目的:探讨老年高血压患者的血管弹性和红细胞携氧量与其心肺功能和生活质量的关系。方法:随机选择100名老年受试者分为两组:观察组为老年高血压患者(50例);对照组为相对健康的老年人(50例)。对比两组:(1)血管弹性指标:大动脉和小动脉的弹性指数、动脉血管顺应性、血管僵硬度以及血管壁厚度;(2)红细胞血氧能力指标:测定血氧饱和度50%时的氧分压(P50),用ELISA检测患者红细胞内2,3-二磷酯甘油酸(2,3-DPG)及丙酮酸激酶(PK)含量;(3)心脏功能检测:主动脉直径、左房内径、左室舒张内径、右房内径、右室内经、肺动脉内径、左室射血分数、室间隔厚度、左室后壁厚度及左室前壁厚度;(4)静态肺功能检测:潮气量、每分钟通气量、肺活量、最大通气量、第1秒用力呼气量、第1秒率及深吸气量;(5)采用生存质量核心问卷(QLQ-C30)对患者进行生存质量评估。对检测结果进行统计学分析。结果:对照组大、小动脉弹性指数均明显高于观察组(P<0.05);对照组血管顺应性明显高于观察组(P<0.05);而观察组血管僵硬度则明显高于对照组(P<0.05);观察组动脉内膜中层厚度大于对照组(P<0.05);观察组动脉脉搏波速高于对照组(P<0.05)。观察组外周血P50高于对照组(P<0.05);观察组外周血2,3-DPG和PK含量均高于对照组(P<0.05)。对照组主要心肺功能指标均优于观察组(P<0.05);观察组在躯体、角色、认知、情绪、社会等方面功能和整体生活质量各项指标评分均明显低于对照组(P<0.05)。结论:老年高血压患者动脉血管弹性降低、红细胞携氧能力下降,由此会进一步造成患者心肺功能的下降和生活质量的降低。
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