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Consistent relationship between automated office blood pressure recorded in different settings
Martin G Myers1, Miguel Valdivieso, Alexander Kiss
1Schulich Heart Centre, Department of Medicine, University of Toronto, Toronto, Ontario, Canada. martin.myers@sunnybrook.ca
Blood Pressure Monitoring
|May 7, 2009
Summary
Automated office blood pressure (BP) measurements are consistent across visits and settings. These automated readings closely align with 24-hour ambulatory BP monitoring, offering a reliable alternative to traditional methods.
Area of Science:
- Cardiology
- Hypertension Management
- Medical Device Technology
Background:
- Conventional office blood pressure (BP) measurements can be influenced by observer presence and environmental factors.
- Variability in BP readings can impact accurate hypertension diagnosis and management.
- Automated BP measurement offers a potential solution to reduce observer bias.
Purpose of the Study:
- To evaluate the consistency of automated office BP measurements during repeat visits.
- To assess the impact of different settings on automated office BP readings.
- To compare automated office BP with ambulatory BP monitoring.
Main Methods:
- Automated BP readings were taken using a BpTRU sphygmomanometer during routine hypertension specialist visits.
- Measurements were obtained before and after 24-hour ambulatory BP monitoring (ABPM).
- A third automated reading was taken at the ABPM unit visit.
Main Results:
- No significant differences were found among the three automated office BP readings.
- Automated office BP readings were comparable to mean awake ambulatory BP.
- Manual BP readings by technicians were significantly higher than mean awake ambulatory BP (P<0.001).
- High agreement was observed among automated office BP readings (ICC for systolic/diastolic BP: 0.896/0.873).
Conclusions:
- Automated office BP readings demonstrate visit-to-visit consistency.
- Automated office BP measurements are reliable regardless of the setting.
- Automated office BP readings closely approximate mean awake ambulatory BP, suggesting improved accuracy.
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