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目的 :探讨发生急性高原反应时和习服后心功能变化。方法 :对比研究高原 (日喀则 ,海拔 390 0m) 5 6例发生急性高原反应者和平原 (西安 ,海拔 4 0 0m) 5 6例年龄和性别匹配的健康对照者心功能指标 ,并观察高原低氧习服后 ,心功能指标的变化过程。结果 :发生急性高原反应时心率、左室射血分数、短轴缩短率、心输出量均增大 ,室间隔运动幅度减低 ,左室舒张末期容积减小 ,右室轻度扩大。经过 6 0d习服后上述改变均有不同程度恢复。结论 :发生急性高原反应者 ,在初上高原时心功能变化较大 ,习服后适应高原环境
Objective: To investigate the changes of cardiac function after acute altitude sickness and after acclimatization. Methods: Fifty-six age-matched and gender-matched healthy controls in 56 cases of acute plateau responders and plains (Xi’an, 400 meters above sea level) were compared in the plateau (Shigatse, 390m above sea level) After acclimatization, changes in cardiac function indicators. Results: The heart rate, left ventricular ejection fraction, shortening rate of short axis, cardiac output increased, the amplitude of interventricular septum decreased, the volume of left ventricular end-diastolic volume decreased, and the right ventricle increased slightly. After 6 0d acclimation after the above changes have varying degrees of recovery. CONCLUSION: In patients with acute plateau reaction, cardiac function changes greatly in early plateau, and accustomed to adapt to altitude environment