4: Dizzy patient Flashcards
(43 cards)
Is dizziness the same as vertigo?
Dizziness is the patient’s word for how they feel
Vertigo is the sensation of spinning
When a patient says they’re dizzy, what might they mean?
Vertigo
Pre-syncope
Seizures
What is vertigo?
Sensation of spinning
Vertigo has a good chance of being related to which organ?
Ear
Which structures do the vestibular nerves supply?
Semicircular canals
Urticle
Saccule
Which vestibular structures detect
a) head movements
b) horizontal motion
c) vertical motion?
a) Semicircular canals
b) Urticle
c) Saccule
What systems control balance?
Ear
Eyes
Joints (proprioception)
Heart
What eye conditions upset balance?
Anything causing vision loss (cataracts, diabetic retinopathy, glaucoma, macular degeneration…)
What diseases can affect joint sensation, which itself affects balance?
Arthritis
Neurological disorders
Which cardio conditions affect balance?
Arrythmias
Postural hypotension
What brain disorders can cause balance problems?
Migraine
Space-occupying lesions
Multiple sclerosis
What is the vestibulocular reflex?
Ability to keep focused on an object when your head is moving
What are the sensory organs of rotation found in the semicircular canals?
Crista ampullaris
What eye sign is caused by an impaired vestibulo-ocular reflex?
Nystagmus
Which eye sign indicates a vestibular problem?
Nystagmus
What is the most common GP presenting complaint in people over 75?
Dizziness
What questions should you ask when taking a history from someone with dizziness?
Triggers?
Duration?
Associated symptoms? pain, hearing loss, vision, cardio
Alleviating factors?
Medication?
What should be examined in someone who is dizzy?
Ear exam
Neuro exam
Blood pressure (lying/standing)
What is the most common ENT cause of dizziness?
Benign positional paroxysmal vertigo (BPPV)
What is the symptom of BPPV?
Veritgo on changing position, looking up
What is the most common cause of BPPV?
Idiopathic
What is the pathophysiology of BPPV?
Movement of otolith (calcium carbonate crystals) from urticle into semicircular canals, causing sensation of motion
How long do episodes of BPPV last?
Never more than 30s
Does BPPV have any associated symptoms?
No