Frontotemporal lobar dementia: different types and how to differentiate
Frontotemporal dementia (Pick’s disease)
Most common
Personality changes and impaired social conduct
Focal gyral atrophy with a knife-blade appearance
Macroscopic: atrophy of frontal and temporal lobes
Microscopic: Pick bodies - aggregation of tau protein
Don’t manage like Alzehmiers
Chronic progressive aphasia = non fluent progressive aphasia
Non fluent speech
Comprehension preserved
Semantic dementia - fluent progressive aphasia
Fluent speech but doesn’t make sense
Pressure ulcers scoring and Mx
Scoring system: Waterlow
Mx: Moist wound environment e.g. hydrocolloid dressings and hydrogels, No routine wound swabs, Surgical debridement
Mx LBD
ACHi mainly rivastigmine as improves cognition as well as neuropsych symptoms e.g. hallucinations
AVOID NEUROLEPTICS AS MAY CAUSE PARKINSONISM
RF alzehimers
Apoprotein E allele E4
Mx Alzheimer’s Disease and non cognitive symptoms?
Mild-moderate: Acetylcholinesterase inhibitors (Donepezil, galantamine, rivastigmine)
Add on/for severe/above contraindicated e.g. bradycardia: NMDA receptor antagonists (memantine)
Non cognitive: no antidepressants unless severe and only antipsychotics if harming themselves or others
DD dementia
Hypothyroidism, Addison’s
B12/folate/thiamine deficiency
Syphilis
Brain tumour
Normal pressure hydrocephalus
Subdural haematoma
Depression
Chronic drug use e.g. Alcohol, Barbiturates
Mx delirium
Haloperidol if no parkinsons
Otherwise lorazepam or atypical antipsychotic (e.g. quetiapine)
Scoring system for delirium
Confusion assessment method
Ix LBD
Clinical
SPECT (aka DATSCAN)
Pathophysiology of LBD
alpha-synuclein cytoplasmic inclusions (Lewy bodies) in the substantia nigra, paralimbic and neocortical areas
Vascular dementia Ix and Mx
Ix: MRI, NINDS-AIREN criteria
Mx: Like alzehmiers if comorbid Alzheimer’s, LBD, No evidence for statins or aspirin
Mx urge incontinence
Due to overactivation muscle
Bladder retraining
Antimusc - Oxybytin, solifenacin, tolertidide, mirabegon
Botox
Mx stress incontinence
Urethra is too weak to stay closed with increased intra abdo pressure
Pelvic floor muscles
Duloxetine (surgery contra indicated)
Mid urethral sling surgery
Urinary tract infections can often mimic or exacerbate incontinence symptoms.
Parkinsons dementia presentation
Motor symptoms for 1 year prior to onset of cognitive symptoms
What are the causes of delirium?
PINCH ME + retention
Alzehimers macro, micro and biochem pathophysiology
Macroscopic: widespread cerebral atrophy of cortex and hippocampus
Microscopic: plaques due to deposition of type A-beta-amyloid protein and tangles caused by aggregation of tau protein
Biochem: deficit of ACh and excess glutamate
Presentation of LBD
Fluctuating cognition