Key result
Oral instructions stating blood pressure will decrease lower systolic pressure more effectively than no instructions.
Why the study?
Do orally delivered instructions modify the intensity and direction of blood pressure and heart rate fluctuation in normotensive and hypertensive subjects?
Population
120 subjects
Comparison
Oral instructions stating that blood pressure… vs No instructions (control group)
Design
RCT, randomly divided into four groups of 15
Follow-up
5 minutes
Authors
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Oral instructions can bias office BP readings; extends expectation-effect evidence and supports ambulatory monitoring to guide decisions.
RCT (n=120)
Randomly divided
Do orally delivered instructions modify the intensity and direction of blood pressure and heart rate fluctuation in normotensive and hypertensive subjects?
Oral instructions significantly influence blood pressure measurements, highlighting the potential utility of 24-hour ambulatory monitoring to reduce this variability.
V. Cuesta (1993) conducted an RCT in Hypertension and normotension (n=120). Oral instructions regarding expected blood pressure changes vs. No instructions was evaluated on Change in systolic blood pressure. Oral instructions stating blood pressure would decrease reduced systolic pressure by 7.8 and 7.4 mmHg in normotensive and hypertensive subjects, versus 5.6 and 4.2 mmHg in controls.
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