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Written by Administrator
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Friday, 15 May 2009 00:01 |
USE OF BPTRU ELECTRONIC BP MEASURING DEVICE IN THE CLINIC SETTING |
M.F. MATANGI (1), D.W. ARMSTRONG (1)
| (1) KINGSTON HEART CLINIC, KINGSTON-CANADA, |
OBJECTIVE. To compare the initial systolic blood pressure (SBP) measured using the BPTru electronic blood pressure (BPTEBP) measuring device with the final averaged SBP.
DESIGN. Data was used from 3,406 patients (P) who had both initial and averaged BPTEBP were obtained from our database, CARDIOfile.
METHODS. The BPTru records 6 SBP measurements every 2 minutes. The first reading was manually recorded. The last 5 averaged and recorded.
RESULTS. The mean initial SBP and mean averaged SBP (mmHg) for the 3,406 recordings were, 157.3± 17.1 and 140.8±17.4 respectively, (P<0.0001). Using linear regression analysis the r value was 0.66 (P<0.0001).
CONCLUSIONS. Of 3,406 Ps, 9% were normotensive on both the initial and final measurements. A further 47% of Ps whose initial reading was hypertensive became normotensive. The lower than expected percentage of masked hypertensives (1%) relates to the common practice of performing the BPTEBP average SBP on those Ps who have an initially abnormal reading. Of 497 Ps whose initial SBP was normal, only 142 (29%) had their average SBP recorded. Use of the BPTEBP reduces the number of hypertensives from 90% to 43% thus allowing targeted management to those patients who actually need augmentation of their BP control.
Category. | N | % | Hypertensive. | 1448 | 43 | White coat hypertensive. | 1608 | 47 | Normotensive. | 314 | 9 | Masked hypertensive. | 36 | 1 | Total. | 3406 | 100 |
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