首页 > 呼吸医学词汇大全 > Arterial oxygen saturation
Pulmonary pressure, cardiac output, and arterial oxygen saturation during exercise at high altitude and at sea level.
高原和海平面运动期间的肺动脉压、心输出量和动脉血氧饱和度。

摘要

The response elicited by exercise on pulmonary pressure, cardiac output, and arterial oxygen saturation in 35 lifetime residents of high altitude has been studied at high altitude (14,900 feet above sea level), and 22 residents of low altitude have been studied at sea level. A procedure combining cardiac catheterization, arterial cannulation, and spirometry was carried out. The exercise was moderate and was performed in supine position using a bicycle ergometer, the work load being 300 kg-m/min/m2 and the average increase of the oxygen uptake being 4.7 times at sea level and 4.8 times at high altitude. Both at .sea level and at high altitude the cardiac output augmented during exercise proportionally to the increase in oxygen uptake, and thus followed the pattern of response described by other authors. The cardiac output as well as the oxygen intake, for the magnitude of exertion performed in this study, was almost the same at sea level and at high altitude. The cardiac output rose during exercise almost exclusively as a result of an increase in the heart rate, with the stroke volume remaining practically constant. Despite similar increase in cardiac output, the response of pulmonary pressure was smaller for sea-level subjects than for the high-altitude subjects. Increments of mean pulmonary pressure bf nearly 50% and 100% were observed on exercise at sea level and at high altitude, respectively. During exercise the arterial oxygen saturation did not change in the sea-level studies, but decreased significantly in the high-altitude studies. The decrement observed in high-altitude residents is related to a fall in arterial pO2 which at resting conditions is placed on the steep part of the oxygen dissociation curve.

译文

在高海拔地区 (海拔 14,900英尺米),研究了 35 名高海拔居民在运动中引起的对肺动脉压、心输出量和动脉血氧饱和度的反应。和 22 名低空居民已经在海平面上进行了研究。进行了心导管插入、动脉插管和肺活量测定相结合的手术。这项运动是适度的,并使用自行车测力计以仰卧位进行, 工作负荷为 300千克-m/min/m2,摄氧量的平均增加在海平面为 4.7 倍,在高海拔为 4.8 倍。两者都在。海平面和高海拔地区,运动时心输出量的增加与摄氧量的增加成比例,因此遵循了其他作者描述的反应模式。在这项研究中,在海平面和高海拔地区,心输出量和氧气摄入量几乎是相同的。在运动过程中,心输出量的增加几乎完全是由于心率的增加,而心搏量几乎保持不变。尽管心输出量有类似的增加,但海平面受试者的肺压反应比高海拔受试者小。在海平面和高海拔的运动中,平均肺压 (bf) 的增量分别接近 50% 和 100%。在运动期间,在海平面研究中,动脉血氧饱和度没有变化,但在高海拔研究中显著下降。在高海拔居民中观察到的衰减与动脉 pO2 的下降有关,在静息条件下,动脉 pO2 被置于氧解离曲线的陡峭部分。

Arterial oxygen saturation

呼吸 动脉血氧与血红蛋白结合的程度 临床研究术语
概述  :  

动脉血氧饱和度是指动脉血氧与血红蛋白结合的程度,是单位血红蛋白含氧百分数。正常值为95%~98%。一般情况下,每克血红蛋白实际结合0.6mmol(1.34ml)氧,若血红蛋白为150g/L,全部与氧结合,则其血氧结合量为150×0.06=9.0mmol/L(15×1.34=20ml/dl)。由于并非全部的血红蛋白都能氧合,而且血中还存在其他血红蛋白,如高铁血红蛋白、正铁血红蛋白和其他变性血红蛋白等,因此SaO2难以达到100%。 由缺氧引起的不当的新陈代

Arterial   /ɑːrˈtɪriəl/

释    义   adj. [解剖] 动脉的;干线的;像动脉的

同根词   arteriolar adj.小动脉的

               arteriosclerotic adj.动脉硬化的

               artery n.动脉;干道;主流

               arteriole n. [解剖] 小动脉;细动脉

               arteriosclerosis n. [内科] 动脉硬化

               arteriectasis n.动脉扩张

               arteriogram n.动脉波;动脉脉搏图;动脉搏描记图

               arteriography n. 动脉 X 线摄影法

               arteritis n. [内科] 动脉炎

               arterialize vt. 化为动脉血

例    句   One study showed that flavanols can reverse arterial damage caused by smoking. 一项研究表明,黄烷醇可以扭转由吸烟造成的动脉损伤。

 

Oxygen   英 /ˈɒksɪdʒən/   美 /ˈɑːksɪdʒən/

释    义   n. [化学] 氧气,[化学] 氧

同根词   oxygenation n. 以氧处理,氧化作用

               oxygenate vt.氧化,充氧;以氧处理;使…与氧化合

               oxygenize vt.使氧化

例    句   Water is a compound containing the elements hydrogen and oxygen. 水是含有氢元素和氧元素的化合物。

 

Saturation   /ˌsætʃəˈreɪʃn/

释    义   n. 饱和;色饱和度;浸透;磁化饱和

同根词   saturate adj. 浸透的,饱和的;深颜色的

               saturated adj. 饱和的;渗透的;深颜色的

               saturate vt.浸透,使湿透;使饱和,使充满

例    句   Ultimately revenue from data plans will reach the same level of saturation as voice services. 最终,来自数据计划的收入将达到与语音服务相同的饱和水平。

请扫描右侧二维码,免费查看词汇专业知识背景