • Closed Head Injury ... #Algorithm #Causes
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
- Differential Diagnosis ... a mass as the cause ... Migraine is a diagnosis ... depress when looking medially ... #Ophthalmology
Kussmaul's sign in Constrictive Pericarditis 

A 50-year-old woman with a remote history of mediastinal lymphoma (age
on her chest (photo ... evaluate her JVP (video ... the underlying diagnosis ... Causes = RV failure ... #PhysicalExam #Video
Polyarteritis Nodosa (PAN): Pathogenesis and Clinical Findings

Medical Comorbidities Malignancies (most commonly hairy-cell leukemia)
Immunogenetic Predisposition: patient is
Clinical Findings Medical ... Viral replication causes ... direct injury to ... Pathophysiology #Diagnosis