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作 者:荆志成[1] 徐希奇[2] 吴艳[1] 张炜[1] 赵惠英[1] 罗雄[1] 翟丽[3] 蒋鑫[1] 吕豪[3] 张进虎[2]
机构地区:[1]中国医学科学院 北京协和医学院 阜外心血管病医院内科,100037 [2]航空工业中心医院呼吸内科 [3]武警北京总队第二医院心内科
出 处:《中华心血管病杂志》2008年第1期3-6,共4页Chinese Journal of Cardiology
基 金:北京市朝阳区科技计划项目(SF0703)
摘 要:目的探讨国人肺动脉高压患者肺功能特点及其在肺动脉高压诊断中的价值。方法连续入选经右心导管确诊的41例肺动脉高压患者为研究对象,所有患者均进行6分钟步行距离试验和肺功能检查,并与健康对照组比较其肺功能变化特点。结果肺动脉高压组肺总量、肺活量和第1秒用力呼出量百分比对照组明显下降(分别为80.27±11.46和94.24±6.82;79.09±14.89和97.35±9.51;75.40±16.58和95.12±12.01,P〈0.001),残气量与肺总量比值较对照显著升高(分别为117.67±25.73和93.39±10.87,P〈0.001),第1秒用力呼出量与用力肺活量比值百分比与呼气中期流速百分比与对照组分别下降6.0%和19.4%(P=0.21和0.09),一氧化碳弥散量百分比与弥散量/肺泡通气量百分比较对照组分别下降36.6%和29.8%(P〈0.001),呼吸总阻力、总气道阻力和中心气道阻力和与对照组均无明显差异。有12.2%的患者肺功能检查结果完全正常。结论特发性肺动脉高压、先天性心脏病相关性肺动脉高压和结缔组织病相关性肺动脉高压的肺功能改变相似,“动脉型”肺高压患者不仅可以存在不同程度外周气道阻塞性通气功能障碍,同时可合并弥散功能障碍,而肺阻力无明显变化。肺功能检查正常不能作为排除肺动脉高压的筛查手段。Objective To determine the diagnostic value of pulmonary function testing in Chinese patients with known pulmonary arterial hypertension (PAH) without history of lung/heart valve diseases. Methods Pulmonary function testing was performed in 41 PAH patients diagnosed by right heart catheterization and in 17 healthy controls. Results Normal pulmonary function testing results were found in 5 PAH patients (12. 2% ). Total lung capacity, vital capacity and FEV1 were significantly decreased in PAH patients [ (80. 27 ± 11.46) % vs. (94. 24 ± 6. 82) % ; (79.09 ± 14. 89) % vs. (97.35 ± 9. 51 ) % ; (75.40 ± 16. 58)% vs. (95.12 ± 12. 01 )%, respectively, all P 〈0. 001 ], the ratio of residual volume/ total lung capacity was significantly increased [ ( 117.67 ± 25.73 ) % vs. ( 93. 39 ± 10. 87 ) %, P 〈 0. 001 ] ; FEV1/FVC and maximal expiratory flow of 25% to 75% tended to be lower ( -6.0% and - 19.4%, P = 0. 21 and 0. 09) while DLCO and DLCO/VA were significantly decreased by 36.6% and 29. 8% (P 〈 0. 001 ) compared with healthy controls. Conclusions Increased peripheral airway obstruction and normal lung resistance were found in these PAH patients. Normal pulmonary function testing results could not rule out the diagnosis of PAH.
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