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目的探讨心脏超声检查在高原习服评价中的作用。方法采集平原对照组、高原暴露1周、高原暴露2个月、移居高原>1年以及移居>1年再暴露于更高海拔5组人群的心脏超声检查等生理指标,以GJB4301-2002标准评价其习服情况,并比较每搏输出量(SV)、心输出量(CO)、射血分数(EF)、心指数(CI)以及左、右心房和心室内径在习服与未习服组间差异。结果 4组习服率分别为:43.06%、57.41%、79.49%和56.25%,再暴露组有5例(6.25%)高原红细胞增多症患者,高原暴露1周组中左心室内径、EF、CI和CO在习服和未习服中有显著性差异,完全习服组的左心房内径、CI与未习服人群有显著性差异,再暴露人群中CI和CO在习服和未习服人群中存在显著差异。CI对完全习服评价的曲线下面积为0.766。结论心功能在高原习服中具有重要作用,其中CI对评价高原习服尤其是长期完全习服具有较好的应用价值。
Objective To investigate the role of cardiac ultrasonography in the evaluation of plateau acclimatization. Methods The physiological indexes of placenta control group, including 1 week exposure to plateau, 2 months exposure to plateau, 1 year migration to plateau, and 1 year re-exposure to higher altitude group, were evaluated by GJB4301-2002 standard The prevalences of habitual and unobserved patients were compared between the two groups. The differences of stroke volume (SV), cardiac output (CO), ejection fraction (EF), cardiac index (CI), left and right atrium and ventricular diameter Difference between. Results The rates of the four groups were 43.06%, 57.41%, 79.49% and 56.25%, respectively. There were 5 patients (6.25%) in the reexposed group and the left ventricular diameter, EF, CI and CO There was a significant difference between the unobserved and the unobserved groups. The left atrial diameter of the full-served group was significantly different from that of the unaccounted-for group, and CI and CO in the re-exposed group were found in the unobserved and unobserved groups Significant differences. The area under the curve of CI for complete accreditation was 0.766. Conclusions Cardiac function plays an important role in plateau acclimatization, and CI has a good application value for evaluating plateau acumen, especially for long-term complete acclimation.