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Showing 3 results for Rahmani
Ebrahim Rahmani Moghadam, Vahideh Zarrin, Hadi Keshipour, Mehdi Raei,
Volume 2, Issue 1 (Spring 2020)
Abstract
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Abdolvahed Rahmani, Naser Koosej,
Volume 6, Issue 4 (Winter 2025)
Abstract
Background and Aim: The expansion of industrial and urban activities has led to environmental pollution by heavy metals, posing a significant threat to ecosystems and human health. These contaminants can accumulate along the food chain, increasing their concentration over time. This study investigates the levels of lead (Pb), nickel (Ni), zinc (Zn), iron (Fe), and copper (Cu) in the muscle tissue of Lethrinus nebulosus (Sha’ri fish) from three regions in Hormozgan Province (Dargahan, Bandar Khamir, and Bandar Abbas) due to their ecological and public health significance.
Methods: A total of 180 Lethrinus nebulosus specimens were collected from the three study areas during the summer and winter seasons of 2023. The samples were transported to the laboratory, where biometric analyses were performed. Muscle tissues were excised, dried, ground into powder, and subjected to chemical digestion. The concentrations of Pb, Ni, Zn, Fe, and Cu were then measured using atomic absorption spectrophotometry (Analytik Jena, Germany, Model ContrAA 700).
Results: The results indicated a statistically significant difference (p<0.05) in the concentration of the studied heavy metals in the muscle tissue of Lethrinus nebulosus across the three locations. Dargahan exhibited the highest metal concentrations compared to Bandar Khamir and Bandar Abbas. Additionally, seasonal variations were observed, with significantly higher concentrations of heavy metals in the summer compared to the winter (p<0.05). However, a comparison of metal concentrations with international standards established by the FAO, WHO, and EPA revealed that the detected levels of Pb, Ni, Zn, Fe, and Cu were below permissible limits.
Conclusion: The health risk assessment of consuming Lethrinus nebulosus suggests that, at current consumption rates, the levels of lead, nickel, zinc, iron, and copper do not pose a risk to consumers. However, continuous monitoring is recommended to ensure long-term seafood safety in the region.
Fatemeh Rahmaanian, Navid Kalani, Zhila Rahmanian,
Volume 7, Issue 1 (Spring 2025)
Abstract
Background and Aim: Monitoring acid-base balance through arterial blood gas (ABG) analysis is essential in COVID-19 patients. This study aimed to evaluate arterial blood gases and acid-base status and their association with clinical outcomes in COVID-19 patients admitted to the ICU.
Methods: This retrospective analytical study reviewed medical records of COVID-19 patients admitted to the ICU in Jahrom county during 2020-2021. Arterial blood gas values were collected over the first 10 days of ICU admission and analyzed using repeated measures ANOVA, adjusting for demographic characteristics.
Results: The study analyzed 296 COVID-19 ICU patients (mean age 64.4±17.4 years), revealing a 90.2% mortality rate (n=267) with only 9.8% (n=29) surviving to discharge. Deceased patients exhibited significantly lower pH levels (showing an increasing trend over time), higher PCO₂ levels (with a decreasing trend), and elevated LDH levels (demonstrating an increasing trend) compared to survivors. However, after adjusting for age, sex, and hospitalization duration, repeated measures ANOVA revealed no significant time-dependent effects, group × time interactions, or independent associations between these ABG/acid-base parameters and COVID-19 mortality in the ICU setting.
Conclusion: While deceased COVID-19 patients demonstrated lower pH and higher PCO₂/LDH levels compared to survivors, these parameters did not independently predict mortality in ICU-admitted COVID-19 patients. Further research is needed to fully elucidate the relationship between acid-base balance and COVID-19 outcomes.
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