摘要
目的 记录、分析和评价“蛟龙号”潜航员驾驶载人潜水器进行水下作业时的心电图.方法 运用美国Biopac公司的MP30型心电图机采集5名潜航员驾驶载人潜水器在水下作业过程中的肢体Ⅱ导联心电信号,进行心电图检查.提取心率、P-R间期、QRS时限、Q-T间期、R波和T波电压6项参数.结果 心率在潜航前水面的对照值是(61.0±2.9)次/min,潜航员驾驶载人潜水器在水下作业1.5、2.5、3.5h时的心率分别增加到(89.1±12.1)、(86.2±10.2)、(83.3±10.3)次/min,与潜航前比较差异均有统计学意义(P<0.05).P-R间期在水下潜航作业1.5、2.5、3.5h时由潜航前水面的对照值(196.1±11.9)ms分别缩短为(168.1±12.1)、(167.2±12.2)、(181.3±11.3)ms,差异均有统计学意义(P<0.05).Q-T间期在水下潜航作业1.5、2.5、3.5h时由潜航前水面的对照值(444.4±13.4)ms分别缩短为(400.2±29.2)、(386.1±19.1)、(393.0±13.0)ms,差异均有统计学意义(P<0.05).心电图上的QRS时限、R波及T波振幅在3.5h的水下潜航作业过程中差异均无统计学意义(P>0.05).结论 载人潜水器水下作业过程中潜航员的心电图变化主要是心率增快,P-R间期与Q-T间期缩短,未发现QRS时限、R波和T波明显改变,表明潜航员在水下潜航中的心功能储备虽有所降低,但整体心电图仍属正常.
Objective To record,analyze and evaluate the ECG of oceanauts operating the "Jiaolong"deep-sea manned submersible.Methods During underwater operation,the ECG signals of the 5 oceanauts were collected by using MP30 electrocardiograph (Biopac System Inc.) for ECG detection.The 6 indexes of heart rate (HR),P-R interval,QRS duration,Q-T interval and the voltage of R and T waves were recorded and analyzed.Results The HR control value on the surface before submergence was(61.0 ± 2.9) times/min.At hour 1.5,2.5 and 3.5,the heart rates of the oceanauts operating the "Jiaolong" deep-sea manned submersible respectively increased to(89.1 ± 12.1),(86.2 ± 10.2) and (83.3 ± 10.3) times/min,and statistical significance could be noted,as compared with that before submergence (P 〈 0.05).At hour 1.5,2.5 and 3.5 during underwater operation,the P-R intervals respectively shortened to (168.1 ± 12.1),(167.2 ± 12.2) and (181.3 ± 11.3) ms,as compared with the control value on the surface(196.1 ± 11.9)ms.Statistical significance could be noted,when comparisons were made between them(P 〈 0.05).At hour 1.5,2.5 and 3.5 during underwater operation,the QT intervals respectively shortened to(400.2 ± 29.2),(386.1 ± 19.1)and(393.0 ± 13.0)ms as compared with the control value on the surface (444.4 ± 13.4) ms,also with statistical significance (P 〈 0.05).There was no statistical significance in QRS duration,R and T wave amplitudes at hour 3.5 during underwater operation (P 〉0.05).Conclusions During underwater operation,the changes in ECG of the oceanauts mainly displayed in the increased heart rate,and shortened PR and Q-T intervals.However,there were no significant changes in QRS duration,R and T waves,indicating that the ECG of the oceanauts was on the whole still within normal level,though cardiac back-up of the oceanauts during submerged operation was decreased to some extent.
出处
《中华航海医学与高气压医学杂志》
CAS
CSCD
2016年第2期85-87,共3页
Chinese Journal of Nautical Medicine and Hyperbaric Medicine
基金
上海市自然科学基金资助项目(12ZR1415300)
国家国际科技合作专项项目(2012DF20970)
海洋公益性行业科研专项项目(201205035-11)
关键词
“蛟龙号”载人潜水器
潜航员
水下作业
心电图
&quot
Jiaolong&quot
manned submersible
Oceanaut
Underwater operation
Electrocardiogram