Oculocephalic and oculovestibular reflexes
Oculocephalic and oculovestibular reflexes are primarily used to determine whether a patient's brainstem is intact (e.g. coma or brain death assessment)
Guillain-Barré Syndrome (GBS)
Guillain-Barré Syndrome (GBS) is the most common and most severe acute paralytic neuropathy, consisting of multiple variants with distinct clinical and pathological features
Hearing Loss in ICU
Hearing Loss in ICU is an under-appreciated problem: Conductive (external ear; middle and inner ear; Sensorineural)
Horner Syndrome
Horner Syndrome = unilateral interruption of ascending cervical sympathetic innervation eye and face.
HSV Encephalitis
HSV Encephalitis: severe viral infection of the central nervous system, caused by a herpes simplex virus and usually localised to the temporal and frontal lobe; most commonly identified cause of infectious encephalitis; 5-10% of encephalitis cases worldwide
Hypoxic Brain Injury
Hypoxic Brain Injury: in adults, typically occurs after cardiac arrest, trauma or drug overdose; degree of injury proportional to duration and severity of oxygen deprivation to the brain
Myasthenia Gravis
Myasthenia Gravis: autoimmune disruption of post-synaptic acetylcholine receptors at NMJ; up to 80% of functional receptors loss; typically young woman; may have thymus hyperplasia; prevalence = 14.2 cases per 100,000
Myopathy versus Neuropathy
Myopathy versus Neuropathy
Neurology Literature Summaries
Neurology Literature Summaries
Non-Convulsive Status Epilepticus (NCSE)
Non-Convulsive Status Epilepticus (NCSE) is a persistent change in the level of consciousness, behaviour, autonomic function, and sensorium from baseline associated with continuous epileptiform EEG changes, but without major motor signs
Airway exchange catheter
Airway exchange catheter; aka airway exchange guide; examples include the Cook Airway Exchange Catheter and the Aintree Intubation Catheter
A-a gradient
A-a gradient is calculated as PAO2 – PaO2. A normal A–a gradient for a young adult non-smoker breathing air, is between 5–10 mmHg.