BPPV - AnswersBenign paroxysmal positional vertigo; common dizziness cause.
Bony labyrinth - AnswersContains cochlea, vestibule, and semicircular canals.
Otolithic membrane - AnswersLocation of otoconia in utricle and saccule.
Semicircular canals - AnswersThree canals: anterior, posterior, horizontal for balance.
Otoconia - AnswersCalcium carbonate crystals affecting fluid movement.
Endolymphatic fluid - AnswersFluid in semicircular canals responding to head movement.
Cupula - AnswersStructure bending due to endolymphatic fluid movement.
Vestibulo-ocular reflex (VOR) - AnswersMaintains gaze stability during head movement.
Vestibulo-spinal reflex (VSR) - AnswersHelps maintain balance during movement.
Vestibulo-collic reflex (VCR) - AnswersStabilizes head position in response to movement.
Dizziness duration - AnswersTypically lasts less than 1 minute.
Incidence of BPPV - Answers42% of dizziness cases diagnosed as BPPV.
Age-related BPPV - Answers50% of individuals over 65 experience BPPV.
Idiopathic cases - Answers50-70% of BPPV cases have no known cause.
Canalith repositioning - AnswersTherapy for BPPV to realign otoconia.
Comorbidities of BPPV - AnswersConditions like hypertension and diabetes affect BPPV.
Vitamin D deficiency - AnswersLinked to increased BPPV prevalence and recurrence.
Osteoporosis and BPPV - AnswersWeak correlation; osteoporosis treatment may help.
Aging and BPPV - AnswersIncreased risk and longer episode duration after 60.
Posterior canal - AnswersMost commonly affected in BPPV (80-90%).
Anterior canal - AnswersLeast commonly affected in BPPV (5% cases).
Horizontal canal - AnswersAffected in 10-15% of BPPV cases.
Quality of life - AnswersImpaired by fear, anxiety, and chronic dizziness.
Prognosis of BPPV - AnswersExcellent with appropriate canalith repositioning.
, Subjective BPPV - AnswersVertigo without nystagmus; responds to repositioning.
Vestibular hypofunction - AnswersImbalance between left and right vestibular systems.
Chronic vestibular issues - Answers30% of vestibular hypofunction cases become chronic.
Spontaneous rebalancing - AnswersRestoration of firing rate reduces symptoms.
Chronic Dizziness - AnswersPersistent sensation of unsteadiness or spinning.
Vestibular Neuritis - AnswersInflammation of vestibular nerve, causing dizziness.
Age of Onset - AnswersTypically occurs between 30-60 years old.
Symptoms of Vestibular Neuritis - AnswersIncludes spinning, nausea, vomiting, balance loss.
Musculoskeletal Involvement - AnswersNeck pain and respiratory changes linked to dizziness.
Symptom Intensity - AnswersGradually improves over time with decreased duration.
Recurrence Likelihood - AnswersLow chance of repeat episodes of neuritis.
Medical Management - AnswersCorticosteroids reduce inflammation and preserve hearing.
Vestibular Suppressants - AnswersLimit use to 3-5 days to avoid recovery delay.
Vestibular Rehabilitation - AnswersPrimary treatment to improve balance and function.
Dynamic Visual Acuity Test - AnswersAssesses gaze stability during movement.
Motion Sensitivity Quotient - AnswersEvaluates sensitivity to motion for treatment direction.
Balance Assessment Tools - AnswersIncludes DGI, FGA, mCTSIB for balance evaluation.
Endurance Tests - AnswersIncludes gait speed and 6-minute walk test.
Intervention Timing - AnswersEarlier treatment reduces duration of symptoms.
Quality of Life Impact - AnswersNegative changes can lead to depression and deconditioning.
Comorbidities - AnswersAnxiety and depression may hinder recovery.
Meniere's Disease - AnswersEndolymphatic fluid build-up affecting hearing and balance.
Symptoms of Meniere's Disease - AnswersIncludes hearing loss, tinnitus, severe dizziness.
Episodic Nature - AnswersSymptoms last 20 minutes to 24 hours.
Diagnostic Criteria - AnswersIncludes vertigo attacks and audiometric hearing loss.