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目的：对尘肺患者进行运动负荷试验，以探讨运动试验（ＥＴ）与常规肺功能试验（ＰＦＴ）的关系和劳动能力评价。方法：ＥＴ前做ＰＦＴ。ＰＦＴ正常或轻度损害者为受试对象。以运动时最大每分钟通气量（ＶＥｍａｘ）占最大通气量（ＭＶＶ）预计值比≥６４％为受试者最大运动量。ＥＴ最大氧耗量（ＶＯ２ｍａｘ）实测值参照ＣＴＳ标准评定呼吸功能损害程度并与ＰＦＴ比较。结果：３２例尘肺运动时（ＶＥｍａｘ／ＭＶＶ）达到６４．２１％至１０４．４９％者有１２例（ＰＦＴ正常７例，轻度异常５例），运动终止时测得ＶＯ２ｍａｘ为１９．０４±４．１１ｍｌ／ｋｇ。２１例运动时ＳａＯ２％降低者６例，（ＰＦＴ）正常２例，轻度异常４例。以ＶＯ２ｍａｘ参数评定ＰＦＴ正常的７例呼吸功能，其中６例为轻度损害，１例为中度损害。评定ＰＦＴ轻度异常的５例，３例为轻度，２例为中度损害。结论：ＥＴ能发现个别尘肺患者潜在生理学异常。ＶＯ２ｍａｘ参数评价呼吸功能损害较ＰＦＴ敏感。评定个体劳动能力较ＰＦＴ客观。
OBJECTIVE: To investigate the relationship between exercise test (ET) and routine pulmonary function test (PFT) and assessment of work ability in patients with pneumoconiosis. Method: PFT before ET PFT normal or mildly damaged subjects. To exercise the maximum per minute ventilation (VEmax) accounted for the maximum ventilation (MVV) predicted value of ≥ 64% for the subjects maximum exercise. ET maximum oxygen consumption (VO2max) measured values refer to the CTS standard assessment of respiratory impairment and compared with the PFT. Results: In 32 cases of pneumoconiosis (VEmax / MVV) 64.21% to 104.49%, there were 12 cases (7 cases with normal PFT and 5 cases with mild abnormality). The VO2max measured at the end of exercise was 19.04 ± 4.11 ml / kg. In the 21 cases of exercise, the SaO2% decreased in 6 cases, (PFT) normal in 2 cases, mild abnormalities in 4 cases. The VO2max parameters were used to assess the 7 cases of PFT normal respiratory function, 6 cases of mild damage, 1 case of moderate damage. Five patients were evaluated for mild abnormalities of PFT, three were mild and two were moderately impaired. Conclusion: ET can identify potential physiological abnormalities in individual pneumoconiosis patients. VO2max parameter evaluation of respiratory function damage than PFT-sensitive. Assessment of individual ability to work more objective than PFT.