The Experts below are selected from a list of 3264 Experts worldwide ranked by ideXlab platform
P. C. Brennan - One of the best experts on this subject based on the ideXlab platform.
-
Do symptomatic radiographers provide evidence for 'Darkroom disease'?
Occupational medicine (Oxford England), 2000Co-Authors: A. M. Nallon, B. Herity, P. C. BrennanAbstract:Non-controlled studies performed in New Zealand and the UK reported a high incidence of a large number of symptoms within radiographers. The authors of these investigations proposed that these symptoms resulted from exposure to X-ray processing chemicals and the associated fumes, and collectively labelled the condition 'Darkroom disease'. The absence of control groups in these investigations weakens the 'Darkroom disease' hypothesis. The current work set out to address this deficiency. Forty percent of radiographers (n = 295) and 40% of physiotherapists (n = 250) working in 34% of Irish hospitals (n = 31) were asked if they experienced any of the 15 symptoms described in 'Darkroom disease'. The results demonstrated that radiographers had a significantly higher incidence than physiotherapists for only two of the symptoms--bad taste (P < 0.0001) and sore eyes (P < 0.001). These higher incidences were confined to three of the 31 hospitals surveyed. Physiotherapists expressed a higher incidence for sore throats (P < 0.01) and nasal discharge (P < 0.01). These results clearly demonstrate that radiographers are no more symptomatic than a group of hospital staff not exposed to processing chemicals. The current findings offer no support for the 'Darkroom disease' hypothesis.
-
do symptomatic radiographers provide evidence for Darkroom disease
Occupational Medicine, 2000Co-Authors: A. M. Nallon, B. Herity, P. C. BrennanAbstract:Non-controlled studies performed in New Zealand and the UK reported a high incidence of a large number of symptoms within radiographers. The authors of these investigations proposed that these symptoms resulted from exposure to X-ray processing chemicals and the associated fumes, and collectively labelled the condition 'Darkroom disease'. The absence of control groups in these investigations weakens the 'Darkroom disease' hypothesis. The current work set out to address this deficiency. Forty percent of radiographers (n = 295) and 40% of physiotherapists (n = 250) working in 34% of Irish hospitals (n = 31) were asked if they experienced any of the 15 symptoms described in 'Darkroom disease'. The results demonstrated that radiographers had a significantly higher incidence than physiotherapists for only two of the symptoms--bad taste (P < 0.0001) and sore eyes (P < 0.001). These higher incidences were confined to three of the 31 hospitals surveyed. Physiotherapists expressed a higher incidence for sore throats (P < 0.01) and nasal discharge (P < 0.01). These results clearly demonstrate that radiographers are no more symptomatic than a group of hospital staff not exposed to processing chemicals. The current findings offer no support for the 'Darkroom disease' hypothesis.
Paul J. Foster - One of the best experts on this subject based on the ideXlab platform.
-
Darkroom prone provocative testing in primary angle closure suspects and those with open angles.
The British journal of ophthalmology, 2019Co-Authors: David S. Friedman, Dolly S. Chang, Yuzhen Jiang, Shengsong Huang, Xiangbin Kong, Beatriz Munoz, Tin Aung, Paul J. FosterAbstract:Purpose To describe the results of Darkroom prone provocative testing (DRPPT) in primary angle closure suspects (PACS) and to compare the findings to controls with open angles. Methods 889 subjects with PACS in the Zhongshan Angle Closure Prevention Trial (a randomised controlled trial to compare prophylactic laser iridotomy to no treatment in PACS) and 89 with open angles in the 5-year follow-up of Liwan Eye Study were placed in a Darkroom face down for 15 min. Intraocular pressure (IOP) was measured immediately before and after DRPPT. Results PACS participants were of similar age than controls (59.3 vs 60.5), more often female (82.9% vs 58.4%) and had lower IOP (14.3 vs 15.2 mm Hg). The average IOP increases after DRPPT was 4.3±3 mm Hg in PACS and 5.2±2.8 in controls (p Conclusions A modified DRPPT failed to separate PACS from those with open angle. Although the test resulted in greater IOP elevation among those PACS participants with all four quadrants closed than in those with two or three closed quadrants, it did not offer any insight into the risk of developing acute or chronic angle closure disease over 6-year follow-up.
Yaser Nazzal - One of the best experts on this subject based on the ideXlab platform.
-
evaluation of Darkroom disease s symptoms among radiographers in the west bank hospitals a cross sectional study in palestine
Journal of Occupational Medicine and Toxicology, 2014Co-Authors: Hamzeh Al Zabadi, Yaser NazzalAbstract:Background: Radiographers report many unexplained work related symptoms attributed to “Darkroom disease symptoms” such as headache, skin rash, mouth sores, blurred vision, palpitation, and chemical taste. The aim of the present study was to assess the prevalence of occupationally-related Darkroom disease symptoms among male radiographers in the West Bank hospitals. Methods: A cross sectional study was conducted on a non-random purposive sample of male radiographers (study group) and nurses (control group) using a previously validated and standardized questionnaire. Results: We were able to recruit 330 radiographers and 242 nurses. Data analysis showed that the majority of both groups aged between (36–43) years. Furthermore, the differences in the reported prevalence of symptoms among radiographers showed a statistically significant higher percentage for each reported symptom compared to nurses (P-values <0.001). In multivariate linear regression, staying more than 30 minutes in the Darkroom per shift was associated with a significant increase in the mean number of reported symptoms (P-value < 0.001). However, the availability of a ventilating machine in the Darkroom showed a strong negative association with the mean number of reported symptoms (P-value < 0.001). Conclusions: Our findings could help overcome the limitations usually encountered in such complex occupational exposure. However, trying to interpret our finding directly to chemicals exposure in the radiographers’ occupational setting should be done with caution due to the absence of active or passive monitoring for the suspected chemicals.
-
Evaluation of Darkroom disease’s symptoms among radiographers in the West Bank hospitals: a cross-sectional study in Palestine
Journal of occupational medicine and toxicology (London England), 2014Co-Authors: Hamzeh Al Zabadi, Yaser NazzalAbstract:Background: Radiographers report many unexplained work related symptoms attributed to “Darkroom disease symptoms” such as headache, skin rash, mouth sores, blurred vision, palpitation, and chemical taste. The aim of the present study was to assess the prevalence of occupationally-related Darkroom disease symptoms among male radiographers in the West Bank hospitals. Methods: A cross sectional study was conducted on a non-random purposive sample of male radiographers (study group) and nurses (control group) using a previously validated and standardized questionnaire. Results: We were able to recruit 330 radiographers and 242 nurses. Data analysis showed that the majority of both groups aged between (36–43) years. Furthermore, the differences in the reported prevalence of symptoms among radiographers showed a statistically significant higher percentage for each reported symptom compared to nurses (P-values
A. M. Nallon - One of the best experts on this subject based on the ideXlab platform.
-
Do symptomatic radiographers provide evidence for 'Darkroom disease'?
Occupational medicine (Oxford England), 2000Co-Authors: A. M. Nallon, B. Herity, P. C. BrennanAbstract:Non-controlled studies performed in New Zealand and the UK reported a high incidence of a large number of symptoms within radiographers. The authors of these investigations proposed that these symptoms resulted from exposure to X-ray processing chemicals and the associated fumes, and collectively labelled the condition 'Darkroom disease'. The absence of control groups in these investigations weakens the 'Darkroom disease' hypothesis. The current work set out to address this deficiency. Forty percent of radiographers (n = 295) and 40% of physiotherapists (n = 250) working in 34% of Irish hospitals (n = 31) were asked if they experienced any of the 15 symptoms described in 'Darkroom disease'. The results demonstrated that radiographers had a significantly higher incidence than physiotherapists for only two of the symptoms--bad taste (P < 0.0001) and sore eyes (P < 0.001). These higher incidences were confined to three of the 31 hospitals surveyed. Physiotherapists expressed a higher incidence for sore throats (P < 0.01) and nasal discharge (P < 0.01). These results clearly demonstrate that radiographers are no more symptomatic than a group of hospital staff not exposed to processing chemicals. The current findings offer no support for the 'Darkroom disease' hypothesis.
-
do symptomatic radiographers provide evidence for Darkroom disease
Occupational Medicine, 2000Co-Authors: A. M. Nallon, B. Herity, P. C. BrennanAbstract:Non-controlled studies performed in New Zealand and the UK reported a high incidence of a large number of symptoms within radiographers. The authors of these investigations proposed that these symptoms resulted from exposure to X-ray processing chemicals and the associated fumes, and collectively labelled the condition 'Darkroom disease'. The absence of control groups in these investigations weakens the 'Darkroom disease' hypothesis. The current work set out to address this deficiency. Forty percent of radiographers (n = 295) and 40% of physiotherapists (n = 250) working in 34% of Irish hospitals (n = 31) were asked if they experienced any of the 15 symptoms described in 'Darkroom disease'. The results demonstrated that radiographers had a significantly higher incidence than physiotherapists for only two of the symptoms--bad taste (P < 0.0001) and sore eyes (P < 0.001). These higher incidences were confined to three of the 31 hospitals surveyed. Physiotherapists expressed a higher incidence for sore throats (P < 0.01) and nasal discharge (P < 0.01). These results clearly demonstrate that radiographers are no more symptomatic than a group of hospital staff not exposed to processing chemicals. The current findings offer no support for the 'Darkroom disease' hypothesis.
J M Degagne - One of the best experts on this subject based on the ideXlab platform.
-
Computerized digital photography in auditory research: a comparison of publication-quality digital printers with traditional Darkroom methods.
Hearing research, 1995Co-Authors: D R Trune, D M Berg, J M DegagneAbstract:Digital photography is the rapidly developing field of computer processing of images generated either directly from a digital camera or from scanned conventional film. Subsequent photographs output from digital color printers are publication-quality and superior to conventional Darkroom prints because of greater image control (exposure, contrast, color correction). Because final print quality is the most critical factor in the research application of digital photography, we evaluated the photographic output of several continuous-tone digital printers. Digital images from selected microscopic sections of the middle and inner ear were generated by scanning black and white film and Ektachrome color transparencies and sent to commercial representatives for printing. Photographs from some printers were as good or better than traditional Darkroom prints of the same film when evaluated for resolution, image quality, and costs. It is our hope that the hearing research field will benefit enormously by adoption of chemical-free digital photography because of its quality, convenience, speed, and low cost.
