- Unattended office systolic BP measurement (UBP) does not correlate with home measures and cannot substitute for home-based BP monitoring (HBP).
- The idea was that removing medical staff might reduce the white-coat effect, but individual variation between the two was quite high.
- With medical staff present (conventional BP measurement; CBP), BPs were 11/4 mmHg higher, on average.
Why this matters
- Unattended BP measurement is not a suitable alternative to HBP.
- Systolic BP values did not correlate between UBP and HBP (r≤0.16).
- Although average differences were small, the individual variation was high.
- CBP and UBP did correlate strongly (r≥0.72; P<.0001>
- CBP and morning HBP systolic measurements differed by an average of 13.8 (standard deviation, 19.0) mmHg.
- CBP and HBP systolic evening measurements differed by 9.0 (18.0) mmHg.
- Multicenter study of 308 patients (57.8% women; mean age, 71.8 years) at 3 Japanese hypertension clinics.
- All but 11 were on antihypertensives.
- Funding: Japanese Society of Hypertension.
- Limitations of cross-sectional design, no causality established.