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Automated office blood pressure (AOBP) devices are recommended for high blood pressure diagnosis. One of those devices is the Omron HEM-907 (Omron Healthcare). It is currently not known if blood pressure measurements performed with this device in a clinical setting are equivalent to those made in a research setting. Therefore, this randomized-controlled trial was designed. It aims to compare the blood pressure measurements performed in a clinical and a research setting. Seventy patients will be included and randomized to a clinical/research or research/clinical sequence.
Hypertension is a common condition, with an estimated prevalence around 20 percent in Canada. It is a major risk factor for cardiovascular disease. Recently, Hypertension Canada has updated its guidelines and recommend we should consider a 120 mm Hg systolic blood pressure target in high-risk patients aged 50 years or older. This recommendation derives mainly from the SPRINT trial. In this trial, blood pressure was measured with an automated oscillometric blood pressure (AOBP) device, the Omron HEM-907 (Omron Healthcare). However, it is not known if measurements performed with this device in a clinical setting are equivalent to those made in a research setting. Therefore, this randomized-controlled trial was designed. It aims to compare the blood pressure measurements of 70 patients in a clinical and a research setting. Patients will be randomized to a clinical/research or a research/clinical sequence.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Sequence: Clinical/Research | Experimental | Participants assigned to this arm will have their blood pressure measured in a clinical setting first, and in a research setting second. The sequence randomization corresponds to the intervention. Visits will be at least a day apart but within a two-week period. During the clinical visit, they will have their blood pressure measured with the Omron HEM-907, an automated office blood pressure (AOBP) device. During the research setting, participants will be guided through a series of research-driven steps such as study questionnaires and completion of consent forms. They will have their blood pressure measured in both arms with a mercury sphygmomanometer, and then 3 measurements with a mercury sphygmomanometer. AOBP measurements (Omron HEM-907) will be performed at the end of the visit. |
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| Sequence: Research/Clinical | Active Comparator | Participants assigned to this arm will go through the same measurements and procedures exception made of the research-first and clinical-second sequence. The intervention to which they are randomized corresponds to the sequence of the visits. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Sequence: Clinical/Research | Other | Participants will be assigned to a sequence of: research visit first/clinical visit second. |
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| Measure | Description | Time Frame |
|---|---|---|
| Mean automated office blood pressure systolic blood pressure estimates | Up to 2 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Mean automated office blood pressure diastolic blood pressure estimates. | Up to 2 weeks | |
| Individual unaveraged automated office systolic and diastolic blood pressure measurements (1, 2 and 3) | Up to 2 weeks |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Institut de Recherches Cliniques de Montréal | Montreal | Quebec | H2W1R7 | Canada |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 26711315 | Background | Padwal RS, Bienek A, McAlister FA, Campbell NR; Outcomes Research Task Force of the Canadian Hypertension Education Program. Epidemiology of Hypertension in Canada: An Update. Can J Cardiol. 2016 May;32(5):687-94. doi: 10.1016/j.cjca.2015.07.734. Epub 2015 Aug 15. | |
| 8622248 | Background | Kannel WB. Blood pressure as a cardiovascular risk factor: prevention and treatment. JAMA. 1996 May 22-29;275(20):1571-6. |
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according to specific scientifically pertinent demands
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| ID | Term |
|---|---|
| D006973 | Hypertension |
| D054160 | Systolic Murmurs |
| D006337 | Heart Murmurs |
| ID | Term |
|---|---|
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
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| Sequence: Research/Clinical | Other | Participants will be assigned to a sequence of: clinical visit first/research visit second. |
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| 26724178 | Background | Ettehad D, Emdin CA, Kiran A, Anderson SG, Callender T, Emberson J, Chalmers J, Rodgers A, Rahimi K. Blood pressure lowering for prevention of cardiovascular disease and death: a systematic review and meta-analysis. Lancet. 2016 Mar 5;387(10022):957-967. doi: 10.1016/S0140-6736(15)01225-8. Epub 2015 Dec 24. |
| 3336140 | Background | Pickering TG, James GD, Boddie C, Harshfield GA, Blank S, Laragh JH. How common is white coat hypertension? JAMA. 1988 Jan 8;259(2):225-8. |
| 12799100 | Background | Myers MG, Valdivieso MA. Use of an automated blood pressure recording device, the BpTRU, to reduce the "white coat effect" in routine practice. Am J Hypertens. 2003 Jun;16(6):494-7. doi: 10.1016/s0895-7061(03)00058-x. |
| 23969286 | Background | Edwards C, Hiremath S, Gupta A, McCormick BB, Ruzicka M. BpTRUth: do automated blood pressure monitors outperform mercury? J Am Soc Hypertens. 2013 Nov-Dec;7(6):448-53. doi: 10.1016/j.jash.2013.07.002. Epub 2013 Aug 19. |
| 28449828 | Background | Leung AA, Daskalopoulou SS, Dasgupta K, McBrien K, Butalia S, Zarnke KB, Nerenberg K, Harris KC, Nakhla M, Cloutier L, Gelfer M, Lamarre-Cliche M, Milot A, Bolli P, Tremblay G, McLean D, Tran KC, Tobe SW, Ruzicka M, Burns KD, Vallee M, Prasad GVR, Gryn SE, Feldman RD, Selby P, Pipe A, Schiffrin EL, McFarlane PA, Oh P, Hegele RA, Khara M, Wilson TW, Penner SB, Burgess E, Sivapalan P, Herman RJ, Bacon SL, Rabkin SW, Gilbert RE, Campbell TS, Grover S, Honos G, Lindsay P, Hill MD, Coutts SB, Gubitz G, Campbell NRC, Moe GW, Howlett JG, Boulanger JM, Prebtani A, Kline G, Leiter LA, Jones C, Cote AM, Woo V, Kaczorowski J, Trudeau L, Tsuyuki RT, Hiremath S, Drouin D, Lavoie KL, Hamet P, Gregoire JC, Lewanczuk R, Dresser GK, Sharma M, Reid D, Lear SA, Moullec G, Gupta M, Magee LA, Logan AG, Dionne J, Fournier A, Benoit G, Feber J, Poirier L, Padwal RS, Rabi DM; Hypertension Canada. Hypertension Canada's 2017 Guidelines for Diagnosis, Risk Assessment, Prevention, and Treatment of Hypertension in Adults. Can J Cardiol. 2017 May;33(5):557-576. doi: 10.1016/j.cjca.2017.03.005. Epub 2017 Mar 10. |
| 26551272 | Background | SPRINT Research Group; Wright JT Jr, Williamson JD, Whelton PK, Snyder JK, Sink KM, Rocco MV, Reboussin DM, Rahman M, Oparil S, Lewis CE, Kimmel PL, Johnson KC, Goff DC Jr, Fine LJ, Cutler JA, Cushman WC, Cheung AK, Ambrosius WT. A Randomized Trial of Intensive versus Standard Blood-Pressure Control. N Engl J Med. 2015 Nov 26;373(22):2103-16. doi: 10.1056/NEJMoa1511939. Epub 2015 Nov 9. |
| 21300709 | Background | Myers MG, Godwin M, Dawes M, Kiss A, Tobe SW, Grant FC, Kaczorowski J. Conventional versus automated measurement of blood pressure in primary care patients with systolic hypertension: randomised parallel design controlled trial. BMJ. 2011 Feb 7;342:d286. doi: 10.1136/bmj.d286. |
| 7662244 | Background | Myers MG, Oh PI, Reeves RA, Joyner CD. Prevalence of white coat effect in treated hypertensive patients in the community. Am J Hypertens. 1995 Jun;8(6):591-7. doi: 10.1016/0895-7061(95)00049-U. |
| 19417634 | Background | Myers MG, Valdivieso M, Kiss A. Consistent relationship between automated office blood pressure recorded in different settings. Blood Press Monit. 2009 Jun;14(3):108-11. doi: 10.1097/MBP.0b013e32832c5167. |
| 28159816 | Background | Agarwal R. Implications of Blood Pressure Measurement Technique for Implementation of Systolic Blood Pressure Intervention Trial (SPRINT). J Am Heart Assoc. 2017 Feb 3;6(2):e004536. doi: 10.1161/JAHA.116.004536. |