机构地区:[1]中国医学科学院北京协和医学院阜外心血管病医院心内科,100037 [2]中国医学科学院北京协和医学院阜外心血管病医院心外科,100037
出 处:《中华医学杂志》2014年第14期1076-1079,共4页National Medical Journal of China
摘 要:目的:评价心肺运动试验在扩张型心肌病慢性左心衰竭患者心功能评价中的应用价值。方法连续选取2010年10月至2011年10月入住北京阜外心血管病医院年龄≥18岁的扩张型心肌病慢性左心衰竭患者53例,按纽约心脏病协会( NYHA)心功能分级分为心功能Ⅱ级组20例,心功能Ⅲ~Ⅳ级组33例。患者均行心肺运动试验,同步测定记录每一次呼吸时的气体交换指标、心率、血压、心电图和血氧饱和度等,同时行其他常规检查。试验结束后计算无氧域、峰值氧耗量、峰值氧脉搏等指标,并进行统计学对比分析。在试验结束后1d、1周、1个月、6个月、1年对两组患者的活动量、临床表现、心脏不良事件等进行随访。结果两组患者性别、年龄、体质指数、合并疾病、左室舒张末期内径、左室射血分数、血肌酐等基线资料差异均无统计学意义(均P>0.05);心功能Ⅲ~Ⅳ级组左房内径、氨基末端B型脑钠肽前体(NT-proBNP)水平、心房颤动发生率均显著高于Ⅱ级组[(51.4±7.5)比(43.6±7.7)mm、(2607±1782)比(1312±901)μg/L、42.4%(14/33)比5.0%(1/20)],肾小球滤过率、峰值氧耗量、无氧阈水平均显著低于Ⅱ级组[(72±20)比(97±23)ml/min、(13.7±2.6)比(20.5±3.6) ml· min-1· kg-1、(10.7±1.5)比(13.3±2.1) ml· min-1· kg-1](均P<0.01)。NT-proBNP与心功能分级呈正相关(OR=1.002,P=0.003);峰值氧耗量、无氧阈与心功能分级均呈负相关(OR=0.736、0.608,P=0.011、0.001)。结论心肺运动试验可客观反映扩张型心肌病慢性左心衰竭患者的心肺储备情况,其中峰值氧耗量、无氧阈可定量地、较准确地反映患者的运动能力。Objective To assess the value of cardiopulmonary exercise test in the evaluation of cardiac function in patients with chronic left heart failure caused by dilated cardiomyopathy .Methods Fifty-three inpatients aged 18 year and over with chronic left heart failure caused by dilated cardiomyopathy at Fuwai Hospital from October 2010 to October 2011 were selected and divided into 2 groups according to the New York Heart Association ( NYHA) heart function classification.One group had 20 cases for class Ⅱand another 33 cases for class Ⅲ-Ⅳ.All of them received cardiopulmonary exercise tests.Synchronous measurement and record of gas exchange indices were taken during every breath , and so were heart rate , blood pressure, electrocardiogram and blood oxygen saturation.At the same time, other routine tests were also performed.After exercise test , anaerobic threshold and peak oxygen consumption indices were calculated and statistically analyzed.They also received subsequent follow-ups of 1 day, 1 week, 1 month, 6 months and 1 year , including activities , clinical manifestations and cardiac adverse events.Results At baseline, the differences in gender, age, body mass index, concurrent diseases, left ventricular end-diastolic diameter , left ventricular ejection fraction and serum creatinine had no statistical significance ( P〉0.05).Compared with cardiac function class Ⅱ group, the class Ⅲ -Ⅳ group had higher left atrial diameter, level of amino terminal pro-B-type natriuretic peptide ( NT-proBNP ), incidence of atrial fibrillation ((51.4 ±7.5) vs (43.6 ±7.7) mm, (2 607 ±1 782) vs (1 312 ±901) μg/L, 42.4%(14/33) vs 5.0%(1/20)) and lower glomerular filtration rate, peak oxygen consumption, levels of anaerobic threshold ((72 ±20) vs (97 ±23) ml/min, (13.7 ±2.6) vs (20.5 ±3.6) ml· min-1· kg-1, (10.7 ±1.5) vs (13.3 ±2.1) ml· min-1· kg-1)
关 键 词:运动试验 心肌病 扩张型 心室功能障碍 左 评价研究
分 类 号:R542.2[医药卫生—心血管疾病] R541.6[医药卫生—内科学]
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