Objective:To confirm the white coat effect and to study the character and the clinical significance of white coat hypertension(WCH).

目的：确定白大衣效应和白大衣性高血压的特征及其临床意义。

Objective:To assess the structure of heart and left ventricular systolic and diastolic function in patients with white coat hypertension(WCH).

目的：了解白大衣高血压患者左心结构及左室收缩功能和舒张功能状况。