ABSTRACT
Background: Devic's disease is a progressive disease with visual loss. This study was performed to compare the changes in visual evoked potential in Devis patients and healthy subjects attending to Basir clinic in 2013 and 2014
Materials and methods: In this cross-sectional descriptive study, 25 Devic's patients and 25 healthy subjects attending to Basir clinic in 2013 and 2014 were enrolled and their VEP results were determined and compared between two groups. Data analyses were performed using t- test
Results: The mean [ +/- standard deviation] voltages in case and control groups were 4.4 +/- 2.8 microvolt and 6.2 +/- 2.3 microvolt, respectively [P=0.023]. The mean latency was 105.3 +/- 10.8 millisecond in case group and 95.6 +/- 8.8 millisecond in control group [P=0.001]
Conclusion: Totally, according to the obtained results in this study and comparison with other studies it may be concluded that Devic's disease would result in decreased voltage and increased latency in VEP of the patients
ABSTRACT
One of the radioactive sources in operating room is fluoroscopy which is used in a variety of surgical operations. Because the operating room walls are not protected by lead, this study was done to measure the radiation receiving dose at nearby room during fluoroscopic percutaneous nephrolithotomy. After randomization, we measured x-ray in distance of 0.5 m, behind wall [3.50 m], and 30 meter [background dose] in 40 urological procedures in a simultaneous manner for a period of two months by using 12 thermoluminescent chips, and compared the results using independent T test. The total fluoroscopy time was 66.90 minutes and the mean voltage used was 76.38 kV. Mean radiation dose for 40 procedures received at a distance of 0.5 meter was 0.426 +/- 0.188 with minimum of 0.260 and maximum 0.689 mSv, while radiation dose received by a nearby room was zero. There was statistically significant difference between the amount of radiation received at distance of 0.5 meter and the adjoining room [P <0.05]. The amount of radiation received at 0.5 meter was high and safety guidelines should be considered. Furthermore, the dose of radiation received in a neighboring room like the background dose was zero which means that working in adjoining rooms is safe
ABSTRACT
Toxoplasmosis is a parasitic disease caused by Toxoplasma gondii that can affect various parts of the body and it is most prevalent in Asian countries. There are various methods for detection of visual impairment in patients with toxoplasmosis. One of these non-invasive methods is electrooculogram [EOG] which evaluates visual function in patients with toxoplasmosis. This study was performed to determine the prevalence of ocular complications of toxoplasmosis by EOG. In this cross-sectional study, 50 subjects referred to Qods Clinic from 2011 to 2012 including 25 case with ocular toxoplasmosis and 25 control subjects without toxoplasmosis were enrolled and the EOG results were compared among two groups. The mean [ +/- standard deviation] Arden indices were 1.35 +/- 0.25 and 2.3 +/- 0.31 in control and case group, respectively [P=0.0001]. According to our results and comparison with other studies, it may be concluded that ocular complications of toxoplasmosis is more prevalent compared with control group according to EOG technique