Cox J, O'Malley K, Atkins N, O'Brien E
Blood Pressure Unit, Beaumont Hospital, Dublin, Ireland.
J Hypertens Suppl. 1991 Jan;9(1):S3-6.
The aim of this study was to assess the relationship between blood pressure measured conventionally ('conventional' pressure) and 24 h ambulatory blood pressure measured with the SpaceLabs 90202 recorder, in a control population with normal blood pressure, and in patients with hypertension. Reference values for 24 h ambulatory blood pressure had been determined previously in a control population of 776 healthy bank employees (396 men and 380 women), aged 17-80 years, and were compared with those from a clinic population which comprised 805 patients referred to a blood pressure clinic for evaluation of hypertension. The clinic population was divided into two groups: 'normotensive' patients, whose conventional blood pressure was less than 160/90 mmHg (n = 168), and 'hypertensive' patients, whose conventional blood pressure was greater than or equal to 160/90 mmHg (n = 637). The clinic population had higher conventional (156/87 versus 119/76 mmHg), daytime (147/90 versus 125/79 mmHg) and night-time (129/75 versus 106/61 mmHg) ambulatory pressures compared with the control population. The clinic 'hypertensive' patients had higher conventional (175/97 versus 136/77 mmHg), daytime (153/93 versus 140/87 mmHg) and night-time (133/78 versus 124/72 mmHg) ambulatory pressures than the clinic normotensive population. Daytime ambulatory pressure was higher than conventional pressure (125/79 versus 119/76 mmHg) in the control population and in the clinic normotensive population (140/87 versus 136/77 mmHg). However, this relationship was reversed in the clinic hypertensive patients (153/93 versus 175/97 mmHg). It is concluded that while conventionally measured blood pressure tends to be lower than ambulatory daytime pressure in normotensive populations, this relationship is reversed in patients with hypertension.
本研究旨在评估在血压正常的对照人群和高血压患者中，常规测量的血压（“传统”血压）与使用太空实验室90202记录仪测量的24小时动态血压之间的关系。此前已在776名年龄在17 - 80岁的健康银行员工（396名男性和380名女性）的对照人群中确定了24小时动态血压的参考值，并将其与来自一个临床人群的参考值进行比较，该临床人群包括805名因高血压评估而转诊至血压诊所的患者。临床人群分为两组：“血压正常”患者，其传统血压低于160/90 mmHg（n = 168）；“高血压”患者，其传统血压大于或等于160/90 mmHg（n = 637）。与对照人群相比，临床人群的传统血压（156/87 mmHg对119/76 mmHg）、日间血压（147/90 mmHg对125/79 mmHg）和夜间血压（129/75 mmHg对106/61 mmHg）更高。临床“高血压”患者的传统血压（175/97 mmHg对136/77 mmHg）、日间血压（153/93 mmHg对140/87 mmHg）和夜间血压（133/78 mmHg对124/72 mmHg）高于临床血压正常人群。在对照人群和临床血压正常人群中，日间动态血压高于传统血压（分别为125/79 mmHg对119/76 mmHg和140/87 mmHg对136/77 mmHg）。然而，在临床高血压患者中这种关系则相反（153/93 mmHg对175/97 mmHg）。得出的结论是，在血压正常的人群中，传统测量的血压往往低于日间动态血压，但在高血压患者中这种关系则相反。
