26 results
Convergence Retraction Nystagmus with a left 6th nerve palsy

Caused by a Midbrain hemorrhage

Dr. Boby Varkey Maramattom
Convergence Retraction ... Caused by a Midbrain ... @bobvarkey #Convergence
Parinaud's syndrome
What?
 • Light-near dissociation (tectal pupils)
 • Convergence retraction nystagmus
 • Eyelid retraction (Collier's sign)
tectal pupils) • Convergence ... • Dorsal midbrain
Convergence retraction nystagmus on physical exam secondary to dorsal midbrain lesion

#convergence #retraction #nystagmus #ocular #physicalexam #neurology
Convergence retraction ... secondary to dorsal midbrain ... lesion #convergence
Convergence-Retraction Nystagmus on Physical Exam

Convergence-retraction nystagmus: irregular, jerky nystagmus, associated with convergence and retraction of both
Convergence-Retraction ... associated with convergence ... effect on the midbrain ... convergence or ... to the dorsal midbrain
Hyperopia: Pathogenesis and clinical findings
 • Axial length of eye -> Short axial length of the
Decreased light convergence ... rays require less convergence ... rays require more convergence
Parinaud's Syndrome
What?
 - Impaired upgaze
 - Light-near dissociation
 - Convergence retraction nystagmus
 - Eyelid retraction (Collier's
dissociation - Convergence
Mechanical Ventilation in Intra-Abdominal Hypertension (IAH)

How to set the ventilator right.

- Dr. Manu Malbrain @Manu_Malbrain

#Mechanical #Ventilation
Manu Malbrain @Manu_Malbrain
Argyll-Robertson Pupil on Physical Exam
Small (myotic), irregular pupil that do not react to light but do
periaqueductal grey of the midbrain
Pupils: Localization in Coma
 • Small, Reactive pupils: Metabolic coma.
 • Unilateral Fixed, dilated pupil :
fixed pupils: Midbrain
Isocoria - Pupillary Defects - Differential Diagnosis Algorithm
Relative Afferent Pupil Defect
 • Optic Neuritis
 • Ischemic
Alcohol) Dorsal Midbrain