ACH - Falls Flashcards
What is Zopiclone?
Is a non-benzodiazepine hyponotic used to treat insomnia
- MoA: binds GABAA-receptors enhances inhibitory actions of GABA to cause hypnotic + anxiolytic effects
- Adult = 7.5 mg OD PO for up to 4 weeks NOCTE
- Elderly = 3.75 mg OD PO for up to 4 weeks NOCTE (can be increased)
What does the mnemonic DAME stand for in grouping the causes of a fall?
-
D - Drugs
- Polypharmacy i.e. drug interactions or compounded effects
- Antihypertensives
- Sedatives
- Opiods
- Psychotropics
-
A - Ageing
- Vision changes
- Cognitive decline
- Gait abnormalities
- Osteoarthritis
-
M - Medical causes
- Cardiac e.g. hypotension, arrhythmias
- Neuro e.g. PD, strokes, neuropathy, cateracts
-
E - Environmental
- Walking aids
- Footwear
- Home hazards
- Fear of falling
What things should you be thinking about in a patient who has fallen, in regards to Before, During and After the fall?
- Before:
- Where was the person?
- What time of day was it?
- Is there a pattern to the falls?
- Did they have any symptoms before falling?
- Why do they think they fell?
- During:
- Did they lose consciousness?
- Have they injured themselves?
- After:
- How did they get help?
- Were they able to get up?
- Have they suffered any complications (i.e. long lie, fracture, head injury etc)?
What is a good follow up question what a patient describes themselves as having felt ‘dizzy’?
“People say dizziness to mean a lot of different things. Can you tell me what you mean when you say ‘dizziness’?
- If this doesn’t help then follow up with specific questions e.g. did you feel light headed? was the room spinning?
What is Vertigo?
Vertigo = the false sense that the body or environment is moving
- Often described as “sensation of room spinning”
- Is suggestive of a problem with vestibulo-labyrinthine system i.e. anywhere between the ear (peripheral vertigo) and the central vestibular pathways (central vertigo)
What are some peripheral causes of Vertigo and their common features?
Peripheral veritgo causes:
-
Benign paroxysmal positional vertigo (BPPV) - common!
- Gradual onset
- Triggered by change in head position
- Episodes last 10-20 secs (can be up to 1 min)
- Diagnosed by Dix-Hallpike manoeuvre and treated using Epley manoeuvre
-
Meniere’s disease
- Hearing loss
- Tinnitus
- Sensation of fullness/pressure in one or both ears
-
Vestibular neuritis
- No hearing loss
- Recent viral infection
- Recurrent vertigo attacks (last hrs - days)
-
Acoustic neuroma
- Hearing loss
- Tinnitus
- Absent corneal reflex
- Associated with neurofibromatosis type 2
Patient presents with repeated episodes of vertigo lasting a couple hours at a time, no hearing loss, recent URTI, no nausea / vomiting - likely cause?
Vestibular neuritis
How is benign paroxysmal position vertigo diagnosed and what does the diagnosis involve?
Dix-Hallpike manoeuvre
https://www.youtube.com/watch?time_continue=135&v=8RYB2QlO1N4
- Sit upright, straight legged on a couch, with arms folded across chest
- Put your hands on either side of their head and turn it 45 degrees towards you, ask them to stare at your nose
- Lower patient smoothly backwards so their head is extended roughly 20 degrees over the back of the couch
- If patient has BPPV –> nystagmus within 20-30 secs (can take up to 1 min)
- Do on both sides (with head turned left/right), do asymptomatic side first
- Patient must keep eyes OPEN!!
How is Benign paroxysmal positional vertigo treated?
Epley manoeuvre
https://www.youtube.com/watch?time_continue=32&v=jBzID5nVQjk
- Perform the Dix-Hallpike manoeuvre
- Then once nystagmus has resovled, turn pts head 90 degrees so that it is now tilted by 45 degrees facing the opposite side
- Ask patient to roll onto the side they are now tilted towards, as they do this rotate their head so that it continues to be rotated 45 degrees to that side
- Take control + weight of patient’s head, then ask patient to sit up with legs over side of couch and finish with their head facing downwards in the midline
A patient describes having felt ‘dizzy’, what other details might suggest their dizziness is a presyncopal sensation?
Presyncopal sensation
- Feeling like “about to faint” or “light-headed”
- Often occurs when patient is; standing, seated or upright
- Associated with pallor - relieved by lying down
- Suggests cerebral hypoperfusion due to hypotension
What is a common cause of presyncopal symptoms, especially in the elderly?
Orthostatic (postural) hypotension
- When BP ↓ as a result of standing from seated/lying position
- Diagnosed by doing a lying standing BP
What symptoms should you note and record in a pt with confirmed or suspected orthostatic hypotension?
- Dizziness
- Light-headedness
- Vaugeness
- Pallor
- Visual disturbance
- Feeling weak
- Palpitations
How is a lying + standing BP performed?
- Acquire assistance (needed for standing BP)
- Ask patient to lie down for > 5 mins
- Measure BP
- Ask patient to stand (assist if needed)
- Measure BP (within 1st minute of standing)
- Measure BP again after pt has been stood for 3 mins
- Repeat BP is it is still falling
What qualifies at a +ve result on a lying + standing BP test?
Positive result = :
- A drop in systolic BP of ≥ 20 mmHg (with or without symptoms)
- A drop to < 90 mmHg on standing even if the drop is less than 20mmHg (with or without symptoms)
- A drop in diastolic BP of 10 mmHg with symptoms (although clinically less significant than a drop in systolic BP)
A patient reports dizziness, if this was due to psychogenic causes what features might the patient have?
- Psychogenic causes of ‘dizziness’ are common!
- Fear of falling
- Loss of confidence in movement
- Anxiety / panic attacks / somatisation (psychological stress manifested as physical symptoms)
- Psychogenic causes of dizziness are often associated with + exacerbate organic causes