论文部分内容阅读
为了了解特高海拔对人体心脏的影响,我们对58例暴露在海拔5000米高原3个月前后的超声心动图STI和心内结构进行了测定。结果发现RVD和RVOT分别较前增加了22.0％和7.5％,而左心无显著改变;PEP和PEP/LVET分别较前增加了11.0％和9.4％;LVET,％△D和SV无明显改变。作者认为右心室增大和PEP的延长可能是心脏结构和生理功能对高原的适应性变化。并对上述变化的机理进行了探讨。
In order to understand the effects of the extra-high altitude on the human heart, we measured the STI and cardiac structure of 58 echocardiographs exposed to a height of 5,000 m three months ago. The results showed that the RVD and RVOT increased by 22.0% and 7.5% respectively compared with those before, while there was no significant change in the left ventricle. The PEP and PEP / LVET increased by 11.0% and 9.4% respectively compared with the former; LVET,% △ D and SV did not change significantly. The authors suggest that right ventricular enlargement and prolongation of PEP may be adaptive changes in cardiac structure and physiology to the plateau. The mechanism of the above changes is also discussed.