问题1：请问什么是顽固性高血压？发病率大概是多少？ Q1：Would you please to tell us what is the meaning of resistant hypertension? What The prevalence of resistant hypertension? 问题2：顽固性高血压和哪些因素有关？ Q2：Which factors are related to resistant hypertension? 问题3： 2008年AHA公布了新的顽固性高血压指南，您认为它有什么特点？ Q3: In 2008, AHA has issued new guidelines for treating resistant hypertension. What is the characteristic of this guideline? 问题4：近年来顽固性高血压治疗方面，有哪些进展？ Q4：During recent years, what is the progress on treatment of resistant hypertension?