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:: Volume 3, Issue 4 (winter 2018) ::
3 2018, 3(4): 222-228 Back to browse issues page
Evaluating the Effect of Duration of Exposure to Chronic Intermittent Hypoxia at High Altitude on Blood Hematocrit and Hemoglobin Levels in Copper Mine Workers
A Mozaffari, P Mohammadi , M Gholami
Hamadan University of Medical Sciences
Abstract:   (293 Views)
Background & objectives: Intermittent hypoxia or periodic exposure to hypoxia occurs in many circumstances especially in people who frequently ascend to mountain. The aim of this study was to evaluate the effect of exposure time to chronic intermittent hypoxia at high altitude on blood hemoglobin and hematocrit levels in a group of copper mine workers.
Methods: In this descriptive-analytical study, blood hemoglobin and hematocrit levels of 71 workers were studied. Workers were included in the study based on census sampling method and evaluated in 2 conditions: when workers were living and working at 2500 m altitude as well as when they had migrated to 1500 m altitude while working daily for one work shift at 2500 m altitude. The data about the level of blood factors were collected from complete blood count test results, available in their medical histories.
Results: The mean levels for blood hemoglobin and hematocrit of workers who were exposed to hypoxia at 2500 m altitude for one work shift were less than who were living permanently at that altitude (p<0.001). Decreased exposure time to hypoxia from 24 to 10 hours/day made hemoglobin and hematocrit levels to be reduced by 9.6% and 6%, respectively.
Conclusion: This study showed that in chronic intermittent exposure to hypoxia at high altitude, the levels of hemoglobin and hematocrit were dependent to exposure time duration.
Keywords: Hematocrit, Hemoglobin, High Altitude, Hypoxia, Mine
Full-Text [PDF 109 kb]   (56 Downloads)    
Type of Study: Research | Subject: General
Received: 2019/06/8 | Accepted: 2019/06/8 | Published: 2019/06/8
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Mozaffari A, Mohammadi P, Gholami M. Evaluating the Effect of Duration of Exposure to Chronic Intermittent Hypoxia at High Altitude on Blood Hematocrit and Hemoglobin Levels in Copper Mine Workers. 3. 2018; 3 (4) :222-228
URL: http://oeh.arums.ac.ir/article-1-160-en.html


Volume 3, Issue 4 (winter 2018) Back to browse issues page
فصلنامه سلامت محیط و کار Occupational and Environmental Health
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