Publications by authors named "R Barr-Hamilton"
Is electronystagmography of diagnostic value in the elderly?
Clin Otolaryngol Allied Sci
February 2002
Article Synopsis
- The study assessed the effectiveness of electronystagmography (ENG) for diagnosing dizziness in individuals over 65, comparing 149 dizzy subjects to 96 asymptomatic controls.
- Central vascular disease was prevalent among the dizzy subjects, while peripheral vestibular disease was rare, and spontaneous nystagmus was a strong indicator for central vascular disease but lacked sensitivity.
- Overall, ENG did not provide significant diagnostic benefits in distinguishing between dizziness types or between dizzy subjects and controls in this elderly community sample.
Re-evaluation of normative electronystagmography data in healthy ageing.
Clin Otolaryngol Allied Sci
August 2000
Article Synopsis
- The study challenges the current reference ranges for electronystagmography (ENG) in elderly patients, suggesting they may not accurately reflect age-related changes.
- Researchers tested 96 healthy individuals over 65 using the Nicolet Nystar Plus system and found that the newly established reference ranges were significantly broader than those provided by the device manufacturer.
- The inconsistencies in reference ranges could lead to misinterpretation of ENG results and potentially explain the high prevalence of vestibular disease among elderly patients experiencing dizziness.
Objective: To compare the findings in dizzy elderly people with those in controls of a similar age to identify which investigations differentiate dizzy from non-dizzy patients and to design an investigational algorithm.
Design: Community based study of clinical and laboratory findings in dizzy and control elderly people.
Setting: Research outpatient clinic at a teaching hospital.
The prognostic value of facial electroneurography in Bell's palsy.
Clin Otolaryngol Allied Sci
June 1994
Twenty six patients with Bell's palsy were studied at presentation using electroneurography. Ninety-four per cent of those who recovered completely could have been predicted by ENoG within 10 days of onset. Of the 18 patients who recovered completely, 13 had a total palsy at presentation.
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- A study evaluated 21 elderly patients with dizziness, revealing that most experienced vertigo, limited mobility, and restricted neck movements.
- Many patients also had poor vision, postural hypotension, and age-related hearing loss (presbyacusis).
- Diagnostic tests like electronystagmography and MRI highlighted issues such as positional nystagmus and ischaemic changes, suggesting that vertebrobasilar ischaemia may be a significant factor to consider, given its potential link to stroke risk.