Division of Cardiology, Department of Medicine, Johns Hopkins Medical Institutions, Cardiovascular Imaging Center, Baltimore, MD 21205, USA.
J Hum Hypertens. 2011 Oct;25(10):578-84. doi: 10.1038/jhh.2010.101. Epub 2010 Nov 25.
Excessive sympathetic activity and stress-induced left ventricular (LV) hypercontractility have been described in hypertensive LV hypertrophy. Recent quantitative data have shown that hypertensive LV hypertrophy is associated with preserved global LV function. However, progression of uncontrolled hypertension have detrimental effects on both the ejection fraction (EF) and LV contractile response to stress. Hypertensive LV hypertrophy has some common characteristics, including preserved global LV systolic function and LV volume with heart failure with preserved EF (HFPEF), which makes it difficult to differentiate between the two conditions at rest. Studies suggest that adopting an efficient antihypertensive therapy regimen may positively effect on the LV contractile capability in patients with long-standing hypertension. Evaluation of quantitative LV contractility under stress may be beneficial to differentiate between the hypertensive LV hypertrophy and HFPEF. It may also assist in developing a more effective modality in medical management of patients with hypertensive heart disease.
高血压性左心室肥厚中存在过度的交感神经活动和应激诱导的左心室(LV)高收缩性。最近的定量数据表明,高血压性 LV 肥厚与保留的整体 LV 功能相关。然而,不受控制的高血压的进展对射血分数(EF)和 LV 对压力的收缩反应都有不利影响。高血压性 LV 肥厚具有一些共同特征,包括保留的整体 LV 收缩功能和 LV 容积,与射血分数保留的心力衰竭(HFPEF)相似,这使得在休息时很难区分这两种情况。研究表明,采用有效的降压治疗方案可能对长期高血压患者的 LV 收缩能力产生积极影响。在应激下评估定量 LV 收缩性可能有助于区分高血压性 LV 肥厚和 HFPEF。它还有助于为高血压性心脏病患者的医学治疗制定更有效的方法。