论文部分内容阅读
旨在探讨中度缺氧负荷检查时敏感的监护方法。在低压舱上升5000 m停留30 min条件下,由专人陪同进舱,用电子血压计对15名歼击机飞行员的血压进行动态观察并与基层仅有常规心电图、心率监护比较。结果14名飞行员缺氧耐力良好,经F检验,随缺氧时间延长,心率明显增加(P<0.01),最大增长率46％;心电图Q-Tc、J-Tc无明显改变(P>0.05);收缩压、脉压差明显增大(P<0.01),平均分别增高1.4 kPa(11 mmHg)、3.9 kPa(28.5mmHg)。经t检验,10～20 min舒张压与训练前比明显下降(P<0.05)。结论①此负荷强度心脏可以代偿,因此,心肌缺氧敏感指标Q-Tc、J-Tc无明显改变;此刻心率变化与氧耗量无线性关系,故心电图、心率监护对此负荷不敏感;②血压监护有明显变化趋势,缺氧耐力低下者尤甚。电子血压计自动显示心率、血压值,迅速方便,是中度缺氧负荷敏感监护方法。本试验提示健康人也存在缺氧耐力低下,训练中会发生各种异常。
The purpose of this study was to explore sensitive monitoring methods for moderate hypoxic loading. In the low-pressure cabin ascending 5000 m stay 30 min conditions, accompanied by escort into the cabin, the use of electronic sphygmomanometer 15 fighter pilots blood pressure dynamic observation and the grassroots only conventional ECG, heart rate monitoring comparison. Results Fourteen pilots showed good hypoxia endurance. The F-test showed that the heart rate increased significantly with the increase of hypoxia time (P <0.01), and the maximum increase rate was 46%. There was no significant change in Q-Tc and J-Tc electrocardiogram (P> 0.05) Systolic blood pressure and pulse pressure difference increased significantly (P <0.01), with an average increase of 1.4 kPa (11 mmHg) and 3.9 kPa (28.5 mmHg) respectively. After t test, the diastolic blood pressure at 10 ~ 20 min was significantly lower than that before training (P <0.05). Conclusion ① The heart of this load intensity can be compensated. Therefore, Q-Tc and J-Tc of myocardium hypoxia did not change obviously. At this moment, there was no linear relationship between heart rate and oxygen consumption, so electrocardiogram and heart rate monitor were not sensitive to this load. ② There is a clear trend of blood pressure monitoring changes, hypoxia endurance is particularly low. Electronic sphygmomanometer automatically displays heart rate, blood pressure value, quickly and easily, is a moderate hypoxic load-sensitive monitoring methods. This test prompts healthy people also have hypoxia endurance, training will occur in a variety of abnormalities.