PubMed Health⌕ Search

Biomedical subjects

D McCarter

Publications and source records attributed to D McCarter.

5 recordsLinked to original sources
PubMed2002

Prevalence of primary open angle glaucoma in general ophthalmic practice in the United Kingdom.

AIM: To estimate the predicted prevalence of primary open angle glaucoma (POAG) from the activity of a local ophthalmology department. METHOD: Using clinic audit data, the local incidence and prevalence of POAG in the registered population of two primary care trusts were calculated. RESULTS: The local derived prevalence estimate for POAG was 978 per 100 000 people aged 40-89 years (95% CI 753 to 1272) compared with the expected prevalence from a published model of 1230 people per 100 000 people aged 40-89 years. CONCLUSION: The derived prevalence was not statistically significantly different from that predicted. Based on the published evidence that about half of the POAG cases are undetected, it would have been expected that local audit figures would have yielded figures about 50% lower than the epidemiological model. The main reason for this higher prevalence is thought to be differences in the diagnostic criteria used. This lack of consensus on the case definition for POAG is a deficit, which will hamper future needs assessment.

Adult↗
PubMed1993

Detection of pneumothorax by accident and emergency officers and radiologists on single chest films.

To assess whether an accurate diagnosis of pneumothorax can be made on a single chest film, 233 pairs of inspiratory (I) and expiratory (E) chest films taken in an accident and emergency (A&E) department for suspected pneumothorax were reviewed by two A&E officers and three radiologists. The films were assessed for the presence of pneumothorax by viewing the I film in isolation and, after an interval, by viewing the paired I and E films together. Fifty-four of the patients had a pneumothorax. The five observers missed 23 pneumothoraces (8.5% of total) on the I film alone which were correctly diagnosed on the paired I and E films, the three radiologists missed 10/162 pneumothoraces on the I film alone which were correctly identified on the I and E films (6%) and the two A&E officers 13/108 (12.5%). The use of a single inspiratory chest film for suspected pneumothorax could result in pneumothoraces being missed, particularly by less experienced observers and therefore we believe that paired I and E films should continue to be used routinely for suspected pneumothorax.

Adolescent↗