[ knowledge and practice of dentists about medical emergency in private dental offices]

In order to get ready for medical emergencies, sufficient scientific knowledge, suitable facilities and emergency drugs are necessary. This study aimed to investigate the emergency facilities, drugs and the knowledge of dentists about emergency cases in dental offices of Kerman in 1386. This is cross-sectional and descriptive study using questioners. Some active dental offices were selected and the questioners were given to them. The completed forms were gathered. The data were extracted and analyzed by t-test, fisher, chi[2], using SPSS 13.5 statistical program. In the present study, 101 dentist were enrolled. 25 dentists, [24.7%] had emergency cases in their office, and the most prevalent case was vasodepressor syncope. The mean knowledge of the dentist was 5.89 +/- 1.39. 76.2% of the dentists expressed that they ask the patients about their medical emergency history. This study shows that the knowledge and information of dentists enhance with an increase in working hours, and decrease with an increase usage and wok experience. Also, it is found that the most prevalent drugs used in dental office as emergency drugs were oxygen and nitroglycerine tablets. This study indicates that some emergency events take place in dental offices in Kerman as in many other countries but, unfortunately, there is not sufficient equipment and facilities to deal with these emergency cases. The present condition can be improved with teaching in universities, holding some educational workshops and preparation of pamphlets

Detection of hepatitis B virus DNA [PCR] in HBsAg negative, anti-HBc positive blood donors in Tehran province

The incidence of post transfusion hepatitis has been reduced by blood donor screening for HBsAg, but the HBV infection is still responsible for certain cases of post-transfusion hepatitis world-wide. An estimate of the rate of HBV DNA and anti-HBc positive units is important for evaluation of the need for anti-HBc blood donor screening. In this study, the HBsAg negative blood units were evaluated for anti-HBc and all of anti-HBc positive units were tested for HBV DNA by PCR method. Extra samples were collected from 2000 HBsAg, anti-HCV, anti-HIV and RPR-negative blood donors. All of the samples were examined by the approved anti-HBc assay. All anti-HBc positive samples were tested by anti-HBs assays and evaluated for HBV DNA [PCR]. The sensitivity of the HBV DNA [PCR] assasy was estimated to be 300 geq/ml according to VQC proficiency panels. 230 [11.5%] out of 2000 samples were positive for anti-HBc. 179 [77.8%] out of 230 anti-HBc positive samples were HBsAb positive, and 51 [23.2%] HBsAb negative. All 230 samples were assayed for single HBV DNA [PCR] 227 of which came out to be negative for HBV DNA [PCR]. Three blood donors were recalled and new samples from two of whom were collected. These new samples were negative for HBV DNA. Further study for evaluation of HBV DNA in anti-HBc positive blood units with full automatic instruments and usage of blood bags with accessories is strongly recommended