按 1 999年美国高血压预防、检测、评估和治疗全国联合委员会第 6次报告的诊断标准 ,原发性高血压 (EH)患者经 3种足量降压药 ,其中包括利尿剂 ,血压仍不能降至 1 40 /90mmHg( 1mmHg =0 .1 33kPa)以下者 ;或单纯收缩期高血压不能使收缩压降至 1 60mmHg以下者为顽固性高血压。占 According to the diagnostic criteria of the 6th report of the National Joint Committee on Prevention, Testing, Assessment and Treatment of Hypertension in 1999, the patients with essential hypertension (EH) were treated with 3 full-scale antihypertensive drugs, including diuretics, Can not be reduced to 1 40/90 mmHg (1mmHg = 0. 1 33kPa) less; or isolated systolic hypertension can not make the systolic blood pressure down to 160mmHg the following were refractory hypertension. Take up