Background: Noise pollution has seriously negative effects on worker\u2019s health, especially their hearing ability. Occupational hearing loss is one of 21 insured occupational diseases. Occupational hearing loss is common in workers in transpostation, construction, energy heavy and light industry areas. Objectives: 1. To determine the degree of noise pollution in Thua Thien Hue Unity Auto Mechanical Joint Stock Company. 2. To evaluate occupational failing hearing and occupational hearing loss among workers in the company. 3. To promote preventive measures which imnimize occupational failing hearing and occupational hearing loss. Subjects and method:A cross-sectional, descriptive study was carried out in 254 employees in Thua Thien Hue Unity Auto Mechanical \r\n', u'Joint Stock Company. Results and Conclusion: 72.7% the employees of Thua Thien Hue Unity Auto Mechanical \r\n', u'Joint Stock Company have exposed to environmental noise at the level higher than the permitted one. The rate of occupational failing hearing among these people is rather high (33.1%), and occupational hearing loss rate is 11.8%. There is a increased rate of occupational hearing loss according to the employee\u2019s age and seniority. Proposed preventive measures should be immediately conducted (P < 0.05).\r\n', u'
Hearing Loss ; Noise-Induced/ epidemiology ; etiology ; pathology ;

Background: The fetus having risk for Down sydrome (DS) can be detected early by AFP, \u03b2hCG in maternal serum to detect the fetus having risk of Down sydrome. Objectives: Determining values of AFP, \u03b2hCG in maternal serum to detect the fetus having risk of DS. Subjects and method: Determining the concentration of AFP, \u03b2hCG in maternal serum of 591 pregnant with fetus \ufffd?12 weeks to detect the fetus having DS screening risk. The fetus are diagnosed DS by analysing chromosome from amniocyte and monitor up to the neonate. Then, finding out association between DS fetus and AFP, \u03b2hCG in maternal serum. Results: 75/591 of subjects screened were screen positive, 6/7 DS fetus associated withscreen positive, (cut off AFP \ufffd?0,75 MoM, \u03b2hCG \ufffd?2,2 MoM). Detection rate (DR) was 85,71%; false positive rate (FDR): 11,81%. Only base on AFP: DR was 71,43%; FDR: 11,81%. Only base on \u03b2hCG DR was 28,57%; FDR: 0,51%. Conclusion: DR base on AFP is higher than base on \u03b2hCG. If combining AFP and \u03b2hCG, DR is the highest. AFP is important role in screening DS fetus.
Down Syndrome/ diagnosis ; Predictive Value of Tests ; Prenatal Diagnosis ; Pregnancy ;

Background: Sodium bicarbonate is highly alkaline and may be helpful in relieving symptoms of gout. Sodium bicarbonate helps to adjust your body's pH level, slightly creating an alkaline-forming state that lessens the likelihood of gout attacks. We can prepare sodium bicarbonate in several ways to treat gout symptoms. Objective: To examine the efficacy of sodium bicarbonate for treatment of gout. Subjects and method: A study was conducted in 54 patients with gout at Department of Rheumatology of Bach Mai hospital, from September 2006 to March 2007. Patients were divided into two groups, group 1 included 29 patients treated with intravenous sodium bicarbonate and group 2 included 25 patients treated with oral sodium bicarbonate. This was a descriptive, cross-sectional study. Results: No significant changes showed between serum uric acid level, 24-hour urine uric acid level at before and after treatment in 2 groups. Gout patients with renal failure had increased level of 24-hour urine uric acid after treatment (p < 0.05). There were significantly increased level of urine volume, urine pH and decreased level of urine specific gravity after treatment. The effect of sodium bicarbonate was not different between intravenous usage and oral usage. Conclusion: Sodium bicarbonate could change urine environment, limit crystallization of urine uric acid of gout patients.
Gout/ therapy

Background: Surveys in disability are getting more and more attention from the Governments and contributes towards improve service provision for people with disabilities. Objective: To describe the prevalence of people with disabilities at The Chi Linh demographic and epidemiological surveillance system (CHILILAB), Hai Duong province in 2007. Subject and Method: The cross - cutting survey conducted in the CHILILAB which has a population of 65.438 people, the WHO questionnaire of disability screening was used. Result and conclusion: Disability prevalence in Chi Linh occurs in 28.2% of the population. It is noted that the disability prevalence increases significantly with age groups: 81.8% of those who are over 60, 58.2% those aged of 40 - 59 and only 8 - 9% of those aged under 40. In addition, the disability prevalence is higher in the rural areas, women, the poor and the illiterate. It is necessary to have more study on the prevalence of people with disabilities in wider ranges. \r\n', u'\r\n', u'\r\n', u'
Prevalence ; Disability prevalence ; Disability

Background: People with disabilities have been coping with barriers that make it difficult for them to access public services. Many of them are poor, illiterate and out of work. Objective: To describe some characteristics of disabled people living in the communities of Chi Linh district, Hai Duong province. Subject and methods: Interview all of the 18.473 disabled people living in the seven communities of Chi Linh district, Hai Duong province. The contents of the interviews includes: economic-social information (income, education, job and martial status) and disability status (disability form and cause). Results: Nearly three fourths of disabled people are at the age of 45 and over. There are more women than men, with the male/female ratio at 1:1.8. Almost all of the disabled people are the Kinh in Chi Linh and 10.8% of them belong to the poor households. One in ten disabled people are illiterate and two thirds of disabled adolescents are at lower secondary school or lower. Difficulty in seeing is the most common among the kinds of disabilities, accounting for 81.9% of disabled people and about three fourths with one disability. Among the causes of disability, aging accounts for 71.5%, this is followed by illness. Conclusion: There is the need to reduce the rate of disability at the age of 45 and over, reducing the rate of sight related difficulties and increasing the accessibility of disabled people to educational services.
disability persons ; characteristics

Background: In Viet Nam, there were many researches on determining lead level in blood, food and environment. But until now, there were not researches on determining lead level in fishermen community. Objectives: Determine trace amount of lead by von-ampe dissolve anot using electrode BiFE. Analysis on trace amount of lead in blood and urine of fishermen in Canh Duong village. Propose solutions for preventing lead poisoning in studied community. Subjects and method: Fishermen in Canh Duong village, Phu Loc, Thua Thien Hue province. The method differential pulse-anodic stripping voltametry (DP-ASV) using Bismuth Film Electrodic in situ was successfully applied to measure lead levels in blood and 24h urine of fishermen in Canh Duong village. Results: The mean level of lead in blood of the suspected group (fishermen) in Canh Duong village (34,7 \xb5g/dL) was higher than that of the control group (16,3 \xb5g/dL). For both groups, 37 out of 40 blood samples (92,5%) had lead level higher than WHO\u2019s recommended level (10 \xb5g/dL). Especially, 6 of 40 blood samples (15%) had lead level higher than 50 \xb5g/dL. The lead level in 24h urine of suspected group had slightly higher (about 1,2 times) than that in the control group. The lead level of the two groups was much higher than the normal level. Conclusion: The method DP-ASV/BiFE in situ was applied successfully to determine lead level in blood and 24h urine. The investigative results of related information showed that: the risk of chronic lead poisoning in studied community very high.
Lead/ adverse effects ; chemistry ; antagonists & ; inhibitors ;

Background: Recently, microplate almar blue assay has been used commonly in detecting gen related to tuberculosis drug resistance, which provides results after 5-7 days with lower cost compared to traditional methods. Objective: To evaluate the application of microplate almar blue assay for rapid detection of drug resistance of M. tuberculosis strains. Subject and Method: A microplate-based assay which uses Alamar blue reagent - an oxidation reduction dye (MABA), was used for the determination of the anti-tuberculosis drug (isoniazid-INH, rifampicine-RIF, streptomycine-STR and ethabuton=EMB) resistance of 96 M. tuberculosis strains isolated from Vietnamese patients in comparison to those obtained by conversional method. Result: MABA showed to have high sensitivity and specificity in testing the sensitivity to individual anti-tuberculosis drugs (from 82.4% for STR to 93.3% for - INH and from 82.5% for EMB to 98.4% for STR; respectively), as well as for the multi-drug resistant M.tuberculosis (86.4% of sensitivity), highly correlated with the result determined by proportion method. Conclusion: MABA reveals the advantage in shortening test time, in simple performance and lower cost compared with the conversional culture based methods.
Microplate almar blue assay ; M. tuberculosis ; drug resistance

Background: s/Aims: Hepatolithiasis and choledocholithiasis are frequent pathologies and unfortunately, with the current treatment strategies, the recurrence incidence is still high. This study aimed to assess the outcomes of laparoscopic choledochotomy using cholangioscopy via the percutaneous-choledochal tube for the treatment of hepatolithiasis and choledocholithiasis in Vietnamese patients. Methods: A cross-sectional study of patients with hepatolithiasis and/or choledocholithiasis who underwent laparoscopic choledochotomy using intraoperative cholangioscopy via percutaneous-choledochal tube at the Department of Hepatopancreatobiliary Surgery, 108 Military Central Hospital, from June 2017 to March 2020. Results: A total of 84 patients were analyzed. Most patients were females (56.0%) with a median age of 55.56 years. Among them, 41.8% of patients had previous abdominal operations, with 33.4% having choledochotomy. All patients underwent successful laparoscopic common bile duct exploration followed by T-tube drainage without needing to convert to open surgery. Most patients (64.3%) had both intrahepatic and extrahepatic stones. The rate of stones ≥ 10 mm in diameter was 64.3%. Biliary strictures were observed in 19.1% of patients during cholangioscopy. Complete removal of stones was achieved in 54.8% of patients. Intraoperative complications were encountered in two patients, but there was no need to change the strategy. The mean operating time was 121.85 ± 30.47 minutes.The early postoperative complication rate was 9.6%, and all patients were managed conservatively. The residual stones were removed through the T-tube tract by subsequent choledochoscopy in 34/38 patients, so the total success rate was 95.2%. Conclusions Laparoscopic choledochotomy combined with cholangioscopy through the percutaneous-choledochal tube is a safe and effective strategy for hepatolithiasis and/or choledocholithiasis, even in patients with a previous choledochotomy.

Background: s/Aims: Hepatolithiasis and choledocholithiasis are frequent pathologies and unfortunately, with the current treatment strategies, the recurrence incidence is still high. This study aimed to assess the outcomes of laparoscopic choledochotomy using cholangioscopy via the percutaneous-choledochal tube for the treatment of hepatolithiasis and choledocholithiasis in Vietnamese patients. Methods: A cross-sectional study of patients with hepatolithiasis and/or choledocholithiasis who underwent laparoscopic choledochotomy using intraoperative cholangioscopy via percutaneous-choledochal tube at the Department of Hepatopancreatobiliary Surgery, 108 Military Central Hospital, from June 2017 to March 2020. Results: A total of 84 patients were analyzed. Most patients were females (56.0%) with a median age of 55.56 years. Among them, 41.8% of patients had previous abdominal operations, with 33.4% having choledochotomy. All patients underwent successful laparoscopic common bile duct exploration followed by T-tube drainage without needing to convert to open surgery. Most patients (64.3%) had both intrahepatic and extrahepatic stones. The rate of stones ≥ 10 mm in diameter was 64.3%. Biliary strictures were observed in 19.1% of patients during cholangioscopy. Complete removal of stones was achieved in 54.8% of patients. Intraoperative complications were encountered in two patients, but there was no need to change the strategy. The mean operating time was 121.85 ± 30.47 minutes.The early postoperative complication rate was 9.6%, and all patients were managed conservatively. The residual stones were removed through the T-tube tract by subsequent choledochoscopy in 34/38 patients, so the total success rate was 95.2%. Conclusions Laparoscopic choledochotomy combined with cholangioscopy through the percutaneous-choledochal tube is a safe and effective strategy for hepatolithiasis and/or choledocholithiasis, even in patients with a previous choledochotomy.

Background: s/Aims: Hepatolithiasis and choledocholithiasis are frequent pathologies and unfortunately, with the current treatment strategies, the recurrence incidence is still high. This study aimed to assess the outcomes of laparoscopic choledochotomy using cholangioscopy via the percutaneous-choledochal tube for the treatment of hepatolithiasis and choledocholithiasis in Vietnamese patients. Methods: A cross-sectional study of patients with hepatolithiasis and/or choledocholithiasis who underwent laparoscopic choledochotomy using intraoperative cholangioscopy via percutaneous-choledochal tube at the Department of Hepatopancreatobiliary Surgery, 108 Military Central Hospital, from June 2017 to March 2020. Results: A total of 84 patients were analyzed. Most patients were females (56.0%) with a median age of 55.56 years. Among them, 41.8% of patients had previous abdominal operations, with 33.4% having choledochotomy. All patients underwent successful laparoscopic common bile duct exploration followed by T-tube drainage without needing to convert to open surgery. Most patients (64.3%) had both intrahepatic and extrahepatic stones. The rate of stones ≥ 10 mm in diameter was 64.3%. Biliary strictures were observed in 19.1% of patients during cholangioscopy. Complete removal of stones was achieved in 54.8% of patients. Intraoperative complications were encountered in two patients, but there was no need to change the strategy. The mean operating time was 121.85 ± 30.47 minutes.The early postoperative complication rate was 9.6%, and all patients were managed conservatively. The residual stones were removed through the T-tube tract by subsequent choledochoscopy in 34/38 patients, so the total success rate was 95.2%. Conclusions Laparoscopic choledochotomy combined with cholangioscopy through the percutaneous-choledochal tube is a safe and effective strategy for hepatolithiasis and/or choledocholithiasis, even in patients with a previous choledochotomy.