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重度和极重度气流受限慢性阻塞性肺疾病患者心脏变时功能比较及其与运动耐力的相关性

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摘要 目的 比较重度和极重度气流受限慢性阻塞性肺疾病(COPD)患者的心脏变时功能并分析其与运动耐力的相关性。方法 根据第1秒用力呼气容积占预计值的百分比(FEV1%pred)将80例重度和极重度气流受限COPD且经治疗后临床稳定≥4周的男性患者分为重度组(30%≤FEV1%pred<50%)40例和极重度组(FEV1%pred<30%)40例。两组患者均进行斜坡式功率递增症状限制性心肺运动试验,测定相关肺通气功能参数及气体交换参数,并计算心率储备率(HRR)。采用Pearson相关分析评估重度和极重度气流受限COPD患者FEV1%pred、HRR与峰值摄氧量(Peak VO_(2))的相关性。结果 极重度组患者Peak VO_(2)、峰值摄氧量占预计值百分比(Peak VO_(2)%pred)、峰值公斤摄氧量(Peak VO_(2)/kg)、峰值功率(PeakLoad)、峰值功率占预计值百分比(PeakLoad%pred)、峰值通气量(Peak VE)及HRR均低于重度组(P<0.05)。Pearson相关分析结果显示,重度和极重度气流受限COPD患者FEV1%pred、HRR均与Peak VO_(2)呈正相关(P<0.01)。结论 重度和极重度气流受限COPD患者普遍存在心脏变时功能不全(CI),极重度COPD患者CI更严重;重度和极重度气流受限COPD患者CI与运动耐力呈正相关。
作者 赵倩 单锡峥
出处 《临床内科杂志》 CAS 2024年第1期56-57,共2页 Journal of Clinical Internal Medicine
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