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首页> 外文期刊>Occupational and environmental medicine >Lung function over the first 3 years of a professional diving career.
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Lung function over the first 3 years of a professional diving career.

机译：在专业潜水生涯的前3年中，肺功能正常。

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OBJECTIVES: To characterise diving exposure and pulmonary function in professional divers at the start of their formal education and during the first 3 years of their professional career. METHODS: The study included 87 men at the start of their education as professional divers. At follow up 1 and 3 years after the school 83 and 81 divers respectively were re-examined. Assessment of lung function included dynamic lung volumes and flows and transfer factor for carbon monoxide (Tl(CO)). RESULTS: 69 Divers had preschool SCUBA diving experience and had a median number of 70 dives (range 2-3000) to a median maximal depth of 40 (range 10-73) metres. During the 15 week introductory diving course, they had 44 dives (range 38-50) in the depth range 10-50 metres. The median number of dives over the follow up period was 95 (range 0-722) to a maximal median depth of 38 (range 0-98) metres. At the start of the diving course there were no differences in forced vital capacity (FVC), forced expired volume in 1 second (FEV(1)), and in Tl(CO) between the 69 pre-exposed divers and the 18 never exposed divers. The FVC was significantly larger than predicted in both groups. At follow up at 3 years there was a significant reduction in mean (SD) FEV(1) of 1.8% (6.5), in forced mid-expiratory flow rate (FEF(25-75%)) of 6.5% (11.7) and in forced expiratory flow at 75% of FVC expired (FEF(75%)) of 10.4% (16. 8). There was no change in FVC. The Tl(CO) was significantly decreased by 4.6% (8.8). No significant effects were found of cumulative diving exposure, including the number of dives, on the relative changes of any of the lung function variables. CONCLUSIONS: The results indicate that divers initially belong to a selected group with large FVC. Exposure to diving may contribute to changes in pulmonary function, mostly affecting small airways conductance.
机译：目的：在职业潜水员接受正式教育时和职业生涯的前三年中，对潜水员的潜水暴露和肺功能进行表征。方法：该研究包括87名开始接受职业潜水员培训的男性。随访1年和3年后，分别对83名和81名潜水员进行了重新检查。肺功能的评估包括动态肺体积和流量以及一氧化碳（Tl（CO））的转移因子。结果：69位潜水员具有学龄前SCUBA潜水经验，平均潜水次数为70次（范围2-3000），最大潜水深度的中位数为40米（范围10-73）。在为期15周的入门潜水课程中，他们进行了44次潜水（范围38-50），潜水深度为10-50米。随访期间潜水的中位数为95（范围为0-722）至最大中值深度为38（范围为0-98）米。在潜水过程开始时，在69位预先暴露的潜水员和18位从未接触过的潜水员之间，强制肺活量（FVC），1秒内强制呼出气量（FEV（1））和Tl（CO）之间没有差异。潜水员。 FVC明显大于两组的预测值。在3年的随访中，平均（SD）FEV（1）显着降低了1.8％（6.5），强迫呼气中流速（FEF（25-75％））降低了6.5％（11.7）， FVC的75％的强制呼气流量（FEF（75％））为10.4％（16. 8）。 FVC没有变化。 Tl（CO）显着降低了4.6％（8.8）。没有发现累积潜水暴露（包括潜水次数）对任何肺功能变量的相对变化有显着影响。结论：结果表明，潜水员最初属于具有较大FVC的选定群体。潜水可能会导致肺功能改变，主要影响小气道传导。

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