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中国应用生理学杂志 ›› 2015, Vol. 31 ›› Issue (4): 345-351.doi: 10.12047/j.cjap.0117.2015.012

• 研究论文 • 上一篇    下一篇

代谢、血液碱化和纯氧影响呼吸调控的人体实验研究II: 血液碱化后运动试验*

孙兴国1,2,△, William W. Stringer2, 尹希1,3, 葛万刚1, 王桂芝2,4, 吕婧1,2,5, 刘方1,4, 慈政1,4, Karlman Wasserman2   

  1. 1.中国医学科学院 北京协和医学院 国家心血管病中心阜外医院 心血管疾病国家重点实验室,心血管病国家临床医学研究中心, 北京 100037;
    2.美国加州大学洛杉矶分校Harbor-UCLA 医学中心内科学系,洛杉矶生物医学研究院,圣约翰心血管研究中心,美国加州90502;
    3.河北医科大学第四人民医院功能科,石家庄 050000;
    4.山东省潍坊医学院麻醉学系临床麻醉学教研室和临床医学系,潍坊261061;
    5.广州市第一人民医院麻醉科,广州 510180
  • 收稿日期:2015-06-05 修回日期:2015-07-05 发布日期:2021-11-12
  • 通讯作者: Tel: 010-88398300, E-mail: xgsun@labiomed.org
  • 基金资助:
    *国家自然科学基金医学科学部面上项目(81470204); 国家高新技术研究发展计划(863计划)课题(2012AA021009); 中国医学科学院国家心血管病中心科研开发启动基金(2012-YJR02)

Human experiments of metabolism, blood alkalization and oxygen effect on control and regulation of breathing II: room air exercise test after blood alkalization

SUN Xing-guo1,2,△, STRINGER WW2, YIN Xi1,3, GE Wan-gang1, WANG Gui-zhi2,4, LV Jing1,2,5, LIU Fang1,4, CI Zheng1,4, WASSERMAN K2   

  1. 1. State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Research Center of Clinic Medicine for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China;
    2. Department of medicine, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, University of California at Los Angeles, St. John's Cardiovascular Research Center, California 90502;
    3. The 4th People's Hospital Affiliated Hebei Medical University, Shijiazhuang 050000;
    4. Departments of Anesthesiology and Clinical Medicine, Weifang Medical University, Weifang 261061;
    5. Department of Anesthesiology, the 1st People's Hospital of Guangzhou, Guangzhou 510180, China
  • Received:2015-06-05 Revised:2015-07-05 Published:2021-11-12

摘要: 目的: 在完成吸入室内空气状态下症状限制性最大极限心肺运动试验(CPET)和动脉血气指标动态变化规律的基础上,进一步探讨体液酸碱度和CO2含量对呼吸调控的影响。方法: 选正常志愿者5名,给予5%NaHCO3(总量0.3 g/kg)分次口服,每5 min口服75 ml(3.75g )。总量服完1 h后,重复CPET。于静息、热身、运动及恢复期,连续测定肺通气指标及每分钟动脉取样的血气指标变化,并与本人在非碱化血液条件下对照数据进行配对t检验比较。结果: 碱化血液之后,CPET期间随着运动功率逐步递增,气体交换和血气指标的反应模式与非碱化血液对照相似(P>0.05);即与静息状态比较,每分通气量、潮气量、呼吸频率、VO2、VCO2均呈现近于线性渐进性递增(P<0.05~0.001)。与碱化血液前吸入室内空气的对照比较:在碱化血液条件下,所有时间点血红蛋白浓度,PaCO2与pH均显著提高(P<0.05);除无氧阈PaCO2减低外,只有热身状态呈增高态势,统计学有显著差异(P<0.05);而PaO2无差异(P>0.05),各状态均较对照状态减低,除恢复期外均有统计学差异(P<0.05)。与非碱化血液对照比较,除静息每分通气量低于对照(P<0.05)外,所有通气指标均无统计学差异(P>0.05)。结论: 碱化血液条件下, 尽管有更高的CaCO2, PaCO2 和 pHa平均水平及更低的Hba和[H+]a平均水平,机体对CPET的呼吸反应模式基本相似。

关键词: 碱化血液, 心肺运动试验, 呼吸反应模式, 室内空气, 呼吸频率, 潮气量, 分钟通气量

Abstract: Objective: Basis on the dynamic changes of the ventilation and arterial blood gas parameters to symptom-limited maximum cardiopulmonary exercise testing (CPET),we further investigate the effect of alkalized blood by drinking 5% NaHCO3 on ventilation during exercise. Methods: After drinking 5% NaHCO375 ml (3.75 g) every 5 min, total dosage of 0.3 g/Kg, 5 volunteers repeated CPET. All CPET and ABG data changes were analyzed and calculated. At the same time, CPET and ABG parameters after alkalized blood were compared with those before alkalized blood (control) used paired t test. Results: After alkalized blood, CPET response patterns of parameters of ventilation, gas exchange and arterial blood gas were very similar (P>0.05). All minute ventilation, tidal volume, respiratory rate, oxygen uptake and carbon dioxide elimination were gradually increased from resting stage (P<0.05~0.001), according to the increase of power loading. During CPET after alkalized blood,ABG parameters were compared with those of control: hemoglobin concentrations were lower,CaCO2 and pHa were increased at all stages(P<0.05). The PaCO2 increased trend was clear, however only significantly at warm-up from 42 to 45 mmHg (P<0.05). Compared with those of control, only the minute ventilation was decreased from 13 to 11 L/min at resting (P<0.05). Conclusion: Even with higher mean CaCO2, PaCO2 and pHa, lower Hba and [H+]a, the CPET response patterns of ventilatory parameters after alkalized blood were similar.

Key words: blood alkalization, cardiopulmonary exercise testing, respiratory response pattern, room air, respiratory frequency, tidal volume, minute ventilation

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