Showing 12 results for NASSIRI
P Nassiri, M Jaafari, F Golbabai, M Mahmoodi,
Volume 6, Issue 1 (5-1992)
Abstract
This paper presents a case study to determine the efficiency of the
currently used heat stress indices in correlation with wet bulb globe
temperature (WBGT) as a permissible index at a foundry plant and to
evaluate the extent of the physiological responses such as heart rate and body
temperature in correlation with heat stress indices. The field consisted of a
foundry plant where a shift work was in operation. The results indicated that
wet globe temperature (WGT), corrected effective temperature (CET), and
predicted four-hour sweat rate (P4SR) indices have the best correlation with
WBGT index respectively, and P4SR and CET indices correlate well with
physiological responses more successfully than WBGT does in hot-dry
conditions, CET index gives the best correlation with body temperature
while P4SR is the most accurate with the heart rate.
Parvin Nassiri, Farideh Golbabai, Mahmoud Mahmoudi,
Volume 7, Issue 2 (8-1993)
Abstract
This paper presents noise problems associated with the use of air-turbine drills
in dental practice. Two hundred and fifty dentists (male and female) were randomly
selected from the faculty of dentistry as well as the dentists who worked private in
Tehran. The results indicated that the mean value of sound pressure level produced
by the high-speed drills was 69.1 db. Most of the energy from the drills lied in the high
frequency range, 6000- 8000 Hertz. Audiological evaluations showed that the loss
of hearing in all age groups and years in dental practice lie in 6000 Hertz which has
a positive correlation with the value of sound pressure level in this frequency. The
hearing loss in the right ear of women was slightly higher than the left one, while this
was not true in men. The hearing loss in the female group was greater than in male
group.
Farideh Golbabaie, Parvin Nassiri, Mahmoud Mahmoudl,
Volume 9, Issue 1 (5-1995)
Abstract
In order to assess the risk for mercury poisoning in dentists, urine specimens
were collected and analysed from 250 dentists (190 male, 60 female). Subject data
and pertinent health symptoms were asked via a questionnaire. The results indicate
that the mean and standard deviation of mercury values were 51.3± 38.0 µg/L,
while 27.2 percent of dentists had levels within normal limits (0-19 µg/L). The
results also showed that values for general practitioners tended to be higher, but
was not significant for the specialists. The data demonstrated that there is an
association between health symptoms pertinent to mercury poisoning and urine
mercury values above 50 µg/L
M Vodjgani, F Nassiri Zadeh, J Hadjati, M Akbarlan,
Volume 11, Issue 1 (5-1997)
Abstract
Antineutrophil cytoplasmic autoantibodies (ANCA) were first described in
patients with necrotizing glomerulonephritis. The original observation passed
unnoticed until an association was made between ANCA and active Wegener's
granulomatosis. Since then, tremendous progress has been made in elucidating the
association between ANCA subtypes and clinicopathologic syndromes, and the
potential pathologic role of ANCA in vascular inflammation. The gold standard
method for ANCA detection is indirect immunofluorescence (IIF) microscopy of
ethanol-fixed cells. By this technique two general patterns of ANCA, acytoplasmic
pattern (c-ANCA) and a perinuclear pattern (P-ANCA) can be identifed. Recently
some reports have been published concerning the prevalence, subtypes, role and
specificity of ANCA.ln this study we searched for ANCA prevalence, subtypes,
and its relationship with disease activity in SLE patients by IIF technique. Our
results showed that all normal subjects were ANCA negative, while at least 50%
of patients were ANCA positive (majority c-ANCA type). Statistical analysis
revealed that there is no correlation between the presence of ANCA and disease
activity (p<0.01).
F Mansour Ghanaie , R Nassiri,
Volume 13, Issue 2 (8-1999)
Abstract
Hossien Froutan Pishbijari, Morvarid Asefi Rad, Hadi Ghofrani, Afshin Shafaghi, Mohsen Nassiri Toosi, Shahab Dolatshahi, Ramin Ghadimi, Abdolvahab Yasseri, Mehrnaz Rasteh, Arezoo Samadi, Neda Salarieh,
Volume 20, Issue 3 (11-2006)
Abstract
ABSTRACT
Background: Gastric cancer is one of the most common cancers in our country. Recent studies have shown that adenocarcinoma of the cardia and distal stomach has increased in the past 25 years. However demographic data is lacking in this regard.
Methods: This study is a retrospective case series study. All records from 460 consecutive patients who were documented pathologically to have gastric cancer and had been referred for diagnosis and follow-up to a private clinic from 1992 to 2002 in Tehran were evaluated.
Results: 71 records were dismissed due to incomprehensive data. Among 389 remaining records 68.5% were males mean age was 59.4 years (range 13 to 92 years), 31.1% of patients were 40 years old or less (which is very high). Also 85% (331) of patients had adenocarcinoma and 5.9% (23) had lymphoma, 8.1% (31) had undifferentiated carcinoma while only 1% (4) of cases had gastrointestinal stromal tumor (GIST). 64% of tumors were located in the middle part of the stomach, 19% in the lower and 17% in the upper part. In our study the association between H. pylori and adenocarcinoma was 23.2% in cases younger than 40 years (P<0.001) and 56% in cases older than 40 years. Cases with lymphoma had the highest correlation with H. pylori. There was a significant difference between cancer pathology and sex (P< 0.001).
Conclusion: Our data is somehow in conflict with the western data. We do not recommend blind H. pylori eradication based on positive serology (at least in Tehran) and we suggest conduction of larger multicenter studies in this field in our country.
Mansour Nassiri-Kashani, Mohammad Hassan Nassiri-Kashani, Mostafa Ghafari,
Volume 30, Issue 1 (1-2016)
Abstract
Background: Occupational contact dermatitis, especially in hand, is one of the most common occupational disorders. The present study aimed at evaluating patients with occupational allergic contact dermatitis (ACD) caused by common allergens based on occupation type and disease history.
Methods: This cross-sectional study aimed at evaluating the data of the patients with probable diagnosis of ACD in Center for Research and Training in Skin Diseases and Leprosy (CRTSDL) in Iran. In the present study, 946 patients were assessed from different regions of Iran. One hundred fifty-one cases with positive patch test and relevant exposure were entered into the study; data related to their occupation and disease activity history were evaluated and recorded. Then, factors related to disease activity history were assessed considering the occupational groups and common exposures.
Results: Nickel sulphate was the most common allergen in the 151 patients. Disease activity was constant in 29.8% of the patients; it increased in 27.8%, and decreased just before doing the patch test in 42.4%. Of the patients, 52.3% were getting worse during the working days. Occupational groups were significantly different in age and gender. Disease duration was also different in the occupational groups (p=0.001). The least disease duration was observed in healthcare workers, and the most in service workers. Lesions in the foot were related to period of employment. In administrative work group, (teachers, technicians and housewives) disease activity was decreased in the most cases, while it was increased in most patients of service workers (p=0.086).
Conclusion: The present study, similar to previous reports, revealed that nickel sulphate is the most common allergen in ACD cases. Moreover, it was found that the symptoms of disease activity remained constant or increased in a significant proportion of the cases during the working days. Therefore, these workers should seriously follow up on this matter and change their occupation, or limit the exposure to allergens.
Amir Bahrami-Ahmadi, Seyed Alireza Mortazavi, Roghayeh Soleimani, Mohammad Hasan Nassiri-Kashani,
Volume 30, Issue 1 (1-2016)
Abstract
Background: There are some challenges about the role of work- related stress on development of musculoskeletal complaints. The present prospective study was conducted on nurses of Milad hospital in Tehran (Iran) to assess the role of work- related stress on development of neck and shoulder pain among nurses.
Methods: From the 1,900 nurses who completed the registry forms, 1,450 nurses met the inclusion criteria. We divided the participants into exposed and unexposed groups according to their DASS-21 scores. We collected the data of neck and shoulder pain among the nurses at two points of the first and the second year after the study, using the Nordic Questionnaire. Qualitative and quantitative variables were compared between the exposed and unexposed variables with chi-square and independent sample t-test, respectively.
Results: One year after the commencement of the study, 62 (9.1%) nurses in the exposed group and 36 (4.7%) in the unexposed group had been reported as new cases of neck and shoulder pain, respectively. The incidence of the new cases of neck and shoulder pain was significantly higher in the exposed group compared to the unexposed group (p= 0.001). Two years after the start of the study, at the second follow-up point, 135 (19.8%) nurses in the exposed group and 76 (9.9%) in the unexposed group had been reported as new cases of neck and shoulder pain, respectively. The incidence of new cases of neck and shoulder pain was significantly higher in the exposed group compared to the unexposed group (p<0.001).
Conclusions: The incidence of neck and shoulder pain was higher in those nurses with high level of work- related stress. According to our results, more attention should be paid to mental health as well as physical symptoms and limitations of the healthcare workers when they refer to occupational health services with musculoskeletal pain complaints.
Naser Dehghan, Mashallah Aghilinejad, Mohammad Hassan Nassiri-Kashani, Ziba Amiri, Atefeh Talebi,
Volume 30, Issue 1 (1-2016)
Abstract
Background: Work-related musculoskeletal disorders (WMSDs) are the most common occupational injuries in dentists. These disorders occur due to the specific characteristics of dentistry occupation such as the use of tools and instruments and awkward posture. The present study aimed at evaluating the effect of multifaceted ergonomic program on reducing musculoskeletal disorders in dentists.
Methods: One hundred-two male dentists who worked in dentistry clinics of Tehran's hospitals participated in this interventional study. Participants were randomly divided into control (n=50) and intervention (n=52) groups. Dentists in the intervention group (n=52) underwent multifaceted ergonomic intervention program for 8 weeks and dentists in the control group (n=50) only received the measurements. The prevalence of musculoskeletal disorders was evaluated in each of the 2 groups at 3 time points before the intervention, 3, and 6 months after the intervention using the Nordic Musculoskeletal Questionnaire (NMQ). Paired t-test was used to compare the prevalence of musculoskeletal disorders before and after the ergonomic intervention program at the end of 3 and 6 months.
Results: The results revealed that the prevalence of musculoskeletal disorders was reduced after the intervention in the neck, shoulder, arm, wrist, back, thigh, knees, and feet (p<0.05). On the other hand, the prevalence of musculoskeletal disorders increased in the control group in the neck, shoulder, arm, wrist, thigh, and knee, respectively. The survey results revealed that 98% of the participants agreed with this intervention program.
Conclusion: The results of this study revealed that the multifaceted ergonomic intervention program, which included improving working conditions, identifying ergonomic risk factors, regular exercise, and discussion group meetings, could decrease the prevalence of musculoskeletal disorders in dentists.
Fariba Jahangiri, Mahmoud Salek, Seyed Javad Nassiri, Fariborz Samadi, Mina Koohian Mohammadabadi,
Volume 36, Issue 1 (1-2022)
Abstract
Background: Identifying possible complications accompanying central venous catheterization may improve the results. The current study was conducted to clarify the complication rate among port-a-cath implantation in children referred to Ali-Asghar hospital from 2011 to 2015. This study was designed to determine complication rates among the pediatric population who underwent port-a-cath implantation for chemotherapy.
Methods: The current observational study reviewed the medical documents of children who were referred to Ali-Asghar hospital from 2011 to 2015. Factors such as underlying disease, demographic characteristics, complications and their management were considered. We analyzed the results of this study using multivariate logistic regression.
Results: A total number of 100 patients met the eligibility criteria. In Thirty-two cases, chemoport catheters were removed due to complication management or termination of adjuvant chemotherapeutic treatment. Fifty-one boys and forty-nine girls enrolled in the study. The mean duration of catheter preservation defined per patient was 693 days ±1 year SD. 14 catheters were removed followed by planned treatment termination, while 18 catheters were complicated due to port dysfunction, infection, skin necrosis, and extravasation, hematoma in order of decreasing.
Conclusion: Chemo port utilization is mandatory in pediatric patients with cancers demanding adjuvant treatment. The possible complications would be managed by a variety of protocols. Respecting anti-septic principles by trained personnel will prevent the majority of associated complications.
Hassan Amiri, Amir Bahrami-Ahmadi, Mohammad Hassan Nassiri- Kashani, Mashalah Aghilinejad, Elaheh Kabir Mokamelkhah, Faezeh Mohammadi,
Volume 37, Issue 1 (2-2023)
Abstract
Background: Noise induced hearing loss (NIHL) is an irreversible occupational disease among industrial workers. Recent studies have reported that changes in some metabolic factors such as the serum level of sugar and lipids might have a role in suffering from NIHL among workers exposed to noise. We designed this study to assess the association between lipid profile changes and NIHL occurrence among noise-exposed workers.
Methods: This case-control study has been conducted according to noise-exposed workers registry data in one of the Iranian automobile factories between 2007 and 2017. We classified study workers into the NIHL and control groups. We assessed the impact of lipid profile parameters across the study groups using the independent samples t-test, chi-square, and regression.
Results: The mean serum level of cholesterol was significantly higher in the NIHL group than in workers of the control group (215.27 ± 60.30 vs 204.49 ± 63.69 mg/dL; P = 0.041). Moreover, the serum level of HDL was significantly lower in workers in the NIHL group compared with the control group (35.21 ± 6.87 vs 37.43 ± 7.28 mg/dL; P < 0.001). Although other lipid profile parameters (LDL, TG, LDL/HDL ratio) were higher among workers of the NIHL group, their differences were not significant.
Conclusion: A cholesterol level lower than 200 mg/dL is known as a protective factor and an HDL level lower than 40 mg/dL is an NIHL risk factor. More attention should be paid to controlling serum levels of cholesterol and HDL.
Majid Khosravi, Aziz Rezapour, Najmeh Moradi, Setare Nassiri Zeidi, Namamali Azadi,
Volume 38, Issue 1 (1-2024)
Abstract
Background: Spinal muscular atrophy is an inherited neurodegenerative disorder that typically leads to severe physical disability. The present study aimed to determine the subjective evaluation of this disorder screening and analyze its influencing factors in Iran.
Methods: A cross-sectional study was performed using data from the second survey of women either pregnant or planning to become pregnant in Tehran, the capital of Iran, in 2022. The dependent variable was the willingness to pay for this disease screening test. The independent variables included sociodemographic, economic, and health characteristics, the history of this disease or other diseases of the person and family, and knowledge about this disease in the included population. Logistic regression was utilized to identify independent variables associated with the dependent variable, and the results were reported as unadjusted and adjusted odds ratios and P values with 95% CIs. A questionnaire was used as a research tool, and STATA 17 software was used for data analysis. The monetary value of spinal muscular atrophy (SMA) screening was calculated by estimating willingness to pay using the congenital valuation method.
Results: In total, 578 women were included. About 64.85% of respondents had a willingness to pay for SMA screening as the dependent variable, with a mean of $526. University education (P = 0.009) and pregnancy experience (P = 0.021) were associated with the dependent variable.
Conclusion: Iranian women expressed their willingness to undergo screening tests, but due to financial constraints, they expected the government and nongovernmental organizations to bear most of the cost.
