绝大多数的高血压患者在接触医疗系统,进行无症状筛查时会被发现。美国预防服务工作组 (US Preventive Services Task Force, USPSTF) 推荐对年龄≥40 岁的成人或有高血压风险升高的人群(血压为正常高值、超重或肥胖或者非洲裔美国人)每年进行筛查。建议对年龄在 18 至 39 岁之间、血压正常 (<130/85 mmgHg) 且无其他危险因素的成人每 3 至 5 年重新筛查一次。然而,美国心脏病学会/美国心脏协会 (ACC/AHA) 指南推荐,对所有血压正常的患者每年进行筛查。[5]Whelton PK, Carey RM, Aronow WS, et al. 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults: a report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. J Am Coll Cardiol. 2018 May 15;71(19):e127-248.https://www.sciencedirect.com/science/article/pii/S0735109717415191?via%3Dihubhttp://www.ncbi.nlm.nih.gov/pubmed/29146535?tool=bestpractice.comUSPSTF 建议在临床环境之外测量血压(动态血压监测[59]Piper MA, Evans CV, Burda BU, et al. Diagnostic and predictive accuracy of blood pressure screening methods with consideration of rescreening intervals: a systematic review for the U.S. Preventive Services Task Force. Ann Intern Med. 2015 Feb 3;162(3):192-204.http://annals.org/article.aspx?articleid=2085846http://www.ncbi.nlm.nih.gov/pubmed/25531400?tool=bestpractice.com 或家庭 BP)以确诊。[48]US Preventive Services Task Force. High blood pressure in adults: screening. Oct 2015 [internet publication].http://www.uspreventiveservicestaskforce.org/Page/Document/RecommendationStatementFinal/high-blood-pressure-in-adults-screening ACC/AHA 指南强调了这一推荐,不过仅在阈值方面存在差异。如果在未治疗的情况下,患者的收缩压>130 mmHg 但 <160 mmHg 或者舒张压>80 mmHg 但<100 mmHg,在诊断为高血压前,采用日间动态血压监测 (ambulatory blood pressure monitoring, ABPM) 或家庭血压监测 (home blood pressure monitoring, HBPM) 筛查白大衣高血压是合理的做法。[5]Whelton PK, Carey RM, Aronow WS, et al. 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA guideline for the prevention, detection, evaluation, and management of high blood pressure in adults: a report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. J Am Coll Cardiol. 2018 May 15;71(19):e127-248.https://www.sciencedirect.com/science/article/pii/S0735109717415191?via%3Dihubhttp://www.ncbi.nlm.nih.gov/pubmed/29146535?tool=bestpractice.com 诊室血压升高 (120-129/<80 mmHg) 但未达到高血压标准的成人患者,应通过日间动态血压监测或家庭血压监测合理筛查隐匿性高血压。其他国家的指南可能推荐不同的筛查间隔。欧洲心脏病学会/欧洲高血压学会 (ESC/ESH) 指南推荐每年对血压处于正常高值 (130-139/85-89 mmHg) 的患者进行筛查,对于血压处于正常值 (120-129/80-84 mmHg) 的患者至少每 3 年筛查一次,对于血压处于理想值 (<120/80 mmHg) 的患者至少每 5 年筛查一次。[2]Williams B, Mancia G, Spiering W, et al. 2018 ESC/ESH guidelines for the management of arterial hypertension. Eur Heart J. 2018 Sep 1;39(33):3021-104.https://academic.oup.com/eurheartj/article/39/33/3021/5079119http://www.ncbi.nlm.nih.gov/pubmed/30165516?tool=bestpractice.com
这些筛查指南往往超标,因为在临床实践中患者的每一次就诊血压测量都需要标准化。升高的读数应该在诊断高血压之前的第二次就诊时进行确认。