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高原心脏病(high altitude heart disease,HAHD)是慢性高原病的一种临床类型,为海拔3 000m以上地区移居人群多发病。本文旨在探讨高原心脏病左室损伤机制及冬眠心肌(hibernating myocardium,HM)在损伤中的作用,评价冬眠心肌在高原心脏病心力衰竭中的作用。作者选择34名HAHD患者进行了经胸壁小剂量多巴酚丁胺负荷超声试验,观察左室局部心肌收缩功能及心功能指标。结果轻中度心衰患者左室心肌对逐渐增加剂量的多巴酚丁胺
High altitude heart disease (HAHD) is a clinical type of chronic high altitude sickness, and frequently occurs in immigrant population above 3000m above sea level. This article aims to investigate the mechanism of left ventricular injury in high altitude heart disease and the role of hibernating myocardium (HM) in the injury and to evaluate the role of hibernating myocardium in heart failure of plateau patients with heart disease. The authors selected 34 patients with HAHD trans-thoracic low-dose dobutamine stress ultrasound test to observe left ventricular regional myocardial systolic function and cardiac function. RESULTS: Left ventricular myocardium in patients with mild to moderate heart failure responded to increasing doses of dobutamine