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中国应用生理学杂志 ›› 2021, Vol. 37 ›› Issue (1): 1-8.doi: 10.12047/j.cjap.0099.2021.098

• 研究论文 •    下一篇

新生儿首次呼吸前后脐带动静脉血液氧和二氧化碳变化探索呼吸调控机制的初步报告I—血液氧和二氧化碳分压脐带动静脉差值的组间分析*

刘方1, 孙兴国, 李启威2, 葛万刚1, 李浩1, 刘艳玲1, 慈政1,3, 陈升平2, 宋桂芹2, 王桂芝1,3, 谭晓越1, 崔闫1, 张也1, 朱嘉宝1,4, 李银俊1,5, 邓维1,6, 黄燕1,7, 马铭欣1,7, 陈荣1,7, 邹昱馨1,8, 台文琦1, 徐凡1, 石超1   

  1. 1.国家心血管病中心 中国医学科学院阜外医院 心血管疾病国家重点实验室 国家心血管疾病临床医学研究中心,北京协和医学院,北京 100037;
    2.国家电网公司北京电力医院,北京 100073;
    3.潍坊医学院, 山东 潍坊 261053;
    4.河北医科大学第二医院,石家庄 050000;
    5.兰州市城关区康乐医院,甘肃 兰州 730030;
    6.重庆医科大学附属康复医院,重庆 400050;
    7.辽宁省大连儿童医院,大连 116000;
    8.聊城市立医院儿童医院,山东 聊城 252000
  • 收稿日期:2020-08-12 修回日期:2021-01-05 发布日期:2021-10-21
  • 通讯作者: Tel:010-88398300;E-mail: xgsun@lundquist.org
  • 基金资助:
    *国家高技术研究发展计划(863计划)课题资助项目(2012AA021009); 国家自然科学基金医学科学部面上项目(81470204); 中国康复医疗机构联合重大项目基金(20160102); 中国医学科学院国家心血管病中心阜外医院科研开发启动基金(2012-YJR02); 首都临床特色应用研究与成果推广(Z161100000516127); 北京康复医院2019-2021科技发展专项(2019-003); 北京协和医学院教学改革项目(2018E-JG07); 北京协和医学院-国家外国专家局外国专家项目(2015,2016,T2017025,T2018046,G2019001660); 重庆市卫计委医学科研计划项目(2017MSXM090); 重庆市科委社会事业与民生保障科技创新专项项目(cstc2017shmsA130063)

Preliminary report on partial pressure changes of oxygen and carbon dioxide in umbilical artery and vein before and after the first breath in Chinese neonates I—The group difference of partial pressure of oxygen and carbon dioxide between umbilical artery and vein in newborns

LIU Fang1, SUN Xing-guo, LI Qi-wei2, GE Wan-gang1, LI Hao1, LIU Yan-ling1, CI Zheng1,3, CHEN Sheng-ping2, SONG Gui-qin2, WANG Gui-zhi1,3, TAN Xiao-yue1, CUI Yan1, ZHANG Ye1, ZHU Jia-bao1,4, LI Yin-jun1,5, DENG Wei1,6, HUANG Yan1,7, MA Ming-xin1,7, CHEN Rong1,7, ZOU Yu-xin1,8, TAI Wen-qi1, XU Fan1, SHI Chao1   

  1. 1. Department of Cardiology,Fuwai Hospital,Chinese Academy of Medical Sciences/National Center for Cardiovascular Diseases/ State Key Laboratory of Cardiovascular Diseases/Chinese Academy of Medical Sciences/Peking Union Medical College,Beijing 100037;
    2. Electric Power Teaching Hospital of Capital Medical University (Beijing Electric Power Hospital of State Grid Co. of China),Beijing 100073;
    3. Weifang Medical University, Weifang 261053;
    4. The Second Hospital of Hebei Medical University,Shijiazhuang 050005;
    5. Kangle Hospital of Chengguan District, Lanzhou 730030;
    6. The Affiliated Rehabilitation Hospital of Chongqing Medical University, Chongqing 400050;
    7. Dalian Children's Hospital,Dalian 116000;
    8. Liaocheng People's Hospital, Liaocheng 252000, China
  • Received:2020-08-12 Revised:2021-01-05 Published:2021-10-21

摘要: 目的: 胎儿没有实际上的呼吸,新生儿出生后才开始呼吸,我们假设人的第一次呼吸主要是由于低氧而触发。本研究对流经主动脉体外周化学感受器后的脐带动脉血液氧分压(PuaO2)变化规律和下限进行分析以探讨新生儿自主呼吸产生机制。方法: 选择签署知情同意书的正常分娩产妇数十例,仅14例新生儿在自主呼吸开始前成功完成脐带动脉或静脉置管。分别进行逐搏取血及顺序血气分析,计算血气指标的平均值、最高值和最低值,统计比较脐带动静脉的异同。结果: 在14例新生儿自主呼吸开始前完成采集脐带动脉(Pua)样本9例,脐带静脉(Puv)样本8例。就PO2而言,所有9例PuaO2随时间(心跳次数)呈逐渐降低倾向,直至在自主呼吸产生大约8~10次心跳后Pua挛缩、基本上无法取得足够的血样。PuaO2平均值是(25.94±6.79,18.04~37.51)mmHg,最高值是(29.11±6.46,23.00~45.90)mmHg,最低值是(21.34±5.54,14.00~33.60)mmHg;但PuaCO2变化趋势和规律则不够稳定,PuaCO2平均值是(47.26 ±7.71) mmHg。PuvO2随时间(心跳次数)虽也呈逐渐降低趋势,但多数还呈现随母亲呼吸节律的规律性交替升降的倾向,特别是母亲吸氧时。所有8例PuvO2平均值是(53.35±21.35,32.56~100.73)mmHg,最高值是(90.38±48.44,43.40~153.00)mmHg,最低值是(36.96±14.90,24.80~73.80)mmHg;PuvCO2平均值是(41.04±6.44)mmHg。虽然有着较大的个体差异,但 PuvO2平均值、最高值和最低值均显著较PuaO2高(P<0.05);PuvCO2虽略低于PuaCO2,但无显著差异(P>0.05)。结论: 胎儿娩出为新生儿后自主呼吸前PuaO2随时间(心跳次数)逐渐降低,在达到触发呼吸的阈值时诱发第一次吸气,从而开始自主呼吸。

关键词: 新生儿出生后呼吸前, 脐带动脉和脐带静脉连续逐搏取血, 血液气体分析, 脐带动脉血氧分压, 呼吸调节控制信号

Abstract: Objective: The fetus has no actual respiration, and the newborn begins to breathe after birth. We assume that the first breath dominantly generated by hypoxia. In this study, the changes and lowest limit of blood oxygen partial pressureof umbilical artery (PuaO2) after chemoreceptor were analyzed to explore the mechanism of neonatal spontaneous breathing. Methods: With signed consent form by all fetal parents before birth, 14 newborns successfully completed the umbilical artery or vein catheterization and drawn blood according to the heartbeat. All blood samples analyzed by blood gas analyzer,calculated and analyzed the similarities and differences between umbilical vein(Puv) and umbilical artery(Pua). Results: Although we completed 14 newborns, there were only 9 cases of umbilical artery samples and 8 cases of umbilical vein samples were collected. Only 3 cases collected both Pua and Puv blood samples at the same time (see serial paper II). PuaO2 in gradually decreased with time (heartbeat frequency), until Pua contracted after spontaneous breathing produced about 8~10 heartbeats, and then could not get enough blood samples. Only 3 newborns were able to take blood samples after spontaneous breathing for 8~10 heartbeats, and their PuaO2 were jumped to 186.0, 137.0 and 93.8 mmHg respectively. The mean value of PuaO2 was (25.94±6.79, 18.04~37.51)mmHg, the highest value was (29.11±6.46, 23.00~45.90)mmHg, and the lowest value was (21.34±5.54, 14.00~33.60)mmHg. Although PuvO2 decreased gradually with time (heartbeat) too, most of them also showed the tendency of alternately rising and falling with the regularity of mother's respiration. The mean value of PuvO2 was (53.35±21.35, 32.56~100.73)mmHg, the highest value was (90.38±48.44, 43.40~153.00)mmHg, and the lowest value was (36.96±14.90, 24.80~73.80)mmHg. Although there were large individual differences, the mean, highest and lowest values of PuvO2 were significantly higher than those of PuaO2 (P<0.05); although PuvCO2 slightly lower than PuaCO2, it was no significant difference (P>0.05). Conclusion: PuaO2 decreases gradually with time before spontaneous breathing after the delivered fetus as a newborn, and it induces the first inhalation to start spontaneous breathing when it reaches the threshold of triggering breathing.

Key words: newborn after birth before breathing, umbilical artery and umbilical vein take blood continuously, blood gas analysis, umbilical arterial oxygen partial pressure, respiratory regulation control signal

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