67 results
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
hand" ± Horner Syndrome ... nerve in the radial ... Carpal Tunnel Syndrome ... in the median nerve ... axillary nerve
Causes of Sudden Cardiac Arrest
Primary Myocardial Processes (> 90%):
 • Acquired structural heart disease: CAD, Most
Causes of Sudden ... : Hypertrophic cardiomyopathy ... Cardiac #Arrest #cardiology ... #differential # ... diagnosis #causes
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Diagnosis- Compatible syndrome ... + MRI lesions + ... #Brain #differential ... #diagnosis #causes ... #radiology #neurology
Restrictive Cardiomyopathy - Diagnosis and Causes
Clinical: Dyspnea, Exercise Intolerance, ↑ "Right Sided-Symptoms" (ascites, hepatomegaly, ↑↑peripheral edema)
Physical
Diagnosis and Causes ... Echocardiography, Cardiac MRI ... Hyper-eosinophilc Syndrome ... #differential # ... cardiology #algorithm
Etiologies of hypertrophic cardiomyopathy
 - Genetic 
 - Storage diseases 
 - Neuromuscular and mitochondrial disorders
of hypertrophic cardiomyopathy ... - Malformation syndromes ... #differential # ... diagnosis #cardiology ... #causes
Tinnitus - Subjective (heard only by patient) - 90% - Differential Diagnosis Algorithm
Unilateral On Audiogram -
patient) - 90% - Differential ... Audiogram - Perform MRI ... Cochlear or Auditory Nerve ... • Metabolic Causes ... Diagnosis #Algorithm #Causes
Myocarditis - Diagnosis and Causes
 • Clinical presentation: Pseudo-acute coronary syndrome, Cardiac failure <3 rnonths, Cardiogenic
Pseudo-acute coronary syndrome ... Recent flu-like syndrome ... pericarditis • Rule out differential ... #Myocarditis #differential ... #cardiology #MRI
Posterior Ankle Impingement (Os Trigonum) Syndrome - MSK Radiology
Imaging Findings:
 • Os trigonum which has marrow
(Os Trigonum) Syndrome ... - MSK Radiology ... Case description ... hallucis longus Differential ... osteochondral lesion
Guillain–Barré syndrome (GBS)
(aka: Landry–Guillain–Barré–Strohl syndrome:
	Most common cause of acute flaccid paralysis
	Rapidly progressive ascending paralysis & areflexia
	Autonomic
Guillain–Barré syndrome ... Landry–Guillain–Barré–Strohl syndrome ...  Most common cause ... Differential diagnosis ... prominent cranial nerve
Deep T Wave Inversions - Differential
Normal variants 
  A. Juvenile T wave pattern
Wave Inversions - Differential ... (Yamaguchi syndrome ... wave inversion syndrome ... #Diagnosis #Causes ... #Cardiology #ECG