3511 results
Chronic Hypertensive Retinopathy: Pathogenesis and clinical findings

Ophthalmic Artery Hypertension
Stage 1: Mild/vasoconstrictive
 • Acute and chronic vasospasm
Ischemia of optic disc ... swelling and blurred disc ... Leakage of optic disc ... hemorrhage and disc ... #Retinopathy #pathophysiology
Cauda Equina Syndrome
Causes:
 • Large lumbar degenerative disc herniation (central)
 • Severe lumbar spondylosis
 • Neoplasm
Equina Syndrome Causes ... lumbar degenerative disc ... Syndrome #MSK #pathophysiology
Central Retinal Artery Occlusion: Pathogenesis and clinical findings
 • Inflammatory Disease: (i.e. GCA, SLE, GPA) ->
retinal edema caused ... ischemia results in disc ... -> Pale Optic Disc ... Occlusion #CRAO #pathophysiology
Diabetic Retinopathy: Pathogenesis and clinical findings

Mild Non-proliferative DR
 • Outpouchings of the weakened capillary walls or
retinal ischemia causes ... neovascularization in the disc ... complications #pathophysiology
Common causes of sciatica. Disc herniation is the commonest cause. Spondylolisthesis can cause impingement #Anatomy #Pathophys
Common causes of ... Disc herniation ... the commonest cause ... Spondylolisthesis can cause
Pathological Optic Disc Cupping

Note cup-to-disc ratio at least 0.8 (physiologic limit of 0.5).

Thinning of optic disc
Pathological Optic Disc ... Note cup-to-disc ... so that optic disc ... Usual cause is glaucoma ... Glaucoma causes
Disc Herniations - Pathogenesis and Complications
• 90% of Lumbar disc herniations happen at L4/5 and L5/S1
•
Disc Herniations ... 90% of Lumbar disc ... 60% of cervical disc ... the vertebral disc ... complications #msk #pathophysiology
Jaundice - Pathophysiology and Causes

- Amy Chung, MD, MSc @AmyChung 

#Jaundice #Pathophysiology #Differential #Unconjugated #Causes #Diagnosis
Jaundice - Pathophysiology ... and Causes - ... #Jaundice #Pathophysiology ... #Unconjugated #Causes
Causes and Pathophysiology of Hypertension

#Causes #Pathophysiology #Hypertension #Primary #Essential #Secondary #Differential

** GrepMed Recommended Text: Guyton and
Causes and Pathophysiology ... Hypertension #Causes ... #Pathophysiology
Congestive Heart Failure - Causes, Pathophysiology and Differential Diagnosis
 • Dilated Cardiomyopathy 
 • Hypertrophic Cardiomyopathy
Heart Failure - Causes ... , Pathophysiology ... • Other HFpEF Causes ... #HeartFailure #Causes ... #Pathophysiology